Run: 2026-02-20-01KHXPC7ZG2B3FK4PTB44J8E9Y

Run Details

Duration:
30.9s
Cost:
$0.003716
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 Tube station reeked of damp concrete and something older, something that clung to the back of the throat like rust. Detective Harlow Quinn stepped over the police tape, her boots scuffing against the gritty floor, each step measured, deliberate. The beam of her torch cut through the gloom, illuminating the graffiti-scarred walls—tags in languages she didn’t recognize, symbols that made her fingers twitch toward the cross at her throat. Not out of faith. Out of habit. “You’re late.” The voice belonged to PC Lin, a fresh-faced constable with a clipboard hugged to his chest like a shield. His torch wobbled, casting jagged shadows. “Forensics have been and gone. Said it’s all yours.” Harlow didn’t answer. She never did when the obvious didn’t warrant it. Instead, she let her gaze rake over the scene. The platform was empty save for a single object: a small brass compass, its casing etched with sigils that looked like they’d been scratched by a trembling hand. The needle didn’t point north. It pointed *down*, toward the tracks, where the rails vanished into a darkness so absolute it seemed to swallow the light. She crouched, gloved fingers hovering over the compass without touching it. The verdigris patina was unmistakable—old, but not antique. Used. The sigils weren’t decorative. They were functional. She’d seen enough occult nonsense in the last three years to recognize the stink of it. “What’s the official line?” she asked, voice low. Lin flipped a page on his clipboard. “Vandalism. Kids breaking in, messing around. The compass? Probably stolen. Some goth’s idea of a joke.” Harlow exhaled through her nose. “And unofficially?” The constable hesitated. “Unofficially? The forensics team wouldn’t go near the tracks. Said the air down there… *felt* wrong. Like static. One of ‘em swore his torch died for ten seconds, even with fresh batteries.” He lowered his voice. “And the compass? It wasn’t here when they first swept the platform. Just… appeared.” Harlow’s jaw tightened. She reached into her coat, pulled out a evidence bag, and carefully plucked the compass from the ground. The moment her fingers brushed the brass, a chill ran up her arm—not the cold of the station, but something deeper, like the memory of ice on bare skin. The needle twitched. Not toward the tracks now. Toward *her*. “Detective?” She ignored Lin, turning the compass over in her palm. The sigils pulsed faintly under her torchlight, as if reacting to her presence. Or her *attention*. Three years ago, she’d watched her partner, DS Morris, walk into a warehouse on a tip about a drug ring and never walk out. The security footage had shown nothing—just Morris stepping into a patch of shadow and vanishing. The case file was still open on her desk, a paperweight holding down the unsolved. But she’d seen the way the other detectives looked at her when she brought it up. The way their eyes flickered toward the cross at her throat, the way they whispered *conspiracy theorist* behind her back. This wasn’t vandalism. This was a *marker*. “Lin,” she said, standing abruptly. “Get me the CCTV footage from the last seventy-two hours. Not just this station—*all* the stations within a half-mile radius. And I want a list of every reported break-in, power outage, or *unexplained phenomenon* in the area for the last month.” Lin blinked. “Uh. Yes, ma’am. But—” “But nothing.” She pocketed the compass, the weight of it settling against her hip like a promise. “And Lin? Don’t mention the compass to anyone. Not yet.” She didn’t wait for an answer. The tracks called to her, that unnatural dark pulling at something deep in her chest—the same instinct that had made her trust Morris when he’d laughed off her concerns about the warehouse, the same instinct that had failed her when it mattered. She stepped onto the rails, torch beam slicing through the gloom. The air thickened the farther she went, pressing against her skin like damp wool. The temperature dropped. Her breath fogged. Then she saw it. Not a body. Not blood. But a *symbol*, carved into the wall at eye level—a circle bisected by a jagged line, the same mark she’d found scrawled in Morris’s notebook the night he disappeared. Her torchlight wavered. The symbol seemed to *breathe*, the edges shimmering like heat haze. A sound echoed behind her—the scuff of a shoe on concrete. She spun, hand going to her sidearm, but it was just Lin, his face pale. “Detective, you—you shouldn’t be down here. The forensics team said—” “I don’t give a damn what they said.” Her voice was steel. “This isn’t kids messing around. This is a *gate*.” Lin’s Adam’s apple bobbed. “A… what?” She didn’t answer. She didn’t know how. Three years of chasing ghosts, and she still didn’t have the words. But the compass in her pocket grew heavier, the needle spinning wildly now, as if sensing her proximity to something vast and hungry. A whisper slithered through the dark. Not a voice—*voices*, layered, distorted, like a radio tuned between stations. Harlow’s fingers tightened around her torch. The beam flickered. For a heartbeat, the darkness *moved*, coalescing into shapes—tall, slender figures with limbs too long, their edges blurring into the black. Then the torch steadied, and they were gone. But the cold remained. And the symbol on the wall *glowed*. Lin made a choked sound. “We need to leave. *Now*.” Harlow didn’t argue. She backed up slowly, eyes locked on the symbol, on the shifting dark. Her boot caught on a rail. She stumbled, and for a second, the torchlight swung wild, illuminating a stretch of wall she hadn’t noticed before. Words. Carved into the concrete in a script that made her eyes ache, the letters too sharp, too *wrong*. She squinted, forcing her brain to parse them: **THE VEIL THINS AT MIDNIGHT.** Her blood turned to ice. Midnight was in six hours. She grabbed Lin’s arm and hauled him toward the platform. “Get above ground. *Now*. And call for backup. Tell them we’ve got a potential hostage situation.” “Hostage? There’s no one down here!” “There will be,” she snapped. “And they won’t be human.” They clambered back onto the platform just as Harlow’s radio crackled. “Quinn, you there? We’ve got a situation topside.” The voice belonged to DS Cole, her temporary partner. “Some civvie’s kicking up a fuss, says she’s got info on the case. Claims she’s a ‘researcher.’” Harlow’s fingers twitched. “Description?” “Red hair, glasses, jumpy as hell. Says her name’s Eva Kowalski.” The name hit her like a physical blow. *Kowalski*. She knew that name. Had seen it in Morris’s notes, circled in red, next to a list of books on occult symbolism. Coincidences didn’t exist in her world. Not anymore. She turned to Lin. “Get that backup. And *lock this station down*. No one in or out.” Then she keyed her radio. “Cole, I’m on my way. Don’t let her leave.” The compass in her pocket burned against her thigh. Midnight was coming. And whatever was waiting in the dark wasn’t going to stay there for long.
