Run: 2026-02-18-01KHQ918KKJJZCYXWSBXZXJD5P

Run Details

Duration:
57.3s
Cost:
$0.037389
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 past two in the morning, and Quinn had driven through rain-slicked streets with her window cracked, needing the cold air to keep her sharp. Now she stood at the mouth of the service entrance to the old Camden Town station — the one that had been shuttered since 1924, according to the placard some heritage board had bolted to the wall and nobody ever read — and she watched the forensics team set up their lights below. The entrance was a steel door set back into the brickwork of a converted music venue. Someone had burned the lock out. Quinn crouched and examined the door frame: the metal around the latch was scorched from the inside, not the outside. She stood, noted the time on her leather watch — 2:51 a.m. — and descended the stairs. The station had that particular smell of old tunnels, mineral and cold, with something else underneath it tonight. Something that reminded her, in a way she couldn't pin down, of the smell in DS Morris's flat the morning after. She pushed the thought away. Detective Constable Patel met her at the bottom of the stairs. He was young enough that being called out in the middle of the night still gave him a kind of bright-eyed alertness rather than the grey fatigue Quinn wore like a second skin. "Victim's a John Doe," Patel said. "Male, fifties, no wallet, no phone. ME puts time of death somewhere between nine and midnight." "Cause?" "That's the thing." He lifted the cordon tape for her. "We're not sure yet." The platform was enormous in the way that abandoned spaces always seemed enormous, freed from the press of commuters that would have given it scale. The forensics lights turned everything harsh and white. Quinn walked the length of it, hands in her coat pockets, eyes moving. The body was positioned at the far end of the platform, near where the tunnel mouth opened into darkness. The man was lying on his back, arms at his sides, in an arrangement that was almost too composed. His face was slack, his lips slightly parted. No visible wounds. No blood. His clothes — good quality, a wool overcoat, leather-soled shoes — were entirely unruffled, as though he'd lain down for a nap and simply not gotten up. "Staging," Quinn said. "That's what DI Fraser thinks. He's over there." Patel tilted his head toward the wall. Fraser was a barrel-chested man from Serious Crimes who had a habit of reaching conclusions before the evidence did and then constructing a path backward. He was talking to a junior officer and gesturing with a coffee cup. "Quinn," he said when she approached. "Nasty one." "What's your read?" "Drug exchange gone wrong, most likely. This whole area's got a history. Market stalls operating down here, off the books — we've had intelligence on it for months. Someone moved a meeting underground, things turned. He's been posed afterward, show of force. We're looking for associates, known dealers in the Camden network." Quinn looked at the body again. "What drug kills a man his age with no symptoms, no injection sites, no obvious ingestion evidence, and leaves him looking like he died in his sleep?" Fraser shrugged. "Toxicology'll tell us." "Mm." She turned away from him and crouched beside the body. She didn't touch anything. She looked. The man's right hand was open, palm up, fingers slightly curled. His left hand was closed. Not clenched — closed, as if he'd been holding something and the grip had relaxed in death. Quinn looked up at the attending forensics officer. "Has the left hand been documented?" "Photographed, yes. Nothing in it." "What do you mean, nothing in it?" "Nothing. It was empty when we got here." Quinn looked at the floor around the body. The platform was dirty with decades of grime and old dust, and in that dust there were disturbances — footprints, multiple sets, some from the forensics team and some older. But closest to the body, on the left side, there was a mark in the dust she couldn't account for. A circular impression, roughly three centimetres in diameter, with a faint radial pattern around it. Like something had been resting there and been picked up. She photographed it with her phone. "Patel." He materialised at her elbow. "Who found the body?" "Anonymous call. Male voice, according to dispatch. Wouldn't give a name." "Time of call?" "One forty-seven a.m." Quinn stood. She walked toward the tunnel mouth and stopped where the platform edge met the dark. She took out her torch and shone it down the tunnel. Nothing moved. But on the curved wall of the tunnel, just at the edge of the light's reach, there was something scratched into the old plaster. Symbols. Not graffiti — too deliberate, too evenly