Run: 2026-02-17-01KHMN09EXG1VWZ5WJKXZDH2SE

Run Details

Duration:
46.5s
Cost:
$0.035706
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 hammered London's streets with merciless persistence, transforming Soho into a glistening maze of reflections. Detective Harlow Quinn's boots splashed through puddles as she sprinted after the hooded figure who'd bolted from The Raven's Nest moments earlier. Her breath came in controlled bursts, the discipline of two decades on the force keeping her pace steady even as her quarry darted between late-night revelers. "Police! Stop!" she shouted, knowing it was futile. The suspect—male, approximately six feet, athletic build—had been seated at the bar's corner when Quinn entered. His immediate flight when she'd flashed her warrant card confirmed her suspicions. Three weeks of surveillance on The Raven's Nest had finally yielded movement. Quinn sidestepped a startled couple, her focus locked on the suspect's dark silhouette now turning sharply down an alley. Her worn leather watch slapped against her wrist as she accelerated. The timepiece had been with her longer than most relationships—a gift from DS Morris before he'd vanished during that warehouse raid three years ago. The alley narrowed, brick walls pressing in from both sides. The suspect vaulted over a chain-link fence with practiced ease. Quinn followed, her body remembering the motions from academy training despite the protests of her forty-one-year-old knees. She landed with military precision, barely breaking stride. "You're just making this worse for yourself," she called out, her voice steady despite the exertion. Ahead, the suspect knocked over a stack of wooden pallets. Quinn hurdled them, the gap between them narrowing. She was gaining. The chase led them deeper into a labyrinth of service roads and loading bays behind Camden's main thoroughfares, away from the neon-lit streets into the city's shadowy arteries. The rain intensified, plastering Quinn's salt-and-pepper hair to her scalp. Water trickled down her neck, but she registered the discomfort only distantly. What mattered was the figure ahead—the same figure who'd been photographed meeting with three different victims before they'd turned up dead, their bodies drained of blood in ways the medical examiner couldn't explain. The suspect darted down a set of crumbling stone steps that Quinn hadn't noticed until she was nearly upon them. They descended steeply into darkness, disappearing beneath street level. The entrance to an abandoned Tube station, its existence scrubbed from most modern maps. Quinn slowed, drawing her service weapon and flashlight. The beam cut through the darkness, illuminating graffiti-covered walls and debris-strewn steps. Her instincts screamed caution, but the suspect was still in view, his footsteps echoing from below. Protocol dictated waiting for backup before entering an unknown subterranean space. But backup meant explanations, and Quinn had precious few that wouldn't sound delusional. How could she explain that the victims' blood hadn't been spilled—it had simply vanished from their bodies? Or that each crime scene had contained traces of a substance forensics couldn't identify? Decision made, Quinn descended, keeping her back to the wall. The staircase spiraled deeper than expected, the air growing noticeably warmer and heavy with unfamiliar scents—incense, exotic spices, and something acrid that burned her nostrils. The staircase emptied into what had once been a platform. Quinn froze at the threshold, momentarily stunned by the transformation. What should have been an abandoned space had become a bustling marketplace. Stalls lined both sides of the platform, illuminated by mismatched lanterns and strings of lights. Vendors called out in languages Quinn recognized and others she didn't. The crowd itself was... wrong. Quinn's brain struggled to process figures moving beneath hoods and cloaks that concealed too little or too much. A woman with skin like polished obsidian haggled with a hunched figure whose hands bore too many joints. A man with gill-like slits on his neck examined a vial of luminescent liquid. Quinn instinctively retreated into the shadows of the stairwell, holstering her weapon. Drawing attention here seemed unwise. Her suspect was moving purposefully through the crowd toward the far end of the platform. She needed to follow, but stepping into that throng meant exposing herself in an environment where she was clearly the outsider. "First time at the Veil Market, Detective?" Quinn spun, weapon halfway drawn before she registered the voice. Leaning against the wall behind her was a man with warm brown eyes and a Saint Christopher medallion glinting at his throat. "Tomás Herrera," Quinn said, recognition clicking into place from her case files. "You're the ex-paramedic who works with