Run: 2026-06-01-01KT1HANEEW5E1QQNSQDNV93Z5

Run Details

Duration:
46.5s
Cost:
$0.069450
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="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> Continue the story using the following instructions: <instructions> 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. </instructions>

Model response

AI
Rain slicked the cobblestones outside the abandoned Tube station, and Detective Harlow Quinn ducked under the strip of police tape that someone had strung across the boarded entrance. The wood had been pried loose. Forensics lamps threw a sickly white glow up the disused stairwell, and the smell hit her before she reached the bottom step—copper, mildew, and something sweeter beneath it that she couldn't name. "Mind the third step," called a voice from below. "It's rotted clean through." Quinn descended, one hand on the tiled wall. The tiles were Victorian, cream and oxblood, furred with grime. At the bottom, the old platform stretched into darkness, and in the centre of it a body lay face-down across the tracks. DC Reyes met her with a clipboard pressed to his chest. Young, eager, three years on the job and still believing every scene could be solved before the kettle boiled. "What've we got?" "Male, forties. No ID on him. Caretaker found the boards forced this morning and called it in." Reyes flipped a page. "Looks like a fall. He came down those stairs in the dark, lost his footing, cracked his head on the rail. Open and shut, if you ask me." Quinn crouched at the edge of the platform without answering. She pulled a pair of nitrile gloves from her coat pocket and snapped them on, her worn leather watch sliding against her wrist. "Time of death?" "Pathologist puts it around midnight. Hard to say in this cold." She studied the body. The man wore a good wool coat, sodden now, and one shoe. His skull had split above the left ear, and a dark halo had spread across the gravel beneath him. "You said he fell." "Down the stairs, yeah. Lost his balance—" "Then why's he twelve feet from the bottom of them?" She rose and walked the length of the platform, counting under her breath. "A man trips on a rotted step, he lands at the foot of it. He doesn't sail across a platform and tuck himself neatly between the rails." Reyes shifted his weight. "Could've stumbled forward. Momentum." "Momentum." Quinn knelt by the tracks again. "Bring that lamp closer." He dragged the tripod over, and the harsh light pooled across the gravel. She leaned in. The blood beneath the man's head was thick, congealing, exactly where it should be. But three feet to his left lay a second stain—smaller, a smeared comma against the stone, and around it the gravel had been disturbed, scuffed into furrows as though something had been dragged. "He bled here first," she said. "Then someone moved him." "Or he crawled." "With his skull caved in?" She glanced up. "Look at his hands." Reyes crouched beside her, frowning. The dead man's palms were clean. No grit driven into the heels, no torn nails, none of the desperate scrabbling a dying man left behind when he hauled himself across stone. "Maybe he died quick," Reyes offered. "Maybe the second stain's older. This place is a tip, Detective. People doss down here all the time." Quinn didn't reply. She'd learned long ago that the scene spoke if you let it, and right now it was lying to her—or someone had arranged it to. She stood and let her gaze travel the platform inch by inch. The lamps. The tiles. The old advertisements peeling from the curved wall, faces from a half-century gone smiling down at the dead. And there, on the wall above the second bloodstain, something caught the light. She crossed to it. A mark, scored into the tile at chest height, no bigger than her palm. Not graffiti. The lines were too deliberate, too clean, cut through the grime to the bright glaze beneath. A circle, broken at the top, with three strokes radiating from its centre like spokes that didn't quite reach the rim. "Reyes. You see this?" He came over, squinting. "Some kid's tag. Or a squatter marking territory." "It's fresh." She touched the edge of it, gloved fingertip coming away with a smear of tile dust. "Cut today. This week at most. The dust hasn't settled back into the grooves." Something cold turned over in her stomach, and she couldn't have said why. The mark meant nothing to her. And yet it pulled at the edge of a memory she'd spent three years trying not to look at directly—a different scene, a different night, DS Morris gone from a locked room with the door still bolted from the inside, and on the floor where he'd been standing a mark scratched into the boards that no one at the station could explain. They'd filed it under vandalism. They'd filed the whole thing under unsolved and stopped returning her calls. "Detective?" Reyes was watching her. "You all right?" "Photograph this. All of it. The mark, both stains, the drag furrows. And I want the gravel under him bagged separately from the gravel beside him." "That's a lot of paperwork for a fall." "It's not a fall." She turned back to the body. "Help me understand it, then. A man comes down here at midnight, into a sealed station, in a coat that costs more than your monthly wage. He's not a squatter. He's not lost—nobody wanders into a boarded Tube station by accident. He