Run: 2026-02-18-01KHQ9210TDESTAYS9PV0GBEY1

Run Details

Duration:
42.4s
Cost:
$0.027219
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 call had come at half past two in the morning, and Quinn had driven through Camden's rain-slicked streets with the particular alertness of someone who had never fully learned to sleep. Now she stood at the top of the access shaft, flashlight in hand, looking down into the dark. "Crime scene's about forty metres in," said Constable Marsh, who was young enough that this qualified as an adventure. He had a torch strapped to his forehead like a coal miner. "Station's been decommissioned since the seventies. Council's been meaning to seal it up properly for years." "Evidently they didn't." Quinn descended the ladder one-handed, her leather watch catching the light as she gripped each rung. The walls sweated moisture. Below, the abandoned platform opened up in fragments of torchlight — curved Victorian brickwork, the ghost of a station name still visible beneath decades of grime, broken tiles arranged on the ground like fallen teeth. The body was at the far end. She pulled on nitrile gloves without looking away from the scene. The forensics officer, Sharma, was crouched near the victim, and he glanced up when Quinn's boots crunched on the platform. "Detective Quinn. You'll want to see this." She wanted to see all of it. She made herself walk the perimeter first, flashlight playing across every surface with methodical patience — the military bearing her old training officer had drilled into her, and that she'd never quite shaken. The platform was sealed off from the rest of the tunnel system at both ends, thick with a silence that wasn't just the absence of sound but felt like something denser. Pressure. The kind you felt in your ears. She'd felt something like it once before, three years ago. She didn't let herself follow that thought. The victim was male, early forties, wearing a well-made coat that had seen better days. No wallet, no phone. His right hand was curled loosely around something, and whatever it was had already been logged and bagged by Sharma — a small object, brass-coloured, sitting in an evidence bag near his knee. "What is that?" Quinn crouched beside Sharma. "Compass. Old one, by the look of it. Bit unusual." She reached for the bag and held it up. Even through the plastic, she could see the verdigris patina on the casing, and the faint markings on the face — not compass points, not numbers. Something else. Geometric. Etched with a precision that looked less like decoration than instruction. "Unusual," she agreed, setting it down carefully. "Theory so far," said Marsh from behind her, "is that someone lured him down here, killed him, and left through the access shaft. Door up top had the padlock cut. Clean cut, probably bolt cutters." Quinn looked at the body again. She looked at the platform. She looked at the two ends of the station, both sealed with heavy brick and board, both entirely undisturbed — no disturbed mortar, no fresh marks, no other ingress. "One way in," she said. "One way out," Marsh confirmed. "And we found no one when we came down." "The shaft was the only—" "Then who left?" Marsh opened his mouth and closed it again. Quinn straightened and swept her light across the platform ceiling, then the walls, then the floor in a slow grid pattern. The dust was the thing. The dust was wrong. It lay thickly everywhere except for a patch near the north end of the platform — not scraped away, not foot-trafficked, but absent. A circle of clean floor approximately two metres across, as though the air above it had been scoured. The brickwork at the boundary of that circle had a faint discolouration, the kind that brick took on when subjected to heat, or something very like heat. She was still staring at it when she heard the access shaft rattle. The figure who descended moved with a careful, deliberate urgency that Quinn recognised as the gait of someone trying very hard not to look frightened. Small, red-haired, wearing a coat two sizes too large and carrying a worn leather satchel that sagged with the weight of its contents. The woman pushed round glasses up her nose as she reached the platform floor and blinked in the torchlight. Quinn had her warrant card out before the woman took another step. "This is a crime scene. How did you get past the perimeter?" "I — the officers at the top let me through, actually. I work for the British Museum." The woman produced a lanyard with slightly more composure than her entrance had suggested she possessed. "Eva Kowalski. Research assistant, restricted archives. Someone called me." "Someone called you." "Yes." Kowalski glanced at the body, and something moved through her face — not the ordinary shock of a civilian confronted with death, but recognition. A kind of grim, resigned recognition. "I was asked to consult." Quinn looked at Marsh. Marsh looked at the ceiling. The ceiling offered nothing. "By whom?" Quinn asked. "A colleague of mine. Someone who studies — unusual circumstances." Kowalski set her satchel down and crouched near the evidence bag with the compass, studying it without touching it. Her curly red hair fell forward and she tucked it behind her left ear without seeming to notice she'd done it. "This is a Veil compass. Shade-made, by the sigils. It's attuned to supernatural rifts." She said it the way someone said a difficult word in a foreign language — careful, braced for disbelief. "Supernatural," Quinn said. "I know how that sounds." "Walk me through your interpretation." Kowalski looked up. Something in Quinn's tone had apparently surprised her — the absence of dismissal. She stood and turned toward the north end of the platform, toward the clean circle of floor, and pointed. "That's an ingress point. A rift. It opens and closes, and it's been active recently — probably within the last twelve hours. The compass would have led him to it." Quinn said nothing for a moment. She looked at the circle. She looked at the compass. She thought about a back alley in Whitechapel three years ago, and a sound like air tearing, and DS Morris stepping toward something that should not have been there, and then not stepping anywhere ever again. "The killer came through," Quinn said carefully. "And left the same way." Kowalski straightened and met her eyes. "That's why there's no one in the shaft, Detective. There's no one to find." Quinn looked at the compass a moment longer, at the sigils etched into its face. Then she picked up the evidence bag, turned it over in her hand, and felt the particular, settled weight of a case that had just become far more complicated than anyone upstairs was prepared to hear about. "Start from the beginning," she said. "Tell me everything you know about these rifts." Marsh made a sound of protest. Quinn silenced it with a glance. Kowalski opened her satchel, and the sound of books and papers filled the cold underground air.
