Run: 2026-07-01-01KWE9TS2GWW2NC5YY0E5C1NQW

Run Details

Duration:
34.7s
Cost:
$0.023398
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="4417" name="Tomás Herrera" aliases="Tommy, Tomás, Herrera" pronouns="he/him" species="Human" storyRole="Support"> <eyeColor>warm brown</eyeColor> <hair>short curly dark brown</hair> <height>5'10"</height> <age>29</age> <skinTone>olive skin</skinTone> <scar>scar running along his left forearm from a knife attack</scar> <medallion>Saint Christopher medallion around his neck</medallion> <birthplace>Seville, Spain</birthplace> <description>A former paramedic who provides off-the-books medical care for the clique.</description> <backstory>Born in Seville, Spain. He moved to London to work for the NHS but lost his license after administering unauthorized treatments to supernatural patients.</backstory> </character> <location id="854" name="The Raven's Nest" aliases="the Nest, Raven, Silas' bar" realm="Earth"> <signColor>distinctive green neon sign above the entrance</signColor> <secretRoom>hidden back room accessible through a bookshelf, used for clandestine meetings</secretRoom> <description>A dimly lit bar in Soho, London. The walls are covered with old maps and black-and-white photographs.</description> </location> <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> </codex> Write a fully fleshed out scene of at least 1000 words in the thriller genre. A detective is pursuing a suspect through rain-soaked city streets at night. The chase takes them from the street level down into an underground market. The detective must decide whether to follow the suspect into unfamiliar and potentially dangerous territory. 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
Rain came down in sheets over Camden, turning the pavement to black glass and the gutters into rivers of orange light. Detective Harlow Quinn ran through it with her coat plastered to her shoulders, breath tearing in her chest, boots slapping through puddles that soaked clean through to her socks. Eighteen years on the force and she could still run down a suspect on a wet night better than half the twenty-somethings at the station. She'd make the joke to Morris later, if there'd been a later for Morris to hear it. She didn't let herself think about that now. Now there was only the man ahead of her, a lean shape in a long grey coat, weaving between shuttered market stalls with an agility that struck her as wrong somehow, too fluid, like his joints didn't quite work the way joints were supposed to. He'd been seen near three break-ins tied to a string of thefts that made no sense — objects vanishing from locked cases, security footage showing empty rooms and then, impossibly, not-empty ones. She'd been watching this alley for two nights running on nothing but instinct and the itch at the back of her neck that never really left her since the night Morris disappeared into a fog that shouldn't have existed on a clear evening in October. "Police! Stop!" she shouted, knowing he wouldn't, knowing it was procedure more than hope. He didn't even glance back. He vaulted a low fence with one hand, coat flaring like a wing, and dropped into the stairwell of a Tube station that had been closed for renovation — closed, according to every notice board she'd read, for the past six years. The Camden Town Deep Line. Boarded up. Except the boards were down now, torn away and stacked with peculiar neatness against the brick, and the stairwell breathed up warm orange light and a smell like woodsmoke and something sweeter underneath, cloves maybe, or old copper coins. Quinn stopped at the top of the steps, one hand on the cold railing, rain running off her fringe and into her eyes. Every instinct she'd built over eighteen years told her to call it in. Wait for backup. This was not procedure, chasing a suspect alone into an abandoned Underground station at eleven at night with no radio contact because the radio had gone to static three streets back — the exact kind of static it had thrown the night she lost Morris, that white noise like the world clearing its throat before something happened. She'd told herself for three years that was coincidence. Grief did strange things to memory. Below her, faintly, she heard laughter. Actual laughter, warm and human, and under it something like a fiddle being tuned, and the low murmur of a crowd. Not the sound an abandoned station should make. She thought of Morris's face, the way it had gone the colour of old wax in that last second before the fog took him, his mouth open on a word she never heard finish. She thought of eighteen years of closed cases and the medals in the drawer at home she never looked at, and the fact that not one of them had prepared her for whatever waited beneath London's streets, patient as rot, older than the badge in her pocket. She went down anyway. The stairs were slick with rain for the first twenty steps and then, abruptly, dry, as though some line had been drawn across the world that the weather did not cross. The orange light brightened. The smell of cloves and copper thickened until she could taste it at the back of her throat. She kept one hand on her weapon, more for her own comfort than any real faith it would help her here, and she went down into what had once been a Tube platform and was now — her mind kept trying to reject the sight even as her eyes insisted on it — a market. Stalls ran the length of the old platform where a train had not run in six years, canvas awnings striped in colours that seemed to shift when she wasn't looking dead at them. A woman with skin like polished slate sold jars of something that glowed faint green and pulsed slow as a heartbeat. A boy — or something with a boy's shape — hawked bundles of black feathers tied with red thread. The air rang with voices speaking languages she didn't recognize and didn't want to. Every stall-holder, every browsing customer, wore around their neck or wrist or threaded through a buttonhole the same small object: a token carved from bone, yellowed with age, worn smooth by handling. Her suspect was forty feet ahead of her, moving through the crowd like water finding its path, and for one moment he turned his head