Run: 2026-02-17-01KHMR2ZF0AK75MENXNV2RQNSB

Run Details

Duration:
19.4s
Cost:
$0.009002
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 Camden Tube station hadn't seen a train in fifteen years. The Metropolitan Police had sealed it after the '09 flooding, and it had stayed sealed—officially. The rust-bright rails stretched into darkness on either side of the platform, a throat leading nowhere. Quinn descended the access ladder with methodical care, her worn leather watch catching the beam of her torch. The metal was slick, and the air tasted of copper and something else. Something organic that made the back of her neck prickle. Behind her, the sounds of the surface team faded to a murmur. The body was exactly where the anonymous tip had said it would be: sprawled across the platform near what had once been a ticket office. Male, mid-fifties, dressed in an expensive charcoal suit that was worth more than most people's monthly rent. His left arm was twisted beneath him at an angle that suggested either extreme violence or extreme dedication to an alibi. The back of his skull had met something hard enough to crack bone. Quinn crouched beside the body, her knees protesting. Forty-one was creeping up too fast, or maybe it was just the weight of three years that made her feel ancient. Three years since Morris had walked into that warehouse in Bermondsey. Three years of officially unsolved. "Detective Quinn." The voice came from behind her, cheerful and incongruous with the corpse. "Bit of a mess, innit?" Eva Kowalski stood at the platform's far end, her curly red hair escaping from a hasty ponytail, round glasses reflecting Quinn's torch. She wore what looked like borrowed police-issue coveralls over her museum work clothes. The girl—woman, technically, though Quinn still thought of her as the girl—held a leather satchel clutched to her chest like a shield. "What are you doing down here?" Quinn said, not bothering to hide the irritation in her voice. "And more importantly, how are you down here? This is a secured scene." "DS Price called me." Eva pushed her glasses up her nose, a nervous gesture Quinn had seen a hundred times. "He said there was something odd about the body, and I might be useful. Given my expertise." "Your expertise in what, exactly? You're a museum researcher, not a pathologist." "No, but I know things about—" Eva stopped, tucked her hair behind her left ear. A tell. She was lying. Or hiding something. Same thing in Quinn's experience. "I know things about the unusual. DS Price thought I might notice details you'd miss." Quinn stood, her joints crackling. Price. Of course. The younger detective had always been too willing to venture off the straight path, and that was putting it generously. In the past six months, he'd taken an unusual interest in the fringe cases, the ones that didn't fit standard operating procedure. The ones that smelled wrong. "Show me what you think is unusual," Quinn said, watching Eva's reaction carefully. Eva set her satchel down and moved to the body with surprising confidence. She crouched on the opposite side from where Quinn had been examining him, and her green eyes traced the pattern of blood spatter on the concrete. "The impact pattern," Eva said quietly. "It's wrong for a fall from the platform. See how it radiates? That's consistent with horizontal blunt force trauma, not vertical impact. But here's the thing—" She pointed to the corpse's right hand, which lay open and empty. "There's defensive bruising on his knuckles. Recent. And the wound on his head? Single impact. Clean. Professional." Quinn had already noted those details. She'd also noted the lack of weapon, the sealed station, and the complete absence of any sign of forced entry beyond the mysterious tip. What interested her was how Eva knew them. "How long have you been consulting with the Met?" Quinn asked. "I haven't. This is the first—" Eva caught herself. "This is the first time DS Price has called me in." Another lie. Quinn could taste it, acrid on her tongue like burnt sugar. "You're connected to the Veil Market." Eva's hands stilled. She didn't look up at Quinn, just kept her gaze fixed on the corpse's twisted arm. The hesitation lasted three seconds too long. "I don't know what you're talking about," Eva said. "Bone tokens, midnight auctions, enchanted compasses that point toward rifts instead of magnetic north. I may not know all the details, but I know enough to recognize the pattern. And I know that Victoria died three years ago for knowing too much about things that don't fit neatly into case files." Eva's head snapped up. "DS Morris?" "Detective Sergeant Victoria Morris," Quinn said flatly. "My partner. She walked into something she didn't understand, and it killed her. The case was closed as an accident. It wasn't." For the first time, Eva looked genuinely frightened. She scrambled backward, away from the body, and Quinn let her move. Control came in knowing when to apply pressure and when to let the rope go slack. "This man," Eva said, her voice smaller now. "Do you know who he is?" "Not yet. Fingerprints will take time. ID wasn't on the body." "His name was Marcus Thorne. He was a broker. For the Market." Eva swallowed hard. "He worked both sides—human and otherwise. He specialized in moving merchandise that shouldn't exist and making people who asked questions disappear." "Merchandise like enchanted compasses." "Among other things." Eva retrieved her satchel and pulled out a leather journal, the pages crammed with handwritten notes and sketches that made Quinn's eyes water to look at. Sigils. Runes. Things that predated any language she recognized. "I've been researching the black markets for two years. Real research, not just curiosity. Because Victoria Morris wasn't the only one who died under unclear circumstances. There are others. Seven in the past five years. All connected to investigations that didn't make sense." Quinn felt something shift in her chest, a tectonic shift of relief and dread grinding together. "Where did you get this?" "From the restricted archives. And from sources Price introduced me to. He's been trying to build a case against the Market for months, but he can't do it alone. He needed an expert, someone who understood the underlying mechanics. That's where I came in." Quinn looked back at the body of Marcus Thorne, at the single wound on his skull, the professional execution of it. Someone had wanted him dead badly enough to risk a sealed Tube station. Someone who knew him well enough to get close. Someone who understood the world he inhabited. "Tell me everything," Quinn said. "And don't leave anything out this time. Because Victoria Morris deserves better than an accident report, and so do those other seven people." Eva nodded, her fingers still trembling as she opened her journal. The darkness of the abandoned station seemed to deepen around them, as though the walls themselves were listening. Somewhere in that darkness, Quinn felt certain, there were answers. And behind those answers, something far larger and far more dangerous than anything the Metropolitan Police had encountered before.
created_at"2026-02-17T02:50:39.831521+00:00" 2/17/2026, 2:50:39 AM
model"anthropic/claude-4.5-haiku-20251001"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency381
moderation_latency(null)
generation_time19226
tokens_prompt923
tokens_completion1829
native_tokens_prompt937
native_tokens_completion1613
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"
usage0.009002
router(null)
provider_responses
0
id"msg_019eo16JWCg5fhyTopMEk7x7"
status200
is_byokfalse
latency381
endpoint_id"41d2915a-92e6-4993-b537-210b4e10cba8"
provider_name"Anthropic"
model_permaslug"anthropic/claude-4.5-haiku-20251001"
api_type"completions"
id"gen-1771296620-A75nB14daZUOrKGs6RyC"
upstream_id"msg_019eo16JWCg5fhyTopMEk7x7"
total_cost0.009002
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"