came for something. Or to meet someone." "There's no second set of prints." "No." That was the part that itched at her. The dust on the platform was undisturbed but for the furrows by the body. No footprints leading in. No footprints leading out. Even her own and Reyes's tracked clear behind them in the grime. "Which means whoever was here either never touched the ground, or knew exactly how to leave without a trace." She crouched once more and gently lifted the edge of the man's wool coat. His trouser pocket bulged. She slid two fingers inside and drew out the object resting there. A small brass compass, the casing green with verdigris, its face etched with markings that weren't north and south. Symbols. Sigils, ringed around the rim, and at the centre a needle that quivered, swung, and settled—pointing not at any pole, but directly at the broken circle scratched into the wall. "What is that?" Reyes leaned in. "I don't know." Quinn turned it over in her palm. The needle held steady, trembling toward the mark. When she shifted her hand the needle followed, refusing the magnetic north her instincts insisted it should find. "But he died holding it. And it's pointing at that symbol like it wants to get there." "Pointing's just metal and magnets, Detective. Means nothing." "Everything means something." She bagged the compass, sealed it, scrawled the time on the label with a pen that shook more than she liked. "A man comes here in the dark. Bleeds in one spot, ends up in another. No prints but his own. And he's carrying a compass that doesn't point north." She straightened, knees protesting, and fixed Reyes with a look that ended the conversation. "Tell me how that's open and shut." Reyes opened his mouth. Closed it. Quinn stood over the body a moment longer, the bagged compass cold through the glove in her hand, and let the platform finish speaking. The mark on the wall watched her back like an eye that had only just opened.
created_at"2026-06-01T12:07:54.069Z" 6/1/2026, 12:07:54 PM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3337
moderation_latency(null)
generation_time46443
tokens_prompt1149
tokens_completion1876
native_tokens_prompt1595
native_tokens_completion2459
native_tokens_completion_images(null)
native_tokens_reasoning58
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"
usage0.06945
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01NWG2eMfMCsfycDthakoKWu"
is_byokfalse
latency1111
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-1780315674-k6qDXt45uJbZcFFEMpD5"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780315674-1cfqBfLy58pYe8tcyKsC"
upstream_id"msg_01NWG2eMfMCsfycDthakoKWu"
total_cost0.06945
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
totalTags12
adverbTagCount1
adverbTags
0"She turned back [back]"
dialogueSentences41
tagDensity0.293
leniency0.585
rawRatio0.083
effectiveRatio0.049
95.94% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1231
totalAiIsmAdverbs1
found
0
adverb"gently"
count1
highlights
0"gently"
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)
79.69% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1231
totalAiIsms5
found
0
word"weight"
count1
1
word"stomach"
count1
2
word"etched"
count1
3
word"quivered"
count1
4
word"magnetic"
count1
highlights
0"weight"
1"stomach"
2"etched"
3"quivered"
4"magnetic"
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
narrationSentences70
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount0
narrationSentences70
filterMatches
0"watch"
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences96
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen63
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1225
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions12
unquotedAttributions0
matches(empty)
90.55% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions22
wordCount841
uniqueNames7
maxNameDensity1.19
worstName"Reyes"
maxWindowNameDensity2
worstWindowName"Reyes"
discoveredNames
Tube1
Detective1
Harlow1
Quinn7
Victorian1
Reyes10
Morris1
persons
0"Harlow"
1"Quinn"
2"Reyes"
3"Morris"
places(empty)
globalScore0.905
windowScore1
95.65% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences46
glossingSentenceCount1
matches
0"quite reach the rim"
36.73% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches2
per1kWords1.633
wordCount1225
matches
0"not at any pole, but directly at the broken circle scratched into the wall"
1"No prints but"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences96
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs42
mean29.17
std24.22
cv0.83
sampleLengths
066
113
240
330
43
549
633
73
811
935
104
117
1250
138
1411
1563
1610
173
1812
1936
2024
2162
2213
2357
244
2512
2632
2798
288
2926
308
3159
326
3362
3430
3550
366
3753
388
3974
406
4140
95.24% Passive voice overuse
Target: ≤2% passive sentences
passiveCount2
totalSentences70
matches
0"been pried"
1"been disturbed"
2"been dragged"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount2
totalVerbs143
matches
0"was lying"
1"was watching"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount5
semicolonCount0
flaggedSentences5
totalSentences96
ratio0.052
matches
0"Forensics lamps threw a sickly white glow up the disused stairwell, and the smell hit her before she reached the bottom step—copper, mildew, and something sweeter beneath it that she couldn't name."
