Run: 2026-02-17-01KHMR4SKQE46GX06A7PARV4ND

Run Details

Duration:
1m 14s
Cost:
$0.072140
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 down in sheets, turning Soho into a slick mirror of neon and brake lights. Harlow Quinn ran. She ran with the economy of someone who had done this a hundred times—arms pumping close to her body, boots striking the pavement in a steady metronome, her breathing controlled despite the burn climbing through her legs. Ahead of her, maybe forty meters and pulling away, Tomás Herrera dodged between a cluster of tourists huddled under a pub awning and cut hard left onto Frith Street. She'd clocked him twenty minutes ago through the rain-streaked window of The Raven's Nest, sitting at the far end of the bar beneath those ridiculous old maps Silas pinned to every surface. He'd been leaning close to a woman Quinn didn't recognize, passing something small between their hands—a transaction that ended the moment his warm brown eyes drifted past the woman's shoulder and found Quinn standing on the pavement outside, the green neon sign painting her face in sickly light. He'd bolted. Not through the front door but through the back, and by the time Quinn shouldered past the bartender and made it through the narrow corridor behind the bar—past a bookshelf that stood oddly ajar, revealing a room beyond it she filed away for later—Herrera was already thirty seconds gone out the service exit and running north. Now the gap between them was growing. He was younger by twelve years and fast, his slight frame slipping through gaps in the Saturday night foot traffic that Quinn had to shoulder through. Her warrant card was in her pocket but there was no time to flash it, no time to shout the words that might make people step aside. She was off the books tonight. No backup. No radio. Just a worn leather watch ticking against her left wrist and an instinct she'd been sharpening for eighteen years that told her Herrera was the thread she needed to pull. He banked right onto Old Compton Street, and for a moment she lost him in the crowd spilling out of a theatre. She slowed, scanning. Rain dripped from her close-cropped hair into her eyes and she swiped it away with the back of her hand. There—the olive skin, the dark curls plastered to his forehead, the glint of something gold at his neck. His Saint Christopher medallion catching the light from a kebab shop. He was across the street, checking over his shoulder, and when he saw her seeing him his expression didn't harden with defiance or crumble with fear. It was something else. Something almost like apology. Then he dropped down a stairwell she hadn't noticed and vanished below the street. Quinn crossed the road in four strides, a black cab blaring its horn as it swerved around her. She reached the stairwell and stopped at the top. Metal steps descended into a service entrance—or what had once been one. The door at the bottom was industrial steel, heavy, scarred with rust, and it was swinging shut on its hinges with a low groan. She took the steps two at a time and caught the door before it closed. Beyond it, a corridor stretched into the dark, tiled walls glistening with condensation. Old tube signage. Camden Town—except that wasn't right, she was in Soho, miles from Camden. The geography didn't scan. The air that breathed up from the corridor didn't scan either: it smelled of cinnamon and iron and something electrical, like ozone before a lightning strike. Quinn stood in the threshold with one hand on the door and the other resting on her hip where her baton sat clipped to her belt. She could feel the border of things here. The line between the city she understood—its statutes and procedures, its chain of evidence, its courtrooms and custody suites—and something else. Something that had been circling the edge of her awareness for three years, ever since Morris had walked into a building in Deptford and never walked out. They'd found his radio. They'd found his warrant card. They'd never found Morris. The corridor ahead of her flickered. Not the lights—the space itself seemed to pulse, as if the walls were breathing. From deep within she could hear the murmur of voices, dozens of them, layered over a low ambient hum that reminded her of a generator running underground. She thought about procedure. She thought about calling it in, filing the report, running Herrera's name through the system and waiting for the machinery of the law to turn. She thought about how long she'd been waiting already—three years of dead ends and cold leads and incident reports that dissolved into nothing whenever they brushed up against whatever this was. Harlow Quinn was not a woman who believed in the supernatural. She was a woman who believed in evidence, in witness statements, in the patient accumulation of fact. But she was also honest enough with herself to admit that the facts had been pointing somewhere she didn't want to look. Every case connected to the clique dead-ended in the same way: witnesses who couldn't remember, CCTV footage corrupted, forensic evidence that contradicted itself. Something was wrong with the geometry of it all, and the wrongness always led down. Underground. Below. She stepped through the door. The corridor ran for perhaps fifty meters before it opened into a space that stopped her in her tracks. The abandoned station was vast—a cathedral of crumbling tile and ironwork, its arched ceiling lost in shadow. But someone had filled it. Stalls and booths lined the platforms on both sides, constructed from salvaged wood and draped fabric and what looked like old shipping containers cut open and repurposed. Lanterns hung from cables strung between the support columns, casting warm pools of amber light that turned the whole space into something out of a fever dream. Hundreds of people moved between the stalls, browsing, haggling, exchanging things Quinn couldn't identify from this distance. The murmur she'd