Run: 2026-05-29-01KSSKBKQE3CGXNZT5A27E8V5H

Run Details

Duration:
45.6s
Cost:
$0.066325
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 light did — copper and rot and something underneath it, something sweet and chemical she couldn't name. She ducked beneath the strip of police tape and let her torch beam slide down the disused stairwell, past tiles the color of old teeth, past graffiti that had faded into the brick. "Watch your footing, ma'am," called a voice from below. "Steps are slick." She didn't answer. She never answered when she was looking. The abandoned station beneath Camden had been sealed since the seventies, according to the transit records DC Patel had pulled on the drive over. No trains, no maintenance, no reason for anyone to be down here. And yet the dust on these steps had been disturbed — not by one set of feet, but by dozens, a churn of overlapping prints that didn't read like a single intruder breaking in. It read like traffic. Like a crowd had passed through and then vanished. Quinn filed that away and kept descending. The platform opened before her in a cathedral of dark. Her torch found the body first — male, mid-thirties, sprawled across the lip where tile met track-bed, one arm flung out as though reaching for something past the edge. Around him, two scene-of-crime officers in paper suits worked under portable floods that threw everything into harsh relief. The light made the blood look black. "Harlow." DI Rennick straightened from his crouch beside the body and pulled down his mask. He'd beaten her here, which she didn't like, and he was smiling, which she liked even less. "Glad they sent you. Open and shut, this one. Drug deal gone wrong. Look at the arm." She looked at the arm. Old track marks, faded to silver. A fresh one in the crook of the elbow, neat as a tailor's stitch. "Overdose?" she said. "Overdose, then dumped. Someone panicked, hauled him down here to lose the body. These old stations, nobody comes near them." Rennick gestured at the churned dust on the platform with the easy confidence of a man who'd already written his report. "Half of Camden's homeless population probably knows a way in. We'll find the dealer inside a week." Quinn crouched. Her knees protested — forty-one years and eighteen of them on this job had a way of speaking up — but she ignored them, the way she ignored most things that weren't evidence. She brought her torch close to the puncture in the man's arm. Wrong. The word arrived before the reason did, the way it always did. She'd learned to trust it. Eighteen years and one dead partner had taught her that the wrong feeling came first and the proof came after, if you were patient enough to wait for it. "There's no bruising," she said. "What?" "At the injection site. No bruising, no swelling. If he overdosed and died, his heart stopped pumping within minutes. But the tissue around this puncture isn't inflamed at all. It's like the needle went in after." She tilted her head. "After his heart had already stopped. Days after, maybe." Rennick's smile thinned. "So someone staged it. Faked the track mark to make us think OD. Doesn't change the picture, Harlow. Still a body dump." "Then where's the blood from?" That stopped him. She watched him register it the way she had the moment her beam first crossed the platform — the dark pool spreading from beneath the man's torso, soaking into the grout. She rolled him, gently, with two gloved fingers under the shoulder. No wound on the front. No wound she could find at all. And yet the man had bled out a quantity of blood that, by the size of the pool, should have left him pale as paper. Except he wasn't pale. His skin held a flush, a warmth, that had no business clinging to a corpse this cold. She pressed the back of her hand near his jaw, not quite touching. The air around him was wrong, too — cooler than the rest of the platform, a pocket of chill she could feel through the latex. "He's not the source," she murmured. "Sorry?" "The blood. It's pooled under him, but it didn't come out of him. There's no wound." She straightened, sweeping the torch in a slow arc across the platform, and now she saw what the floods had washed out. Markings. Faint, scuffed, half-erased by all those feet, but there: a ring of symbols scored into the concrete, the body lying at its center like a stone dropped in a pond. Sigils. She didn't have a name for the language but she recognized the intent of it, the careful geometry of something meant to contain or to summon. Three years ago she had seen markings like these. Smaller, cruder, chalked on the floor of a warehouse in Deptford where DS Morris had walked through a door and never walked back out. The report had called it a gas leak. Quinn had stopped believing the reports a long time ago. "Rennick." Her voice had gone flat and quiet, the voice she used when she'd stopped guessing. "Who called this in?" "Anonymous tip. Payphone near the Lock." He frowned at her. "Harlow, what are you looking at?" She didn't tell him. He wouldn't see it, the same way he hadn't seen the bruising or the blood, the same way Patel and the SOCOs moved through the ring of symbols without their eyes ever catching on it. That was the thing she'd come to understand in the last three years, the thing that sat in her chest like a swallowed stone: some people looked, and some people saw, and the gap between them was where the dead went missing. She reached into her coat pocket and her fingers closed around the small brass weight she'd carried there for six months now. She drew it out below the line of Rennick's sight — a compass, its casing green with verdigris, its face crowded with etched marks she'd paid more than money for and never regretted. The needle, which should have pointed north, was spinning. Slow, deliberate circles, the way water turns above a drain. Then it stopped. It pointed past the body, past the lip of the platform, into the black mouth of the tunnel where no train had run in fifty years. Quinn rose, sliding the compass back into her pocket. She checked the worn leather watch on her left wrist out of habit, marking the time the way she'd been trained, and noted that her hand was steady. "Bag everything within ten feet of the body," she said. "Photograph the floor before you touch it. The whole floor." "It's just scuff marks—" "Photograph it." She was already moving toward the tunnel, toward the place the needle had pointed, into the cold that thickened with every step. "And Rennick. Don't write the report yet. This isn't a body dump." "Then what is it?" She paused at the threshold of the dark. Somewhere ahead, faint as a held breath, she thought she could hear it — the murmur of a crowd that wasn't there, a market that wasn't there, a door she couldn't see standing open just past the reach of the light. "It's a beginning," she said, and stepped into the tunnel.
