Run: 2026-06-01-01KT1GRM710M45B7J87MGBHKVT

Run Details

Duration:
41.6s
Cost:
$0.062450
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 smell hit Quinn before the lights did — copper and ozone and something older underneath, like wet stone that had never seen the sun. She ducked beneath the police tape strung across the mouth of the service tunnel and let her torch cut a slow arc across the platform. Camden Town. Or beneath it, anyway. The old Tube station had been sealed since the forties, according to the constable who'd waved her through. The tiles were the colour of nicotine, half of them cracked or missing, and the curved ceiling vanished into a darkness her torch couldn't reach. Somewhere down the throat of the tunnel, water dripped with the patience of decades. "Forty minutes from a body to a detective inspector," said a voice. "Should I be flattered?" DS Reyes stood at the far edge of the platform, his torch propped against a wall so it threw his shadow long and thin across the tiles. He was young, eager, the sort who still thought a corpse was a puzzle rather than a person. Quinn liked him well enough. That didn't mean she trusted his eyes. "Talk me through it," she said. "Victim's male, mid-forties, no ID. Found by an urban explorer who came down through the old lift shaft — kid nearly broke his ankles on the ladder, called it in, then promptly threw up over there." Reyes nodded toward a corner. "Cause of death looks like cardiac arrest. No wounds, no blood, no sign of a struggle. Tox screen's pending, but I'd put money on natural causes. Bloke wanders somewhere he shouldn't, heart gives out in the dark, simple as." Quinn crossed to the body without answering. The man lay on his back near the platform edge, one arm flung above his head, the other across his chest. His face was frozen in an expression Quinn had seen before — not pain, not fear exactly, but something worse. A kind of recognition. As though he'd glimpsed the answer to a question he'd been wise enough never to ask. She crouched. Her knees protested; eighteen years on the job had a way of settling into the joints. She studied the man's hand, the one across his chest. The fingers were curled, and beneath the nails she saw a faint residue, pale as ash. "Cardiac arrest doesn't leave that face," she said. "People die scared, guv. Dark place, alone—" "His shoes are clean." Reyes paused. "Sorry?" Quinn shone her torch along the man's body, slow, deliberate. "You said he wandered down here. Through the lift shaft, presumably, like the boy who found him. That's a rust-and-grease ladder forty feet down into a tunnel that floods. The explorer nearly broke his ankles. But look." She tapped the air above the soles of the man's brogues — leather soles, barely scuffed. "No grease. No rust. No track of mud across this platform. The dust here hasn't been disturbed except where you and the SOCOs have walked." Reyes came closer, frowning. "So someone carried him." "You'd see drag marks. You'd see the carrier's prints." She swept the torch in a circle. The dust lay smooth and grey as a frozen lake, broken only by the bright disturbance of recent boots — all of them coming from the tunnel mouth she herself had entered through. "He didn't walk here. He wasn't carried here. He simply arrived." "That's not possible." Quinn said nothing. She'd stopped trusting that word three years ago, the night DS Morris had walked into a derelict warehouse ahead of her and never walked out — no body, no blood, no exit but the one she'd been watching. The case file still sat in her desk drawer, closed by everyone but her. She'd learned, since then, to look at the spaces where the evidence ran out, and to take seriously what filled them. She turned her attention back to the residue under the dead man's fingernails. With a gloved hand she scraped a little onto a slide and held it to the light. Not ash. Salt. Fine crystalline salt, white and pure. And then she saw the floor. It was faint — so faint that Reyes's torch, propped and static, had washed it out entirely. But from this angle, with her own beam raking low across the tiles, she could make out a pattern in the dust around the body. Not footprints. A circle. A ring perhaps eight feet across, scored into the grime by something, the line of it unnaturally clean, and within it markings she couldn't name — angular, deliberate, repeating. The salt under the man's nails matched a broken arc in the ring, as though he'd reached out in his last moments and dragged his fingers through it. Trying to break it. Trying to get out. "Reyes." Her voice had gone quiet. "Pick up your torch. Hold it low, near the floor. Tell me what you see." He did. She watched his face change as the circle resolved out of the dust — watched him open his mouth, then close it. "That's — graffiti," he tried. "Some occult nonsense, kids messing about—" "Kids don't carry a man down a sealed shaft, lay him in the centre of a sigil, and leave without footprints." Quinn straightened, her knees cracking, and reached into her coat. Her fingers found the small brass shape she'd carried since the Morris case — heavier than it looked, its casing furred green with verdigris, its face crowded with etched marks that mirrored, she now realised with a cold turn of the stomach, some of the symbols scored into the floor. The needle had been still all evening. Now it was trembling. She held the Veil Compass flat in her palm and watched the needle drag itself around, hunting, until it locked — not toward the tunnel, not toward the surface, but toward the centre of the circle. Toward the dead man. Toward the place where, if she was reading the device right, the world had been thin enough an hour ago that something had reached through it. "Guv?" Reyes's voice was small. "What is that?" Quinn closed her hand over the compass before he could see the needle move. Some things you didn't put in a report. Some things you carried to the people who understood them — and she knew exactly the curly-haired researcher in the British Museum's basement who would. "Natural causes," she said flatly, pocketing the brass. "Write that up. Then get every photograph of this floor you can take before forensics tramps it flat." She looked once more at the dead man's face, at the terrible recognition frozen there. "And Reyes — don't step inside the circle. Not for any reason." He didn't ask why. That, at least, she was grateful for.
