Run: 2026-10-06-01M48VXE9SQDV888KHMBD1ZKFV

Run Details

Duration:
26.1s
Cost:
$0.004985
Provider:
Mistral

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 abandoned Camden Town Tube station had been sealed since 1954, its platforms swallowed by darkness and the slow drip of groundwater. Detective Harlow Quinn descended the service stairs with the flat tread of a woman who had learned to trust nothing, her flashlight cutting a cone through the black. Behind her, the constable—some junior officer named Parkins, she thought, though she hadn't bothered to remember—fumbled with his own torch, its beam jittering across the tiled walls like a frightened animal. She had come here on a tip. An anonymous call, voice modulated through three layers of static, reporting a body in a place that officially didn't exist. Quinn had spent eighteen years learning which calls to trust, and this one had carried the particular frequency of someone who knew too much and feared too little. The platform stretched before them, a cathedral of decay. Victorian tiles, cream and forest green, still clung to the walls in patches. A rusted bench sagged against the far wall. And in the center of the platform, where the tracks had once run, something had been arranged with deliberate care. Quinn approached slowly, her boots finding purchase on the gravel and detritus that carpeted the rails. The body was a woman, mid-thirties, dressed in a charcoal coat that had once been expensive. Her throat had been opened with surgical precision, and the blood—so much blood—had pooled in the depression between the tracks, dark and still in the flashlight's glow. But it was the arrangement that stopped Quinn's breath. The woman's hands were folded across her chest, palms up, in the posture of prayer. Around her, at precise intervals, stood seven candles. Not wax candles—these were black, tapered, and they burned with a flame that cast no heat, only a faint violet luminescence that made the tiles seem to breathe. Quinn had seen photographs of such flames in case files she wasn't supposed to have access to, files that had been sealed after her partner's death. "Detective." Parkins's voice cracked. "Should we—should we call for the coroner? And perhaps a priest?" Quinn didn't answer. She was moving, circling, her eyes cataloging. The candles were placed at the points of a heptagram, though she couldn't see the connecting lines. The woman's eyes were open, fixed on the tunnel's mouth, and something about their expression—not fear, not peace, but recognition—made Quinn's skin tighten. She knelt, ignoring Parkins's protest, and examined the throat wound. Clean. Professional. The kind of cut that required a scalpel and a steady hand, or something that passed for both. No defensive wounds. No struggle. The woman had been killed elsewhere and placed here, or killed here with her full cooperation. "She's been dead approximately six hours," Quinn said, not looking up. "Core temperature, lividity. The candles were lit after death—see how the wax hasn't melted? These are ceremonial, not practical." "Ceremonial," Parkins repeated, as if tasting the word. Quinn stood, her knees popping, and turned to survey the platform more fully. Her flashlight caught something that made her freeze. On the wall, scratched into the grime above the tiles, a symbol. Not fresh—the scratches were old, filled with the same mineral deposits that coated everything in this place. But deliberate. A circle, bisected by a vertical line, with seven smaller circles arranged around the perimeter. The same heptagram. The same seven points. "Detective." Parkins had moved closer, his torch illuminating the symbol from below, casting his own face in grotesque shadow. "I've seen something like this. In my grandmother's village. She said—" He stopped, shook his head. "She said it was for calling. For opening doors that shouldn't be opened." Quinn felt the familiar coldness settle behind her sternum, the sensation she'd learned to recognize since Morris's death. The supernatural, when it announced itself, always carried this particular temperature, as if the air itself had been drawn from a deeper place. She thought of the case files, the sealed reports, the way her superiors had looked at her when she'd asked questions about DS Morris's final case. The way they'd suggested, with infinite gentleness, that grief had affected her judgment. "Parkins," she said carefully. "When you processed the scene, did you touch anything? The body, the candles, anything on the platform?" He paled. "I—I checked for identification. Her pockets. I didn't think—" "Did you feel anything? Cold? Wrongness? Any sensation at all?" Parkins was quiet for a long moment. Then: "My watch stopped. At 3:47. I thought it was the