created_at"2026-05-29T10:09:26.775Z" 5/29/2026, 10:09:26 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3895
moderation_latency(null)
generation_time45611
tokens_prompt923
tokens_completion1882
native_tokens_prompt1285
native_tokens_completion2396
native_tokens_completion_images(null)
native_tokens_reasoning114
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"
usage0.066325
router(null)
provider_responses
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is_byokfalse
latency1742
model_permaslug"anthropic/claude-4.8-opus-20260528"
provider_name"Anthropic"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.16.0; linux; x64))"
http_referer(null)
request_id"req-1780049366-onIKpYl3gSUBCPd0OZyj"
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api_type"completions"
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upstream_id"msg_01C62zWkaA1MZ9pBz7QLNmMN"
total_cost0.066325
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provider_name"Anthropic"
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Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags12
adverbTagCount0
adverbTags(empty)
dialogueSentences27
tagDensity0.444
leniency0.889
rawRatio0
effectiveRatio0
95.87% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1212
totalAiIsmAdverbs1
found
0
adverb"gently"
count1
highlights
0"gently"
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)
67.00% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1212
totalAiIsms8
found
0
word"churn"
count1
1
word"churned"
count1
2
word"pumping"
count1
3
word"warmth"
count1
4
word"chill"
count1
5
word"could feel"
count1
6
word"weight"
count1
7
word"etched"
count1
highlights
0"churn"
1"churned"
2"pumping"
3"warmth"
4"chill"
5"could feel"
6"weight"
7"etched"
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
narrationSentences70
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount2
hedgeCount0
narrationSentences70
filterMatches
0"look"
1"watch"
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences84
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen42
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1221
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions13
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions15
wordCount1001
uniqueNames7
maxNameDensity0.5
worstName"Quinn"
maxWindowNameDensity1.5
worstWindowName"Rennick"
discoveredNames
Quinn5
Camden1
Patel2
Rennick4
Markings1
Deptford1
Morris1
persons
0"Quinn"
1"Camden"
2"Patel"
3"Rennick"
4"Markings"
5"Morris"
places
0"Deptford"
globalScore1
windowScore1
47.96% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences49
glossingSentenceCount2
matches
0"as though reaching for something past the edge"
1"not quite touching"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.819
wordCount1221
matches
0"not by one set of feet, but by dozens, a churn of overlapping prints"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences84
matches
0"noted that her"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs35
mean34.89
std27.72
cv0.795
sampleLengths
056
112
210
383
47
564
649
725
83
958
1047
1147
125
131
1449
1525
165
1782
1859
196
201
2196
2251
2320
2416
2581
2674
2729
2837
2920
304
3136
324
3349
3410
90.23% Passive voice overuse
Target: ≤2% passive sentences
passiveCount3
totalSentences70
matches
0"been sealed"
1"been disturbed "
2"been trained"
78.79% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount3
totalVerbs165
matches
0"was looking"
1"was spinning"
2"was already moving"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount9
semicolonCount0
flaggedSentences8
totalSentences84
ratio0.095
matches
0"The smell hit Quinn before the light did — copper and rot and something underneath it, something sweet and chemical she couldn't name."
