Run: 2026-02-18-01KHQ947G1TPRFAAV6WQNES1MQ

Run Details

Duration:
52.3s
Cost:
$0.031914
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 abandoned station smelled of wet concrete and something older — a mineral bitterness that caught at the back of the throat like pennies dissolving on the tongue. Quinn descended the maintenance stairs with her torch angled low, one hand trailing the damp brick, each step deliberate. Behind her, the door at street level had already swung shut, cutting off the grey Camden morning. She'd been on the job long enough to know that crime scenes had their own atmosphere before you even looked at the evidence. This one felt wrong in a way she couldn't yet name. The call had come in at half past six. A utility worker, rerouted to check a gas main, had found the body. Now, forty minutes later, Quinn reached the platform and swept her torch across it. The Tube station had been decommissioned in 1952. That much she'd confirmed on the drive over. The tiles on the curved walls were the old cream and burgundy style, many of them cracked, some missing entirely, their absence leaving dark rectangular wounds in the brickwork. The platform itself was perhaps thirty metres long. At the far end, her colleague DS Priya Mehta crouched beside a collection of market stalls — or what remained of them. Folding tables upended, their contents scattered across the concrete. Glass vials shattered. Small cloth packages burst open, spilling their contents into powder traces that had already been photographed and flagged. The body lay between two of the overturned tables. Male, fifties, well-dressed in the specific way that suggested money spent quietly rather than loudly. No wallet. No phone. The Scene of Crime officers had already done their preliminary sweep, and Quinn could see their numbered yellow markers dotting the platform like a field of small flowers. "Quinn." Mehta stood as she approached, pulling her mask down to her chin. She was twelve years younger than Quinn and sharper than most people gave her credit for, which Quinn had always appreciated. "Victim is Thomas Vane. ID came from a signet ring — monogram inside the band. Next of kin not yet notified." "Cause of death?" "Pathologist's preliminary is cardiac event. No obvious trauma, no ligature marks, no puncture wounds they can find." Mehta paused. "Straightforward, if you ignore where he is." Quinn crouched beside the body, studying the face. Vane looked peaceful in the particular theatrical way that sometimes happened — eyes closed, expression slack rather than strained. No petechiae, she noted. No burst vessels. If his heart had stopped, it hadn't struggled doing it. "Who called this market in?" she said. "It's flagged at the station as a known location for — " Mehta consulted her notebook — "unlicensed trade in controlled substances. Vice has been trying to get a warrant for months." "When did Vice know about it?" "Six weeks ago. Anonymous tip." Quinn stood. She walked slowly along the row of upended stalls, her torch moving across the scattered goods. Most of the vials had shattered, but a few had survived, rolling into corners or coming to rest against the platform wall. She looked at them without touching. They were stoppered with wax, their contents dark — deep amber, near-black in some cases — and the labels, when she could read them, were handwritten in a script she didn't recognise. Not any European language she knew. Not any language she knew at all. She moved further along. There were small carved figures wrapped in felt. A collection of dried botanicals in waxed paper, some of them charred at the edges. Books, several of them, their covers plain and their pages foxed with age. Near the far wall, almost beneath the platform's decorative tiling, she found something that hadn't been flagged. A small brass compass lay in the shadow of a broken wooden crate, its casing pale with verdigris, its face etched with a fine repeating pattern she needed to angle her torch to read properly. Not north-south markings. Something else. The needle was spinning. She stared at it. The needle on a compass didn't spin. Not like this — not a slow, deliberate rotation, tracking something as methodically as a clock hand. It moved with what she could only describe as intention. "Mehta," she called, keeping her voice level. "Come look at this." Mehta appeared at her shoulder. "Bit of junk market stuff." "The needle's moving." A pause. "Probably magnetic interference. Old station, old wiring." "There's no power in this station. It was decommissioned in 1952." Mehta said nothing to that. Quinn didn't touch the compass. She straightened and looked back at the body, then at the stalls, then at the platform entrance — the old passenger access, long bricked up, though someone had clearly removed a section of the brickwork recently. The mortar around the removed section was fresh. No dust on the edges. "Tell me about the stall holders," she said. "Gone. Cleared out before the utility worker arrived, presumably. We have no witnesses, no CCTV — this section of the station predates the network upgrade." "So we have a dead man in a black market that had very recently been vacated, with stalls full of goods that don't correspond to anything in our controlled substances database, and a cause of death that a pathologist is calling cardiac without evidence of exertion, struggle, or distress." She said it aloud not because Mehta didn't know the facts but because saying them helped her hear the shape of the problem. "It tracks," Mehta said carefully. "He came to buy something. Overexcited, perhaps. Older man, could have had an underlying condition —" "His shoes." Mehta blinked. "What about them?" Quinn pointed. Vane's shoes were polished black leather, expensive. The soles faced slightly upward because his legs were angled. Both soles were clean. Not merely clean — unmarked. Not a scuff, not a trace of the grime that covered every square centimetre of this platform. "He didn't walk in here," Quinn said. Mehta was quiet for a moment. Then, quietly: "He was