spaced. She photographed them. She was still looking at the tunnel wall when she heard footsteps on the stairs. The figure that appeared at the bottom of the platform stairs wore a long coat and carried a worn leather satchel that looked like it belonged in a university library. Red curly hair caught the forensics lights. Round glasses. The woman stopped when she saw the cordon tape and the assembled officers, and something crossed her face — not surprise exactly, but a rapid, private recalibration. Quinn moved before anyone else had registered the intrusion. "Excuse me." She had her badge out. "This is an active crime scene. How did you get past the perimeter?" The woman blinked. Her hand went to the side of her head, tucking a curl behind her left ear. "I'm sorry — I saw the lights, I was just—" "Name." A pause. "Eva. Eva Kowalski." Quinn looked at her. The satchel was bulging. The woman's green eyes were moving over the scene with a quality of observation that wasn't voyeurism and wasn't horror. It was something closer to recognition. "You've been here before," Quinn said. It wasn't a question. Eva Kowalski's expression confirmed it, even as her mouth prepared a different answer. "I do research," Eva said carefully. "Local history. Abandoned infrastructure. This station has been of academic interest for—" "At three in the morning." Silence. Quinn stepped closer. She was nine inches taller than this woman but she didn't use the height as a weapon — she simply held her ground and waited. In her experience, the wait was worth more than the pressure. Eva's hand moved to the satchel strap, gripping it. "Is there — has something happened?" "A man is dead." Something shifted in Eva's face. Genuine, this time. Quinn had learned, over eighteen years, to read the difference between performed emotion and real feeling, and this was real — a flash of something that wasn't quite grief but was adjacent to it. "Did he have anything with him?" Eva asked. "When they found him?" Quinn studied her. "Why would you ask that?" "I'm just — it's a strange place for someone to—" "Ms. Kowalski." Quinn kept her voice level. "I'm going to need to speak with you at length. Tonight, not tomorrow. You can either do that here, or you can do it at the station." She let a half-second pass. "This is a courtesy." Eva looked at the body. Then she looked at the symbols Quinn had photographed on the tunnel wall. Then she looked at Quinn, and in her eyes there was a calculation happening — the same kind Quinn recognised from mirrors, the interior arithmetic of someone deciding how much truth was safe. "I know what this place is," Eva said finally, quietly, so that only Quinn could hear. "What it's used for." "Tell me." "You'll think I'm—" "I've been doing this job for a long time," Quinn said. "I've seen a lot of things I couldn't explain." She thought of Morris. She thought of that smell in his flat, and the way the case files had simply stopped making sense, and the way no one above her had ever wanted to pursue it. "I'm not as easy to dismiss as I look." Eva studied her for a moment. Then she reached into her satchel, and Quinn's hand moved instinctively to her side before she saw what the woman was drawing out: a book, small and battered, its spine handwritten in two languages. Eva opened it to a page dense with photocopied symbols and held it up. The symbols on the tunnel wall. The same ones. "This is a market," Eva said. "Or it was. It moves — it's never in the same place twice for long. People come here to buy and sell things that you can't get anywhere else." She hesitated. "Things that shouldn't exist." Quinn looked at the circular mark in the dust beside the body. Three centimetres in diameter. Radial pattern. "What's normally sold here?" she asked. "Information. Substances. Tools." Eva's voice had steadied; she was on familiar ground now, academic footing. "Navigational instruments. There's one — a brass compass. Small. Sigils on the face. It finds—" She stopped. "It finds what?" Eva looked at the tunnel mouth. At the dark beyond the platform's edge. "Doorways," she said. "It finds doorways to places that shouldn't be accessible." Quinn turned back to the body. The closed left hand. The circular mark in the dust where something small had rested, then been removed. The composed, bloodless stillness of a man who had come here to buy something, or to sell it, or perhaps to take it from someone who hadn't wanted to give it up. She thought: someone got here before we did. She thought: someone knew to come. She looked at Eva Kowalski and made the only decision that made sense in the circumstances. "Tell me everything you know," she said. "From the beginning. And don't leave anything out because you think I won't believe it."
