Run: 2026-07-01-01KWE8YAHAKSR3QGBFXV3FTHQZ

Run Details

Duration:
39.2s
Cost:
$0.023230
Provider:
Amazon Bedrock

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 in at 4:47 a.m., which was, Quinn thought, an unholy hour for an unholy sort of crime. Camden Lock Market was still and grey in the pre-dawn, the canal beside it black as oil, and the uniformed constable who'd flagged her down looked like he hadn't slept and didn't intend to try again anytime soon. "Down here, ma'am," he said, and led her toward a service door she'd never noticed before, wedged between a shuttered vintage clothing stall and a wall plastered three-deep in gig posters. Behind the door: a stairwell, and past the stairwell, a platform that hadn't seen a train in forty years, all cracked tile and dead advertisement boards for products no one had bought since Thatcher was in office. "Abandoned Tube station," the constable said, unnecessarily. "I can read a sign, Constable." She could also read the smell in the air, which was wrong in a way she didn't have a word for yet — cold and sweet and metallic all at once, like a coin held too long against the tongue. The body was near the platform edge, and it was that body which made her stop three steps into the room and simply look, the way she'd trained herself to do at every scene before letting anyone else's theories crowd her own eyes. Male, mid-thirties by the look of the hands, dressed in what had probably been an expensive coat before it had been torn open at the sternum. No blood. That was the first wrong thing. A chest cavity like that should have painted the tile red for six feet in every direction, and instead there was nothing, just a clean dark absence, like the wound had been made by something that didn't leave a mess because it didn't work by the same rules as a knife. "DS Ferris," said the man crouched by the body, standing as she approached. He was younger than her by a decade, eager in the way ambitious young detectives were eager, which was to say he had already decided what had happened and was only waiting for someone senior to confirm it. "Ritualistic, I'd say. Look at the wound pattern — this is gang stuff, copying something they saw online. Cult aesthetic. We've had two like this in Hackney this year." "Have we." Quinn crouched where he'd been crouching, close enough to the body that she could see the frost. That was the second wrong thing. Frost, in July, on skin that should have still been faintly warm given the hour of death the constable had guessed at. A thin rime of it along the collarbone, delicate as lace, already beginning to sweat away in the tunnel's ambient warmth. "Frostbite doesn't kill you in a few hours in London in summer, Ferris." "Could be a refrigeration unit nearby. Something to throw off time of death." He said it quickly, the way people said things they wanted to be true. She didn't answer. She was looking at the tile instead, at the platform floor around the body, where the grime of decades had been disturbed in a wide, near-perfect circle, as if someone had swept it clean with great care and greater purpose. Not drag marks. Not footprints, either, though there were a few of those at the circle's edge, boot prints she recognized as standard police issue, plus the constable's, plus — there — a set that stopped abruptly six feet out and didn't resume, as though whoever made them had simply ceased to exist mid-stride. "Ferris. Come look at this." He came, reluctantly, the way a man comes to have his theory contradicted. She pointed at the truncated prints. "Could've turned back," he offered. "Doubled on his own tracks." "Then where's the second line, going the other way?" She let that sit. "And why is there no blood, no drag pattern, no defensive wounds on the hands, and a chest wound that looks less like it was made by a blade and more like something reached in and simply — removed what it wanted." "You're reaching, Detective." "I'm looking." She straightened, joints protesting in the cold. Eighteen years of this had taught her that the wrongness in a scene was rarely subtle if you were willing to actually see it instead of filing it under whatever explanation let you go home and sleep. Three years ago she had failed to see it in time, and Morris had paid the price for her blindness, and she'd promised herself in the white fluorescent grief of the hospital corridor that she would never again let a convenient story stand in for an inconvenient truth. She walked the circle's edge, careful not to disturb it, and found, near what would once have been the platform's yellow safety line, a symbol scratched faintly into the tile — not spray paint, not chalk, but something that had actually bitten into the surface, a spiral radiating out from a central point like a whirlpool caught mid-collapse. Cult aesthetic, Ferris had said, and he wasn't entirely wrong, except that he thought it was theater and she was beginning to suspect it was instruction. "There's no van access down here," she said slowly. "No CCTV for eleven years, according to Transport for London's own paperwork, which is a strange thing for a supposedly abandoned station to still have skipped every single upgrade cycle. Whoever picked this spot picked it because it's invisible. That's not gang bravado. Gang bravado wants an audience. This wanted the opposite." Ferris shifted his weight, unconvinced but no longer quite so certain either. "So what, then? What's your theory?" She didn't have one. Not one she could say aloud to a man who'd laugh, or worse, write it into a report that would follow her through every promotion board for the rest of her career. But she thought of a leather satchel and round glasses and a friend of a friend at the British Museum who'd once, at a Christmas party three years back, made an off-hand joke about ley lines under the Underground that nobody else at the table had found funny, and Quinn, sober and watching, had noticed that the woman hadn't been joking at all. "I don't have one yet," she said instead. "But I know a fabrication when I see one, Ferris, and this scene has been staged to be read exactly one way by exactly the kind of person who stops looking once he's found a story he likes." She took out her phone and photographed the spiral before anyone could think to clean the tile, and something in her, old and stubborn and unhealed, told her this was only the first thread, and that if she pulled it, the fabric underneath was going to come apart in her hands whether she wanted it to or not.
created_at"2026-07-01T07:22:52.342Z" 7/1/2026, 7:22:52 AM
model"anthropic/claude-sonnet-5-20260630"
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external_user(null)
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cancelledfalse
latency3242
moderation_latency(null)
generation_time39153
tokens_prompt923
tokens_completion1645
native_tokens_prompt1285
native_tokens_completion2066
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)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"end_turn"
service_tier"default"
usage0.02323
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provider_responses
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endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
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is_byokfalse
latency3238
model_permaslug"anthropic/claude-sonnet-5-20260630"
provider_name"Amazon Bedrock"
status200
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request_id"req-1782890572-j6UTL8kJIYFEYrNAHk9g"
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api_type"completions"
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provider_name"Amazon Bedrock"
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data_region"global"

