Run: 2026-05-31-01KSYXD8CTS6DHXDRT79Q9S13J

Run Details

Duration:
38.0s
Cost:
$0.061070
Provider:
Anthropic

Model input

System
You are an expert fiction writer. Always keep the following rules in mind: - Write in past tense and use General English spelling, grammar, and colloquialisms/slang. - Write in active voice - Always follow the "show, don't tell" principle. - Avoid adverbs and cliches and overused/commonly used phrases. Aim for fresh and original descriptions. - Convey events and story through dialogue. - Mix short, punchy sentences with long, descriptive ones. Drop fill words to add variety. - Skip "he/she said said" dialogue tags and convey people's actions or face expressions through their speech - Avoid mushy dialog and descriptions, have dialogue always continue the action, never stall or add unnecessary fluff. Vary the descriptions to not repeat yourself. - Put dialogue on its own paragraph to separate scene and action. - Reduce indicators of uncertainty like "trying" or "maybe" When writing text: - NEVER conclude the scene on your own, follow the beat instructions very closely. - NEVER end with foreshadowing. - NEVER write further than what I prompt you with. - AVOID imagining possible endings, NEVER deviate from the instructions. - STOP EARLY if the continuation contains what was required in the instructions. You do not need to fill out the full amount of words possible.
User/Human
Take into account the following glossary of characters/locations/items/lore... when writing your response: <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> Continue the story using the following instructions: <instructions> 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. </instructions>

