NC Bench
Overview
About
Tests
Categories
Models
Vendors
Compare
Run: 2026-04-24-01KQ0MQGR1KM9CQ20FQ570J1R3
Run Details
Model:
GPT-5.5 (Reasoning)
Test:
Bad Writing Habits
Scenario:
Mystery: examining a crime scene
Duration:
1m 35s
Cost:
$0.130525
Provider:
OpenAI
Evaluation summary
Score
Evaluator
Details Link
100.00%
Adverbs in dialogue tags
(details)
97.89%
AI-ism adverb frequency
(details)
80.00%
AI-ism character names
(details)
100.00%
AI-ism location names
(details)
76.79%
AI-ism word frequency
(details)
100.00%
Cliché density
(details)
100.00%
Emotion telling (show vs. tell)
(details)
100.00%
Filter word density
(details)
100.00%
Gibberish response detection
(details)
100.00%
Markdown formatting overuse
(details)
100.00%
Missing dialogue indicators (quotation marks)
(details)
50.00%
Name drop frequency
(details)
100.00%
Narrator intent-glossing
(details)
100.00%
"Not X but Y" pattern overuse
(details)
100.00%
Overuse of "that" (subordinate clause padding)
(details)
100.00%
Paragraph length variance
(details)
100.00%
Passive voice overuse
(details)
100.00%
Past progressive (was/were + -ing) overuse
(details)
100.00%
Em-dash & semicolon overuse
(details)
94.00%
Purple prose (modifier overload)
(details)
100.00%
Repeated phrase echo
(details)
100.00%
Sentence length variance
(details)
58.61%
Sentence opener variety
(details)
36.83%
Adverb-first sentence starts
(details)
100.00%
Pronoun-first sentence starts
(details)
12.49%
Subject-first sentence starts
(details)
27.62%
Subordinate conjunction sentence starts
(details)
100.00%
Technical jargon density
(details)
100.00%
Useless dialogue additions
(details)
100.00%
Dialogue tag variety (said vs. fancy)
(details)
87.8080%
Overall
Model input
System
You are an expert and award-winning novel writer in the dark Mystery genre. Your readers are hooked on your stories and can't wait to read the book you have in store. <important> - MUST: Start each chapter in medias res (in the middle of action). AVOID talking about the weather, time of day, the position of the sun, or other boring stuff. - The instructions/summary are just a that, a summary. Feel free to add details, stretch sections and add interesting transitions/descriptions/fillers. - When called for it, have fast-paced action, but otherwise take things slow. This is an experience, and not for people with short attention spans. Enjoy the wine, not slurp Red Bull. - Add descriptions when transitioning places/times/etc, or when coming by new places (e.g. a corner shop, a cafe, etc.). But remember: NOT at the start or end of a chapter. - MUST: AVOID ending in internal monologue, reminiscing or waiting for the next day. A good chapter end is when we're ending right when shit hits the fan. We want to have the reader be excited for what comes next. So no reminiscing, contemplating or summarizing the day. It's popcorn time! </important>
User/Human
Take into account the following glossary of characters/locations/items/lore... when writing your response: <codex> <character id="4416" name="Detective Harlow Quinn" aliases="Quinn, Detective Quinn, Harlow" pronouns="she/her" species="Human" storyRole="Antagonist"> <eyeColor>brown</eyeColor> <hair>closely cropped salt-and-pepper</hair> <height>5'9"</height> <age>41</age> <jawline>sharp jaw</jawline> <watch>worn leather watch on her left wrist</watch> <bearing>military precision</bearing> <description>A Metropolitan Police detective with 18 years of decorated service who suspects the clique is involved in criminal activity.</description> <backstory>She lost her partner, DS Morris, during a case three years ago under unexplained circumstances that had supernatural origins she doesn't yet understand.</backstory> </character> <character id="4414" name="Eva Kowalski" aliases="Eva, Evie" pronouns="she/her" species="Human" storyRole="Best Friend"> <eyeColor>green</eyeColor> <hair>curly red</hair> <height>5'4"</height> <age>26</age> <glasses>round glasses</glasses> <satchel>worn leather satchel full of books</satchel> <freckles>freckled complexion</freckles> <nervousHabit>tucking hair behind her left ear</nervousHabit> <description>Aurora's childhood friend and an occult researcher.</description> <backstory>Moved to London two years before Aurora and works as a research assistant at the British Museum's restricted archives. She holds a master's degree in Ancient History from Oxford.</backstory> </character> <location id="856" name="The Veil Market" aliases="Veil Market, the Market, underground market" realm="Earth"> <currentLocation>abandoned Tube station beneath Camden</currentLocation> <entryRequirement>bone token</entryRequirement> <schedule>moves locations every full moon</schedule> <description>A hidden supernatural black market that sells enchanted goods, banned alchemical substances, and information.</description> </location> <item id="2004" name="Veil Compass" aliases="the Compass, shadow compass" type="Tool" origin="The Veil Market"> <casingMaterial>small brass compass</casingMaterial> <faceMarkings>face etched with protective sigils</faceMarkings> <needle>points toward the nearest supernatural rift or portal</needle> <patina>casing has a patina of verdigris</patina> <creator>crafted by a Shade artisan</creator> <description>A compass attuned to supernatural energy.