Run: 2026-02-18-01KHQ94N33HDVHRQAWWFSS9XC1

Run Details

Duration:
39.4s
Cost:
$0.025239
Provider:
Anthropic

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
The call had come in at half two in the morning — a body in an abandoned Tube station beneath Camden, discovered by a drunk who'd stumbled through a rusted service door looking for somewhere to sleep. Quinn had been awake anyway, sitting at her kitchen table with cold tea and a folder she couldn't bring herself to close, so she'd taken the call herself rather than passing it down the chain. She ducked under the police tape at 3:17 a.m., according to her watch, and the smell hit her before she'd made it ten steps into the tunnel: old stone, old water, something else beneath it — sweet and sharp, like overripe fruit cut with ammonia. Her torch beam swept the curved walls. The tile work was Victorian, cream and oxblood, most of it cracked. Decommissioned signage still clung to brackets along the platform edge, ghost lettering for a station that didn't appear on any current map she'd ever seen. Her DS, Reeves, was already there, crouched near the body with his own torch and a notepad, his breath clouding in the cold air. "Thought you were off tonight," he said without looking up. "Evidently not." Quinn moved along the platform edge, scanning the space before she let herself look at the body. She'd learned that from Morris, years ago. Look at the room before you look at the dead. The dead will keep. The station was large. A proper terminus layout — two platform tracks running parallel, the far rail beds sunk below platform level, choked with a generation's worth of debris. But the platform itself had been cleared. Not cleaned, not maintained — cleared, deliberately, recently. The grime on the tiles stopped in a rough rectangle roughly eight meters long and four wide, as if someone had dragged things away from the center rather than simply neglecting the edges. Around the perimeter of that cleared space, Quinn's torchlight caught faint marks on the tile. She stepped closer to one. A sigil. Something carved directly into the tile with a sharp instrument, shallow but deliberate. She straightened and moved toward Reeves. Now she looked at the body. Male, late thirties, well-dressed — wool overcoat, decent shoes, no wallet in the exterior pockets. He was lying on his back with his arms at his sides in an arrangement that didn't match any fall she'd ever seen. People who died suddenly didn't lay themselves out. His face was slack, undamaged. No visible wounds. "Forensics?" Quinn asked. "En route. Uniform found him twenty minutes before they rang you." Reeves stood, tucking his pen behind his ear. He was ten years younger than Quinn and carried a cheerful confidence she'd never fully trusted. "Looks like a handover gone wrong. Drug deal, maybe. Someone stripped the wallet and left him." Quinn crouched where Reeves had been and studied the man's hands. His nails were unbroken. No defensive scraping, no bruising on the knuckles. She tilted his chin gently to one side with a gloved finger and checked his neck. Nothing. She checked his wrists. On the inside of his left forearm, half-hidden by his cuff, was a mark. Not a bruise. A shape burned cleanly into the skin, the edges precise as a brand, but without the surrounding tissue damage heat should have caused. The same sigil she'd seen on the tile. She stood up. "Drug deal," she repeated. "Fits the location. These old service tunnels get used for all sorts." Reeves shrugged. "Stripped his ID, left him here. Probably panicked." "Then where's the struggle?" Quinn moved her torch slowly across the cleared tile. "No blood. No overturned merchandise. Nothing knocked over, nothing dropped. If someone panicked badly enough to leave the body, they didn't have time to police the scene." She gestured at the deliberate clearing. "And this wasn't them doing it in a hurry." Reeves frowned. "Could've been done beforehand." "Why? For a drug handover, you clear eight square meters of tile and light out a pattern on it?" He opened his mouth, then closed it. Quinn walked the perimeter of the cleared space slowly, counting the sigils. Seven of them, evenly spaced. The spacing was too precise for a person to have paced it out without measuring. She photographed each one with her phone before forensics arrived to contaminate everything with good intentions. At the far end of the platform, near the mouth of the old tunnel, her torch caught something half-tucked behind a rusted support beam. She crossed to it, crouched, and didn't touch it immediately — just looked. A small brass compass, roughly the size of a pocket watch, its casing covered in a fine bloom of green verdigris. The face was etched with fine markings that weren't navigational — the same style as the sigils on the tile, compressed and layered. She angled her torch and watched the needle. It wasn't pointing north. It was pointing back down the platform, directly toward the body. Her jaw tightened. She'd seen something like this once before. Not the object itself but the principle of it — a tool that oriented to something other than what tools were supposed to orient to. Morris had tried to explain it to her the week before he died, in the parking structure on Aldgate, laughing at himself as he said it because he hadn't believed it either, not quite. She'd told him he was working too hard. She'd been wrong about that. Quinn straightened and looked back down the platform. Reeves was on his phone now, turned away, explaining something to someone with the careful patience of a man managing up. The forensics van would arrive within the hour. After that, this scene would become evidence in a case that would be filed under something it wasn't. She photographed the compass without touching it and noted the exact position against the beam in her own book, not the official log. Then she pulled out her phone and scrolled to a number she'd added six months ago and never used. Eva Kowalski answered on the fourth ring, her voice thick with sleep and then, as Quinn identified herself, abruptly alert. "The Tube station under Camden," Quinn said quietly, her eyes still on the compass needle as it trembled, still pointing. "I need to know what I'm looking at. Get here before my forensics team does, and bring whatever you keep in that bag of yours." She paused. "And don't tell me this is nothing. I'm past that." A silence on the line. Then the soft sound of a lamp clicking on.