Model response

AI
Rain came down in sheets across Camden High Street, turning the pavement into a black mirror that fractured every streetlight into a thousand splinters. Quinn ran through it with her coat plastered to her shoulders, her breath sawing in and out, her eyes fixed on the figure forty feet ahead. Herrera. She'd recognise that loping, uneven stride anywhere now. Three weeks of watching him, photographing him, building a file thick enough to choke a filing cabinet, and here he was, finally, doing the one thing she'd been waiting for. Running. "Herrera!" Her voice tore through the downpour. "Stop! Police!" He didn't stop. He glanced back once—a flash of olive skin and dark curls beneath a sodium lamp—and then cut left into a side street, the soles of his boots throwing up arcs of water. Quinn followed. Her watch slapped against her wrist as she pumped her arms, the worn leather strap soaked through. Eighteen years on the job and she still felt that old electric pull of the chase, the certainty that a man who ran was a man with something to hide. And Tomás Herrera had plenty. The side street narrowed into an alley, brick walls sweating in the rain, fire escapes dripping overhead. A bin clattered as Herrera shoved past it, and Quinn vaulted the spill of rubbish without breaking stride. He was fast. Younger than her by a decade, and built for it. But she knew these streets, knew the way they knotted and doubled back, knew that the alley ahead dead-ended against the old railway embankment. She had him. "Nowhere to go, Tommy," she shouted, closing the gap. "Make it easy on yourself." He reached the end of the alley. Where the wall should have stopped him, there was instead a gap—a black mouth in the brick where a maintenance gate hung open on rusted hinges. Beyond it, stairs descended into darkness, the kind of forgotten access tunnel that laced the underside of the whole city. Herrera paused at the threshold. He turned, and in the thin grey light his face wasn't defiant. It was something else. A warning. "Don't," he called back, rain streaming off his jaw. "Whatever you think is down there, you're wrong. Go home, Detective." "You don't get to tell me where to go." "Tonight I do." He touched something at his throat—a chain, a medallion that caught what little light there was. "This isn't your world. Turn around." Then he was gone, swallowed by the stairwell. Quinn reached the gate and stopped. The rain hammered the back of her neck. Cold air rose from the dark below, carrying a smell that didn't belong to any tunnel she'd ever stood at the top of—copper and smoke and something floral and rotten underneath, like flowers left too long in a vase. Every instinct she'd honed over eighteen years told her to call it in. To stand at the mouth of the hole and wait for backup, for lights, for the comfort of a radio crackling with familiar voices. That was procedure. That was how you stayed alive long enough to collect a pension. But there was no signal down here. She'd checked her phone twice already on the run, watched the bars die one by one the moment they'd left the high street. And if she waited, Herrera would vanish into whatever burrow the city kept hidden beneath Camden, and three weeks of work would dissolve like ink in the rain. Three years ago she'd let Morris go through a door alone. She'd stayed back. Played it safe, by the book, and the book had given her back a partner who never came home, a case file stamped with words that meant nothing—*unexplained, ongoing, inconclusive.* She still didn't understand what had taken him. She only understood that hesitation had a cost, and she'd been paying it ever since. Quinn drew her sidearm. Checked the load by feel. And stepped through the gate. The stairs went down further than they had any right to. The brick gave way to older stone, then to walls that weren't stone at all but something dark and fibrous, threaded with veins of faint blue light that pulsed like a slow heartbeat. She kept one hand against the wall and instantly regretted it; the surface was warm, almost soft, and it shifted under her palm as though breathing. She pulled her hand back and kept descending. Voices reached her before the light did. Not the echo of a Tube platform—a murmur of dozens, hundreds, a marketplace hum rising up the shaft. She came around a final curve and stopped dead. The platform of an abandoned station opened before her, but no train had run here in a century. Stalls crowded the length of it, lit by lanterns that burned colours she had no names for—a green that hurt her teeth, a violet that seemed to drink the shadows rather than push them back. Figures moved between the stalls. Some were people. Some only wore the shape of people, their outlines wrong, their joints bending in places that joints did not bend. A creature with too many fingers weighed out powdered something on a brass scale. A woman with no reflection in the cracked mirror behind her haggled over a jar of writhing light. Quinn's mouth went dry. Her training had no protocol for this. No chapter, no diagram, no flowchart. The gun in her hand felt suddenly small. A bone-white token rolled across the platform and stopped at her boot. She didn't see who'd thrown it. "You'll want that," said a voice beside her. She spun, weapon up, and found Herrera standing just out of reach, hands raised, the medallion glinting at his collarbone. "No entry without one. And no entry means they notice you. You really don't want to be noticed, Detective." "What is this place?" Her voice came out steadier than she felt. "The Veil Market." He lowered his hands, slow. "I told you to turn around. You should've listened. But you're here now, and standing still in a doorway is the most dangerous thing you can do." He nodded at the token by her foot. "Pick it up. Then walk with me, and try to look like you belong." Quinn looked at the crowd. At the impossible colours, the wrong bodies, the slow blue pulse in the walls. At Morris, three years gone, and the door she hadn't walked through. She bent, and picked up the token.
created_at"2026-05-31T11:41:18.632Z" 5/31/2026, 11:41:18 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2771
moderation_latency(null)
generation_time37913
tokens_prompt1140
tokens_completion1642
native_tokens_prompt1574
native_tokens_completion2128
native_tokens_completion_images(null)
native_tokens_reasoning61
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"
usage0.06107
router(null)
provider_responses
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endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01To9LmxCqRzGrZFEcLn6pJg"
is_byokfalse
latency1098
model_permaslug"anthropic/claude-4.8-opus-20260528"
provider_name"Anthropic"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.16.0; linux; x64))"
http_referer(null)
request_id"req-1780227678-R5W36ZpRtHkmRcDReSma"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780227678-hB3SnU2pvxZg7rCuQ6kV"
upstream_id"msg_01To9LmxCqRzGrZFEcLn6pJg"
total_cost0.06107
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags7
adverbTagCount0
adverbTags(empty)
dialogueSentences15
tagDensity0.467
leniency0.933
rawRatio0
effectiveRatio0
90.81% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1088
totalAiIsmAdverbs2
found
0
adverb"suddenly"
count1
1
adverb"really"