moved." "He was brought here after he died. Or he died precisely where he fell, which means he arrived here without walking." She moved back toward the compass, studying the needle's slow rotation. It had shifted its angle in the time she'd been standing here. The direction it pointed had changed — and it was pointing now, she realised, directly at the bricked-up entrance. At the section of brick that had been recently removed. The mortar. She went back to it, crouched, and looked at the fresh edges properly for the first time. Smooth. No trowel marks. No tool marks. No sign of the physical work that removing and relaying that section of brickwork would have required. She stood up very slowly. Eighteen years. She'd built her entire understanding of how the world worked on eighteen years of it staying consistent. Cause and effect. Physical evidence as the grammar of truth. She'd lost Morris to a case that had never resolved, never made sense no matter how many times she'd read back through her own notes, and she'd filed the cognitive dissonance in a drawer she kept carefully closed. The drawer was opening now whether she wanted it to or not. "Get someone with archaeological training to look at that mortar," she said, keeping her voice perfectly flat. "And bag the compass. Full chain of custody." "We don't even know what it is." "That's why I want it bagged." She turned to face Mehta. "And pull everything Vice has on this location. Every report, every tip, everything back to the beginning. I want to know who gave them that anonymous information six weeks ago." Mehta was looking at her with an expression that was three-quarters concern and one quarter something more careful. "You think this connects to something bigger." Quinn looked once more at the compass on the floor, its verdigris-pale casing, its needle still moving with that slow and purposeful rotation like a finger drawing a circle around something it wanted her to notice. "I think," she said, "that someone wanted us to find this scene. And I want to know why before we oblige them by behaving exactly as expected." She pulled a small notebook from her coat pocket and wrote the word compass, followed by a question mark and the name Morris. Then she put the notebook away, straightened her coat, and went to find out what Thomas Vane had been trying to buy.
created_at"2026-02-18T02:27:28.179488+00:00" 2/18/2026, 2:27:28 AM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency484
moderation_latency180
generation_time52073
tokens_prompt923
tokens_completion2174
native_tokens_prompt938
native_tokens_completion1940
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"
usage0.031914
router(null)
provider_responses
0
id"msg_01Bg2gUfVGiu44N8tNCsZHTE"
status200
is_byokfalse
latency484
endpoint_id"6d408764-7dd7-4626-bb87-a6cc1589bc86"
provider_name"Anthropic"
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
api_type"completions"
id"gen-1771381595-UErFvItaVffnhGN51Oly"
upstream_id"msg_01Bg2gUfVGiu44N8tNCsZHTE"
total_cost0.031914
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"

Evaluation details

Result Evaluator Details Meta Data
87.50% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags13
adverbTagCount2
adverbTags
0"Mehta said carefully [carefully]"
1"She moved back [back]"
dialogueSentences32
tagDensity0.406
leniency0.813
rawRatio0.154
effectiveRatio0.125
67.86% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1400
totalAiIsmAdverbs9
found
0
adverb"slowly"
count2
1
adverb"very"
count2
2
adverb"carefully"
count2
3
adverb"slightly"
count1
4
adverb"precisely"
count1
5
adverb"perfectly"
count1
highlights
0"slowly"
1"very"
2"carefully"
3"slightly"
4"precisely"
5"perfectly"
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)
78.57% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1400
totalAiIsms6
found
0
word"shattered"
count2
1
word"etched"
count1
2
word"magnetic"
count1
3
word"database"
count1
4
word"resolved"
count1
highlights
0"shattered"
1"etched"
2"magnetic"
3"database"
4"resolved"
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
narrationSentences96
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount0
narrationSentences96
filterMatches
0"hear"
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences114
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
maxSentenceWordsSeen72
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1408
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions9
unquotedAttributions0
matches(empty)
66.67% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions35
wordCount1059
uniqueNames11
maxNameDensity1.13
worstName"Mehta"
maxWindowNameDensity3
worstWindowName"Mehta"
discoveredNames
Camden1
Quinn11
Tube1
Priya1
Mehta12
Scene1
Crime1
European1
Morris2
Thomas1
Vane3
persons
0"Quinn"
1"Mehta"
2"Crime"
3"Morris"
4"Thomas"
5"Vane"
places(empty)
globalScore0.933
windowScore0.667
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences60
glossingSentenceCount0
matches(empty)
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount1408
matches(empty)
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences114
matches
0"know that crime"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs48
mean29.33
std24.57
cv0.838
sampleLengths
064
134
236
3105
456
555
63
726
844
97
1032
116
125
1391
1440
1517
1644
174
1834
1911
2010
213
229
2311
245
2554
268
2725
2872
2921
302
315
3245
337
3411
3563
3610
3743
385
3967
4012
4125
427
4341
4425
4536
4627
4745
86.99% Passive voice overuse
Target: ≤2% passive sentences
passiveCount5
totalSentences96
matches
0"been decommissioned"
1"been photographed"
2"were stoppered"
3"were handwritten"
4"been flagged"
5"were angled"
49.34% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount4
totalVerbs177
matches
0"was spinning"
1"was pointing"
2"was opening"
3"was looking"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount10
semicolonCount0
flaggedSentences9
totalSentences114
ratio0.079
matches
0"The abandoned station smelled of wet concrete and something older — a mineral bitterness that caught at the back of the throat like pennies dissolving on the tongue."