the Raven's Nest crowd." Herrera's expression revealed nothing, but his eyes flicked briefly to her holstered weapon. "Your reputation precedes you, Detective Quinn," he said, his Spanish accent subtle but present. "Most police avoid this place. The ones who stumble in by accident rarely leave with their sanity intact." "I'm pursuing a suspect in multiple homicides," Quinn said, gesturing toward the market where her quarry was disappearing into the crowd. "I don't have time for cryptic warnings." "The man you're chasing is headed to see the Bone Merchant," Herrera said. "You won't reach him without a token, and even if you could, you wouldn't survive the encounter without protection." Quinn studied Herrera, noting the scar running along his left forearm—reportedly from protecting a victim during a knife attack that had ultimately cost him his medical license. His file listed him as a person of interest, not a confirmed criminal. Someone who operated in gray areas but wasn't known for violence. "Why are you helping me?" she asked. "I'm not," Herrera said. "I'm preventing a bloodbath. The Market moves locations every full moon. Tonight's the last night at this station. The security is... less tolerant of intrusions." Beyond them, the suspect had reached a makeshift gate fashioned from what appeared to be actual human ribcages. He presented something to the monstrous figure guarding it—a small white token. "I need to get through there," Quinn said. "You need a bone token," Herrera replied. "And I happen to have a spare." He produced a small ivory-colored disk from his pocket, rolling it between his fingers. "But I want something in exchange." "I don't negotiate with—" "With what, Detective? Criminals? Witnesses? People trying to keep the peace between worlds you don't understand?" Quinn's jaw tightened. Her suspect would disappear any moment. "What do you want?" "The file you have on me. I want it expunged." "I can't just delete official records." "Not all of it. Just the supernatural connections you've been documenting. The ones your superiors would dismiss as fantasy." His expression softened slightly. "I help people, Detective. People the NHS won't or can't treat." Quinn glanced toward the gate where her suspect was now passing through. Decision time. "Fine," she said. "But you're coming with me." Surprise flickered across Herrera's face. "That wasn't our agreement." "New terms. I need a guide, and you need insurance that I'll keep my word." She stepped closer, her voice dropping. "And maybe you can explain what happened to my partner three years ago." Herrera's eyes widened fractionally. "What makes you think I know anything about DS Morris?" "Because the last person to see him alive was receiving treatment from you for an 'unusual condition.' His disappearance file mentions a witness matching your description." Rain water dripped from Quinn's jacket onto the concrete between them. The distant sounds of the market seemed to fade as they assessed each other. Finally, Herrera nodded. "I'll take you through. But understand this—down here, your badge means nothing. Your gun means less than nothing. Some things in the Veil Market see human weapons as insults rather than threats." He pressed the bone token into her palm. It was unnervingly warm to the touch, like it had been carried close to a body—or was somehow still part of one. "Follow my lead. Speak only when spoken to. Don't stare at anyone or anything for too long. If I say run, you run—no questions." Quinn closed her fingers around the token, its edges digging into her palm. "Let's go." Herrera led her into the market, weaving expertly through the crowd. Quinn stayed close, hyper-aware of the strange gazes following their progress. Some vendors pulled covers over their merchandise as they passed. Others called out to Herrera in languages that made Quinn's ears ache. As they approached the bone gate, Quinn caught glimpses of wares that defied explanation—bottles containing miniature thunderstorms, jewelry that shifted and moved when not directly observed, weapons that seemed partially transparent. The gate guardian turned as they approached—a hulking figure whose features seemed to ripple and shift beneath a cowl. Quinn forced herself to breathe evenly, focusing on the familiar weight of her watch against her wrist rather than the impossible creature before her. Herrera spoke softly to the guardian while Quinn presented her token. The ivory disk grew painfully hot in her palm before crumbling to dust. The guardian stepped aside. Beyond the threshold lay another world entirely—one that might provide answers to the unexplainable deaths haunting London's streets, and perhaps to the fate of her partner. But as Quinn stepped through, she knew with absolute certainty that she was crossing a line from which her life could never fully return.
