Run: 2026-02-17-01KHMR4FWRAZ4V0R8N2R80N5E5

Run Details

Duration:
1m 8s
Cost:
$0.066665
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 bone token felt like a dead tooth in Quinn's palm. She'd pulled it off a suspect two weeks ago—a rattled teenager who'd swallowed his own tongue trying not to talk—and had kept it in her jacket pocket since, waiting for the right moment. Now she stood at the base of a service stairwell beneath Camden, listening to the hum of the Northern Line through eighteen inches of concrete, and she knew the moment had arrived. The call had come in at 4:17 a.m. An anonymous tip. Male voice, clipped, no accent worth noting. Body in the old station, the one that didn't appear on any current Transport for London map. Quinn hadn't asked how dispatch expected her to find a station that didn't exist. She'd simply driven to Camden and started walking. The token warmed against her skin as she descended. The stairs were original tile, cream and green, cracked in places where the grout had surrendered to decades of damp. Emergency lighting—not original, someone had wired it in—cast the steps in a sulfurous glow. At the bottom, a riveted iron door stood six inches ajar. Quinn pushed through it with her shoulder, one hand on the torch clipped to her belt, the other near the Glock at her hip. She didn't draw either. The space beyond didn't warrant it—not yet. The Veil Market was dead. Not closed—dead. Whatever thrumming commerce filled this place on its operating nights had been stripped away, leaving behind only the skeleton of the abandoned station. Platform edges lined with dust. A vaulted ceiling lost in shadow. The smell of old stone and something else, something that sat at the back of her throat like copper and burnt sage. Stalls remained. Or rather, the bones of stalls—wooden frames, a few draped with dark cloth, one overturned table with its legs pointing upward like a capsized animal. The market had moved on, as markets do, but someone had stayed behind. The body lay on the platform, twenty feet from the tunnel mouth. Quinn approached without hurrying. Eighteen years had taught her that the dead kept their appointments. The man was face-down, arms at his sides, positioned with a neatness that immediately bothered her. People didn't fall like that. People fell ugly—limbs akimbo, faces turned, the body's last argument with gravity written in the angles. This man lay straight as a plank, chin to the tile, fingers together, as if someone had arranged him for viewing. She crouched. Male, late fifties, heavy build. Grey overcoat, well-made. No visible wounds on the back of the head or neck. No blood pooling. She checked his hands without moving him—clean, no defensive marks, no broken nails. His left shoe had come untied, and the lace trailed in a perfect spiral, which was wrong in a way she couldn't articulate but filed away nonetheless. "Don't touch him." Quinn didn't startle. She looked up. Eva Kowalski stood at the far end of the platform, half-hidden by a support column, her worn leather satchel clutched against her chest like a shield. Her curly red hair was wilder than usual, as if she'd been pulling at it, and behind her round glasses her green eyes were wide and glassy with something that wasn't quite fear. It was closer to recognition. "Miss Kowalski." Quinn straightened slowly. "Interesting place to find a museum researcher at four in the morning." "I got the same call you did." "I very much doubt that." Eva stepped out from behind the column. She moved carefully, satchel bumping her hip, and Quinn noticed she was keeping to the edge of the platform, as far from the tunnel mouth as the architecture allowed. Her left hand came up and tucked a curl behind her ear—once, twice. A tell Quinn had catalogued on their first meeting three months ago. The girl was terrified but working hard not to show it. "I know what this place is," Eva said. "And I know this isn't a normal crime scene." "There's no such thing as a normal crime scene." Quinn pulled a pair of nitrile gloves from her coat pocket and snapped them on. "There are only crime scenes that have been properly processed and ones that haven't. Right now, you're standing in one that hasn't, which means you're contaminating it." "Detective, listen to me—" "Stay where you are. Don't move, don't touch anything, and when my forensics team arrives, you'll explain exactly how you knew to come here." "Your forensics team won't find anything." Quinn looked at her. Eva held her gaze, and there was something in it that Quinn recognized from the bathroom mirror—the haunted look of someone who'd seen something that had broken the world's logic and was still trying to glue the pieces back into a shape that made sense. She turned back to the body. Carefully, using both hands, she rolled the man onto his back. His face was unremarkable. Fiftyish, fleshy, clean-shaven. Eyes closed. No petechiae, no cyanosis, no foam at the lips. He looked, impossibly, like a man who had simply decided to lie down on a disused Tube platform and stop living. Quinn