1"At the far end, her colleague DS Priya Mehta crouched beside a collection of market stalls — or what remained of them."
2"Vane looked peaceful in the particular theatrical way that sometimes happened — eyes closed, expression slack rather than strained."
3"\"It's flagged at the station as a known location for — \" Mehta consulted her notebook — \"unlicensed trade in controlled substances. Vice has been trying to get a warrant for months.\""
4"They were stoppered with wax, their contents dark — deep amber, near-black in some cases — and the labels, when she could read them, were handwritten in a script she didn't recognise."
5"Not like this — not a slow, deliberate rotation, tracking something as methodically as a clock hand."
6"She straightened and looked back at the body, then at the stalls, then at the platform entrance — the old passenger access, long bricked up, though someone had clearly removed a section of the brickwork recently."
7"Not merely clean — unmarked."
8"The direction it pointed had changed — and it was pointing now, she realised, directly at the bricked-up entrance."
95.23% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1056
adjectiveStacks0
stackExamples(empty)
adverbCount48
adverbRatio0.045454545454545456
lyAdverbCount19
lyAdverbRatio0.017992424242424244
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences114
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences114
mean12.35
std10.76
cv0.872
sampleLengths
028
119
217
323
411
59
613
714
88
98
1029
118
1222
139
143
1518
169
1715
182
192
2028
2113
2221
2321
243
2519
267
278
2819
294
303
3110
327
3332
346
355
362
3716
3822
396
4032
416
427
434
448
4515
4613
4717
4835
493
68.42% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats7
diversityRatio0.4473684210526316
totalSentences114
uniqueOpeners51
41.67% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount1
totalSentences80
matches
0"Then she put the notebook"
ratio0.013
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount20
totalSentences80
matches
0"She'd been on the job"
1"She was twelve years younger"
2"She walked slowly along the"
3"She looked at them without"
4"They were stoppered with wax,"
5"She moved further along."
6"She stared at it."
7"It moved with what she"
8"she called, keeping her voice"
9"She straightened and looked back"
10"She said it aloud not"
11"She moved back toward the"
12"It had shifted its angle"
13"She went back to it,"
14"She stood up very slowly."
15"She'd built her entire understanding"
16"She'd lost Morris to a"
17"she said, keeping her voice"
18"She turned to face Mehta"
19"She pulled a small notebook"
ratio0.25
100.00% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount54
totalSentences80
matches
0"The abandoned station smelled of"
1"Quinn descended the maintenance stairs"
2"She'd been on the job"
3"This one felt wrong in"
4"The call had come in"
5"A utility worker, rerouted to"
6"The Tube station had been"
7"That much she'd confirmed on"
8"The tiles on the curved"
9"The platform itself was perhaps"
10"Glass vials shattered."
11"The body lay between two"
12"The Scene of Crime officers"
13"Mehta stood as she approached,"
14"She was twelve years younger"
15"Quinn crouched beside the body,"
16"Vane looked peaceful in the"
17"Mehta consulted her notebook"
18"She walked slowly along the"
19"She looked at them without"
ratio0.675
100.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount2
totalSentences80
matches
0"Now, forty minutes later, Quinn"
1"If his heart had stopped,"
ratio0.025
69.60% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences39
technicalSentenceCount4
matches
0"The abandoned station smelled of wet concrete and something older — a mineral bitterness that caught at the back of the throat like pennies dissolving on the to…"
1"Near the far wall, almost beneath the platform's decorative tiling, she found something that hadn't been flagged."
2"She'd lost Morris to a case that had never resolved, never made sense no matter how many times she'd read back through her own notes, and she'd filed the cognit…"
3"Mehta was looking at her with an expression that was three-quarters concern and one quarter something more careful."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags13
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags8
fancyCount0
fancyTags(empty)
dialogueSentences32
tagDensity0.25
leniency0.5
rawRatio0
effectiveRatio0
87.0612%