</description> </item> </codex> <proseGuidelines> <styleGuide> - Write in past tense and use British English spelling and grammar - Keep a Flesch reading ease score of 60 - Respect the the Royal Order of Adjectives: The order is: opinion, size, age, shape, color, origin, material, purpose, followed by the noun itself (e.g., "a lovely little old rectangular green French silver whittling knife") - Respect the ablaut reduplication rule (e.g. tick-tock, flip-flop) - Write in active voice - Passive voice: <bad>The book was read by Sarah.</bad> - Active voice: <good>Sarah read the book.</good> - Reduce the use of passive verbs - <bad>For a moment, I was tempted to throw in the towel.</bad> - <good>For a moment, I felt tempted to throw in the towel.</good> - Avoid misplaced modifiers that can cause confusion when starting with "-ing" words: - <bad>Considering going to the store, the empty fridge reflected in Betty's eyes.</bad> - <good>Betty stared into the empty fridge. It was time to go to the store.</good> - Avoid redundant adverbs that state the obvious meaning already contained in the verb: - <bad>She whispered quietly to her mom.</bad> - <good>She whispered to her mom.</good> - Use stronger, more descriptive verbs over weak ones: - <bad>Daniel drove quickly to his mother's house.</bad> - <good>Daniel raced to his mother's house.</good> - Omit adverbs that don't add solid meaning like "extremely", "definitely", "truly", "very", "really": - <bad>The movie was extremely boring.</bad> - <good>The movie was dull.</good> - Use adverbs to replace clunky phrasing when they increase clarity: - <bad>He threw the bags into the corner in a rough manner.</bad> - <good>He threw the bags into the corner roughly.</good> - Avoid making simple thoughts needlessly complex: - <bad>After I woke up in the morning the other day, I went downstairs, turned on the stove, and made myself a very good omelet.</bad> - <good>I cooked a delicious omelet for breakfast yesterday morning.</good> - Never backload sentences by putting the main idea at the end: - <bad>I decided not to wear too many layers because it's really hot outside.</bad> - <good>It's sweltering outside today, so I dressed light.</good> - Omit nonessential details that don't contribute to the core meaning: - <bad>It doesn't matter what kind of coffee I buy, where it's from, or if it's organic or not—I need to have cream because I really don't like how the bitterness makes me feel.</bad> - <good>I add cream to my coffee because the bitter taste makes me feel unwell.</good> - Always follow the "show, don't tell" principle. For instance: - Telling: <bad>Michael was terribly afraid of the dark.</bad> - Showing: <good>Michael tensed as his mother switched off the light and left the room.</good>- Telling: <bad>I walked through the forest. It was already Fall, and I was getting cold.</bad> - Showing: <good>Dry orange leaves crunched under my feet. I pulled my coat's collar up and rubbed my hands together.</good>- Add sensory details (sight, smell, taste, sound, touch) to support the "showing" (but keep an active voice) - <bad>The room was filled with the scent of copper.</bad> - <good>Copper stung my nostrils. Blood. Recent.</good> - Use descriptive language more sporadically. While vivid descriptions are engaging, human writers often use them in bursts rather than consistently throughout a piece. When adding them, make them count! Like when we transition from one location to the next, or someone is reminiscing their past, or explaining a concept/their dream... - Avoid adverbs and clichés and overused/commonly used phrases. Aim for fresh and original descriptions. - Avoid writing all sentences in the typical subject, verb, object structure. Mix short, punchy sentences with long, descriptive ones. Drop fill words to add variety. Like so: <good>Locked. Seems like someone doesn't want his secrets exposed. I can work with that.</good> - Convey events and story through dialogue. It is important to keep a unique voice for every character and make it consistent. - Write dialogue that reveals characters' personalities, motivations, emotions, and attitudes in an interesting and compelling manner - Leave dialogue unattributed. If needed, only use "he/she said" dialogue tags and convey people's actions or face expressions through their speech. Dialogue always is standalone, never part of a paragraph. Like so: - <bad>"I don't know," Helena said nonchalantly, shrugging her shoulders</bad> - <good>"No idea" "Why not? It was your responsibility"</good> - Avoid boring and mushy dialog and descriptions, have dialogue always continue the action, never stall or include unnecessary fluff. Vary the descriptions to not repeat yourself. Avoid conversations that are just "Let's go" "yes, let's" or "Are you ready?" "Yes I'm ready". Those are not interesting. Think hard about every situtation and word of text before writing dialogue. If it doesn't serve a purpose and it's just people talking about their day, leave it. No one wants to have a normal dinner scene, something needs to happen for it to be in the story. Words are expensive to print, so make sure they count! - Put dialogue on its own paragraph to separate scene and action. - Use body language to reveal hidden feelings and implied accusations- Imply feelings and thoughts, never state them directly - NEVER use indicators of uncertainty like "trying" or "maybe" - NEVER use em-dashes, use commas for asides instead </styleGuide> <voiceGuide> Each character in the story needs to have distinct speech patterns: - Word choice preferences - Sentence length tendencies - Cultural/educational influences - Verbal tics and catchphrases Learn how each person talks and continue in their style, and use their Codex entries as reference. <examples> - <bad>"We need to go now." "Yes, we should leave." "I agree."