Run: 2026-09-25-01M3CKHG9B98Y299HE83BBJQAZ

Run Details

Duration:
14.1s
Cost:
$0.013638
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 beneath Camden reeked of damp concrete and old rust, the air thick with the kind of silence that pressed against the eardrums. Detective Harlow Quinn stepped over the yellow police tape, her boots scuffing against the gritty floor. The beam of her torch cut through the gloom, illuminating the peeling posters on the walls—faded advertisements for long-forgotten plays and products, their edges curled like dead leaves. She adjusted the worn leather watch on her left wrist, the familiar weight a small comfort in the oppressive dark. Something was wrong here. The call had come in an hour ago: a body found in the disused station, tucked behind a rusted maintenance door. Uniform had already secured the scene, their voices hushed, their movements tense. But the moment Quinn had descended the crumbling stairs, her instincts had flared. The station was too quiet. No rats skittering, no distant drip of water. Just... nothing. As if the place itself was holding its breath. She rounded the corner, her sharp jaw tightening. The body lay sprawled on its back, limbs splayed unnaturally, as if it had been dropped from a great height. A man, mid-thirties, dressed in a rumpled suit that might have once been expensive. His face was frozen in an expression of sheer terror, eyes wide, mouth open in a silent scream. But it wasn’t the body that made Quinn’s pulse spike—it was the lack of blood. No wound. No trauma. Just a man, dead, with no visible cause. “Quinn.” She turned. Eva Kowalski stood a few feet away, her round glasses reflecting the dim light, curly red hair escaping in wild tendrils from behind her ears. She tucked a strand behind her left ear—a nervous habit Quinn had come to recognize—and adjusted the strap of her worn leather satchel. The satchel was bulging, as always, with books and notes and God-knew-what-else. “You’re not supposed to be here,” Quinn said, her voice clipped. Eva shrugged, freckles standing out against her pale skin. “I was already in the archives when the call came in. Thought I might be useful.” She gestured to the body. “You’re thinking it’s not natural, aren’t you?” Quinn crouched beside the corpse, her gloved fingers hovering just above the man’s collar. No signs of struggle. No defensive wounds. “No blood. No weapon. No signs of foul play. But he’s dead.” She glanced up at Eva. “You tell me. What kills a man and leaves no mark?” Eva stepped closer, her green eyes scanning the scene with an intensity that always unnerved Quinn. “There are things that can do that. Things that don’t leave... physical traces.” Quinn exhaled through her nose. Eva’s “things” were usually the kind that made Quinn’s skin crawl—supernatural, unexplainable. And Quinn didn’t believe in that. Not really. Not after Morris. Not after the case that had taken him and left her with nothing but questions and a cold, gnawing certainty that the world was far stranger than she’d ever wanted to admit. “Or,” Eva continued, “he was already dead when he got here.” Quinn frowned. “Rigor’s barely set in. He hasn’t been here long.” Eva knelt on the other side of the body, her satchel thumping against the ground. She reached into it and pulled out a small brass compass. The casing was etched with intricate sigils, its surface dulled by a patina of verdigris. The needle didn’t point north. It twitched, restless, as if searching for something just out of reach. Quinn’s eyes narrowed. “What the hell is that?” “Veil Compass.” Eva held it up. “Points toward the nearest supernatural rift or portal.” Quinn’s stomach twisted. “You’re telling me this place is some kind of... gateway?” Eva didn’t answer. She stood, the compass still trembling in her hand, and walked slowly toward the far wall. The needle swung wildly, then settled, pointing directly at a section of the wall that looked no different from the rest—just more peeling posters, more grime. Quinn followed, her boots echoing in the silence. “Eva, if this is some kind of joke—” “It’s not.” Eva pressed her palm against the wall. The compass needle spun, then stilled, pointing at her fingers. She pushed. The wall gave way with a groan of rusted hinges, revealing a narrow passage beyond. The air that rushed out was cold, stale, and carried the faint scent of something metallic and