checked his throat—no ligature marks. She unbuttoned his overcoat and found a suit beneath, charcoal, no tie. She checked his inner pockets. Wallet. She flipped it open: Desmond Crewe. An address in Highgate. Three hundred pounds in cash, untouched. A membership card for a private club in Mayfair. No phone. "His phone's gone," Quinn murmured. "That's not the only thing that's gone." Quinn looked up again. Eva had crept closer—not to her, but to a point about six feet from the body, where she'd stopped and was staring at the platform floor. Her freckled face had gone the color of old parchment. "What are you looking at?" Eva pointed. Quinn followed the line of her finger and saw nothing. Dusty tile. A faint discoloration, maybe, like a water stain, vaguely circular. "There was a rift here," Eva said quietly. "Recently. Within the last few hours." "A rift." "A tear. A doorway, if you prefer. Between here and—somewhere else." Eva swallowed visibly. "That's why your forensics won't find cause of death. He wasn't killed. He was opened. Something came through him, used him as a threshold, and then left." Quinn stood. She crossed to where Eva pointed and crouched again, studying the floor. The discoloration was there—faint, perhaps two feet in diameter, and when she leaned close she caught that same burnt-sage smell, stronger here, threaded with something that tingled against her sinuses like static electricity. "That's a water stain, Miss Kowalski." "It's a scorch mark from a collapsed aperture. I've seen them before, in the restricted archives—on items that were pulled through from the other side. Same residue, same radius." Eva fumbled in her satchel and pulled out a small object that caught the emergency light and threw it back in a greenish glint. "Here. Look." She held it out. Quinn took it automatically, and her breath caught. It was a compass. Small, brass, its casing filmed with verdigris that had settled into the etched lines of symbols Quinn didn't recognize—protective sigils, Eva would probably call them. The face was clean glass over a white dial, but the needle didn't point north. It didn't point anywhere steady. It trembled and swung in tight, agitated arcs, like a dog straining at a leash. "It's a Veil Compass," Eva said. "It points toward the nearest supernatural rift or portal. Right now, it's going haywire because there's residual energy everywhere down here. But look—" She stepped closer, close enough that Quinn could smell old paper and bergamot. "Look at the needle when I move toward the body." Eva walked toward the dead man. The needle swung hard and locked, pointing directly at the corpse. Quinn's mouth went dry. She looked at the compass. She looked at the body. She looked at Eva Kowalski, who was tucking her hair behind her ear again with a hand that shook. "Three years ago," Quinn said, and her voice came out flat, stripped of everything. "My partner. DS Morris. We were working a case in Rotherhithe—a string of disappearances near the old warehouses. We split up to cover more ground. When I found him, he was lying on the floor of an empty unit. Face up. Arms at his sides. No wounds, no marks, no nothing. The pathologist listed cause of death as cardiac arrest, but his heart was healthy. Forty-two years old, ran marathons, no family history." She turned the compass over in her gloved hand. The verdigris left a faint green trace on the nitrile. "He was lying in a circle of discolored concrete. About two feet across." Eva said nothing. Her silence was louder than any confirmation. Quinn looked down at Desmond Crewe, arranged on the platform like a sacrifice on an altar, and something shifted behind her ribs—a tectonic grinding, the slow fracture of a worldview she'd maintained for forty-one years through sheer discipline and force of will. The evidence didn't add up. It had never added up, not with Morris, not with any of the cases she'd quietly filed under unexplained, the ones that kept her awake at three in the morning, the ones that had put the grey in her hair. She looked at the compass needle, still locked on the body. "Tell me everything," she said. "Start from the beginning. And Miss Kowalski—" She fixed Eva with a stare that had broken harder people than a twenty-six-year-old museum researcher. "If you lie to me, even once, I'll know." Eva adjusted her glasses. Tucked the curl. Drew a breath that rattled slightly in her chest. "The beginning's a lot further back than you think, Detective." Quinn checked her watch—the old leather one, Morris's, worn on her left wrist since the day they'd buried him. 4:52 a.m. Above them, London was starting to stir, a city that believed itself rational and mapped and understood. Down here, in a station that didn't exist, standing over a man who'd died of nothing, holding a compass that pointed toward the impossible, Quinn felt the last of her certainty crack and fall away like plaster from a ruined wall. "Then you'd better talk fast," she said. "I've got a feeling this market moves, and I'd like to know where it's going before it gets there."
