Run: 2026-03-12-01KKHYWZN718QMCEA2HBZE7YDN

Run Details

Duration:
54.7s
Cost:
$0.045613
Provider:
xAI

Model input

System
You are an expert novelist with a gift for vivid, immersive prose. You write in tight third-person limited point of view with a strong narrative voice. Your prose is clean, precise, and engaging — you favor strong verbs, concrete details, and natural-sounding dialogue. You will be given a story bible (codex) containing canonical details about characters, locations, items, and lore. Use these details to ground your writing in the established world. Stay consistent with the codex. Write only the prose of the scene. Do not include titles, chapter headings, markdown formatting, or any commentary before or after the scene.
User/Human
<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> 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.

Model response

AI
Detective Harlow Quinn descended the rusted metal stairs into the abandoned Tube station, the beam of her torch cutting through air thick with damp and the faint bite of ozone. Her boots rang sharp against the concrete, each step measured with the military precision that had carried her through eighteen years on the force. The call had come in at half past one, an anonymous tip about a body in a place that officially did not exist beneath the streets of Camden. At forty-one, with closely cropped salt-and-pepper hair and a sharp jaw that rarely softened, she had learned to trust the prickle that crawled across her scalp when ordinary facts refused to line up. The platform opened before her like a buried cathedral, its vaulted ceiling lost in shadow. Portable lights on stands threw harsh white pools across the scene, revealing what should not have been there: a sprawl of makeshift stalls, their canvas torn, their contents scattered like the aftermath of a storm. Vials of luminous liquid glinted among shards of broken glass. Bundles of dried herbs released a cloying sweetness that clung to the back of her throat. Strange metal talismans etched with symbols she could not name lay beside coins that looked minted from no currency she recognised. This was no squatters' camp or drug den. It felt like a market that had been frozen mid-breath. Sergeant Ellis waited near the body, notebook in hand, his face drawn in the unforgiving light. "Detective Quinn," he said, offering a curt nod. "Single victim, male, roughly fifty. Multiple stab wounds to the chest and throat. No ID, but plenty of product. Looks like a deal that ended with steel instead of cash." Quinn crouched beside the corpse. The man had fallen backward across a low wooden crate, coat splayed open. The wounds were ugly, yet the flesh at their edges had a curious blackened sheen, as though the blade had been heated in a forge or treated with acid. Blood had leaked, but not enough for the damage she saw. That was the first discrepancy. She checked her worn leather watch. Three seventeen. The market had clearly been trading when violence struck; the stalls suggested dozens of people, yet only one set of fresh prints led away from the body toward a bricked-up archway at the far end of the platform. Ellis shifted his weight. "My take? Turf dispute. These underground markets pop up in forgotten tunnels, sell whatever the law won't touch. Look at the gear—glows, stinks, probably some new synthetic. The clique you've been watching might have a finger in it, but this feels ordinary enough. Robbery gone messy, or a seller who shorted the wrong buyer." Quinn said nothing. She had heard Ellis's brand of pragmatism before, and sometimes it served them well. Tonight it felt like a shutter pulled down against the truth. She reached for an object half-hidden beneath the victim's curled fingers. A small brass compass, its casing mottled with verdigris, rested cool against her gloved palm. Protective sigils marched around its face in precise, looping lines. The needle did not point north. It trembled, then locked toward the bricked archway with an unnatural steadiness, as though the wall itself exerted a magnetic pull. She turned the instrument slowly. The patina spoke of age and careful hands. Shade artisan, her mind supplied without knowing why. The words arrived like a memory that was not hers. She slipped the compass into an evidence bag but kept it visible, studying how the needle continued to strain even through the plastic. A soft scuff of boots made her look up. Eva Kowalski stood a few metres away, curly red hair escaping its hasty knot, round glasses slightly askew on her freckled face. The young woman clutched a worn leather satchel to her chest, its flap open to reveal the spines of old books. She tucked a stray curl behind her left ear, the nervous gesture betraying her before she spoke. "Detective Quinn," Eva said, voice low but steady. "That satchel is mine. I left it when I found him." Ellis gave a short laugh. "Convenient. Occult researcher turns up at an illegal market right after closing time. You here to browse or to buy, Miss Kowalski?" Quinn lifted a hand, silencing him. She rose, keeping the compass in view. "Explain your presence, Miss Kowalski. And while you're at it, explain why a simple stabbing left a man with burns around the wounds and a compass that refuses to behave like a compass." Eva's green eyes flicked to the body, then to the scattered goods. She tucked the curl again. "This is the Veil Market. It moves every full moon. You need a bone token to enter—something that proves you belong to the hidden world. The victim had one around his