battery, but I checked it in the car. It's still stopped. Detective, what is this place?" Quinn didn't answer. She was looking at the body again, at the woman's folded hands, and she saw what she'd missed. Between the fingers, barely visible in the violet light, a small object. Brass, circular, about the size of a coin. She retrieved her evidence kit with hands that had steadied themselves through eighteen years of worse things than this. The object came free easily, and she held it to her flashlight's beam. A compass. Small, palm-sized, its casing green with verdigris. The face was etched with protective sigils—she recognized the pattern, the interlocking triangles and circles that appeared in every culture's attempt to ward off what dwelt in the dark. And the needle, impossibly, was moving. Not pointing north. Pointing down, toward the tracks, toward the black pool of blood that had begun to steam in the violet light. "The Veil Compass," she whispered, though she didn't know how she knew the name. "Shade artisan work. It points toward rifts. Toward places where the world is thin." Parkins had gone very still. "Detective, I think we should leave. Now. Whatever this is, whatever's been done here, I don't think it's finished." Quinn pocketed the compass—evidence, though she doubted any chain of custody would survive what came next—and turned toward the stairs. But the darkness at the tunnel's mouth had shifted. The black there was no longer absence of light but presence of something else, something that pressed against the edges of her vision and made her watch—her worn leather watch, the one she'd inherited from Morris—begin to tick backward. She checked it. The hands were moving in reverse, and the leather strap, which had been supple and warm against her wrist, had grown cold. Icy cold. "Quinn." Parkins's voice came from far away, or perhaps from very close. "Detective Quinn, I can't see you. I can't—" The violet flames guttered. In their dying light, Quinn saw the woman's body begin to move, the folded hands unfolding, the head turning to track her movement with the smooth, jointless motion of something that had never been alive. And in the woman's open eyes, she saw her own reflection—not as she was, but as she might be. Older. Harder. Wearing a uniform that didn't exist, standing in a courtroom that had no walls, passing judgment on crimes that hadn't been committed yet. The last flame died. Quinn ran. Her boots found the stairs, her hand closed on the rusted railing, and she climbed with the desperate strength of a woman who had faced death before and refused to meet it on its own terms. Behind her, the platform fell silent, the body still, the candles cold and black and utterly spent. But she felt it watching. Felt the weight of attention, ancient and patient and utterly inhuman, settling over the station like a second darkness. She emerged into Camden's morning, gasping, her flashlight still clutched in one hand and the compass burning cold against her thigh through the fabric of her pocket. The market was opening, tourists and locals mingling in the square above, the ordinary world turning its ordinary wheel. Quinn leaned against a shuttered shop front and forced herself to breathe, to count, to remember that she was Harlow Quinn, Metropolitan Police, eighteen years of service, and that she had survived worse than this. Her watch ticked forward again. She checked the time. 6:47 AM. She had been below for eleven minutes. Eleven minutes. The body had been dead for six hours. Quinn straightened, adjusted her collar with military precision, and walked toward the nearest Tube entrance. She had a call to make. She had questions that would get her suspended, dismissed, perhaps arrested. She had a compass in her pocket that pointed toward things she wasn't certain she wanted to find. But she had also survived the death of her partner, and the silence that followed, and the careful, systematic dismantling of her belief in the world as it presented itself. She would survive this too. The Veil Market moved on the full moon. She had twenty-three days to find out what had been done in that station, and why. Twenty-three days to understand what kind of door had been opened, and whether it could be closed. Quinn touched the compass through her pocket, feeling its cold pulse against her thigh like a second heartbeat, and began to walk toward the station she knew, the one that led down to answers she wasn't sure she wanted. Behind her, in the abandoned Camden Town Tube station, something stirred in the dark. Something that had been waiting, patient and hungry, for a very long time. And now, thanks to seven candles and a woman's willing death and a detective's unfortunate curiosity, it had finally been given a name. Hers.