Evaluation details

Result Evaluator Details Meta Data
0.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags11
adverbTagCount3
adverbTags
0"She could also [also]"
1"she said slowly [slowly]"
2"she said instead [instead]"
dialogueSentences20
tagDensity0.55
leniency1
rawRatio0.273
effectiveRatio0.273
86.83% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1139
totalAiIsmAdverbs3
found
0
adverb"quickly"
count1
1
adverb"reluctantly"
count1
2
adverb"slowly"
count1
highlights
0"quickly"
1"reluctantly"
2"slowly"
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)
82.44% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1139
totalAiIsms4
found
0
word"warmth"
count1
1
word"perfect"
count1
2
word"standard"
count1
3
word"weight"
count1
highlights
0"warmth"
1"perfect"
2"standard"
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
narrationSentences38
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount1
narrationSentences38
filterMatches(empty)
hedgeMatches
0"tend to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences47
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen64
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1145
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions13
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions15
wordCount898
uniqueNames12
maxNameDensity0.33
worstName"Quinn"
maxWindowNameDensity1
worstWindowName"Ferris"
discoveredNames
Quinn3
Lock1
Market1
Thatcher1
July1
Eighteen1
Morris1
Ferris2
British1
Museum1
Christmas1
Underground1
persons
0"Quinn"
1"Thatcher"
2"Morris"
3"Ferris"
places
0"July"
1"British"
2"Christmas"
globalScore1
windowScore1
63.79% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences29
glossingSentenceCount1
matches
0"looked like he hadn't slept and didn't in"
25.33% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches2
per1kWords1.747
wordCount1145
matches
0"not spray paint, not chalk, but something"
1"not chalk, but something"
0.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount3
totalSentences47
matches
0"was that body"
1"let that sit"
2"noticed that the"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs22
mean52.05
std35.12
cv0.675
sampleLengths
059
168
27
346
4128
580
668
713
827
997
105
1119
1210
1355
143
1594
1684
1761
1818
1999
2046
2158
77.56% Passive voice overuse
Target: ≤2% passive sentences
passiveCount3
totalSentences38
matches
0"been torn"
1"been made"
2"been disturbed"
34.37% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount4
totalVerbs161
matches
0"was only waiting"
1"was looking"
2"were willing"
3"was beginning"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount4
semicolonCount0
flaggedSentences3
totalSentences47
ratio0.064
matches
0"\"I can read a sign, Constable.\" She could also read the smell in the air, which was wrong in a way she didn't have a word for yet — cold and sweet and metallic all at once, like a coin held too long against the tongue."
1"Not footprints, either, though there were a few of those at the circle's edge, boot prints she recognized as standard police issue, plus the constable's, plus — there — a set that stopped abruptly six feet out and didn't resume, as though whoever made them had simply ceased to exist mid-stride."
2"She walked the circle's edge, careful not to disturb it, and found, near what would once have been the platform's yellow safety line, a symbol scratched faintly into the tile — not spray paint, not chalk, but something that had actually bitten into the surface, a spiral radiating out from a central point like a whirlpool caught mid-collapse."
87.41% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount900