created_at"2026-02-18T02:25:56.3146+00:00" 2/18/2026, 2:25:56 AM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency469
moderation_latency(null)
generation_time57207
tokens_prompt923
tokens_completion2502
native_tokens_prompt938
native_tokens_completion2305
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"
usage0.037389
router(null)
provider_responses
0
id"msg_01F9C1dacZJ1DX7KwPAWpSkX"
status200
is_byokfalse
latency465
endpoint_id"6d408764-7dd7-4626-bb87-a6cc1589bc86"
provider_name"Anthropic"
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
api_type"completions"
id"gen-1771381498-CKkBvTXOcL2T6DSpHxRq"
upstream_id"msg_01F9C1dacZJ1DX7KwPAWpSkX"
total_cost0.037389
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"

Evaluation details

Result Evaluator Details Meta Data
99.15% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags23
adverbTagCount3
adverbTags
0"She turned away [away]"
1"Eva said carefully [carefully]"
2"Eva said finally [finally]"
dialogueSentences59
tagDensity0.39
leniency0.78
rawRatio0.13
effectiveRatio0.102
90.84% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1638
totalAiIsmAdverbs3
found
0
adverb"slightly"
count2
1
adverb"carefully"
count1
highlights
0"slightly"
1"carefully"
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)
90.84% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1638
totalAiIsms3
found
0
word"footsteps"
count1
1
word"silence"
count1
2
word"familiar"
count1
highlights
0"footsteps"
1"silence"
2"familiar"
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
narrationSentences113
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount0
narrationSentences113
filterMatches
0"watch "
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences149
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
maxSentenceWordsSeen51
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1651
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions17
unquotedAttributions0
matches(empty)
0.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions52
wordCount1222
uniqueNames12
maxNameDensity1.96
worstName"Quinn"
maxWindowNameDensity5
worstWindowName"Quinn"
discoveredNames
Quinn24
Camden1
Town1
Morris2
Constable1
Patel3
Fraser2
Serious1
Crimes1
Kowalski2
Silence1
Eva13
persons
0"Quinn"
1"Morris"
2"Constable"
3"Patel"
4"Fraser"
5"Kowalski"
6"Eva"
places
0"Camden"
1"Town"
2"Serious"
globalScore0.518
windowScore0
38.06% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences67
glossingSentenceCount3
matches
0"seemed enormous freed from the press of commuters that would have given it scale"
1"looked like it belonged in a university l"
2"quite grief but was adjacent to it"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.606
wordCount1651
matches
0"not surprise exactly, but a rapid, private recalibration"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences149
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs70
mean23.59
std22.24
cv0.943
sampleLengths
084
159
244
344
422
51
614
746
878
93
1015
1138
128
133
1452
1533
165
1717
1841
196
205
217
228
2383
246
2510
2611
273
283
2966
3015
3166
329
3320
3429
351
365
3734
386
3917
4018
415
421
4339
4415
454
4642
4712
488
4910
89.74% Passive voice overuse
Target: ≤2% passive sentences
passiveCount5
totalSentences113
matches
0"been shuttered"
1"being called"
2"was positioned"
3"been picked"
4"been removed"
73.62% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount4
totalVerbs211
matches
0"was lying"
1"was talking"
2"was bulging"
3"was drawing"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount13
semicolonCount1
flaggedSentences12
totalSentences149
ratio0.081
matches
0"Now she stood at the mouth of the service entrance to the old Camden Town station — the one that had been shuttered since 1924, according to the placard some heritage board had bolted to the wall and nobody ever read — and she watched the forensics team set up their lights below."
1"She stood, noted the time on her leather watch — 2:51 a.m."
2"— and descended the stairs."
3"His clothes — good quality, a wool overcoat, leather-soled shoes — were entirely unruffled, as though he'd lain down for a nap and simply not gotten up."
4"Not clenched — closed, as if he'd been holding something and the grip had relaxed in death."
5"The platform was dirty with decades of grime and old dust, and in that dust there were disturbances — footprints, multiple sets, some from the forensics team and some older."