count1
highlights
0"suddenly"
1"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)
63.24% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1088
totalAiIsms8
found
0
word"fractured"
count1
1
word"electric"
count1
2
word"streaming"
count1
3
word"familiar"
count1
4
word"pulsed"
count1
5
word"echo"
count1
6
word"glinting"
count1
7
word"pulse"
count1
highlights
0"fractured"
1"electric"
2"streaming"
3"familiar"
4"pulsed"
5"echo"
6"glinting"
7"pulse"
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
narrationSentences76
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount1
narrationSentences76
filterMatches
0"watch"
hedgeMatches
0"seemed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences83
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen40
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans1
markdownWords3
totalWords1081
ratio0.003
matches
0"unexplained, ongoing, inconclusive."
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions6
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions21
wordCount969
uniqueNames8
maxNameDensity0.72
worstName"Quinn"
maxWindowNameDensity1.5
worstWindowName"Herrera"
discoveredNames
Camden2
High1
Street1
Tomás1
Herrera6
Quinn7
Morris2
Tube1
persons
0"Tomás"
1"Herrera"
2"Quinn"
3"Morris"
places
0"Camden"
1"High"
2"Street"
globalScore1
windowScore1
57.41% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences54
glossingSentenceCount2
matches
0"as though breathing"
1"violet that seemed to drink the shadows rather than push them back"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount1081
matches(empty)
46.18% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount3
totalSentences83
matches
0"knew that the"
1"understood that hesitation"
2"places that joints"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs30
mean36.03
std25.35
cv0.704
sampleLengths
050
140
29
335
454
572
63
714
853
923
1020
119
1225
138
1453
1552
1658
1767
1814
1970
208
2134
22113
2325
2418
2547
2612
2757
2831
297
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount1
totalSentences76
matches
0"was gone"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount1
totalVerbs170
matches
0"was, finally, doing"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount8
semicolonCount1
flaggedSentences8
totalSentences83
ratio0.096
matches
0"He glanced back once—a flash of olive skin and dark curls beneath a sodium lamp—and then cut left into a side street, the soles of his boots throwing up arcs of water."
1"Where the wall should have stopped him, there was instead a gap—a black mouth in the brick where a maintenance gate hung open on rusted hinges."
2"\"Tonight I do.\" He touched something at his throat—a chain, a medallion that caught what little light there was."
3"Cold air rose from the dark below, carrying a smell that didn't belong to any tunnel she'd ever stood at the top of—copper and smoke and something floral and rotten underneath, like flowers left too long in a vase."
4"Played it safe, by the book, and the book had given her back a partner who never came home, a case file stamped with words that meant nothing—*unexplained, ongoing, inconclusive.* She still didn't understand what had taken him."
5"She kept one hand against the wall and instantly regretted it; the surface was warm, almost soft, and it shifted under her palm as though breathing."
6"Not the echo of a Tube platform—a murmur of dozens, hundreds, a marketplace hum rising up the shaft."
7"Stalls crowded the length of it, lit by lanterns that burned colours she had no names for—a green that hurt her teeth, a violet that seemed to drink the shadows rather than push them back."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount978
adjectiveStacks0
stackExamples(empty)
adverbCount33
adverbRatio0.03374233128834356
lyAdverbCount5
lyAdverbRatio0.005112474437627812
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences83
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences83
mean13.02
std9.68
cv0.743
sampleLengths
024
126
21
38
430
51
67
72
83
932
102
1117
1230
135
1417
1518
163
1710
1824
193
209
215
227
2326
2420
255
2612
274
282
299
3011
319
3219
336
348
356
368
3739
3813
3924
403
4112
427
4323
4428
4511
463
4738
4815
494
75.90% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats7
diversityRatio0.5060240963855421
totalSentences83
uniqueOpeners42
46.30% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount1
totalSentences72
matches
0"Then he was gone, swallowed"
ratio0.014
75.56% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount26
totalSentences72
matches
0"She'd recognise that loping, uneven"
1"Her voice tore through the"
2"He didn't stop."
3"He glanced back once—a flash"
4"Her watch slapped against her"
5"He was fast."
6"She had him."
7"she shouted, closing the gap"
8"He reached the end of"
9"He turned, and in the"
10"It was something else."
11"he called back, rain streaming"
12"He touched something at his"
13"She'd checked her phone twice"
14"She'd stayed back."
15"She only understood that hesitation"
16"She kept one hand against"
17"She pulled her hand back"
18"She came around a final"
19"Her training had no protocol"
ratio0.361
100.00% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount51
totalSentences72
matches
0"Rain came down in sheets"
1"Quinn ran through it with"
2"She'd recognise that loping, uneven"
3"Her voice tore through the"
4"He didn't stop."
5"He glanced back once—a flash"
6"Her watch slapped against her"
7"The side street narrowed into"
8"A bin clattered as Herrera"
9"He was fast."
10"She had him."
11"she shouted, closing the gap"
12"He reached the end of"
13"Herrera paused at the threshold."
14"He turned, and in the"
15"It was something else."
16"he called back, rain streaming"
17"He touched something at his"
18"Quinn reached the gate and"
19"The rain hammered the back"
ratio0.708
69.44% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount1
totalSentences72
matches
0"To stand at the mouth"
ratio0.014
20.41% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences35
technicalSentenceCount6
matches
0"Eighteen years on the job and she still felt that old electric pull of the chase, the certainty that a man who ran was a man with something to hide."
1"Beyond it, stairs descended into darkness, the kind of forgotten access tunnel that laced the underside of the whole city."
2"Cold air rose from the dark below, carrying a smell that didn't belong to any tunnel she'd ever stood at the top of—copper and smoke and something floral and ro…"
3"Played it safe, by the book, and the book had given her back a partner who never came home, a case file stamped with words that meant nothing—*unexplained, ongo…"
4"The brick gave way to older stone, then to walls that weren't stone at all but something dark and fibrous, threaded with veins of faint blue light that pulsed l…"
5"She kept one hand against the wall and instantly regretted it; the surface was warm, almost soft, and it shifted under her palm as though breathing."
53.57% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags7
uselessAdditionCount1
matches
0"He lowered, slow"
16.67% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags2
fancyCount2
fancyTags
0"she shouted (shout)"
1"he called back (call back)"
dialogueSentences15
tagDensity0.133
leniency0.267
rawRatio1
effectiveRatio0.267
80.5161%