</bad> <good>"Time's up." "Indeed, our departure is rather overdue." "Whatever, let's bounce."</good> - Power Dynamic Example: <bad> "We need to discuss the contract." "Yes, let's talk about it." "I have concerns." </bad> <good> "A word about the contract." "Of course, Mr. Blackwood. Whatever you need." "The terms seem..." A manicured nail tapped the desk. "Inadequate." "I can explain every-" "Can you?" </good> </examples> </voiceGuide> <dialogueFlow> When writing dialogue, consider that it usually has a goal in mind, which gives it a certain flow. Make dialogue sections also quite snappy in the back and forth, and don't spread the lines out as much. It's good to have details before, after, or as a chunk in-between, but we don't want to have a trail of "dialogue breadcrumbs" spread throughout a conversation. <examples> - Pattern 1 - Question/Deflection/Revelation: <good> "Where were you last night?" "Work. The usual." "Lipstick's an interesting shade for spreadsheets." </good> - Pattern 2 - Statement/Contradiction/Escalation: <good> "Your brother's clean." "Tommy doesn't touch drugs." "I'm holding his tox screen." </good> - Pattern 3 - Observation/Denial/Truth: <good> "That's a new watch." "Birthday gift." "We both know what birthdays mean in this business." </good> - Example - A Simple Coffee Order: <bad> "I'll have a coffee." "What size?" "Large, please." </bad> <good> "Black coffee.""Size?""Large. Been a long night." "That bodega shooting?" "You watch too much news." "My brother owns that store." </good> This short exchange: - Advances plot (reveals connection to crime) - Shows character (cop working late) - Creates tension (unexpected connection) - Sets up future conflict (personal stake) - Example - Dinner Scene: <bad> "Pass the salt." "Here you go." "Thanks." </bad> <good> "Salt?" "Perfect as is. Mother's recipe." "Mother always did prefer... bland things." "Unlike your first wife?" </good> - Example - Office Small Talk: <bad> "Nice weather today." "Yes, very nice." "Good for golf." </bad> <good> "Perfect golf weather." "Shame about your membership." "Temporary suspension. Board meets next week." "I know. I called the vote." </good> </examples> </dialogueFlow> <subtextGuide> - Layer dialogue with hidden meaning: <bad>"I hate you!" she yelled angrily.</bad> <good>"I made your favorite dinner." The burnt pot sat accusingly on the stove.</good> - Create tension through indirect communication: <bad>"Are you cheating on me?"</bad> <good>"Late meeting again?" The lipstick stain on his collar caught the light.</good> <examples> - Example 1 - Unspoken Betrayal: <bad> "Did you tell them about our plans?" "No, I would never betray you." "I don't believe you." </bad> <good> "Funny. Johnson mentioned our expansion plans today." "The market's full of rumors." "Mentioned the exact numbers, actually." The pen in his hand snapped. </good> - Example 2 - Failed Marriage: <bad> "You're never home anymore." "I have to work late." "I miss you." </bad> <good> "Your dinner's in the microwave. Again." "Meetings ran long." "They always do." She folded the same shirt for the third time. </good> - Example 3 - Power Struggle: <bad> "You can't fire me." "I'm the boss." "I'll fight this." </bad> <good> "That's my father's nameplate you're sitting behind." "Was." "The board meeting's on Thursday." </good> </examples> </subtextGuide> <sceneDetail> While writing dialogue makes things more fun, sometimes we need to add detail to not have it be a full on theatre piece. <examples> - Example A (Power Dynamic Scene) <good> "Where's my money?" The ledger snapped shut. "I need more time." "Interesting." He pulled out a familiar gold pocket watch. My mother's. "Time is exactly what you bargained with last month." "That was different-" "Was it?" The watch dangled between us. "Four generations of O'Reillys have wound this every night. Your mother. Your grandmother. Your great-grandmother.Shall we see who winds it next?" </good> - Example B (Action Chase) It's much better to be in the head of the character experiencing it, showing a bit of their though-process, mannerisms and personality: <good> Three rules for surviving a goblin chase in Covent Garden: Don't run straight. Don't look back. Don't let them herd you underground. I broke the first rule at Drury Lane. Rookie mistake. The fruit cart I dodged sailed into the wall behind me. Glass shattered. Someone screamed about insurance. *Tourist season's getting rough*, the scream seemed to say. Londoners adapt fast. "Oi! Market's closed!" The goblin's accent was pure East End. They're evolving. Learning. I spotted the Warren Street tube station sign ahead. *Shit.