created_at"2026-02-17T02:52:18.104702+00:00" 2/17/2026, 2:52:18 AM
model"anthropic/claude-4.6-opus-20260205"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency863
moderation_latency(null)
generation_time67740
tokens_prompt923
tokens_completion2623
native_tokens_prompt938
native_tokens_completion2479
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"
usage0.066665
router(null)
provider_responses
0
id"msg_01HabsoY92px9jQEnfDEJTNU"
status200
is_byokfalse
latency857
endpoint_id"c926c048-563e-44b0-8434-95965bee924c"
provider_name"Anthropic"
model_permaslug"anthropic/claude-4.6-opus-20260205"
api_type"completions"
id"gen-1771296669-jFytTakupk8qvBRoVI68"
upstream_id"msg_01HabsoY92px9jQEnfDEJTNU"
total_cost0.066665
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"

Evaluation details

Result Evaluator Details Meta Data
38.0952% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags7
adverbTagCount2
adverbTags
0"Eva said quietly [quietly]"
1"Quinn said, and her voice came out flat, stripped of everything [flat]"
71.5100% AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount1755
totalAiIsmAdverbs5
found
0
adverb"carefully"
count2
1
adverb"slightly"
count1
2
adverb"slowly"
count1
3
adverb"very"
count1
highlights
0"carefully"
1"slightly"
2"slowly"
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)
77.2080% AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount1755
totalAiIsms4
found
0
word"glint"
count1
1
word"trembled"
count1
2
word"processed"
count1
3
word"etched"
count1
highlights
0"glint"
1"trembled"
2"processed"
3"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
emotionTells1
narrationSentences118
matches
0"was terrified"
100.0000% Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount1
hedgeCount0
narrationSentences118
filterMatches
0"watch"
hedgeMatches(empty)
100.0000% Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount0
totalSentences140
matches(empty)
100.0000% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs53
mean32.55
std25.6
cv0.787
sampleLengths
076
157
254
335
463
540
612
773
864
93
106
1164
1217
137
145
1572
1617
1751
184
1924
206
2149
2217
2362
2428
255
267
2740
285
2924
3014
312
3241
3347
346
3555
3612
3764
3852
3917
404
4129
4287
4319
4413
4510
4687
4711
4837
4916
100.0000% Passive voice overuse
Target: ≤5% passive sentences
passiveCount3
totalSentences118
matches
0"been stripped"
1"was terrified"
2", worn"
100.0000% Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount4
totalVerbs240
matches
0"was keeping"
1"was staring"
2"was tucking"
3"was starting"
94.0000% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1355
adjectiveStacks1
stackExamples
0"same burnt-sage smell,"
adverbCount37
adverbRatio0.02730627306273063
lyAdverbCount18
lyAdverbRatio0.013284132841328414
100.0000% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences140
echoCount0
echoWords(empty)
100.0000% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences140
mean12.32
std11.45
cv0.929
sampleLengths
011
133
232
38
43
57
617
714
88
99
1020
1114
1211
1324
144
157
165
172
1823
195
206
2122
222
2325
2413
2512
264
2711
2816
295
3016
3121
322
335
343
3511
363
3713
3827
393
403
413
4226
4333
445
455
4612
477
485
497
55.4762% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats14
diversityRatio0.39285714285714285
totalSentences140
uniqueOpeners55
67.8571% Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags7
fancyCount3
fancyTags
0"Quinn murmured (murmur)"
1"Eva said quietly (say quietly)"
2"Quinn said, and her voice came out flat, stripped of everything (say, come out flat)"
88.4792%