heard from the corridor was the sound of commerce—conversation and negotiation and the clink of objects changing hands. The Veil Market. She'd heard whispers of it in informant debriefs, half-references that evaporated when pressed. A black market that moved locations every full moon, accessible only to those who carried a bone token. She didn't have a token. She'd walked in on Herrera's passage, riding his wake through whatever mechanism controlled access, and she had the crawling sensation that the door behind her might not open from this side. She didn't look back. Looking back was for people who hadn't already made their decision. The market swallowed her. She moved along the edge of the platform, keeping close to the tiled wall, letting the crowd flow past without engaging. The stalls sold things she catalogued with professional detachment: glass vials of iridescent liquid ranked by color, bundles of dried herbs that hummed faintly when she passed, books bound in leather that was too supple and too pale to have come from any animal she wanted to think about. One stall displayed rows of small bones arranged in geometric patterns on black velvet. Another was just a woman sitting behind a table with a silver bowl of water, whispering to a queue of customers who leaned in with desperate, hungry expressions. Nobody stopped her. Nobody asked for a token. But Quinn could feel attention shifting toward her in peripheral glances and quickly averted eyes—the way a crowd notices a predator moving through tall grass. She didn't belong here, and they knew it. She spotted Herrera. He was thirty meters ahead, standing at a stall near the far end of the platform, speaking rapidly in Spanish to a heavyset man in a canvas apron. The man was wrapping something in cloth—a package the size of a hardback book. Herrera's hands were shaking. Not from the cold. Quinn had seen enough fear in enough people to know what it looked like in the small muscles of the hands. She closed the distance to twenty meters. Fifteen. The crowd thinned near Herrera's position, as if the other market-goers were giving this particular transaction a wide berth. The man in the apron finished wrapping the package and held it close to his chest, waiting. Herrera reached into his jacket and produced something that caught the lantern light—a token, bone-white and roughly circular, with markings etched into its surface. He set it on the counter. The man examined it, nodded, and slid the package across. Quinn was ten meters out when Herrera turned and saw her. The apology was still in his face, but it had curdled into something more complicated. He clutched the package against his ribs with both hands, and she could see the scar running along his left forearm where his sleeve had ridden up—a pale ridge of tissue from wrist to elbow that she knew from his file had come from a knife attack two years ago. The Saint Christopher medallion had escaped his collar and hung against his chest, tarnished gold swinging gently. "You shouldn't be here, Detective." His accent was soft, mostly gone after years in London, but the stress brought Seville back into his vowels. "Neither should you, Tomás." She stopped five meters from him. Close enough to read his expression. Far enough that he couldn't bolt past her without committing to a direction. "What's in the package?" "Something that keeps people alive." "Banned substances. Alchemical compounds. That's what they're calling it?" His jaw tightened. "You don't know what you're talking about." "Then educate me." She kept her voice level, conversational, the same tone she used in interview rooms when she wanted a suspect to forget the tape was running. "Tell me what's so important that a man with paramedic training throws away his NHS license, goes underground, and starts running when a police detective shows up at his local." "I didn't run because you're police." The words came out ragged, torn at the edges. "I ran because being seen with you here could get us both killed." Quinn felt the attention around them sharpen. The ambient noise of the market hadn't changed, but something in its texture had shifted—fewer voices near them, more silence. She became aware of figures watching from the shadows between stalls, still as sentinels. "Then let's walk and talk," she said. "Get me out of here. Explain it on the way." Herrera stared at her for a long moment. Rain still dripped from his curls, though they were underground and it hadn't been raining when he'd entered the market. She didn't examine that thought too closely. "You followed me through the door," he said quietly. "Without a token." "I did." "Do you understand what that means?" "It means I'm resourceful." "It means the Market let you in." His voice dropped to barely a whisper. "And the Market doesn't do anything for free." The lanterns above them flickered in unison, a single coordinated pulse that rolled through the entire space like a heartbeat. When they steadied, the light was slightly warmer, slightly closer, as if the Market itself had leaned in to listen. Quinn's hand moved to her baton without conscious thought. Her sharp jaw was set, her brown eyes steady, and if the part of her brain responsible for self-preservation was screaming, it was screaming behind glass she'd installed a long time ago. "Then I'll settle the bill later," she said. "Right now, you and I are going to have a conversation." Herrera looked at her the way people looked at someone walking onto thin ice—not with contempt but with the bleak certainty that the cracking had already begun. He tucked the package inside his jacket, zipped it shut, and nodded. "Follow me," he said. "And whatever you do, don't stop walking." They moved together into the amber depths of the Market, two figures cutting against the current of the crowd, and the shadows between the stalls watched them go with the patient interest of something that had been waiting a very long time.