* There went rule three. </good> - Example C (Crime Scene Investigation) <good> "Greek." Davies snapped photos of the symbols. "No, wait. Reverse Greek." "Someone's been watching too many horror films." I picked up a receipt from the floor. Occult supply shop in Camden. Paid by credit card. *Amateur hour*. "Could be dangerous though," Davies said. "Remember Bristol?" "Bristol was Sanskrit. And actual cultists." I pointed to the nearest symbol. "This genius wrote 'darkness' backwards but used a Sigma instead of an S. It's summoning Instagram followers at best." "Speaking of followers..." Davies pointed to heavy foot traffic in the dust. Multiple sets. All new trainers. *Ah.* "Anyone check local uni paranormal societies?" </good> - Example D (Dialogue-heavy) <good> "Found your card in her wallet." The detective slid it across the table. Worn edges. Folded corner. Three years old at least. "Standard practice. I work missing persons." "Funny thing about missing persons.Eventually they stop being missing. Turn up in the Thames. Under motorways. In pieces." "I don't-" "You found four last year. All breathing." She opened a file. "This would've been your first dead one. If we hadn't found her first." The card felt heavier somehow. </good> </examples> </sceneDetail> <sceneOpenings> KEY RULE: Never open with more than one paragraph of description, no matter how beautiful. Description should be earned through action and dialogue. Instead of opening with setting description, open with: - A character doing something specific - A line of dialogue that raises questions - An unexpected observation - A moment of tension or conflict - Start with a hook that's 1-2 sentences maximum - Follow with a smaller paragraph that provides immediate context - Vary paragraph size from the start to create visual interest </sceneOpenings> </proseGuidelines> Write a chapter based on the following instructions: <instructions> Write a fully fleshed out scene of at least 1000 words in the mystery genre. A detective arrives at a crime scene in an unusual location. Something is wrong — the evidence doesn't add up. A colleague is present, offering a different interpretation. Through careful observation and deduction, the detective begins to see what others have missed. Use the codex entries above as your world reference for characters and setting. Only include the prose of the scene without any markdown or commentary. </instructions>
Model response
Messages
Meta
AI
Detective Harlow Quinn caught the
constable’s wrist before his boot crushed the line of milk teeth set into the platform edge. “Step back.”
The constable froze, one foot
hovering above the grinning little border.
His face had gone the
colour of old paper. “I thought they were beads.” “People always do.” Quinn released him and crouched, keeping her coat clear of the chalk dust.
The teeth ran in a
clean curve around the dead man, each one pressed root-first into a seam between cracked tiles. Incisors, canines, molars.
Human, unless someone had found
a dog with a dentist. Beyond the teeth, the abandoned Tube station had shed its old life and grown a stranger one in the dark.
Stalls crowded the platform, their
striped awnings patched with
velvet
, tarpaulin, and scraps of embroidered funeral cloth.
Brass cages hung empty from
hooks.
Glass jars stood in rows
behind a spice counter, each labelled in a careful hand,
grave
salt, moth ash, saint’s marrow.
A butcher’s block sweated black
resin.
Someone had painted the old
roundel sign above the tracks, so Camden Town now read Candle Down in flaking gold letters.
Crime scene tape looked stupid
down here. Too bright. Too official.
It sagged between wrought-iron posts
as if embarrassed by itself.
DS Arun Patel stood beside
the body with his hands in the pockets of his charcoal coat. His tie sat crooked.
His eyes had that hungry
look he got when he wanted an easy theory before breakfast. “Welcome to retail hell.” Quinn looked at him. “Sorry.” “No, you’re not.” “No.”
Patel
glanced at the stalls. “But I’m adjusting. Black market under Camden. Our victim picked a theatrical place to die.” “Our victim didn’t pick anything.”
Patel
’s mouth twitched. “You’ve been here thirty seconds.” “Forty-two.”
She checked the worn leather
watch
on her left wrist out of habit, then rose. The old platform tiles clicked under her heels.
She moved around the tooth
circle without touching it, shoulders squared, hands still. Military precision never left much room for panic, which helped when London decided to spit bones out of its foundations. The dead man lay on his back inside the ring, arms arranged at his sides, palms up. Mid-thirties. Brown suit. Cheap shoes polished to a mean shine.
His throat bore a single
cut, clean and deep, but the tiles beneath his neck held only a thin comma of blood. His eyes remained open, clouded, fixed on the old arched ceiling where soot still clung from trains that had stopped running decades ago. A paper tag dangled from his lapel on red string. Quinn leaned closer. Lot 17. Returned goods.