1"And yet the dust on these steps had been disturbed — not by one set of feet, but by dozens, a churn of overlapping prints that didn't read like a single intruder breaking in."
2"Her torch found the body first — male, mid-thirties, sprawled across the lip where tile met track-bed, one arm flung out as though reaching for something past the edge."
3"Her knees protested — forty-one years and eighteen of them on this job had a way of speaking up — but she ignored them, the way she ignored most things that weren't evidence."
4"She watched him register it the way she had the moment her beam first crossed the platform — the dark pool spreading from beneath the man's torso, soaking into the grout."
5"The air around him was wrong, too — cooler than the rest of the platform, a pocket of chill she could feel through the latex."
6"She drew it out below the line of Rennick's sight — a compass, its casing green with verdigris, its face crowded with etched marks she'd paid more than money for and never regretted."
7"Somewhere ahead, faint as a held breath, she thought she could hear it — the murmur of a crowd that wasn't there, a market that wasn't there, a door she couldn't see standing open just past the reach of the light."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount998
adjectiveStacks0
stackExamples(empty)
adverbCount17
adverbRatio0.017034068136272545
lyAdverbCount1
lyAdverbRatio0.001002004008016032
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences84
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences84
mean14.54
std11.52
cv0.793
sampleLengths
023
133
29
33
43
57
624
712
834
94
109
117
1210
1329
1418
157
1615
1717
1817
195
206
2114
223
2341
2417
252
2633
2712
281
2912
305
3129
325
331
3440
359
363
3722
385
393
4031
4111
425
437
4425
454
4617
4713
4825
496
77.38% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats5
diversityRatio0.5
totalSentences84
uniqueOpeners42
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount2
totalSentences62
matches
0"Then it stopped."
1"Somewhere ahead, faint as a"
ratio0.032
39.35% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount28
totalSentences62
matches
0"She ducked beneath the strip"
1"She didn't answer."
2"She never answered when she"
3"It read like traffic."
4"Her torch found the body"
5"He'd beaten her here, which"
6"She looked at the arm."
7"Her knees protested — forty-one"
8"She brought her torch close"
9"She'd learned to trust it."
10"She tilted her head"
11"She watched him register it"
12"She rolled him, gently, with"
13"His skin held a flush,"
14"She pressed the back of"
15"She straightened, sweeping the torch"
16"She didn't have a name"
17"Her voice had gone flat"
18"He frowned at her"
19"She didn't tell him."
ratio0.452
100.00% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount44
totalSentences62
matches
0"The smell hit Quinn before"
1"She ducked beneath the strip"
2"She didn't answer."
3"She never answered when she"
4"The abandoned station beneath Camden"
5"It read like traffic."
6"Quinn filed that away and"
7"The platform opened before her"
8"Her torch found the body"
9"The light made the blood"
10"He'd beaten her here, which"
11"She looked at the arm."
12"A fresh one in the"
13"Rennick gestured at the churned"
14"Her knees protested — forty-one"
15"She brought her torch close"
16"The word arrived before the"
17"She'd learned to trust it."
18"She tilted her head"
19"Rennick's smile thinned."
ratio0.71
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences62
matches(empty)
ratio0
0.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences32
technicalSentenceCount7
matches
0"She ducked beneath the strip of police tape and let her torch beam slide down the disused stairwell, past tiles the color of old teeth, past graffiti that had f…"
1"And yet the dust on these steps had been disturbed — not by one set of feet, but by dozens, a churn of overlapping prints that didn't read like a single intrude…"
2"Her torch found the body first — male, mid-thirties, sprawled across the lip where tile met track-bed, one arm flung out as though reaching for something past t…"
3"Around him, two scene-of-crime officers in paper suits worked under portable floods that threw everything into harsh relief."
4"Her knees protested — forty-one years and eighteen of them on this job had a way of speaking up — but she ignored them, the way she ignored most things that wer…"
5"She watched him register it the way she had the moment her beam first crossed the platform — the dark pool spreading from beneath the man's torso, soaking into …"
6"Somewhere ahead, faint as a held breath, she thought she could hear it — the murmur of a crowd that wasn't there, a market that wasn't there, a door she couldn'…"
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags12
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags5
fancyCount1
fancyTags
0"she murmured (murmur)"
dialogueSentences27
tagDensity0.185
leniency0.37
rawRatio0.2
effectiveRatio0.074
82.5527%