old. Quinn’s breath hitched. The passage wasn’t on any of the station blueprints she’d seen. It couldn’t be. Eva stepped inside, the compass leading her forward. Quinn hesitated only a second before following, her torch beam cutting through the darkness. The passage twisted, then opened into a cavernous space. The walls were lined with stalls, their contents draped in shadow. The air hummed with a low, almost imperceptible energy, like the vibration of a plucked string. The Veil Market. Quinn had heard whispers of it—an underground black market for the supernatural, moving locations every full moon, accessible only to those who knew how to find it. And, apparently, to those who stumbled upon it by accident. Eva’s voice was hushed. “This is where he died. Not the station. Here.” Quinn’s torch flickered over the stalls. Jars of glowing liquid. Strange, twisted artifacts. A bone token lying on a counter, identical to the ones rumored to be the Market’s entry requirement. Her mind raced. The body had been moved. But why? She crouched, running her fingers over the ground. The dust was disturbed, as if something—or someone—had been dragged. “He was killed here, then taken to the station. But why stage it like that?” Eva’s compass needle spun again, this time pointing toward a dark corner of the Market. “Because someone didn’t want us to find this.” Quinn followed the direction, her torch beam catching on something glinting in the shadows. A small, brass object. She picked it up, turning it over in her fingers. Another compass. Identical to Eva’s. And then she saw the blood. Not on the body. Not in the station. But here, in the Market, smeared across the floor in a pattern that made her skin prickle. Sigils. The same kind etched into the compass. Eva’s breath was shallow. “That’s not just blood. That’s a summoning circle.” Quinn’s grip tightened on the compass. “Summoning what?” Eva didn’t answer. She didn’t have to. The air grew heavier, the hum of the Market’s energy rising to a pitch that made Quinn’s teeth ache. The shadows at the edges of the torchlight seemed to writhe, twisting into shapes that weren’t quite right. And then the compass in Quinn’s hand grew warm. The needle spun, faster and faster, until it was a blur. Then it stopped. Pointing directly at her. Quinn’s blood turned to ice. She looked down. The sigils on the floor were glowing faintly, pulsing in time with her heartbeat. Eva grabbed her arm. “Harlow, we need to go. Now.” But Quinn couldn’t move. The shadows were closing in, the Market’s stalls fading into the dark. The last thing she saw before the torch died was the compass needle, quivering, as if something had just stepped out of the rift—and it was standing right behind her.
created_at"2026-09-25T15:39:30.483Z" 9/25/2026, 3:39:30 PM
model"mistralai/mistral-medium-3.5-20260430"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency442
moderation_latency(null)
generation_time14080
tokens_prompt896
tokens_completion1867
native_tokens_prompt887
native_tokens_completion1641
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)
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origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"stop"
service_tier"default"
usage0.013638
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
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request_id"req-1790350770-51ooWT3nKNCEHKD5vyC7"
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api_type"completions"
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upstream_id"edf4938fda37431bb70fa068f312c718"
provider_responses
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endpoint_id"38ef23a9-5cb3-46fa-85ec-7aed174f04eb"
id"edf4938fda37431bb70fa068f312c718"
is_byokfalse
latency442
model_permaslug"mistralai/mistral-medium-3.5-20260430"
provider_name"Mistral"
status200
total_cost0.013638
cache_discount(null)
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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
totalTags6
adverbTagCount0
adverbTags(empty)
dialogueSentences22
tagDensity0.273
leniency0.545
rawRatio0
effectiveRatio0
91.71% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1206
totalAiIsmAdverbs2
found
0
adverb"really"
count1
1
adverb"slowly"
count1
highlights
0"really"
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)
25.37% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1206
totalAiIsms18
found