created_at"2026-02-17T02:52:34.21125+00:00" 2/17/2026, 2:52:34 AM
model"anthropic/claude-4.6-opus-20260205"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1756
moderation_latency(null)
generation_time74208
tokens_prompt914
tokens_completion3058
native_tokens_prompt918
native_tokens_completion2702
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"
usage0.07214
router(null)
provider_responses
0
id"msg_017TA3aqikU2Mxx5hUWe4vyE"
status200
is_byokfalse
latency1744
endpoint_id"c926c048-563e-44b0-8434-95965bee924c"
provider_name"Anthropic"
model_permaslug"anthropic/claude-4.6-opus-20260205"
api_type"completions"
id"gen-1771296679-YQNNZOVU5vZ4zcrMYpZg"
upstream_id"msg_017TA3aqikU2Mxx5hUWe4vyE"
total_cost0.07214
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"

Evaluation details

Result Evaluator Details Meta Data
50.0000% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags4
adverbTagCount1
adverbTags
0"he said quietly [quietly]"
75.3573% AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount2029
totalAiIsmAdverbs5
found
0
adverb"gently"
count1
1
adverb"quickly"
count1
2
adverb"slightly"
count2
3
adverb"very"
count1
highlights
0"gently"
1"quickly"
2"slightly"
3"very"
100.0000% AI-ism character names
Target: 0 AI-default names (17 tracked, −20% each)
codexExemptions(empty)
found(empty)
100.0000% AI-ism location names
Target: 0 AI-default location names (33 tracked, −20% each)
codexExemptions(empty)
found(empty)
65.5002% AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount2029
totalAiIsms7
found
0
word"sentinels"
count1
1
word"flickered"
count2
2
word"glistening"
count1
3
word"glint"
count1
4
word"velvet"
count1
5
word"etched"
count1
highlights
0"sentinels"
1"flickered"
2"glistening"
3"glint"
4"velvet"
5"etched"
100.0000% Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches0
maxInWindow0
found(empty)
highlights(empty)
100.0000% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences120
matches(empty)
100.0000% Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount1
hedgeCount1
narrationSentences120
filterMatches
0"watch"
hedgeMatches
0"seemed to"
100.0000% Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount2
totalSentences134
matches
0"admit that the"
1"examine that thought"
100.0000% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs49
mean40.88
std32.58
cv0.797
sampleLengths
020
166
280
358
4100
5108
614
763
873
982
1013
1147
1260
1390
145
1519
16114
1770
1815
19116
2041
213
2271
2374
2410
2511
2682
2724
2833
295
309
3110
3258
3328
3441
3517
3635
3712
382
396
404
4122
4240
4341
4419
4527
4612
4711
4842
100.0000% Passive voice overuse
Target: ≤5% passive sentences
passiveCount0
totalSentences120
matches(empty)
100.0000% Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount8
totalVerbs314
matches
0"was swinging"
1"were breathing"
2"was wrapping"
3"were shaking"
4"were giving"
5"was running"
6"was screaming, was screaming"
100.0000% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1866
adjectiveStacks0
stackExamples(empty)
adverbCount48
adverbRatio0.02572347266881029
lyAdverbCount14
lyAdverbRatio0.007502679528403001
100.0000% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences134
echoCount0
echoWords(empty)
100.0000% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences134
mean14.95
std11.25
cv0.752
sampleLengths
017
13
237
329
432
548
62
756
87
926
1027
116
122
132
1430
1522
163
1720
1818
1911
2026
214
224
2314
2418
259
2612
2724
2815
2913
303
3112
324
3326
3426
358
3621
3727
384
395
404
416
4214
4327
444
4525
4631
4711
4817
4922
52.7363% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats16
diversityRatio0.3880597014925373
totalSentences134
uniqueOpeners52
100.0000% Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags4
fancyCount1
fancyTags
0"he said quietly (say quietly)"
90.7996%