Run: 2026-05-29-01KSSK9G2JK3811R0VN4RS8Z53

Run Details

Duration:
43.7s
Cost:
$0.062970
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="4417" name="Tomás Herrera" aliases="Tommy, Tomás, Herrera" pronouns="he/him" species="Human" storyRole="Support"> <eyeColor>warm brown</eyeColor> <hair>short curly dark brown</hair> <height>5'10"</height> <age>29</age> <skinTone>olive skin</skinTone> <scar>scar running along his left forearm from a knife attack</scar> <medallion>Saint Christopher medallion around his neck</medallion> <birthplace>Seville, Spain</birthplace> <description>A former paramedic who provides off-the-books medical care for the clique.</description> <backstory>Born in Seville, Spain. He moved to London to work for the NHS but lost his license after administering unauthorized treatments to supernatural patients.</backstory> </character> <location id="854" name="The Raven's Nest" aliases="the Nest, Raven, Silas' bar" realm="Earth"> <signColor>distinctive green neon sign above the entrance</signColor> <secretRoom>hidden back room accessible through a bookshelf, used for clandestine meetings</secretRoom> <description>A dimly lit bar in Soho, London. The walls are covered with old maps and black-and-white photographs.</description> </location> <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> </codex> Write a fully fleshed out scene of at least 1000 words in the thriller genre. A detective is pursuing a suspect through rain-soaked city streets at night. The chase takes them from the street level down into an underground market. The detective must decide whether to follow the suspect into unfamiliar and potentially dangerous territory. 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 rain came at London sideways, hammering the pavement of Camden High Street until the gutters ran black. Detective Harlow Quinn ran through it, her boots slapping the wet concrete, the worn leather strap of her watch chafing against her wrist with every pump of her arm. Eighteen years on the job and she could still feel the old thrill of it—the hunt narrowing to a single point of light ahead. That point of light was a man in a dark jacket, weaving between shuttered market stalls forty meters out. She'd been tailing him for three days. Tomás Herrera. Former paramedic, struck off the NHS register, no fixed address that any database would admit to. He'd surfaced tonight at The Raven's Nest, that green-neon dive in Soho where the clientele looked at her like she was something they'd scraped off a shoe, and he'd bolted the moment he clocked her face in the mirror behind the bar. He moved like a man who'd run before. He moved like a man who knew where he was going. "Herrera!" Quinn shouted, knowing it was useless. The rain swallowed the word. He cut left into an alley, and she followed, her shoulder clipping a wheelie bin and sending it crashing. Water sluiced from a broken drainpipe and soaked her to the collar. Ahead, Herrera vaulted a low railing and dropped out of sight. Quinn reached the railing and stopped. Below her, half-hidden behind a curtain of sodden ivy, was the mouth of an old Tube station—one of the dead ones, the ones the maps didn't bother with anymore. Boards had been pried away from the entrance and left to rot. A breath of warm, strange air drifted up from the dark, carrying a smell she couldn't name: something between cinnamon and cold iron and the inside of a closed church. She caught a glimpse of Herrera's back vanishing down a stairwell that should have led nowhere. Quinn keyed her radio. "This is DI Quinn, in pursuit, foot, suspect entering the disused station off Camden High Street. Requesting—" Static answered her. Not the ordinary crackle of a dead spot. This was a wet, breathing hiss, almost like something was listening on the other end. The hair rose on the back of her neck. She tried again. Nothing. She looked at the handset as though it had betrayed her, then shoved it back into her coat. For three years she'd been chasing the edges of something she couldn't name. Ever since the night Morris died. DS Daniel Morris, her partner of nine years, found in a locked room with no marks on him and an expression on his face she still saw when she closed her eyes—a man who had looked at something the human eye wasn't built to hold. The inquest had said cardiac event. The inquest hadn't been there. She had. And she'd spent every day since pulling at the threads, and every thread led to people like Herrera, to places like the green-neon bar, to doors that opened onto dark she couldn't explain. This was a door. She stood at the railing with the rain running cold down her spine and did the arithmetic any sane officer would do. No backup. No radio. No idea what waited at the bottom of those stairs. Procedure said wait. Procedure said cordon the exit, call it in through a working line, let the cavalry arrive. Procedure had kept her alive for eighteen years. Procedure had also let Morris's killer walk free into the dark, untouched, unnamed. Quinn swung her leg over the railing. The stairwell was tighter than it had any right to be, the tiles slick and furred with something that wasn't quite moss. Her torch beam swam over graffiti that hurt to look at directly—symbols, not words, that seemed to shift when she wasn't staring straight at them. The warm air thickened as she descended. The roar of the rain faded above her until there was only the sound of her own breath and the distant, rhythmic drip of water finding its level. Then, around a final turn, light. She stopped dead. The old platform had been transformed. Lanterns hung from the curved ceiling, but their flames burned in colors no flame should—violet, a sick green, a deep arterial red. Stalls crowded the platform edge, draped in fabrics that seemed to drink the light. Figures moved among them, hooded, hunched, some too tall, some moving wrong, their joints describing angles that made