created_at"2026-06-01T11:58:02.984Z" 6/1/2026, 11:58:02 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3701
moderation_latency(null)
generation_time41531
tokens_prompt923
tokens_completion1706
native_tokens_prompt1285
native_tokens_completion2241
native_tokens_completion_images(null)
native_tokens_reasoning61
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"end_turn"
service_tier"default"
usage0.06245
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provider_responses
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endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
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is_byokfalse
latency1311
model_permaslug"anthropic/claude-4.8-opus-20260528"
provider_name"Anthropic"
status200
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http_referer(null)
request_id"req-1780315082-YfYmR4Raq0ab9ROiFStT"
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api_type"completions"
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upstream_id"msg_01FA1xwPy3TWRopbpw2Hmcm2"
total_cost0.06245
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Evaluation details

Result Evaluator Details Meta Data
40.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags10
adverbTagCount2
adverbTags
0"she said flatly [flatly]"
1"She looked once [once]"
dialogueSentences25
tagDensity0.4
leniency0.8
rawRatio0.2
effectiveRatio0.16
100.00% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1116
totalAiIsmAdverbs0
found(empty)
highlights(empty)
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)
82.08% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1116
totalAiIsms4
found
0
word"crystalline"
count1
1
word"resolved"
count1
2
word"etched"
count1
3
word"stomach"
count1
highlights
0"crystalline"
1"resolved"
2"etched"
3"stomach"
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
emotionTells1
narrationSentences67
matches
0"was grateful"
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount0
narrationSentences67
filterMatches(empty)
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences80
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen54
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1130
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions10
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions22
wordCount849
uniqueNames9
maxNameDensity0.94
worstName"Quinn"
maxWindowNameDensity2
worstWindowName"Quinn"
discoveredNames
Quinn8
Town1
Tube1
Reyes6
Morris2
Veil1
Compass1
British1
Museum1
persons
0"Quinn"
1"Reyes"
2"Morris"
3"Museum"
places
0"Town"
1"British"
globalScore1
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences42
glossingSentenceCount0
matches(empty)
0.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches5
per1kWords4.425
wordCount1130
matches
0"not pain, not fear exactly, but something worse"
1"not fear exactly, but something worse"
2"no exit but"
3"not toward the tunnel, not toward the surface, but toward the centre of the circle"
4"not toward the surface, but toward the centre of the circle"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences80
matches
0"trusting that word"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs30
mean37.67
std31.09
cv0.825
sampleLengths
050
163
216
357
46
580
668
744
88
97
104
113
1288
138
1460
153
1676
1739
186
19111
2021
2124
2211
2381
2411
2566
268
2747
2853
2911
89.55% Passive voice overuse
Target: ≤2% passive sentences
passiveCount3
totalSentences67
matches
0"been sealed"
1"was frozen"
2"were curled"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount1
totalVerbs135
matches
0"was reading"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount11
semicolonCount1
flaggedSentences12
totalSentences80
ratio0.15
matches
0"The smell hit Quinn before the lights did — copper and ozone and something older underneath, like wet stone that had never seen the sun."
1"His face was frozen in an expression Quinn had seen before — not pain, not fear exactly, but something worse."
2"Her knees protested; eighteen years on the job had a way of settling into the joints."