Patel
watched her read it. “Looks like a punishment killing. Dealers fall out, someone makes an example. Occult nonsense on top for flavour.” “Occult nonsense bought teeth in bulk and laid them root-first.” “It’s Camden. I once nicked a man selling cursed vape liquid.” “Did it work?” “Gave three lads diarrhoea and one a religious experience.” “Then not cursed. Just strawberry.” A photographer snorted behind his camera. Quinn turned her head a fraction. The snort died.
Patel
lifted a gloved hand towards a brass object near the corpse’s left hip. “Harlow, you’ll like this bit.” “I doubt that.”
He pointed, careful not to
cross the tooth line. A small brass compass sat on the tile beside the dead man. Verdigris crept along the casing in green bites. Protective sigils ringed its face,
etched
with fine, obsessive skill. The needle did not point north.
It strained hard towards the
tunnel mouth, quivering as though something down there breathed against it. “Our murder weapon’s absent, but our victim brought treasure.”
Patel
crouched opposite her. “Some kind of novelty compass. Face is scratched with symbols. Uniform thought Masonic. I thought online rubbish. Then your museum friend turned up and said it was old.” Quinn’s gaze snapped to him. “My museum friend?”
Patel
tipped his chin towards a stall covered in blue cloth. “Red hair. Round glasses. Looks like a librarian who knows where the bodies are footnoted.” Eva Kowalski stood beyond the tape with a worn leather satchel clutched to her ribs.
Her curly red hair had
escaped its pins and spilled around her freckled face.
She tucked a strand behind
her left ear, then did it again though it had already stayed put.
Her green eyes followed the
compass, not the corpse. A uniformed officer hovered near her with the bored irritation of a man guarding someone cleverer than him. Quinn crossed to the tape. “Miss Kowalski.” Eva swallowed. “Detective Quinn.” “You’re a long way from the British Museum.” “The Museum has basements too.” “Not like this.” “No. The Museum labels its nightmares.”
Patel
joined them, eyebrows raised. “You two know each other?” “Professionally.” Eva’s fingers tightened on the satchel strap. “I helped identify some coins for a fraud case last year.” Quinn let the lie sit between them. Fraud case. Coins. Nice little words for a file sealed by three senior officers and a coroner who resigned before lunch. “How did you get past the cordon?” “I was called.” “By whom?” Eva looked past Quinn to the platform shadows. “That is the question I hoped you would ask.”
Patel
folded his arms. “She had this on her.” The constable passed him a small bone token sealed in an evidence bag. Someone had carved a keyhole through the centre. Its surface shone from handling. Quinn took the bag and held it up. The bone token
seemed harmless beneath the station lights, the kind of trinket sold to tourists beside incense and fake Roman coins
.
Her skin prickled under the
glove. “You carry entry tokens to underground crime scenes now?” “I carry things that keep me alive in London.” “Most people manage with an Oyster card.” “Most people don’t read the catalogues I read.”
Patel
exhaled through his nose. “This place has an entry system. She says the market moves every full moon.” Quinn looked back at the stalls. The abandoned station did not look temporary. It looked rooted. Yet the clutter told a different story. Hinges gleamed fresh against rotten wood. Shelves had dust behind them but none beneath them. Heavy counters sat on felt pads for quick movement. No one had built a market here. They had unpacked one. “How many exits?” “Two tunnels, one service stair, one maintenance lift welded shut in 1998.”
Patel
nodded towards the far end. “Uniforms covered the stair. Dogs won’t go down either tunnel.” “Won’t?” “One bit Cooper.” The constable with the pale face lifted his bandaged hand in proof. Quinn ducked under the tape near a cabinet of cracked
porcelain
masks. The air changed as soon as she moved deeper into the market.
It tasted metallic, like a
coin held under the tongue. A row of tiny bells
trembled
on a stall though no one touched them.
Somewhere below the platform, water
dripped in a steady tick-tock that did not match any pipe she could see.
She stopped beside the corpse
again. “Name?” “Gareth Vale. Forty-one. No fixed address, but plenty of aliases. Petty theft, handling stolen goods, two arrests for burglary. No convictions worth framing. His prints flagged fast.” “Connection to this place?”
Patel
smiled without
warmth
. “If I had to guess, customer service complaint.” Quinn ignored that and studied Vale’s hands. No defensive wounds. No broken nails. A faint grey powder marked the pads of his thumb and first two fingers on the right hand. Ink stained the side of his left hand, but not the fingers. “Left-handed.”
Patel
checked his notes. “Known lefty. Arrest forms mention it. Why?” “The compass sits by his left hip, on the wrong side for a man reaching as he fell.” “Someone placed it.” “Yes.” “That supports staging.” “It supports clumsy staging.” Quinn circled him again. The tooth border had one gap near his right shoulder, wide enough for a hand. The chalk marks beneath the teeth had smudged there. Not a scuff. A drag.