Quinn's stomach clench. A woman with eyes like polished river stones was weighing what looked like teeth on a brass scale. A man in a butcher's apron sold jars in which things turned slowly, watching. The smell of cinnamon and iron was overpowering now. Somewhere, a stringed instrument played a melody that doubled back on itself. The Veil Market. She'd heard the name whispered by an informant before he'd gone permanently silent. She had told herself it was a legend, the way she'd told herself a lot of things. A heavy hand fell on her shoulder. "Token." The voice belonged to a vast figure in the shadow of the archway—broad as a doorway, face lost beneath a hood, one pale hand extended palm-up. In that palm sat a small disc of yellowed bone, carved with a single eye. "Token," it said again, "or you don't pass. Living folk don't wander in here by accident, friend. And you reek of accident." Quinn's hand drifted to her hip, to the comforting weight that wasn't there—she'd left the firearm in the locker, because she was a detective, not an armed response officer, and God, the irony of that nearly made her laugh. Forty meters across the platform, she saw Herrera. He'd stopped at a stall draped in white, and he was looking back at her, his expression not triumphant but afraid. Afraid for her. He shook his head once, slow, a clear warning: *Don't.* The thing's pale hand tightened on her shoulder. "Last time of asking." Eighteen years of decorated service. A partner in the ground with the wrong words carved on his stone. A door at the bottom of the dark, finally open. Quinn reached into her coat, past the dead radio, to the inside pocket where, two days ago, she'd lifted a small bone disc from a dead man's effects without entering it into evidence—because some instinct older than procedure had told her she would need it. She held it up. The carved eye seemed to blink. "There," she said, her voice steadier than she felt. "Now let go of me." The hand released her. The hood inclined. "Welcome to the Market," it said, "Detective." She hadn't told it her name. Quinn stepped onto the platform, and behind her, the stairwell sealed itself with a sound like a held breath finally let go.
created_at"2026-05-29T10:08:17.5Z" 5/29/2026, 10:08:17 AM
model"anthropic/claude-4.8-opus-20260528"
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external_user(null)
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cancelledfalse
latency3912
moderation_latency(null)
generation_time43688
tokens_prompt914
tokens_completion1725
native_tokens_prompt1264
native_tokens_completion2266
native_tokens_completion_images(null)
native_tokens_reasoning49
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"
usage0.06297
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provider_responses
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is_byokfalse
latency2424
model_permaslug"anthropic/claude-4.8-opus-20260528"
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Evaluation details

Result Evaluator Details Meta Data
0.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags4
adverbTagCount1
adverbTags
0"it said again [again]"
dialogueSentences8
tagDensity0.5
leniency1
rawRatio0.25
effectiveRatio0.25
95.65% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1149
totalAiIsmAdverbs1
found
0
adverb"slowly"
count1
highlights
0"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)
73.89% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1149
totalAiIsms6
found
0
word"database"
count1
1
word"down her spine"
count1
2
word"rhythmic"
count1
3
word"stomach"
count1
4
word"comforting"
count1
5
word"weight"
count1
highlights
0"database"
1"down her spine"
2"rhythmic"
3"stomach"
4"comforting"
5"weight"
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
narrationSentences84
matches(empty)
74.83% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount3
narrationSentences84
filterMatches
0"watch"
hedgeMatches
0"seemed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences88
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen46
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans1
markdownWords1
totalWords1141
ratio0.001
matches
0"Don't."
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
totalMentions34
wordCount1088
uniqueNames17
maxNameDensity0.83
worstName"Quinn"
maxWindowNameDensity2
worstWindowName"Procedure"
discoveredNames
London1
Camden1
High1
Street1
Harlow1
Quinn9
Herrera5
Raven1
Nest1
Soho1
Tube1
Morris3
Daniel1
Veil1
Market1
God1
Procedure4
persons
0"Harlow"
1"Quinn"
2"Herrera"
3"Morris"
4"Daniel"
5"Market"
6"Procedure"
places
0"London"
1"Camden"
2"High"
3"Street"
4"Raven"
5"Soho"
globalScore1
windowScore1
0.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences63
glossingSentenceCount5
matches
0"something between cinnamon and cold iron and th"
1"quite moss"
2"words, that seemed to shift when she wasn't staring straight at them"
3"fabrics that seemed to drink the light"
4"looked like teeth on a brass scale"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.876
wordCount1141
matches
0"not triumphant but afraid"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences88
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs35
mean32.6
std30.61
cv0.939
sampleLengths
071
119
286
312
442
56
671
716
821
957
10110
114
1263
1313
147
1582
166
173
1895
1921
2033
217
221
2341
2422
2581
2612
2728
2845
2910
3014
317
327
336
3422
96.91% Passive voice overuse
Target: ≤2% passive sentences
passiveCount2
totalSentences84
matches
0"been pried"
1"been transformed"
21.75% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount5
totalVerbs187
matches
0"was going"
1"was listening"
2"wasn't staring"
3"was weighing"
4"was looking"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount8
semicolonCount0
flaggedSentences8
totalSentences88
ratio0.091
matches
0"Eighteen years on the job and she could still feel the old thrill of it—the hunt narrowing to a single point of light ahead."
