Run: 2026-10-08-01M4DA4XAYP32ESNQPRYD7X9XW

Run Details

Duration:
17.4s
Cost:
$0.001378
Provider:
Claude Platform on AWS

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 disused platform beneath Camden smelled of wet brick and something sweeter underneath, like lilies left too long in a vase. Harlow Quinn paused at the bottom of the iron stairs and let her eyes adjust to the sodium glare of the work lamps. The tiles were the colour of weak tea. Someone had painted a station name over the arch decades ago, and the paint had flaked away until only the letters *ALL* remained. "Ma'am." Detective Constable Pryce came down the platform toward her, his torch swinging. He was twenty-nine, earnest, and had the look of a man who had been awake since four. "Didn't expect you until the morning." "I was up." She did not explain that she had not been asleep. "Talk to me." "Male, mid-thirties, found by a pair of urban explorers just after eleven. Fell from the upper gallery, by the look of it." He lifted his torch toward the far end, where a rusted maintenance ladder hung from a ceiling hatch. "Broke his neck on the rails. Coroner's van's on its way. Honestly, ma'am, it's a bad idea to come down here in the dark. The lads say the tunnels flood with no warning." Quinn walked past him without answering. The body lay on its back between the tracks, one arm flung out, the other folded across its chest in a way that struck her as too neat. A man's face, eyes half open. A good wool coat, damp at the hem. No blood on the rails. No blood on the platform edge. She crouched, keeping her knees together, and studied the head angle. "Whose ladder is that?" she asked. "Probably the explorers'. Or the council's, from the eighties." "The explorers said they came in through the hatch?" "Through the old service shaft, I think. I haven't got the full statement." "Get it." She stood, her left wrist brushing her hip, and the worn leather strap of her watch creaked. The watch read twenty past one. She had checked it a dozen times since midnight and it had not moved to anything she could not account for. "Pryce, what time did you say the fall happened?" "Coroner will tell us better, but rigor's just setting in. Eight, nine hours maybe." "Then he died before the rain started." She pointed the torch at the dust along the platform edge. A thin grey film lay across the concrete, unbroken except for a single narrow track of fresh shoe prints that led from the stairs to the body. "Those are his, I assume. Come in this way, walked to the edge, and went over." "Right." "Then tell me why his shoes are dry." Pryce frowned and looked down. The leather was pale with dust, not a trace of the grey sludge that coated the lower tunnel floor, where the water had been ankle-deep when she came in. "Maybe he came in from the other side, ma'am. Through the service shaft. It's higher up." "Maybe." Quinn moved along the wall, her torch low. The tiles were streaked with old damp, and in one place a row of smudges ran from the arch to the edge of the platform, as though something heavy had been slid along the surface. It did not look like a fall. It looked like a man being carried, or dragged, by someone who had not wanted to stain their own boots. "How many officers have been down here since eleven?" "Two of us, plus the explorers. They were in a state, ma'am. One of them was sick by the stairs." "Then nobody has touched the far end of the platform." "No, ma'am." She went there anyway. The arch at the north end had been bricked up, the mortar recent, grey and crumbling at the joints in the way that new mortar does when it has been struck with something too hard. Someone had scratched a spiral into the surface, three inches across, the lines so fine she had to tilt her head to see them. Her attention snagged on the dead man's coat, which Pryce had left folded on a crate. A small brass object had fallen half out of the inside pocket. She knelt and lifted it with a gloved hand. A compass, the casing dull and crusted with verdigris, the face crowded with tiny etched sigils she did not recognise. The needle was not still. It trembled, swung, and settled, pointing with quiet certainty at the bricked arch. "Pryce." Her voice came out level, which pleased her. "Did you know about this?" He came over, peering. "Is that a compass? Antique shop, probably. Some of these old boys collect bits of junk." "It's pointing at the wall." "Magnets in the rail, maybe. Or the brickwork's got iron in it." "Maybe." She turned the compass over, feeling the cold weight of it. Three years ago Michael Morris had stood in a room not unlike this one, insisting on a reading that the forensic team had dismissed, and two weeks later he had walked into the river at Westminster with no memory of why. She had signed the file herself. She had told herself it was grief that had made him see things. She had believed it, because believing it was easier than the alternative. "Ma'am?" Pryce said. "You've gone quiet." "Bag the compass. Carefully. Don't let it touch your skin." She set the torch on the crate and rose. "And get me someone from the Met's photography unit, and a forensic team that isn't afraid of the dark. I want the bricks taken down in sections and every joint sampled. I want the explorers' statements, and I want to know who owns this ladder and who else has a key to this shaft." "Yes, ma'am. Do you think it was foul play?" Quinn looked at the dead man's dry shoes, at the spiral scratched into new mortar, at the needle still trembling toward the arch like a dog straining at a lead. "I think," she said, "that somebody went to a great deal of trouble to make this look like an accident. And I think they forgot to take the compass."
created_at"2026-10-08T08:30:16.933Z" 10/8/2026, 8:30:16 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency17391
moderation_latency(null)
generation_time17391
tokens_prompt896
tokens_completion1418
native_tokens_prompt1287
native_tokens_completion2498
native_tokens_completion_images(null)
native_tokens_reasoning598
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"