adjectiveStacks0
stackExamples(empty)
adverbCount48
adverbRatio0.05333333333333334
lyAdverbCount19
lyAdverbRatio0.021111111111111112
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences47
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences47
mean24.36
std18.11
cv0.743
sampleLengths
021
138
231
337
47
546
643
726
82
96
1051
1113
1238
1329
1419
156
1622
1721
1813
1927
203
2140
223
2351
245
2513
266
275
285
2913
3042
313
329
3337
3448
3558
3626
379
3852
3912
406
414
4232
4363
448
4538
4658
95.74% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats2
diversityRatio0.6382978723404256
totalSentences47
uniqueOpeners30
0.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount0
totalSentences36
matches(empty)
ratio0
53.33% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount15
totalSentences36
matches
0"he said, and led her"
1"She could also read the"
2"He was younger than her"
3"He said it quickly, the"
4"She didn't answer."
5"She was looking at the"
6"He came, reluctantly, the way"
7"She pointed at the truncated"
8"She let that sit"
9"She straightened, joints protesting in"
10"She walked the circle's edge,"
11"she said slowly"
12"She didn't have one."
13"she said instead"
14"She took out her phone"
ratio0.417
98.89% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount26
totalSentences36
matches
0"The call had come in"
1"Camden Lock Market was still"
2"he said, and led her"
3"the constable said, unnecessarily"
4"She could also read the"
5"The body was near the"
6"That was the first wrong"
7"A chest cavity like that"
8"He was younger than her"
9"Quinn crouched where he'd been"
10"That was the second wrong"
11"A thin rime of it"
12"He said it quickly, the"
13"She didn't answer."
14"She was looking at the"
15"He came, reluctantly, the way"
16"She pointed at the truncated"
17"She let that sit"
18"She straightened, joints protesting in"
19"She walked the circle's edge,"
ratio0.722
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences36
matches(empty)
ratio0
0.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences20
technicalSentenceCount7
matches
0"Camden Lock Market was still and grey in the pre-dawn, the canal beside it black as oil, and the uniformed constable who'd flagged her down looked like he hadn'…"
1"Behind the door: a stairwell, and past the stairwell, a platform that hadn't seen a train in forty years, all cracked tile and dead advertisement boards for pro…"
2"A chest cavity like that should have painted the tile red for six feet in every direction, and instead there was nothing, just a clean dark absence, like the wo…"
3"She was looking at the tile instead, at the platform floor around the body, where the grime of decades had been disturbed in a wide, near-perfect circle, as if …"
4"Not footprints, either, though there were a few of those at the circle's edge, boot prints she recognized as standard police issue, plus the constable's, plus —…"
5"She walked the circle's edge, careful not to disturb it, and found, near what would once have been the platform's yellow safety line, a symbol scratched faintly…"
6"But she thought of a leather satchel and round glasses and a friend of a friend at the British Museum who'd once, at a Christmas party three years back, made an…"
34.09% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags11
uselessAdditionCount2
matches
0"the constable said, unnecessarily"
1"She straightened, joints protesting in the cold"
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags6
fancyCount1
fancyTags
0"the man crouched (crouch)"
dialogueSentences20
tagDensity0.3
leniency0.6
rawRatio0.167
effectiveRatio0.1
67.9929%