6"Not graffiti — too deliberate, too evenly spaced."
7"The woman stopped when she saw the cordon tape and the assembled officers, and something crossed her face — not surprise exactly, but a rapid, private recalibration."
8"She was nine inches taller than this woman but she didn't use the height as a weapon — she simply held her ground and waited."
9"Quinn had learned, over eighteen years, to read the difference between performed emotion and real feeling, and this was real — a flash of something that wasn't quite grief but was adjacent to it."
10"Then she looked at Quinn, and in her eyes there was a calculation happening — the same kind Quinn recognised from mirrors, the interior arithmetic of someone deciding how much truth was safe."
11"\"Information. Substances. Tools.\" Eva's voice had steadied; she was on familiar ground now, academic footing."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1214
adjectiveStacks0
stackExamples(empty)
adverbCount46
adverbRatio0.03789126853377265
lyAdverbCount16
lyAdverbRatio0.013179571663920923
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences149
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences149
mean11.08
std9.86
cv0.89
sampleLengths
031
153
216
36
420
512
65
718
821
95
1011
1133
126
1316
141
1510
164
1725
188
1913
2019
2119
228
233
242
2527
263
2715
2825
2913
306
312
323
3352
346
3527
362
373
3811
394
402
4111
425
4317
448
456
465
477
488
498
64.43% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats14
diversityRatio0.4429530201342282
totalSentences149
uniqueOpeners66
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount3
totalSentences92
matches
0"Then she looked at the"
1"Then she looked at Quinn,"
2"Then she reached into her"
ratio0.033
98.26% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount28
totalSentences92
matches
0"She stood, noted the time"
1"She pushed the thought away."
2"He was young enough that"
3"He lifted the cordon tape"
4"His face was slack, his"
5"His clothes — good quality,"
6"He was talking to a"
7"he said when she approached"
8"She turned away from him"
9"She didn't touch anything."
10"His left hand was closed."
11"She photographed it with her"
12"He materialised at her elbow"
13"She walked toward the tunnel"
14"She took out her torch"
15"She photographed them."
16"She was still looking at"
17"She had her badge out"
18"Her hand went to the"
19"It was something closer to"
ratio0.304
46.96% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount76
totalSentences92
matches
0"The call had come in"
1"The entrance was a steel"
2"Someone had burned the lock"
3"Quinn crouched and examined the"
4"She stood, noted the time"
5"The station had that particular"
6"Something that reminded her, in"
7"She pushed the thought away."
8"Detective Constable Patel met her"
9"He was young enough that"
10"He lifted the cordon tape"
11"The platform was enormous in"
12"The forensics lights turned everything"
13"Quinn walked the length of"
14"The body was positioned at"
15"The man was lying on"
16"His face was slack, his"
17"His clothes — good quality,"
18"Patel tilted his head toward"
19"Fraser was a barrel-chested man"
ratio0.826
100.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount2
totalSentences92
matches
0"Now she stood at the"
1"— and descended the stairs."
ratio0.022
43.19% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences43
technicalSentenceCount6
matches
0"The platform was enormous in the way that abandoned spaces always seemed enormous, freed from the press of commuters that would have given it scale."
1"His clothes — good quality, a wool overcoat, leather-soled shoes — were entirely unruffled, as though he'd lain down for a nap and simply not gotten up."
2"Fraser was a barrel-chested man from Serious Crimes who had a habit of reaching conclusions before the evidence did and then constructing a path backward."
3"The woman's green eyes were moving over the scene with a quality of observation that wasn't voyeurism and wasn't horror."
4"Quinn had learned, over eighteen years, to read the difference between performed emotion and real feeling, and this was real — a flash of something that wasn't …"
5"The composed, bloodless stillness of a man who had come here to buy something, or to sell it, or perhaps to take it from someone who hadn't wanted to give it up…"
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags23
uselessAdditionCount1
matches
0"Eva's voice had, academic footing"
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags12
fancyCount0
fancyTags(empty)
dialogueSentences59
tagDensity0.203
leniency0.407
rawRatio0
effectiveRatio0
83.8363%