and looked directly at her, and his eyes were the wrong colour entirely, not brown or blue or green but a flat, depthless black, like looking into a well with no bottom. He smiled. It was not a comforting expression. "You shouldn't have come down here, detective," he said, and his voice carried over the noise of the market with unnatural clarity, though he hadn't raised it at all. "Not without a token. Not without an invitation." Quinn's hand tightened on her weapon, though some old cop's logic told her a gun would do exactly nothing against whatever this was. "Stop right there," she said, and her voice, to her private relief, didn't shake. He didn't stop. He turned and melted back into the crowd, and the crowd — she would swear to this later, in the report she would never actually file — the crowd closed around him like a curtain, like the market itself had decided to hide him from her. She pushed forward anyway, shouldering past a man wrapped in what looked like living shadow, past a stall selling small cages with things inside that chittered and scratched. Heads turned. Conversations stopped. She felt the weight of attention settle on her like a hand pressed flat between her shoulder blades, and every one of those eyes — human-shaped and not — told her the same thing without a word spoken: *you do not belong here.* She kept moving. Eighteen years of chasing men through worse streets than this had taught her that stopping was how you lost them, how you lost everything. Somewhere ahead the suspect's grey coat flickered between two stalls and vanished around a corner where the platform gave way to old service tunnels, black-mouthed and dripping, lit only by the faintest green phosphorescence clinging to the walls like moss that glowed. She followed him into the dark, her weapon drawn, her heart going hard and fast against her ribs, and behind her the market's murmur closed up smooth and unbroken, as though she had never been there at all — as though the city above, the rain, the badge in her pocket, belonged to a version of London that no longer had any claim on where she was standing now.
created_at"2026-07-01T07:38:24.729Z" 7/1/2026, 7:38:24 AM
model"anthropic/claude-sonnet-5-20260630"
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external_user(null)
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cancelledfalse
latency1838
moderation_latency(null)
generation_time34650
tokens_prompt914
tokens_completion1697
native_tokens_prompt1264
native_tokens_completion2087
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"
usage0.023398
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provider_responses
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endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
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is_byokfalse
latency1838
model_permaslug"anthropic/claude-sonnet-5-20260630"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.17.0; linux; x64))"
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request_id"req-1782891504-oMXNz5A6kv1kG5xdeX4Q"
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api_type"completions"
id"gen-1782891504-Pov6LTYQkRJ2uICTeyAo"
upstream_id"msg_01E9R48QiR7iXmM4tUxYgTHu"
total_cost0.023398
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provider_name"Amazon Bedrock"
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data_region"global"

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags3
adverbTagCount0
adverbTags(empty)
dialogueSentences4
tagDensity0.75
leniency1
rawRatio0
effectiveRatio0
95.75% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1176
totalAiIsmAdverbs1
found
0
adverb"really"
count1
highlights
0"really"
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)
82.99% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1176
totalAiIsms4
found
0
word"pulsed"
count1
1
word"comforting"
count1
2
word"weight"
count1
3
word"flickered"
count1
highlights
0"pulsed"
1"comforting"
2"weight"
3"flickered"
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
narrationSentences51
matches(empty)
86.83% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount1
narrationSentences51
filterMatches
0"think"
hedgeMatches
0"seemed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences52
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen68
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans1
markdownWords5
totalWords1188
ratio0.004
matches
0"you do not belong here."
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions7
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions20
wordCount1168
uniqueNames11
maxNameDensity0.43
worstName"Morris"
maxWindowNameDensity1.5
worstWindowName"Morris"
discoveredNames
Camden2
Harlow1
Quinn3
Morris5
October1
Tube2
Town1
Deep1
Line1
Underground1
London2
persons
0"Camden"
1"Harlow"
2"Quinn"
3"Morris"
4"Line"
places
0"October"
1"London"
globalScore1
windowScore1
0.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences40
glossingSentenceCount4
matches
0"quite work the way joints were supposed to"
1"something like a fiddle being tuned, and the"
2"colours that seemed to shift when she wasn't looking dead at them"
3"looked like living shadow, past a stall s"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.842
wordCount1188
matches
0"not brown or blue or green but a flat, depthless black, like looking into a well with no bo"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences52
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs18
mean66
std35.13
cv0.532
sampleLengths
092
1130
214
393
423
588
635
781
84
9108
10119
1165
1237
1337
1449
1575
1669
1769
70.86% Passive voice overuse
Target: ≤2% passive sentences
passiveCount5
totalSentences51
matches
0"were supposed"
1"been seen"
2"been closed"
3"being tuned"
4"been drawn"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount2
totalVerbs178
matches
0"wasn't looking"
1"was standing"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount12
semicolonCount0
flaggedSentences8
totalSentences52
ratio0.154
matches
0"He'd been seen near three break-ins tied to a string of thefts that made no sense — objects vanishing from locked cases, security footage showing empty rooms and then, impossibly, not-empty ones."