Evaluation details

Result Evaluator Details Meta Data
8.3333% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags8
adverbTagCount3
adverbTags
0"Quinn said, watching Eva's reaction carefully [carefully]"
1"Eva said quietly [quietly]"
2"Quinn said flatly [flatly]"
91.5398% AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount1182
totalAiIsmAdverbs1
found
0
adverb"carefully"
count1
highlights
0"carefully"
80.0000% AI-ism character names
Target: 0 AI-default names (17 tracked, −20% each)
codexExemptions(empty)
found
0"Marcus"
100.0000% AI-ism location names
Target: 0 AI-default location names (33 tracked, −20% each)
codexExemptions(empty)
found(empty)
74.6193% AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount1182
totalAiIsms3
found
0
word"methodical"
count1
1
word"magnetic"
count1
2
word"weight"
count1
highlights
0"methodical"
1"magnetic"
2"weight"
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
narrationSentences69
matches(empty)
100.0000% Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount2
hedgeCount1
narrationSentences69
filterMatches
0"watch"
1"feel"
hedgeMatches
0"seemed to"
100.0000% Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount1
totalSentences88
matches
0"know that Victoria"
100.0000% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs37
mean31.73
std20.24
cv0.638
sampleLengths
042
153
276
345
419
557
630
737
812
943
1055
1113
1239
1361
1438
1511
1620
1713
186
1926
209
2151
226
2329
2436
2514
2611
2736
284
2981
3016
315
3244
3350
3428
3511
3647
100.0000% Passive voice overuse
Target: ≤5% passive sentences
passiveCount0
totalSentences69
matches(empty)
100.0000% Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount4
totalVerbs121
matches
0"was creeping"
1"was lying"
2"was putting"
3"were listening"
94.3293% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount753
adjectiveStacks0
stackExamples(empty)
adverbCount35
adverbRatio0.04648074369189907
lyAdverbCount13
lyAdverbRatio0.017264276228419653
100.0000% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences88
echoCount0
echoWords(empty)
100.0000% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences88
mean13.34
std9.51
cv0.713
sampleLengths
011
115
216
318
413
510
612
725
817
921
1013
118
1221
1311
145
1514
165
1722
1813
1922
2017
2113
2220
2317
2412
2515
262
273
283
295
3015
315
321
332
3420
3522
365
3713
3813
3926
406
4138
4217
436
4424
458
4611
479
4811
492
85.2273% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats5
diversityRatio0.5454545454545454
totalSentences88
uniqueOpeners48
81.2500% Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags8
fancyCount3
fancyTags
0"Quinn said, watching Eva's reaction carefully (say, watch)"
1"Eva said quietly (say quietly)"
2"Quinn said flatly (say flatly)"
89.1352%