neck. I came here for research, not commerce. There's a stall that trades in archival material on rifts. When I arrived, most of the traders had already fled. He was already dead." Ellis rolled his eyes. "Rifts. Bone tokens. With respect, Detective, she's spinning fairy tales to cover her own involvement. The wounds are from a knife, the market's full of banned substances, and the girl has history with the very crowd you've been investigating. It's a straightforward homicide. Pack it up and we'll have the case closed by lunch." Quinn ignored the suggestion. She walked the perimeter of the stall, noting details others had overlooked. Footprints in the thin layer of tunnel dust showed at least twelve people had stood here recently, yet only one trail of panic led to the service stairs. The most valuable-looking items—stoppered bottles containing liquid that still shimmered with inner light—remained untouched. A thief would have taken them. A rival dealer would have smashed them. Instead they sat like offerings. The wounds on the victim's throat formed a pattern: three parallel lines intersected by a circle. The same design appeared on the compass face, etched smaller but identical. She returned to Eva. "The evidence doesn't add up, Sergeant. A competent killer would have taken the compass. It clearly has value. Instead it was left in the dead man's hand, pointing like a signpost." She held the bagged instrument up again. The needle still strained toward the archway. "And those burns aren't from any knife I've seen in eighteen years. They're too clean. Too precise." Eva hesitated, then spoke softly. "The compass was made to find active portals. Supernatural rifts. If it's pointing there, something came through. Or someone who knows how to use them." Quinn felt the old familiar twist in her chest, the one that had never fully healed since DS Morris vanished three years earlier. That night had begun with ordinary surveillance and ended with a room full of similar sigils and the smell of lightning. Official reports called it gang execution. She had never believed them. Now the same metallic scent threaded the stale air of the tunnel. She crossed to the bricked archway. Up close the mortar looked newer than the surrounding Victorian brickwork. She ran her fingers across the surface and felt a faint vibration, like a plucked wire. The compass needle in her pocket jerked hard enough to tap the plastic. Behind her, Ellis muttered about wasting time on ghost stories, but his voice sounded distant, unimportant. "The market exists to trade what normal channels won't touch," she said aloud, piecing the scene together as she spoke. "Enchanted goods. Information. Banned substances that aren't chemical but alchemical. Someone came here specifically for this man. Not to rob him. To silence him. The attacker left the valuable stock because the merchandise wasn't the point. The message was." Eva stepped closer, satchel swinging at her side. "The clique you suspect—they trade here, yes. But they're not murderers. This feels like a warning aimed at them. The burns suggest a weapon that draws on rift energy. Ordinary steel doesn't do that." Quinn turned, brown eyes locking onto the younger woman's. Eva's freckled cheeks had paled, and her fingers kept drifting toward that nervous tuck behind her ear. The gesture confirmed what Quinn already sensed: the woman knew far more than she was willing to say in front of Ellis. Yet her explanation fit the physical evidence better than any mundane theory. "The token around his neck," Quinn said. "Bone. Carved. You called it an entry requirement. How did you know to bring one?" "I didn't," Eva admitted. "My contact provided it. He never arrived." Ellis threw up his hands. "Contact. Tokens. I'm writing this up as a drug-related homicide. The rest is conjecture." Quinn straightened, decision crystallising. She had spent three years chasing shadows that refused to stay ordinary. Tonight the shadows had form. The compass, the sigils, the insufficient blood, the untouched valuables, the impossible needle—all of it pointed away from the simple narrative Ellis wanted. Something had stepped out of the bricked archway, or through it, and left death behind. And Eva Kowalski, with her satchel of forbidden knowledge and her connections to the clique, stood at the centre of the pattern. "Bag everything," she told the waiting forensic team. "Including the compass. I want spectral analysis on those wounds. And Miss Kowalski will accompany us to the station. Voluntary, for now." She met Eva's gaze again. "Unless you'd prefer I start asking questions about your friends here in the tunnel." Eva swallowed but lifted her chin. The nervous habit had stopped; in its place was something like reluctant respect. Quinn felt the weight of the compass in her pocket, tugging gently toward the unseen. For the first time since Morris, the trail felt solid beneath her feet. The evidence had not lied. It had simply been speaking a language she had not yet learned to hear. Now, in the cold light of the abandoned market, she was beginning to understand the grammar of what others had missed. The ordinary explanations would no longer serve. Something far older and stranger had stepped into her city, and it had left its calling card in blood and brass. She checked her watch one final time. The second hand swept forward with mechanical certainty. Whatever had happened here tonight was only the opening movement. The full score waited in the dark, and Detective Harlow Quinn intended to read every note.