usage0.0013777
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791448216-wNbFbTnAI75UzHATlfsz"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791448216-ncSD2FDGIrbHxMurT5S4"
upstream_id"msg_011CfpTTTaThMWv6VBY3h8ef"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpTTTaThMWv6VBY3h8ef"
is_byokfalse
latency718
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0013777
cache_discount(null)
upstream_inference_cost0
provider_name"Claude Platform on AWS"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags12
adverbTagCount0
adverbTags(empty)
dialogueSentences35
tagDensity0.343
leniency0.686
rawRatio0
effectiveRatio0
95.14% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1028
totalAiIsmAdverbs1
found
0
adverb"carefully"
count1
highlights
0"carefully"
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)
85.41% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1028
totalAiIsms3
found
0
word"etched"
count1
1
word"trembled"
count1
2
word"weight"
count1
highlights
0"etched"
1"trembled"
2"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
narrationSentences47
matches(empty)
82.07% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount2
hedgeCount0
narrationSentences47
filterMatches
0"watch"
1"see"
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences70
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen54
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans1
markdownWords1
totalWords1028
ratio0.001
matches
0"ALL"
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions9
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions14
wordCount666
uniqueNames8
maxNameDensity0.6
worstName"Quinn"
maxWindowNameDensity1
worstWindowName"Quinn"
discoveredNames
Camden1
Quinn4
Constable1
Pryce4
Three1
Michael1
Morris1
Westminster1
persons
0"Camden"
1"Quinn"
2"Pryce"
3"Michael"
4"Morris"
places
0"Westminster"
globalScore1
windowScore1
85.90% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences39
glossingSentenceCount1
matches
0"looked like a man being carried, or dragg"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount1028
matches(empty)
71.43% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount2
totalSentences70
matches
0"explain that she"
1"reading that the"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs31
mean33.16
std28.23
cv0.851
sampleLengths
075
136
216
373
470
56
69
79
813
955
1014
1161
121
138
1450
1580
1620
1710
182
1963
2075
2114
2220
235
2412
2584
266
2773
289
2930
3029
82.87% Passive voice overuse
Target: ≤2% passive sentences
passiveCount3
totalSentences47
matches
0"were streaked"
1"been slid"
2"being carried"
3"been bricked"
4"been struck"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount0
totalVerbs114
matches(empty)
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount0
semicolonCount0
flaggedSentences0
totalSentences70
ratio0
matches(empty)
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount668
adjectiveStacks0
stackExamples(empty)
adverbCount12
adverbRatio0.017964071856287425
lyAdverbCount1
lyAdverbRatio0.0014970059880239522
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences70
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences70
mean14.69
std10.68
cv0.727
sampleLengths
021
123
28
323
413
517
66
713
83
940
1033
116
1228
136
148
155
166
1711
186
199
209
2113
2219
236
2421
259
2614
2718
2827
2916
301
318
325
3329
3416
359
3635
377
3820
399
4020
4110
422
434
4435
4524
4616
4712
489
4920
77.14% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats6
diversityRatio0.5142857142857142
totalSentences70
uniqueOpeners36
0.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount0
totalSentences44
matches(empty)
ratio0
38.18% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount20
totalSentences44
matches
0"He was twenty-nine, earnest, and"
1"She did not explain that"
2"He lifted his torch toward"
3"She crouched, keeping her knees"
4"She stood, her left wrist"
5"She had checked it a"
6"She pointed the torch at"
7"It did not look like"
8"It looked like a man"
9"She went there anyway."
10"Her attention snagged on the"
11"She knelt and lifted it"
12"It trembled, swung, and settled,"
13"Her voice came out level,"
14"He came over, peering."
15"She turned the compass over,"
16"She had signed the file"
17"She had told herself it"
18"She had believed it, because"
19"She set the torch on"
ratio0.455
0.00% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount41
totalSentences44
matches
0"The disused platform beneath Camden"
1"Harlow Quinn paused at the"
2"The tiles were the colour"
3"Someone had painted a station"
4"Detective Constable Pryce came down"
5"He was twenty-nine, earnest, and"
6"She did not explain that"
7"He lifted his torch toward"
8"Quinn walked past him without"
9"The body lay on its"
10"A man's face, eyes half"
11"A good wool coat, damp"
12"She crouched, keeping her knees"
13"She stood, her left wrist"
14"The watch read twenty past"
15"She had checked it a"
16"She pointed the torch at"
17"A thin grey film lay"
18"Pryce frowned and looked down."
19"The leather was pale with"
ratio0.932
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences44
matches(empty)
ratio0
6.80% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences21
technicalSentenceCount4
matches
0"He was twenty-nine, earnest, and had the look of a man who had been awake since four."
1"The leather was pale with dust, not a trace of the grey sludge that coated the lower tunnel floor, where the water had been ankle-deep when she came in."
2"The tiles were streaked with old damp, and in one place a row of smudges ran from the arch to the edge of the platform, as though something heavy had been slid …"
3"She had told herself it was grief that had made him see things."
41.67% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags12
uselessAdditionCount2
matches
0"Detective Constable Pryce came, his torch swinging"
1"Quinn moved along, her torch low"
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags3
fancyCount0
fancyTags(empty)
dialogueSentences35
tagDensity0.086
leniency0.171
rawRatio0
effectiveRatio0
78.8866%