created_at"2026-02-18T02:26:06.882053+00:00" 2/18/2026, 2:26:06 AM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency456
moderation_latency(null)
generation_time42363
tokens_prompt923
tokens_completion1795
native_tokens_prompt938
native_tokens_completion1627
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"
usage0.027219
router(null)
provider_responses
0
id"msg_01AHrpdxzcfi1YwT9Bb2YmZ9"
status200
is_byokfalse
latency455
endpoint_id"6d408764-7dd7-4626-bb87-a6cc1589bc86"
provider_name"Anthropic"
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
api_type"completions"
id"gen-1771381523-SuS3T8PWx8Iyt4cN7h7p"
upstream_id"msg_01AHrpdxzcfi1YwT9Bb2YmZ9"
total_cost0.027219
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags14
adverbTagCount1
adverbTags
0"Quinn said carefully [carefully]"
dialogueSentences31
tagDensity0.452
leniency0.903
rawRatio0.071
effectiveRatio0.065
74.25% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1165
totalAiIsmAdverbs6
found
0
adverb"loosely"
count1
1
adverb"carefully"
count2
2
adverb"very"
count2
3
adverb"slightly"
count1
highlights
0"loosely"
1"carefully"
2"very"
3"slightly"
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)
74.25% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1165
totalAiIsms6
found
0
word"methodical"
count1
1
word"silence"
count1
2
word"etched"
count2
3
word"weight"
count2
highlights
0"methodical"
1"silence"
2"etched"
3"weight"
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
narrationSentences71
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount0
narrationSentences71
filterMatches
0"watch"
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences87
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
maxSentenceWordsSeen37
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1170
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions14
unquotedAttributions0
matches(empty)
50.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions36
wordCount922
uniqueNames9
maxNameDensity1.74
worstName"Quinn"
maxWindowNameDensity3.5
worstWindowName"Quinn"
discoveredNames
Quinn16
Camden1
Constable1
Marsh7
Victorian1
Sharma3
Kowalski5
Whitechapel1
Morris1
persons
0"Quinn"
1"Sharma"
2"Kowalski"
3"Morris"
places
0"Camden"
1"Constable"
2"Marsh"
3"Whitechapel"
globalScore0.632
windowScore0.5
0.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences49
glossingSentenceCount3
matches
0"felt like something denser"
1"something like it once before, three years a"
2"inn's tone had apparently surprised her — the"
0.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches3
per1kWords2.564
wordCount1170
matches
0"not scraped away, not foot-trafficked, but absent"
1"not foot-trafficked, but absent"
2"not the ordinary shock of a civilian confronted with death, but recognition"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences87
matches
0"follow that thought"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs43
mean27.21
std25.43
cv0.934
sampleLengths
050
147
23
355
47
531
67
779
817
952
107
1110
1249
137
1435
1540
165
175
189
195
203
218
2298
2313
2467
2524
2642
273
2836
2913
304
3183
323
335
345
3565
3652
377
3825
3952
4014
4112
4216
85.50% Passive voice overuse
Target: ≤2% passive sentences
passiveCount4
totalSentences71
matches
0"was crouched"
1"was curled"
2"been logged"
3"been scoured"
4"was prepared"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount0
totalVerbs154
matches(empty)
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount9
semicolonCount0
flaggedSentences9
totalSentences87
ratio0.103
matches
0"Below, the abandoned platform opened up in fragments of torchlight — curved Victorian brickwork, the ghost of a station name still visible beneath decades of grime, broken tiles arranged on the ground like fallen teeth."