She crouched until her sharp
jaw nearly
aligned
with the platform tiles. The blood at the throat cut glistened, too neat and too sparse. The collar of Vale’s shirt had soaked more heavily at the back than at the front. “He bled somewhere else.”
Patel
’s expression sobered. “Pathologist said the throat wound killed him.” “The pathologist saw him here?” “On video call. Dr Fairchild refused to attend until we cleared the ‘biohazard curios’ from the platform.” “Fairchild also faints at maggots.” “Only once.” “Twice. Birmingham Street.”
Patel
looked away, conceding the point. Quinn leaned over the corpse without crossing the teeth. Vale’s lips had cracked at the corners. His tongue showed a dark smear. Not blood. Something black and granular. “Open his mouth.” The photographer lowered his camera. “Ma’am?” “Open his mouth.”
Patel
nodded to the forensic tech. She stepped over the tooth line after Quinn marked the clean path with two evidence cones. The tech used forceps and a penlight. Vale’s jaw opened with a dry click. A bead rolled from beneath his tongue and struck the tile. Not a bead. A seed. It was black, wrinkled, and oval, with a thin silver line running around its middle like a closed eye. Eva made a small sound behind the tape. Quinn did not turn. “You know it.” “No.”
Patel
glanced at her. “Convincing.” Eva tucked her hair again. “It resembles something from a seventeenth-century pamphlet. Apothecary trials. Not a reliable source.” “Name.” “Widowseed.” The bells on the nearby stall shivered harder.
Patel
gave the corpse a fresh look. “Poison?” “Not in the pamphlet.” Eva’s voice thinned. “A marker. Supposedly placed in the mouth of someone who crossed between places and came back wrong.” Quinn looked at the dead man’s open mouth, at the black seed
gleaming
on the tile. “Wrong how?” “The pamphlet uses the word hollowed.”
Patel
laughed once. The sound landed badly and stayed there. “Fine. We’ve got a magic seed, a fake compass, and a dead burglar in a secret market. I still like dealers.” “Dealers don’t abandon stock.” Quinn pointed towards the stalls. “Look around. Half the goods remain. Jars, charms, books, whatever they sell in that cage with the little gloves. A raid would scatter people, but greed makes them grab what matters.”
Patel
turned
slowly
. His gaze moved over the counters, the open tills, the hanging cages. “Panic, then.” “Panic takes cash.” Quinn crossed to a stall with a cracked
marble
top. A till drawer hung open, stuffed with old notes, euros, and coins she did not recognise. Beside it sat a chipped saucer full of bone tokens. The vendor had left both. She picked up nothing. Her eyes worked instead. A cup of tea sat beside a ledger, skin formed across the top. A fountain pen lay uncapped, nib still wet enough to stain the page beneath. Someone had written seven words in a cramped hand. Vale returned through north cut. Not alone. The final letter trailed down the page.
Patel
read over her shoulder. “North cut. Tunnel?” Quinn looked towards the compass needle. It pointed at the northbound tunnel, where darkness pooled beyond the old safety line. “Not a customer dispute.” “No. Your burglar came through that tunnel and frightened an entire black market into leaving money behind.” “Then someone killed him.” “Someone cut his throat after he had already stopped being the main problem.”
Patel
’s face tightened. “There’s another body?” “Not a body.” Eva spoke from behind the tape. “Detective Quinn.” Quinn did turn then. Eva stared at the compass. Its needle no longer
quivered
. It spun, slow at first, then faster, ticking against the glass with a frantic tinny rhythm. Tick-tick-tick. The platform lights
flickered
. Not out. Down.
As if something had pressed
a thumb against each bulb.
Patel
reached for his radio. “Control, this is DS
Patel
at Camden disused, requesting additional units to northbound access, possible suspect in tunnel.” Static barked back, thick and wet. A voice came through beneath it. “Lot seventeen.” Everyone went still. The voice did not belong to Control. It had too many edges, like several people speaking with one ruined mouth.
Patel
stared at the radio. “Say again.” “Returned goods.” The corpse sat up. The forensic tech screamed and fell backwards, scattering evidence cones across the tooth ring. Vale’s eyes had changed. The cloudy film had gone. Blackness pressed behind the lids, deep and glossy, and the slit in his throat opened as his head lolled towards Quinn. No blood came out. The brass compass cracked across its glass face. Eva lunged under the tape. “Don’t let him cross the teeth.” Vale’s right hand shot through the gap in the ring and closed around the forensic tech’s ankle. His fingers sank into her overshoe with a sound like wet paper tearing.
Patel
grabbed her under the arms and hauled. Quinn drew her baton and smashed Vale’s wrist. Bone broke. Vale did not let go. The bells along the stall
began to
ring by themselves, wild and bright. Jars burst one after another behind the spice counter. Grey powder billowed across the platform, carrying the bitter stink of burnt hair. “Move back.” The order cut through the panic. Uniforms obeyed because Quinn’s voice left no space for debate. Eva dropped to her knees beside the tooth circle, satchel open, books spilling onto the tiles. “I need salt, iron, or a saint with flexible morals.” “This is a crime scene.” “This is a door with a corpse for a hinge.” Vale’s jaw stretched. The black seed beneath his tongue split open, and something pale pushed through it, a thin root questing in the air.