created_at"2026-03-12T21:23:03.98Z" 3/12/2026, 9:23:03 PM
model"x-ai/grok-4.20-beta-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency41632
moderation_latency(null)
generation_time54536
tokens_prompt923
tokens_completion2622
native_tokens_prompt934
native_tokens_completion7310
native_tokens_completion_images0
native_tokens_reasoning5203
native_tokens_cached64
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.0456128
router(null)
provider_responses
0
endpoint_id"33f49f24-a0de-4dcf-872d-ca514e83fbae"
id"ab315a44-7ef2-1a65-fbe3-873a70bf95cc"
is_byokfalse
latency560
model_permaslug"x-ai/grok-4.20-beta-20260309"
provider_name"xAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer(null)
api_type"completions"
id"gen-1773350583-FlN8AZsyqY91wNHY1JSs"
upstream_id"ab315a44-7ef2-1a65-fbe3-873a70bf95cc"
total_cost0.0456128
cache_discount0.0001152
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags8
adverbTagCount1
adverbTags
0"she said aloud [aloud]"
dialogueSentences23
tagDensity0.348
leniency0.696
rawRatio0.125
effectiveRatio0.087
85.54% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1729
totalAiIsmAdverbs5
found
0
adverb"slowly"
count1
1
adverb"slightly"
count1
2
adverb"very"
count1
3
adverb"softly"
count1
4
adverb"gently"
count1
highlights
0"slowly"
1"slightly"
2"very"
3"softly"
4"gently"
100.00% AI-ism character names
Target: 0 AI-default names (17 tracked, −20% each)
codexExemptions(empty)
found(empty)
100.00% AI-ism location names
Target: 0 AI-default location names (33 tracked, −20% each)
codexExemptions(empty)
found(empty)
56.62% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1729
totalAiIsms15
found
0
word"measured"
count1
1
word"aftermath"
count1
2
word"etched"
count2
3
word"weight"
count2
4
word"synthetic"
count1
5
word"trembled"
count1
6
word"magnetic"
count1
7
word"flicked"
count1
8
word"shimmered"
count1
9
word"familiar"
count1
10
word"silence"
count1
11
word"spectral"
count1
12
word"mechanical"
count1
highlights
0"measured"
1"aftermath"
2"etched"
3"weight"
4"synthetic"
5"trembled"
6"magnetic"
7"flicked"
8"shimmered"
9"familiar"
10"silence"
11"spectral"
12"mechanical"
100.00% Cliché density
Target: ≤1 cliche(s) per 800-word window
totalCliches0
maxInWindow0
found(empty)
highlights(empty)
100.00% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences99
matches(empty)
85.14% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount3
hedgeCount1
narrationSentences99
filterMatches
0"watch"
1"look"
hedgeMatches
0"tended to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences114
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
maxSentenceWordsSeen64
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1723
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions12
unquotedAttributions1
matches
0"Behind her, Ellis muttered about wasting time on ghost stories, but his voice sounded distant, unimportant."