3"\"You said he wandered down here. Through the lift shaft, presumably, like the boy who found him. That's a rust-and-grease ladder forty feet down into a tunnel that floods. The explorer nearly broke his ankles. But look.\" She tapped the air above the soles of the man's brogues — leather soles, barely scuffed."
4"The dust lay smooth and grey as a frozen lake, broken only by the bright disturbance of recent boots — all of them coming from the tunnel mouth she herself had entered through."
5"She'd stopped trusting that word three years ago, the night DS Morris had walked into a derelict warehouse ahead of her and never walked out — no body, no blood, no exit but the one she'd been watching."
6"It was faint — so faint that Reyes's torch, propped and static, had washed it out entirely."
7"A ring perhaps eight feet across, scored into the grime by something, the line of it unnaturally clean, and within it markings she couldn't name — angular, deliberate, repeating."
8"She watched his face change as the circle resolved out of the dust — watched him open his mouth, then close it."
9"Her fingers found the small brass shape she'd carried since the Morris case — heavier than it looked, its casing furred green with verdigris, its face crowded with etched marks that mirrored, she now realised with a cold turn of the stomach, some of the symbols scored into the floor."
10"She held the Veil Compass flat in her palm and watched the needle drag itself around, hunting, until it locked — not toward the tunnel, not toward the surface, but toward the centre of the circle."
11"Some things you carried to the people who understood them — and she knew exactly the curly-haired researcher in the British Museum's basement who would."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount839
adjectiveStacks0
stackExamples(empty)
adverbCount26
adverbRatio0.03098927294398093
lyAdverbCount9
lyAdverbRatio0.010727056019070322
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences80
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences80
mean14.13
std12.11
cv0.858
sampleLengths
025
125
22
34
418
525
614
712
84
927
1018
115
127
136
1441
1539
167
1721
1820
194
2016
212
2216
2310
2416
258
267
274
282
291
3010
3153
3225
334
344
3516
3633
3711
383
393
4038
4114
4221
4313
4417
452
461
476
486
4917
80.00% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats6
diversityRatio0.525
totalSentences80
uniqueOpeners42
59.52% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount1
totalSentences56
matches
0"Somewhere down the throat of"
ratio0.018
91.43% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount18
totalSentences56
matches
0"She ducked beneath the police"
1"He was young, eager, the"
2"His face was frozen in"
3"Her knees protested; eighteen years"
4"She studied the man's hand,"
5"She tapped the air above"
6"She swept the torch in"
7"She'd stopped trusting that word"
8"She'd learned, since then, to"
9"She turned her attention back"
10"It was faint — so"
11"Her voice had gone quiet"
12"She watched his face change"
13"Her fingers found the small"
14"She held the Veil Compass"
15"she said flatly, pocketing the"
16"She looked once more at"
17"He didn't ask why."
ratio0.321
76.07% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount43
totalSentences56
matches
0"The smell hit Quinn before"
1"She ducked beneath the police"
2"The old Tube station had"
3"The tiles were the colour"
4"DS Reyes stood at the"
5"He was young, eager, the"
6"Quinn liked him well enough."
7"That didn't mean she trusted"
8"Reyes nodded toward a corner"
9"Quinn crossed to the body"
10"The man lay on his"
11"His face was frozen in"
12"A kind of recognition."
13"Her knees protested; eighteen years"
14"She studied the man's hand,"
15"The fingers were curled, and"
16"Quinn shone her torch along"
17"She tapped the air above"
18"Reyes came closer, frowning."
19"She swept the torch in"
ratio0.768
100.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount2
totalSentences56
matches
0"As though he'd glimpsed the"
1"Now it was trembling."
ratio0.036
71.43% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences30
technicalSentenceCount3
matches
0"The smell hit Quinn before the lights did — copper and ozone and something older underneath, like wet stone that had never seen the sun."
1"The old Tube station had been sealed since the forties, according to the constable who'd waved her through."
2"Some things you carried to the people who understood them — and she knew exactly the curly-haired researcher in the British Museum's basement who would."
75.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags10
uselessAdditionCount1
matches
0"Quinn straightened, her knees cracking, and reached into her coat"
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags3
fancyCount0
fancyTags(empty)
dialogueSentences25
tagDensity0.12
leniency0.24
rawRatio0
effectiveRatio0
85.5028%