created_at"2026-02-18T02:27:29.236673+00:00" 2/18/2026, 2:27:29 AM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency430
moderation_latency(null)
generation_time39392
tokens_prompt923
tokens_completion1647
native_tokens_prompt938
native_tokens_completion1495
native_tokens_completion_images(null)
native_tokens_reasoning0
native_tokens_cached0
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"stop"
usage0.025239
router(null)
provider_responses
0
id"msg_014RmWTQa2rujKDiZo4NXacb"
status200
is_byokfalse
latency430
endpoint_id"6d408764-7dd7-4626-bb87-a6cc1589bc86"
provider_name"Anthropic"
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
api_type"completions"
id"gen-1771381609-zHeScS3V7XusF0FlUN4C"
upstream_id"msg_014RmWTQa2rujKDiZo4NXacb"
total_cost0.025239
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags10
adverbTagCount1
adverbTags
0"Quinn said quietly [quietly]"
dialogueSentences16
tagDensity0.625
leniency1
rawRatio0.1
effectiveRatio0.1
77.11% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1092
totalAiIsmAdverbs5
found
0
adverb"deliberately"
count1
1
adverb"suddenly"
count1
2
adverb"gently"
count1
3
adverb"slowly"
count2
highlights
0"deliberately"
1"suddenly"
2"gently"
3"slowly"
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)
77.11% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1092
totalAiIsms5
found
0
word"scanning"
count1
1
word"etched"
count1
2
word"structure"
count1
3
word"trembled"
count1
4
word"silence"
count1
highlights
0"scanning"
1"etched"
2"structure"
3"trembled"
4"silence"
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
narrationSentences76
matches(empty)
48.87% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount4
hedgeCount1
narrationSentences76
filterMatches
0"watch"
1"look"
hedgeMatches
0"tried to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences82
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
maxSentenceWordsSeen44
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1097
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions9
unquotedAttributions0
matches(empty)
83.33% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions25
wordCount937
uniqueNames8
maxNameDensity1.17
worstName"Quinn"
maxWindowNameDensity2.5
worstWindowName"Quinn"
discoveredNames
Tube1
Camden1
Victorian1
Reeves7
Quinn11
Morris2
Aldgate1
Kowalski1
persons
0"Camden"
1"Reeves"
2"Quinn"
3"Morris"
4"Aldgate"
5"Kowalski"
places(empty)
globalScore0.913
windowScore0.833
57.41% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences54
glossingSentenceCount2
matches
0"something like this once before"
1"not quite"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.912
wordCount1097
matches
0"Not the object itself but the principle of it"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences82
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs31
mean35.39
std26.88
cv0.759
sampleLengths
072
189
224
310
440
597
615
712
854
93
1051
1144
1248
133
144
1522
1655
176
1819
197
2048
2137
2267
233
2474
255
2655
2742
2820
2957
3014
91.41% Passive voice overuse
Target: ≤2% passive sentences
passiveCount3
totalSentences76
matches
0"been cleared"
1"was etched"
2"were supposed"
27.96% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount4
totalVerbs155
matches
0"was lying"
1"wasn't pointing"
2"was pointing"
3"was working"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount8
semicolonCount0
flaggedSentences8
totalSentences82
ratio0.098
matches
0"The call had come in at half two in the morning — a body in an abandoned Tube station beneath Camden, discovered by a drunk who'd stumbled through a rusted service door looking for somewhere to sleep."