created_at"2026-02-20T14:13:36.38Z" 2/20/2026, 2:13:36 PM
model"mistralai/mistral-medium-3.1" 3/1/2001, 12:00:00 AM
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency325
moderation_latency(null)
generation_time30803
tokens_prompt923
tokens_completion1915
native_tokens_prompt875
native_tokens_completion1683
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)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"stop"
usage0.003716
router(null)
provider_responses
0
endpoint_id"13c5002b-8c5b-490c-8a5f-52ec0242804f"
id"4b6c42a04d184fa38bfcc29c32151c5a"
is_byokfalse
latency325
model_permaslug"mistralai/mistral-medium-3.1" 3/1/2001, 12:00:00 AM
provider_name"Mistral"
status200
api_type"completions"
id"gen-1771596816-cNZomyD9w7xGuKiOMdXn"
upstream_id"4b6c42a04d184fa38bfcc29c32151c5a"
total_cost0.003716
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags8
adverbTagCount1
adverbTags
0"Then she keyed [Then]"
dialogueSentences28
tagDensity0.286
leniency0.571
rawRatio0.125
effectiveRatio0.071
91.62% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1193
totalAiIsmAdverbs2
found
0
adverb"carefully"
count1
1
adverb"slowly"
count1
highlights
0"carefully"
1"slowly"
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)
45.52% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1193
totalAiIsms13
found
0
word"measured"
count1
1
word"gloom"
count2
2
word"etched"
count1
3
word"chill"
count1
4
word"pulsed"
count1
5
word"flickered"
count2
6
word"weight"
count1
7
word"wavered"
count1
8
word"echoed"
count1
9
word"whisper"
count1
10
word"potential"
count1
highlights
0"measured"
1"gloom"
2"etched"
3"chill"
4"pulsed"
5"flickered"
6"weight"
7"wavered"
8"echoed"
9"whisper"
10"potential"
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
narrationSentences98
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount2
narrationSentences98
filterMatches(empty)
hedgeMatches
0"seemed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences117
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
maxSentenceWordsSeen44
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans20
markdownWords29
totalWords1179
ratio0.025
matches
0"down"
1"felt"
2"her"
3"attention"
4"conspiracy theorist"
5"marker"
6"all"
7"unexplained phenomenon"
8"symbol"
9"breathe"
10"gate"
11"voices"
12"moved"
13"glowed"
14"Now"
15"wrong"
16"THE VEIL THINS AT MIDNIGHT."
17"Now"
18"Kowalski"
19"lock this station down"
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions15
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions26
wordCount918
uniqueNames7
maxNameDensity0.98
worstName"Lin"
maxWindowNameDensity2
worstWindowName"Harlow"
discoveredNames
Tube1
Harlow8
Quinn1
Lin9
Morris5
Adam1
Cole1
persons
0"Harlow"
1"Quinn"
2"Lin"
3"Morris"
4"Adam"
5"Cole"
places(empty)
globalScore1
windowScore1
5.77% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences52
glossingSentenceCount3
matches
0"looked like they’d been scratched by a tr"
1"as if reacting to her presence"
2"as if sensing her proximity to something vast and hungry"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.848
wordCount1179
matches
0"not the cold of the station, but something deeper, like the memory of ice on bare skin"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences117
matches
0"knew that name"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs42
mean28.07
std25.95
cv0.924
sampleLengths
078
136
275
343
48
523
67
753
860
91
10116
117
1246
136
1427
1579
164
1748
1826
1910
2021
216
2242
2355
2411
2510
2641
271
2826
295
305
315
3226
336
3410
3545
364
3711
3839
3931
409
4117
98.10% Passive voice overuse
Target: ≤2% passive sentences
passiveCount2
totalSentences98
matches
0"been scratched"
1"were gone"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount2
totalVerbs161
matches
0"was coming"
1"was waiting"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount9
semicolonCount0
flaggedSentences9
totalSentences117
ratio0.077
matches
0"The beam of her torch cut through the gloom, illuminating the graffiti-scarred walls—tags in languages she didn’t recognize, symbols that made her fingers twitch toward the cross at her throat."