created_at"2026-02-17T01:57:13.274824+00:00" 2/17/2026, 1:57:13 AM
model"anthropic/claude-3-7-sonnet-20250219"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency423
moderation_latency(null)
generation_time45967
tokens_prompt914
tokens_completion2505
native_tokens_prompt917
native_tokens_completion2197
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"
usage0.035706
router(null)
provider_responses
0
id"msg_01P4Y7ZVTLBbmdvfrGMdbfoZ"
status200
is_byokfalse
latency423
endpoint_id"1347c8dc-12f5-47df-8355-3ec7e80a8c67"
provider_name"Anthropic"
model_permaslug"anthropic/claude-3-7-sonnet-20250219"
api_type"completions"
id"gen-1771293386-B9mOg78N3GqhRgC3DPea"
upstream_id"msg_01P4Y7ZVTLBbmdvfrGMdbfoZ"
total_cost0.035706
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags12
adverbTagCount0
adverbTags(empty)
80.3922% AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount1530
totalAiIsmAdverbs3
found
0
adverb"sharply"
count1
1
adverb"slightly"
count1
2
adverb"softly"
count1
highlights
0"sharply"
1"slightly"
2"softly"
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)
54.2484% AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount1530
totalAiIsms7
found
0
word"flickered"
count1
1
word"flicked"
count1
2
word"glistening"
count1
3
word"glinting"
count1
4
word"weight"
count1
5
word"footsteps"
count1
6
word"echoing"
count1
highlights
0"flickered"
1"flicked"
2"glistening"
3"glinting"
4"weight"
5"footsteps"
6"echoing"
100.0000% Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches1
maxInWindow1
found
0
label"eyes widened/narrowed"
count1
highlights
0"eyes widened"
100.0000% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences92
matches(empty)
100.0000% Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount2
hedgeCount3
narrationSentences92
filterMatches
0"watch"
hedgeMatches
0"appeared to"
1"seemed to"
100.0000% Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount2
totalSentences114
matches
0"steps that Quinn"
1"explain that the"
100.0000% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs51
mean29.49
std16.52
cv0.56
sampleLengths
064
18
240
354
445
516
649
755
843
936
1055
1135
1258
1355
1453
157
1632
1722
1813
1932
2028
2132
2251
237
2429
2530
268
2714
2820
294
3016
3113
3210
336
3434
3514
368
379
3834
3914
4026
4125
4235
4330
4424
4515
4644
4731
4843
4928
100.0000% Passive voice overuse
Target: ≤5% passive sentences
passiveCount4
totalSentences92
matches
0"been seated"
1"been photographed"
2"been spilled"
3"been carried"
100.0000% Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount3
totalVerbs213
matches
0"was gaining"
1"was disappearing"
2"was crossing"
84.0818% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1174
adjectiveStacks2
stackExamples
0"illuminating graffiti-covered walls"
1"small ivory-colored disk"
adverbCount41
adverbRatio0.03492333901192504
lyAdverbCount29
lyAdverbRatio0.024701873935264053
100.0000% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences114
echoCount0
echoWords(empty)
100.0000% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences114
mean13.19
std7.17
cv0.543
sampleLengths
016
122
226
38
416
512
612
719
811
924
1010
1110
1217
138
1416
1510
168
173
1828
1910
2012
2133
2220
239
2414
258
2612
2716
2811
2913
3017
3114
3210
3325
3410
3510
3612
3715
3811
394
401
4118
4218
4314
4412
455
4615
4721
487
4910
66.0819% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats8
diversityRatio0.43859649122807015
totalSentences114
uniqueOpeners50
70.8333% Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags12
fancyCount5
fancyTags
0"shouted (shout)"
1"she called out, her voice steady despite the exertion (call out)"
2"explain (explain)"
3"Quinn said, recognition clicking into place from her case files (say, click place)"
4"Quinn said, gesturing toward the market where her quarry was disappearing into the crowd (say, gesture disappear)"
91.5081%