created_at"2026-10-06T15:04:34.367Z" 10/6/2026, 3:04:34 PM
model"mistralai/mistral-large-4-0-20261006"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency642
moderation_latency(null)
generation_time26083
tokens_prompt896
tokens_completion2404
native_tokens_prompt870
native_tokens_completion2102
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"stop"
service_tier"default"
usage0.00498478
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791299074-5Bfm6ggxKfcCkIJFG1Dl"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791299074-Y7McW8NBBlzpBFbpEG0l"
upstream_id"4660d8f9f6e84ec28a44257114c3ab9e"
provider_responses
0
endpoint_id"540e63db-cc7c-4556-bb67-d449579bcf1a"
id"4660d8f9f6e84ec28a44257114c3ab9e"
is_byokfalse
latency642
model_permaslug"mistralai/mistral-large-4-0-20261006"
provider_name"Mistral"
status200
total_cost0.00498478
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
88.89% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags8
adverbTagCount1
adverbTags
0"she said carefully [carefully]"
dialogueSentences18
tagDensity0.444
leniency0.889
rawRatio0.125
effectiveRatio0.111
77.82% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1578
totalAiIsmAdverbs7
found
0
adverb"slowly"
count1
1
adverb"carefully"
count1
2
adverb"very"
count3
3
adverb"utterly"
count2
highlights
0"slowly"
1"carefully"
2"very"
3"utterly"
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)
77.82% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1578
totalAiIsms7
found
0
word"familiar"
count1
1
word"processed"
count1
2
word"etched"
count1
3
word"weight"
count1
4
word"silence"
count1
5
word"systematic"
count1
6
word"pulse"
count1
highlights
0"familiar"
1"processed"
2"etched"
3"weight"
4"silence"
5"systematic"
6"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
narrationSentences106
matches(empty)
48.52% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount3
hedgeCount4
narrationSentences106
filterMatches
0"watch—watch"
1"watch"
hedgeMatches
0"seem to"
1"begin to"
2"began to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences115
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen41
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1561
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions13
unquotedAttributions0
matches(empty)
66.67% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions43
wordCount1390
uniqueNames11
maxNameDensity1.29
worstName"Quinn"
maxWindowNameDensity3
worstWindowName"Quinn"
discoveredNames
Camden3
Town2
Tube3
Harlow2
Quinn18
Parkins8
Morris3
Metropolitan1
Police1
Veil1
Market1
persons
0"Harlow"
1"Quinn"
2"Parkins"
3"Morris"
4"Market"
places
0"Camden"
1"Town"
2"Tube"
globalScore0.853
windowScore0.667
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences74
glossingSentenceCount1
matches
0"as if tasting the word"
0.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches4
per1kWords2.562
wordCount1561
matches
0"not fear, not peace, but recognition"
1"not peace, but recognition"
2"no longer absence of light but"
3"not as she was, but as she might be"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences115
matches
0"remember that she"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs40
mean39.03
std25.28
cv0.648
sampleLengths
081
155
250
359
49
577
615
750
851
930
108
1167
127
1348
1480
1521
1611
1710
1834
1941
2032
2167
2228
2324
2468
2527
2620
2783
284
292
3077
3181
3218
3310
3450
3535
3641
3739
3850
391
65.54% Passive voice overuse
Target: ≤2% passive sentences
passiveCount12
totalSentences106
matches
0"been sealed"
1"been arranged"
2"been opened"
3"were folded"
4"been sealed"
5"were placed"
6"been killed"
7"been drawn"
8"was etched"
9"been committed"
10"been opened"
11"been given"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount3
totalVerbs236
matches
0"was looking"
1"were moving"
2"was opening"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount14
semicolonCount0
flaggedSentences9
totalSentences115
ratio0.078
matches
0"Behind her, the constable—some junior officer named Parkins, she thought, though she hadn't bothered to remember—fumbled with his own torch, its beam jittering across the tiled walls like a frightened animal."
1"Her throat had been opened with surgical precision, and the blood—so much blood—had pooled in the depression between the tracks, dark and still in the flashlight's glow."
2"Not wax candles—these were black, tapered, and they burned with a flame that cast no heat, only a faint violet luminescence that made the tiles seem to breathe."
3"The woman's eyes were open, fixed on the tunnel's mouth, and something about their expression—not fear, not peace, but recognition—made Quinn's skin tighten."
4"Not fresh—the scratches were old, filled with the same mineral deposits that coated everything in this place."
5"The face was etched with protective sigils—she recognized the pattern, the interlocking triangles and circles that appeared in every culture's attempt to ward off what dwelt in the dark."
6"Quinn pocketed the compass—evidence, though she doubted any chain of custody would survive what came next—and turned toward the stairs."
7"The black there was no longer absence of light but presence of something else, something that pressed against the edges of her vision and made her watch—her worn leather watch, the one she'd inherited from Morris—begin to tick backward."