1"Below her, half-hidden behind a curtain of sodden ivy, was the mouth of an old Tube station—one of the dead ones, the ones the maps didn't bother with anymore."
2"DS Daniel Morris, her partner of nine years, found in a locked room with no marks on him and an expression on his face she still saw when she closed her eyes—a man who had looked at something the human eye wasn't built to hold."
3"Her torch beam swam over graffiti that hurt to look at directly—symbols, not words, that seemed to shift when she wasn't staring straight at them."
4"Lanterns hung from the curved ceiling, but their flames burned in colors no flame should—violet, a sick green, a deep arterial red."
5"The voice belonged to a vast figure in the shadow of the archway—broad as a doorway, face lost beneath a hood, one pale hand extended palm-up."
6"Quinn's hand drifted to her hip, to the comforting weight that wasn't there—she'd left the firearm in the locker, because she was a detective, not an armed response officer, and God, the irony of that nearly made her laugh."
7"Quinn reached into her coat, past the dead radio, to the inside pocket where, two days ago, she'd lifted a small bone disc from a dead man's effects without entering it into evidence—because some instinct older than procedure had told her she would need it."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1100
adjectiveStacks0
stackExamples(empty)
adverbCount32
adverbRatio0.02909090909090909
lyAdverbCount7
lyAdverbRatio0.006363636363636364
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences88
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences88
mean12.97
std10.16
cv0.783
sampleLengths
018
129
224
319
47
52
616
742
88
911
107
115
1219
1312
1411
156
1629
1712
1830
1916
204
2117
223
238
2415
259
263
271
2818
2913
306
3145
326
335
342
3533
364
3722
382
392
4010
413
4216
438
4413
457
4622
4725
487
4928
59.09% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats13
diversityRatio0.4431818181818182
totalSentences88
uniqueOpeners39
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount3
totalSentences78
matches
0"Ever since the night Morris"
1"Then, around a final turn,"
2"Somewhere, a stringed instrument played"
ratio0.038
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount19
totalSentences78
matches
0"She'd been tailing him for"
1"He'd surfaced tonight at The"
2"He moved like a man"
3"He moved like a man"
4"He cut left into an"
5"She caught a glimpse of"
6"She tried again."
7"She looked at the handset"
8"She stood at the railing"
9"Her torch beam swam over"
10"She stopped dead."
11"She'd heard the name whispered"
12"She had told herself it"
13"it said again"
14"He'd stopped at a stall"
15"He shook his head once,"
16"She held it up."
17"she said, her voice steadier"
18"She hadn't told it her"
ratio0.244
56.15% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount63
totalSentences78
matches
0"The rain came at London"
1"Detective Harlow Quinn ran through"
2"That point of light was"
3"She'd been tailing him for"
4"He'd surfaced tonight at The"
5"He moved like a man"
6"He moved like a man"
7"Quinn shouted, knowing it was"
8"The rain swallowed the word."
9"He cut left into an"
10"Water sluiced from a broken"
11"Quinn reached the railing and"
12"Boards had been pried away"
13"A breath of warm, strange"
14"She caught a glimpse of"
15"Quinn keyed her radio."
16"Static answered her."
17"This was a wet, breathing"
18"The hair rose on the"
19"She tried again."
ratio0.808
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences78
matches(empty)
ratio0
43.19% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences43
technicalSentenceCount6
matches
0"Detective Harlow Quinn ran through it, her boots slapping the wet concrete, the worn leather strap of her watch chafing against her wrist with every pump of her…"
1"He cut left into an alley, and she followed, her shoulder clipping a wheelie bin and sending it crashing."
2"She caught a glimpse of Herrera's back vanishing down a stairwell that should have led nowhere."
3"And she'd spent every day since pulling at the threads, and every thread led to people like Herrera, to places like the green-neon bar, to doors that opened ont…"
4"Figures moved among them, hooded, hunched, some too tall, some moving wrong, their joints describing angles that made Quinn's stomach clench."
5"Quinn's hand drifted to her hip, to the comforting weight that wasn't there—she'd left the firearm in the locker, because she was a detective, not an armed resp…"
0.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags4
uselessAdditionCount1
matches
0"she said, her voice steadier than she felt"
25.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags4
fancyCount1
fancyTags
0"Quinn shouted (shout)"
dialogueSentences8
tagDensity0.5
leniency1
rawRatio0.25
effectiveRatio0.25
71.5486%