66.67% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions43
wordCount1210
uniqueNames10
maxNameDensity0.99
worstName"Quinn"
maxWindowNameDensity3
worstWindowName"Eva"
discoveredNames
Harlow2
Quinn12
Tube1
Camden1
Ellis9
Kowalski2
Eva11
Morris2
Victorian1
Detective2
persons
0"Harlow"
1"Quinn"
2"Ellis"
3"Kowalski"
4"Eva"
5"Morris"
places(empty)
globalScore1
windowScore0.667
52.60% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences77
glossingSentenceCount3
matches
0"felt like a market that had been frozen"
1"felt like a shutter pulled down against"
2"something like reluctant respect"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount1723
matches(empty)
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences114
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs29
mean59.41
std29.71
cv0.5
sampleLengths
0115
1115
254
3109
458
591
654
769
819
927
1046
1180
1258
13104
1466
1530
1667
1762
1859
1942
2060
2122
2211
2319
2481
2549
2619
2796
2841
98.17% Passive voice overuse
Target: ≤2% passive sentences
passiveCount2
totalSentences99
matches
0"been frozen"
1"been heated"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount2
totalVerbs209
matches
0"was willing"
1"was beginning"
42.61% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount3
semicolonCount2
flaggedSentences4
totalSentences114
ratio0.035
matches
0"The market had clearly been trading when violence struck; the stalls suggested dozens of people, yet only one set of fresh prints led away from the body toward a bricked-up archway at the far end of the platform."
1"The most valuable-looking items—stoppered bottles containing liquid that still shimmered with inner light—remained untouched."
2"The compass, the sigils, the insufficient blood, the untouched valuables, the impossible needle—all of it pointed away from the simple narrative Ellis wanted."
3"The nervous habit had stopped; in its place was something like reluctant respect."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount684
adjectiveStacks0
stackExamples(empty)
adverbCount20
adverbRatio0.029239766081871343
lyAdverbCount7
lyAdverbRatio0.01023391812865497
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences114
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences114
mean15.11
std11.18
cv0.74
sampleLengths
030
124
228
333
415
535
610
716
821
98
1010
1116
128
1330
145
1513
1629
1711
185
196
202
2138
224
2354
243
2514
2611
2711
2815
2910
306
3121
325
338
348
3510
3623
379
3822
3921
4017
418
4211
435
4422
456
467
4733
4812
495
62.28% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats4
diversityRatio0.39473684210526316
totalSentences114
uniqueOpeners45
34.72% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount1
totalSentences96
matches
0"Instead they sat like offerings."
ratio0.01
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount24
totalSentences96
matches
0"Her boots rang sharp against"
1"It felt like a market"
2"he said, offering a curt"
3"She checked her worn leather"
4"She had heard Ellis's brand"
5"She reached for an object"
6"It trembled, then locked toward"
7"She turned the instrument slowly."
8"She slipped the compass into"
9"She tucked a stray curl"
10"She rose, keeping the compass"
11"She tucked the curl again."
12"She walked the perimeter of"
13"She returned to Eva."
14"She held the bagged instrument"
15"She had never believed them."
16"She crossed to the bricked"
17"She ran her fingers across"
18"she said aloud, piecing the"
19"She had spent three years"
ratio0.25
32.92% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount82
totalSentences96
matches
0"Detective Harlow Quinn descended the"
1"Her boots rang sharp against"
2"The call had come in"
3"The platform opened before her"
4"Vials of luminous liquid glinted"
5"This was no"
6"It felt like a market"
7"Sergeant Ellis waited near the"
8"he said, offering a curt"
9"Quinn crouched beside the corpse."
10"The man had fallen backward"
11"The wounds were ugly, yet"
12"Blood had leaked, but not"
13"That was the first discrepancy."
14"She checked her worn leather"
15"The market had clearly been"
16"Ellis shifted his weight."
17"Quinn said nothing."
18"She had heard Ellis's brand"
19"Tonight it felt like a"
ratio0.854
100.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount2
totalSentences96
matches
0"Now the same metallic scent"
1"Now, in the cold light"
ratio0.021
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences54
technicalSentenceCount3
matches
0"At forty-one, with closely cropped salt-and-pepper hair and a sharp jaw that rarely softened, she had learned to trust the prickle that crawled across her scalp…"
1"Strange metal talismans etched with symbols she could not name lay beside coins that looked minted from no currency she recognised."
2"It trembled, then locked toward the bricked archway with an unnatural steadiness, as though the wall itself exerted a magnetic pull."
62.50% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags8
uselessAdditionCount1
matches
0"Eva said, voice low but steady"
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags6
fancyCount1
fancyTags
0"Eva admitted (admit)"
dialogueSentences23
tagDensity0.261
leniency0.522
rawRatio0.167
effectiveRatio0.087
85.9922%