8"And in the woman's open eyes, she saw her own reflection—not as she was, but as she might be."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1408
adjectiveStacks0
stackExamples(empty)
adverbCount36
adverbRatio0.02556818181818182
lyAdverbCount11
lyAdverbRatio0.0078125
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences115
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences115
mean13.57
std9.39
cv0.692
sampleLengths
022
128
231
37
420
528
69
713
88
920
1016
1116
1227
139
1415
158
1628
1726
184
1911
203
217
2217
2323
2410
251
261
2718
283
292
3016
3111
3219
338
3413
358
3612
3717
382
3915
403
414
4219
4316
4413
4518
4623
4726
4813
494
56.52% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats5
diversityRatio0.3652173913043478
totalSentences115
uniqueOpeners42
0.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount0
totalSentences92
matches(empty)
ratio0
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount22
totalSentences92
matches
0"She had come here on"
1"Her throat had been opened"
2"She was moving, circling, her"
3"She knelt, ignoring Parkins's protest,"
4"Her flashlight caught something that"
5"He stopped, shook his head"
6"She thought of the case"
7"she said carefully"
8"She was looking at the"
9"She retrieved her evidence kit"
10"she whispered, though she didn't"
11"She checked it."
12"Her boots found the stairs,"
13"She emerged into Camden's morning,"
14"Her watch ticked forward again."
15"She checked the time."
16"She had been below for"
17"She had a call to"
18"She had questions that would"
19"She had a compass in"
ratio0.239
90.43% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount68
totalSentences92
matches
0"The abandoned Camden Town Tube"
1"Detective Harlow Quinn descended the"
2"She had come here on"
3"An anonymous call, voice modulated"
4"Quinn had spent eighteen years"
5"The platform stretched before them,"
6"Victorian tiles, cream and forest"
7"A rusted bench sagged against"
8"Quinn approached slowly, her boots"
9"The body was a woman,"
10"Her throat had been opened"
11"The woman's hands were folded"
12"Quinn had seen photographs of"
13"Parkins's voice cracked"
14"Quinn didn't answer."
15"She was moving, circling, her"
16"The candles were placed at"
17"The woman's eyes were open,"
18"She knelt, ignoring Parkins's protest,"
19"The kind of cut that"
ratio0.739
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences92
matches(empty)
ratio0
0.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences54
technicalSentenceCount14
matches
0"Detective Harlow Quinn descended the service stairs with the flat tread of a woman who had learned to trust nothing, her flashlight cutting a cone through the b…"
1"Quinn had spent eighteen years learning which calls to trust, and this one had carried the particular frequency of someone who knew too much and feared too litt…"
2"Quinn approached slowly, her boots finding purchase on the gravel and detritus that carpeted the rails."
3"The body was a woman, mid-thirties, dressed in a charcoal coat that had once been expensive."
4"The supernatural, when it announced itself, always carried this particular temperature, as if the air itself had been drawn from a deeper place."
5"She retrieved her evidence kit with hands that had steadied themselves through eighteen years of worse things than this."
6"The hands were moving in reverse, and the leather strap, which had been supple and warm against her wrist, had grown cold."
7"In their dying light, Quinn saw the woman's body begin to move, the folded hands unfolding, the head turning to track her movement with the smooth, jointless mo…"
8"Wearing a uniform that didn't exist, standing in a courtroom that had no walls, passing judgment on crimes that hadn't been committed yet."
9"Her boots found the stairs, her hand closed on the rusted railing, and she climbed with the desperate strength of a woman who had faced death before and refused…"
10"She emerged into Camden's morning, gasping, her flashlight still clutched in one hand and the compass burning cold against her thigh through the fabric of her p…"
11"She had questions that would get her suspended, dismissed, perhaps arrested."
12"But she had also survived the death of her partner, and the silence that followed, and the careful, systematic dismantling of her belief in the world as it pres…"
13"Something that had been waiting, patient and hungry, for a very long time."
0.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags8
uselessAdditionCount2
matches
0"Quinn said, not looking up"
1"Parkins repeated, as if tasting the word"
38.89% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags4
fancyCount2
fancyTags
0"Parkins repeated (repeat)"
1"she whispered (whisper)"
dialogueSentences18
tagDensity0.222
leniency0.444
rawRatio0.5
effectiveRatio0.222
70.3700%