1"But three feet to his left lay a second stain—smaller, a smeared comma against the stone, and around it the gravel had been disturbed, scuffed into furrows as though something had been dragged."
2"She'd learned long ago that the scene spoke if you let it, and right now it was lying to her—or someone had arranged it to."
3"And yet it pulled at the edge of a memory she'd spent three years trying not to look at directly—a different scene, a different night, DS Morris gone from a locked room with the door still bolted from the inside, and on the floor where he'd been standing a mark scratched into the boards that no one at the station could explain."
4"Sigils, ringed around the rim, and at the centre a needle that quivered, swung, and settled—pointing not at any pole, but directly at the broken circle scratched into the wall."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount848
adjectiveStacks0
stackExamples(empty)
adverbCount17
adverbRatio0.020047169811320754
lyAdverbCount7
lyAdverbRatio0.008254716981132075
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences96
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences96
mean12.76
std10.7
cv0.839
sampleLengths
028
16
232
39
44
58
610
722
811
919
103
1121
1228
1310
1423
153
1611
174
1812
1919
204
217
2223
2327
244
254
267
274
2813
293
3014
3133
326
334
343
358
364
375
386
3925
406
4118
423
4325
4412
452
462
4718
4813
494
84.03% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats6
diversityRatio0.5416666666666666
totalSentences96
uniqueOpeners52
52.91% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount1
totalSentences63
matches
0"Even her own and Reyes's"
ratio0.016
93.02% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount20
totalSentences63
matches
0"She pulled a pair of"
1"She studied the body."
2"His skull had split above"
3"She rose and walked the"
4"He dragged the tripod over,"
5"She leaned in."
6"She glanced up"
7"She'd learned long ago that"
8"She stood and let her"
9"She crossed to it."
10"He came over, squinting."
11"She touched the edge of"
12"They'd filed it under vandalism."
13"They'd filed the whole thing"
14"She turned back to the"
15"She crouched once more and"
16"His trouser pocket bulged."
17"She slid two fingers inside"
18"She bagged the compass, sealed"
19"She straightened, knees protesting, and"
ratio0.317
47.30% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount52
totalSentences63
matches
0"Rain slicked the cobblestones outside"
1"The wood had been pried"
2"Forensics lamps threw a sickly"
3"Quinn descended, one hand on"
4"The tiles were Victorian, cream"
5"DC Reyes met her with"
6"Reyes flipped a page"
7"Quinn crouched at the edge"
8"She pulled a pair of"
9"She studied the body."
10"The man wore a good"
11"His skull had split above"
12"She rose and walked the"
13"Reyes shifted his weight."
14"Quinn knelt by the tracks"
15"He dragged the tripod over,"
16"She leaned in."
17"The blood beneath the man's"
18"She glanced up"
19"Reyes crouched beside her, frowning."
ratio0.825
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences63
matches(empty)
ratio0
99.57% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences33
technicalSentenceCount2
matches
0"But three feet to his left lay a second stain—smaller, a smeared comma against the stone, and around it the gravel had been disturbed, scuffed into furrows as t…"
1"A small brass compass, the casing green with verdigris, its face etched with markings that weren't north and south."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags12
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags1
fancyCount0
fancyTags(empty)
dialogueSentences41
tagDensity0.024
leniency0.049
rawRatio0
effectiveRatio0
85.6875%