1"She made herself walk the perimeter first, flashlight playing across every surface with methodical patience — the military bearing her old training officer had drilled into her, and that she'd never quite shaken."
2"His right hand was curled loosely around something, and whatever it was had already been logged and bagged by Sharma — a small object, brass-coloured, sitting in an evidence bag near his knee."
3"Even through the plastic, she could see the verdigris patina on the casing, and the faint markings on the face — not compass points, not numbers."
4"She looked at the two ends of the station, both sealed with heavy brick and board, both entirely undisturbed — no disturbed mortar, no fresh marks, no other ingress."
5"It lay thickly everywhere except for a patch near the north end of the platform — not scraped away, not foot-trafficked, but absent."
6"\"Yes.\" Kowalski glanced at the body, and something moved through her face — not the ordinary shock of a civilian confronted with death, but recognition."
7"\"This is a Veil compass. Shade-made, by the sigils. It's attuned to supernatural rifts.\" She said it the way someone said a difficult word in a foreign language — careful, braced for disbelief."
8"Something in Quinn's tone had apparently surprised her — the absence of dismissal."
98.82% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount919
adjectiveStacks0
stackExamples(empty)
adverbCount38
adverbRatio0.041349292709466814
lyAdverbCount11
lyAdverbRatio0.011969532100108813
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences87
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences87
mean13.45
std10.27
cv0.764
sampleLengths
032
118
219
312
416
53
616
74
835
97
1011
1120
127
137
1433
1531
161
177
1810
197
2015
214
2233
237
2410
259
2626
272
281
2911
307
3135
326
335
3429
355
365
379
385
393
408
4121
425
434
4423
4518
4627
4713
4825
4923
70.50% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats7
diversityRatio0.47126436781609193
totalSentences87
uniqueOpeners41
52.91% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount1
totalSentences63
matches
0"Then she picked up the"
ratio0.016
99.37% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount19
totalSentences63
matches
0"He had a torch strapped"
1"She pulled on nitrile gloves"
2"She wanted to see all"
3"She made herself walk the"
4"She'd felt something like it"
5"She didn't let herself follow"
6"His right hand was curled"
7"She reached for the bag"
8"she agreed, setting it down"
9"She looked at the platform."
10"She looked at the two"
11"It lay thickly everywhere except"
12"She was still staring at"
13"Her curly red hair fell"
14"She said it the way"
15"She stood and turned toward"
16"She looked at the circle."
17"She looked at the compass."
18"She thought about a back"
ratio0.302
31.43% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount54
totalSentences63
matches
0"The call had come at"
1"He had a torch strapped"
2"Quinn descended the ladder one-handed,"
3"The walls sweated moisture."
4"The body was at the"
5"She pulled on nitrile gloves"
6"The forensics officer, Sharma, was"
7"She wanted to see all"
8"She made herself walk the"
9"The platform was sealed off"
10"The kind you felt in"
11"She'd felt something like it"
12"She didn't let herself follow"
13"The victim was male, early"
14"His right hand was curled"
15"Quinn crouched beside Sharma"
16"She reached for the bag"
17"she agreed, setting it down"
18"Quinn looked at the body"
19"She looked at the platform."
ratio0.857
100.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount2
totalSentences63
matches
0"Now she stood at the"
1"Even through the plastic, she"
ratio0.032
0.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences31
technicalSentenceCount7
matches
0"The call had come at half past two in the morning, and Quinn had driven through Camden's rain-slicked streets with the particular alertness of someone who had n…"
1"The platform was sealed off from the rest of the tunnel system at both ends, thick with a silence that wasn't just the absence of sound but felt like something …"
2"The victim was male, early forties, wearing a well-made coat that had seen better days."
3"The figure who descended moved with a careful, deliberate urgency that Quinn recognised as the gait of someone trying very hard not to look frightened."
4"Small, red-haired, wearing a coat two sizes too large and carrying a worn leather satchel that sagged with the weight of its contents."
5"She thought about a back alley in Whitechapel three years ago, and a sound like air tearing, and DS Morris stepping toward something that should not have been t…"
6"Then she picked up the evidence bag, turned it over in her hand, and felt the particular, settled weight of a case that had just become far more complicated tha…"
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags14
uselessAdditionCount0
matches(empty)
85.48% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags9
fancyCount2
fancyTags
0"she agreed (agree)"
1"Marsh confirmed (confirm)"
dialogueSentences31
tagDensity0.29
leniency0.581
rawRatio0.222
effectiveRatio0.129
77.4166%