Patel
kicked Vale’s elbow. “Harlow.” “I see it.” “No, you don’t.” He pointed at the northbound tunnel. The darkness there had folded into a vertical seam. It widened between the rails, silver at the edges, black in the centre. The air around it rippled like heated glass. From within came the clatter of distant stalls, the murmur of bargaining voices, and beneath them, a man’s laugh Quinn had not heard in three years. DS Morris laughed again from inside the tunnel. “Harlow,” the dead man called, “you’re late.” Then the seam tore open, and something wearing Morris’s face stepped onto the track.
created_at
"2026-04-24T21:01:01.844Z"
4/24/2026, 9:01:01 PM
model
"openai/gpt-5.5-20260423"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
13226
moderation_latency
(null)
generation_time
92928
tokens_prompt
4671
tokens_completion
4004
native_tokens_prompt
4157
native_tokens_completion
3658
native_tokens_completion_images
0
native_tokens_reasoning
516
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
num_fetches
(null)
web_search_engine
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"completed"
usage
0.130525
router
(null)
provider_responses
0
endpoint_id
"58e5b336-423e-430b-a2ab-8bc353f0c51b"
id
"resp_06cc944485b47b860169ebda0eeb8c81908b73659d3874095d"
is_byok
false
latency
555
model_permaslug
"openai/gpt-5.5-20260423"
provider_name
"OpenAI"
status
200
user_agent
"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer
(null)
request_id
"req-1777064462-MVLxSUPYMJ14EDmwTH3Z"
session_id
(null)
api_type
"completions"
id
"gen-1777064462-bfcGG0qIa4Z9vfZsKsyK"
upstream_id
"resp_06cc944485b47b860169ebda0eeb8c81908b73659d3874095d"
total_cost
0.130525
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
response_cache_source_id
(null)
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
5
adverbTagCount
0
adverbTags
(empty)
dialogueSentences
105
tagDensity
0.048
leniency
0.095
rawRatio
0
effectiveRatio
0
97.89%
AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount
2370
totalAiIsmAdverbs
1
found
0
adverb
"slowly"
count
1
highlights
0
"slowly"
80.00%
AI-ism character names
Target: 0 AI-default names (17 tracked, −20% each)
codexExemptions
(empty)
found
0
"Patel"
100.00%
AI-ism location names
Target: 0 AI-default location names (33 tracked, −20% each)
codexExemptions
(empty)
found
(empty)
76.79%
AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount
2370
totalAiIsms
11
found
0
word
"velvet"
count
1
1
word
"grave"
count
1
2
word
"etched"
count
1
3
word
"porcelain"
count
1
4
word
"trembled"
count
1
5
word
"warmth"
count
1
6
word
"aligned"
count
1
7
word
"gleaming"
count
1
8
word
"marble"
count
1
9
word
"quivered"
count
1
10
word
"flickered"
count
1
highlights
0
"velvet"
1
"grave"
2
"etched"
3
"porcelain"
4
"trembled"
5
"warmth"
6
"aligned"
7
"gleaming"
8
"marble"
9
"quivered"
10
"flickered"
100.00%
Cliché density
Target: ≤1 cliche(s) per 800-word window
totalCliches
0
maxInWindow
0
found
(empty)
highlights
(empty)
100.00%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
198
matches
(empty)
100.00%
Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount
1
hedgeCount
1
narrationSentences
198
filterMatches
0
"watch"
hedgeMatches
0
"began to"
100.00%
Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences
298
gibberishSentences
0
adjustedGibberishSentences
0
longSentenceCount
0
runOnParagraphCount
0
giantParagraphCount
0
wordSaladCount
0
repetitionLoopCount
0
controlTokenCount
0
repeatedSegmentCount
0
maxSentenceWordsSeen
31
ratio
0
matches
(empty)
100.00%
Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans
0
markdownWords
0
totalWords
2370
ratio
0
matches
(empty)
100.00%
Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions
12
unquotedAttributions
0
matches
(empty)
50.00%
Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions
86
wordCount
1707
uniqueNames
15
maxNameDensity
1.52
worstName
"Quinn"
maxWindowNameDensity
3.5
worstWindowName
"Patel"
discoveredNames
Harlow
1
Quinn
26
Tube
1
Camden
1
Town
1
Candle
1
Arun
1
Patel
26
London
1
Kowalski
1
Roman
1
Vale
11
Control
1
Morris
2
Eva
11
persons
0
"Harlow"
1
"Quinn"
2
"Arun"
3
"Patel"
4
"Kowalski"
5
"Roman"
6
"Vale"
7
"Morris"
8
"Eva"
places
0
"Camden"
1
"Town"
2
"London"
3
"Control"
globalScore
0.738
windowScore
0.5
100.00%
Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences
125
glossingSentenceCount
1
matches
0