1"The verdigris patina was unmistakable—old, but not antique."
2"The moment her fingers brushed the brass, a chill ran up her arm—not the cold of the station, but something deeper, like the memory of ice on bare skin."
3"The security footage had shown nothing—just Morris stepping into a patch of shadow and vanishing."
4"The tracks called to her, that unnatural dark pulling at something deep in her chest—the same instinct that had made her trust Morris when he’d laughed off her concerns about the warehouse, the same instinct that had failed her when it mattered."
5"But a *symbol*, carved into the wall at eye level—a circle bisected by a jagged line, the same mark she’d found scrawled in Morris’s notebook the night he disappeared."
6"A sound echoed behind her—the scuff of a shoe on concrete."
7"Not a voice—*voices*, layered, distorted, like a radio tuned between stations."
8"For a heartbeat, the darkness *moved*, coalescing into shapes—tall, slender figures with limbs too long, their edges blurring into the black."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount928
adjectiveStacks0
stackExamples(empty)
adverbCount23
adverbRatio0.02478448275862069
lyAdverbCount5
lyAdverbRatio0.005387931034482759
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences117
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences117
mean10.08
std8.45
cv0.839
sampleLengths
022
119
230
34
43
521
66
79
83
99
109
1128
125
1321
1411
158
161
174
183
1916
208
217
2216
235
242
253
2636
2714
283
2918
3029
313
325
332
341
3510
3613
373
3824
3915
4015
4116
4220
433
444
455
4641
472
484
4917
56.70% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats7
diversityRatio0.37606837606837606
totalSentences117
uniqueOpeners44
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount4
totalSentences90
matches
0"Instead, she let her gaze"
1"Then she saw it."
2"Then the torch steadied, and"
3"Then she keyed her radio"
ratio0.044
91.11% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount29
totalSentences90
matches
0"His torch wobbled, casting jagged"
1"She never did when the"
2"It pointed *down*, toward the"
3"She crouched, gloved fingers hovering"
4"They were functional."
5"She’d seen enough occult nonsense"
6"she asked, voice low"
7"He lowered his voice"
8"She reached into her coat,"
9"She ignored Lin, turning the"
10"she said, standing abruptly"
11"She pocketed the compass, the"
12"She didn’t wait for an"
13"She stepped onto the rails,"
14"Her breath fogged."
15"Her torchlight wavered."
16"She spun, hand going to"
17"Her voice was steel"
18"She didn’t answer."
19"She didn’t know how."
ratio0.322
76.67% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount69
totalSentences90
matches
0"The abandoned Tube station reeked"
1"Detective Harlow Quinn stepped over"
2"The beam of her torch"
3"The voice belonged to PC"
4"His torch wobbled, casting jagged"
5"Harlow didn’t answer."
6"She never did when the"
7"The platform was empty save"
8"The needle didn’t point north."
9"It pointed *down*, toward the"
10"She crouched, gloved fingers hovering"
11"The verdigris patina was unmistakable—old,"
12"The sigils weren’t decorative."
13"They were functional."
14"She’d seen enough occult nonsense"
15"she asked, voice low"
16"Lin flipped a page on"
17"Harlow exhaled through her nose."
18"The constable hesitated."
19"He lowered his voice"
ratio0.767
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences90
matches(empty)
ratio0
0.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences34
technicalSentenceCount7
matches
0"The abandoned Tube station reeked of damp concrete and something older, something that clung to the back of the throat like rust."
1"The beam of her torch cut through the gloom, illuminating the graffiti-scarred walls—tags in languages she didn’t recognize, symbols that made her fingers twitc…"
2"The platform was empty save for a single object: a small brass compass, its casing etched with sigils that looked like they’d been scratched by a trembling hand…"
3"The sigils pulsed faintly under her torchlight, as if reacting to her presence."
4"The tracks called to her, that unnatural dark pulling at something deep in her chest—the same instinct that had made her trust Morris when he’d laughed off her …"
5"But the compass in her pocket grew heavier, the needle spinning wildly now, as if sensing her proximity to something vast and hungry."
6"For a heartbeat, the darkness *moved*, coalescing into shapes—tall, slender figures with limbs too long, their edges blurring into the black."
62.50% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags8
uselessAdditionCount1
matches
0"she asked, voice low"
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags3
fancyCount1
fancyTags
0"she snapped (snap)"
dialogueSentences28
tagDensity0.107
leniency0.214
rawRatio0.333
effectiveRatio0.071
80.9326%