1"She ducked under the police tape at 3:17 a.m., according to her watch, and the smell hit her before she'd made it ten steps into the tunnel: old stone, old water, something else beneath it — sweet and sharp, like overripe fruit cut with ammonia."
2"A proper terminus layout — two platform tracks running parallel, the far rail beds sunk below platform level, choked with a generation's worth of debris."
3"Not cleaned, not maintained — cleared, deliberately, recently."
4"Male, late thirties, well-dressed — wool overcoat, decent shoes, no wallet in the exterior pockets."
5"She crossed to it, crouched, and didn't touch it immediately — just looked."
6"The face was etched with fine markings that weren't navigational — the same style as the sigils on the tile, compressed and layered."
7"Not the object itself but the principle of it — a tool that oriented to something other than what tools were supposed to orient to."
99.32% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount932
adjectiveStacks0
stackExamples(empty)
adverbCount38
adverbRatio0.0407725321888412
lyAdverbCount17
lyAdverbRatio0.018240343347639486
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences82
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences82
mean13.38
std9.48
cv0.709
sampleLengths
037
135
245
37
412
525
624
710
819
97
1010
114
124
1325
147
158
1633
1715
185
192
2013
216
226
2315
2423
258
265
273
283
2919
3016
3116
3211
334
348
3516
361
374
3814
393
4023
418
423
434
4414
458
4613
4733
489
492
75.61% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats3
diversityRatio0.47560975609756095
totalSentences82
uniqueOpeners39
96.62% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount2
totalSentences69
matches
0"Then she pulled out her"
1"Then the soft sound of"
ratio0.029
69.28% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount26
totalSentences69
matches
0"She ducked under the police"
1"Her torch beam swept the"
2"Her DS, Reeves, was already"
3"he said without looking up"
4"She'd learned that from Morris,"
5"She stepped closer to one."
6"She straightened and moved toward"
7"He was lying on his"
8"His face was slack, undamaged."
9"He was ten years younger"
10"His nails were unbroken."
11"She tilted his chin gently"
12"She checked his wrists."
13"She stood up."
14"She gestured at the deliberate"
15"He opened his mouth, then"
16"She photographed each one with"
17"She crossed to it, crouched,"
18"She angled her torch and"
19"It wasn't pointing north."
ratio0.377
83.19% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount52
totalSentences69
matches
0"The call had come in"
1"Quinn had been awake anyway,"
2"She ducked under the police"
3"Her torch beam swept the"
4"The tile work was Victorian,"
5"Her DS, Reeves, was already"
6"he said without looking up"
7"Quinn moved along the platform"
8"She'd learned that from Morris,"
9"The dead will keep."
10"The station was large."
11"A proper terminus layout —"
12"The grime on the tiles"
13"She stepped closer to one."
14"Something carved directly into the"
15"She straightened and moved toward"
16"He was lying on his"
17"People who died suddenly didn't"
18"His face was slack, undamaged."
19"Reeves stood, tucking his pen"
ratio0.754
72.46% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount1
totalSentences69
matches
0"Now she looked at the"
ratio0.014
56.28% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences33
technicalSentenceCount4
matches
0"Decommissioned signage still clung to brackets along the platform edge, ghost lettering for a station that didn't appear on any current map she'd ever seen."
1"The grime on the tiles stopped in a rough rectangle roughly eight meters long and four wide, as if someone had dragged things away from the center rather than s…"
2"He was lying on his back with his arms at his sides in an arrangement that didn't match any fall she'd ever seen."
3"The face was etched with fine markings that weren't navigational — the same style as the sigils on the tile, compressed and layered."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags10
uselessAdditionCount0
matches(empty)
87.50% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags4
fancyCount1
fancyTags
0"she repeated (repeat)"
dialogueSentences16
tagDensity0.25
leniency0.5
rawRatio0.25
effectiveRatio0.125
83.4484%