1"He vaulted a low fence with one hand, coat flaring like a wing, and dropped into the stairwell of a Tube station that had been closed for renovation — closed, according to every notice board she'd read, for the past six years."
2"This was not procedure, chasing a suspect alone into an abandoned Underground station at eleven at night with no radio contact because the radio had gone to static three streets back — the exact kind of static it had thrown the night she lost Morris, that white noise like the world clearing its throat before something happened."
3"She kept one hand on her weapon, more for her own comfort than any real faith it would help her here, and she went down into what had once been a Tube platform and was now — her mind kept trying to reject the sight even as her eyes insisted on it — a market."
4"A boy — or something with a boy's shape — hawked bundles of black feathers tied with red thread."
5"He turned and melted back into the crowd, and the crowd — she would swear to this later, in the report she would never actually file — the crowd closed around him like a curtain, like the market itself had decided to hide him from her."
6"She felt the weight of attention settle on her like a hand pressed flat between her shoulder blades, and every one of those eyes — human-shaped and not — told her the same thing without a word spoken: *you do not belong here.*"
7"She followed him into the dark, her weapon drawn, her heart going hard and fast against her ribs, and behind her the market's murmur closed up smooth and unbroken, as though she had never been there at all — as though the city above, the rain, the badge in her pocket, belonged to a version of London that no longer had any claim on where she was standing now."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1162
adjectiveStacks0
stackExamples(empty)
adverbCount34
adverbRatio0.029259896729776247
lyAdverbCount10
lyAdverbRatio0.008605851979345954
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences52
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences52
mean22.85
std17.52
cv0.767
sampleLengths
021
129
225
317
48
545
632
745
814
95
1042
115
122
1339
1423
1513
163
1757
189
196
206
2121
228
2334
2447
254
2631
274
2818
2955
3033
3121
3219
3314
3432
3557
362
376
3829
398
4023
4114
423
4346
4428
452
462
4743
483
4924
69.23% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats9
diversityRatio0.5192307692307693
totalSentences52
uniqueOpeners27
70.92% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount1
totalSentences47
matches
0"Somewhere ahead the suspect's grey"
ratio0.021
32.77% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount22
totalSentences47
matches
0"She'd make the joke to"
1"She didn't let herself think"
2"He'd been seen near three"
3"She'd been watching this alley"
4"she shouted, knowing he wouldn't,"
5"He didn't even glance back."
6"He vaulted a low fence"
7"She'd told herself for three"
8"She thought of Morris's face,"
9"She thought of eighteen years"
10"She went down anyway."
11"She kept one hand on"
12"Her suspect was forty feet"
13"It was not a comforting"
14"he said, and his voice"
15"she said, and her voice,"
16"He didn't stop."
17"He turned and melted back"
18"She pushed forward anyway, shouldering"
19"She felt the weight of"
ratio0.468
55.74% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount38
totalSentences47
matches
0"Rain came down in sheets"
1"Detective Harlow Quinn ran through"
2"She'd make the joke to"
3"She didn't let herself think"
4"He'd been seen near three"
5"She'd been watching this alley"
6"she shouted, knowing he wouldn't,"
7"He didn't even glance back."
8"He vaulted a low fence"
9"The Camden Town Deep Line."
10"Quinn stopped at the top"
11"Every instinct she'd built over"
12"This was not procedure, chasing"
13"She'd told herself for three"
14"Grief did strange things to"
15"She thought of Morris's face,"
16"She thought of eighteen years"
17"She went down anyway."
18"The stairs were slick with"
19"The orange light brightened."
ratio0.809
100.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount1
totalSentences47
matches
0"Now there was only the"
ratio0.021
0.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences31
technicalSentenceCount7
matches
0"Now there was only the man ahead of her, a lean shape in a long grey coat, weaving between shuttered market stalls with an agility that struck her as wrong some…"
1"He'd been seen near three break-ins tied to a string of thefts that made no sense — objects vanishing from locked cases, security footage showing empty rooms an…"
2"She'd been watching this alley for two nights running on nothing but instinct and the itch at the back of her neck that never really left her since the night Mo…"
3"He vaulted a low fence with one hand, coat flaring like a wing, and dropped into the stairwell of a Tube station that had been closed for renovation — closed, a…"
4"A woman with skin like polished slate sold jars of something that glowed faint green and pulsed slow as a heartbeat."
5"Somewhere ahead the suspect's grey coat flickered between two stalls and vanished around a corner where the platform gave way to old service tunnels, black-mout…"
6"She followed him into the dark, her weapon drawn, her heart going hard and fast against her ribs, and behind her the market's murmur closed up smooth and unbrok…"
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags3
uselessAdditionCount0
matches(empty)
0.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags3
fancyCount1
fancyTags
0"she shouted (shout)"
dialogueSentences4
tagDensity0.75
leniency1
rawRatio0.333
effectiveRatio0.333
78.8368%