"seemed harmless beneath the station lights, the kind of trinket sold to tourists beside incense and fake Roman coins"
100.00%
"Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches
0
per1kWords
0
wordCount
2370
matches
(empty)
100.00%
Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount
0
totalSentences
298
matches
(empty)
100.00%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
179
mean
13.24
std
15.42
cv
1.165
sampleLengths
0
21
1
2
2
20
3
5
4
3
5
47
6
91
7
21
8
37
9
4
10
4
11
1
12
3
13
21
14
5
15
3
16
5
17
1
18
56
19
72
20
10
21
3
22
4
23
5
24
18
25
10
26
11
27
3
28
9
29
5
30
15
31
14
32
5
33
3
34
61
35
41
36
5
37
3
38
26
39
56
40
18
41
5
42
2
43
4
44
8
45
5
46
3
47
6
48
5
49
5
100.00%
Passive voice overuse
Target: ≤2% passive sentences
passiveCount
0
totalSentences
198
matches
(empty)
100.00%
Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount
0
totalVerbs
284
matches
(empty)
100.00%
Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount
0
semicolonCount
0
flaggedSentences
0
totalSentences
298
ratio
0
matches
(empty)
94.00%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
1713
adjectiveStacks
1
stackExamples
0
"fresh against rotten wood."
adverbCount
37
adverbRatio
0.021599532983070636
lyAdverbCount
6
lyAdverbRatio
0.0035026269702276708
100.00%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
298
echoCount
0
echoWords
(empty)
100.00%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
298
mean
7.95
std
5.89
cv
0.741
sampleLengths
0
21
1
2
2
11
3
9
4
5
5
3
6
13
7
21
8
3
9
10
10
20
11
17
12
6
13
21
14
6
15
21
16
7
17
2
18
2
19
10
20
17
21
4
22
16
23
4
24
4
25
1
26
3
27
6
28
15
29
5
30
3
31
5
32
1
33
15
34
8
35
13
36
20
37
17
38
1
39
2
40
7
41
22
42
23
43
10
44
3
45
2
46
2
47
5
48
18
49
10
58.61%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
12
diversityRatio
0.37583892617449666
totalSentences
298
uniqueOpeners
112
36.83%
Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount
2
totalSentences
181
matches
0
"Somewhere below the platform, water"
1
"Then the seam tore open,"
ratio
0.011
100.00%
Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount
33
totalSentences
181
matches
0
"His face had gone the"
1
"It sagged between wrought-iron posts"
2
"His tie sat crooked."
3
"His eyes had that hungry"
4
"She checked the worn leather"
5
"She moved around the tooth"
6
"His throat bore a single"
7
"His eyes remained open, clouded,"
8
"He pointed, careful not to"
9
"It strained hard towards the"
10
"Her curly red hair had"
11
"She tucked a strand behind"
12
"Her green eyes followed the"
13
"Its surface shone from handling."
14
"Her skin prickled under the"
15
"It looked rooted."
16
"They had unpacked one."
17
"It tasted metallic, like a"
18
"She stopped beside the corpse"
19
"She crouched until her sharp"
ratio
0.182
12.49%
Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount
162
totalSentences
181
matches
0
"Detective Harlow Quinn caught the"
1
"The constable froze, one foot"
2
"His face had gone the"
3
"Quinn released him and crouched,"
4
"The teeth ran in a"
5
"Incisors, canines, molars."
6
"Human, unless someone had found"
7
"Stalls crowded the platform, their"
8
"Brass cages hung empty from"
9
"Glass jars stood in rows"
10
"A butcher’s block sweated black"
11
"Someone had painted the old"
12
"Crime scene tape looked stupid"
13
"It sagged between wrought-iron posts"
14
"DS Arun Patel stood beside"
15
"His tie sat crooked."
16
"His eyes had that hungry"
17
"Quinn looked at him."
18
"Patel glanced at the stalls"
19
"Patel’s mouth twitched."
ratio
0.895
27.62%
Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount
1
totalSentences
181
matches
0
"As if something had pressed"
ratio
0.006
100.00%
Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences
69
technicalSentenceCount
3
matches
0
"It sagged between wrought-iron posts as if embarrassed by itself."
1
"It strained hard towards the tunnel mouth, quivering as though something down there breathed against it."
2
"Somewhere below the platform, water dripped in a steady tick-tock that did not match any pipe she could see."
100.00%
Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags
5
uselessAdditionCount
0
matches
(empty)
100.00%
Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags
1
fancyCount
0
fancyTags
(empty)
dialogueSentences
105
tagDensity
0.01
leniency
0.019
rawRatio
0
effectiveRatio
0
87.8080%