0
word"silence"
count2
1
word"gloom"
count1
2
word"familiar"
count1
3
word"weight"
count1
4
word"oppressive"
count1
5
word"pulse"
count1
6
word"scanning"
count1
7
word"intensity"
count1
8
word"etched"
count2
9
word"intricate"
count1
10
word"stomach"
count1
11
word"echoing"
count1
12
word"flickered"
count1
13
word"raced"
count1
14
word"glinting"
count1
15
word"the last thing"
count1
highlights
0"silence"
1"gloom"
2"familiar"
3"weight"
4"oppressive"
5"pulse"
6"scanning"
7"intensity"
8"etched"
9"intricate"
10"stomach"
11"echoing"
12"flickered"
13"raced"
14"glinting"
15"the last thing"
100.00% Cliché density
Target: ≤1 cliche(s) per 800-word window
totalCliches1
maxInWindow1
found
0
label"eyes widened/narrowed"
count1
highlights
0"eyes narrowed"
100.00% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences108
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount1
narrationSentences108
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)
analyzedSentences123
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen32
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1196
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions10
unquotedAttributions0
matches(empty)
16.67% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions54
wordCount1028
uniqueNames10
maxNameDensity2.33
worstName"Quinn"
maxWindowNameDensity4.5
worstWindowName"Quinn"
discoveredNames
Tube1
Camden1
Harlow1
Quinn24
Kowalski1
God-knew-what-else1
Eva17
Morris1
Veil1
Market6
persons
0"Camden"
1"Harlow"
2"Quinn"
3"Kowalski"
4"Eva"
5"Morris"
6"Market"
places(empty)
globalScore0.333
windowScore0.167
68.03% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences61
glossingSentenceCount2
matches
0"as if searching for something just out of reach"
1"And, apparently, to those who stumb"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.836
wordCount1196
matches
0"Not after the case that had taken him and left her with nothing but questions"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences123
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs40
mean29.9
std22.66
cv0.758
sampleLengths
090
14
270
375
412
51
662
711
837
949
1029
1160
1211
1311
1458
158
1614
1713
1845
1916
2054
2117
2258
233
2437
2513
2641
2733
2823
2933
306
3133
3212
338
3444
3523
364
3722
3810
3946
82.52% Passive voice overuse
Target: ≤2% passive sentences
passiveCount7
totalSentences108
matches
0"been dropped"
1"was frozen"
2"was etched"
3"were lined"
4"was hushed"
5"been moved"
6"was disturbed"
7"been dragged"
10.61% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount5
totalVerbs176
matches
0"was holding"
1"was bulging"
2"were glowing"
3"were closing"
4"was standing"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount10
semicolonCount0
flaggedSentences8
totalSentences123
ratio0.065
matches
0"The beam of her torch cut through the gloom, illuminating the peeling posters on the walls—faded advertisements for long-forgotten plays and products, their edges curled like dead leaves."
1"But it wasn’t the body that made Quinn’s pulse spike—it was the lack of blood."
2"She tucked a strand behind her left ear—a nervous habit Quinn had come to recognize—and adjusted the strap of her worn leather satchel."
3"Eva’s “things” were usually the kind that made Quinn’s skin crawl—supernatural, unexplainable."
4"The needle swung wildly, then settled, pointing directly at a section of the wall that looked no different from the rest—just more peeling posters, more grime."
5"Quinn had heard whispers of it—an underground black market for the supernatural, moving locations every full moon, accessible only to those who knew how to find it."
6"The dust was disturbed, as if something—or someone—had been dragged."
7"The last thing she saw before the torch died was the compass needle, quivering, as if something had just stepped out of the rift—and it was standing right behind her."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1043
adjectiveStacks0
stackExamples(empty)
adverbCount41
adverbRatio0.039309683604985615
lyAdverbCount12
lyAdverbRatio0.011505273250239693
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences123
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences123
mean9.72
std7
cv0.719
sampleLengths
026
116
228
320
44
521
612
713
85
98
101
111
129
138
1420
1514
1618
1715
182
192
208
211
222
2325
2423
2512
2611
279
2821
297
3014
314
323
3317
3411
3516
3613
375
3812
396
402
413
4232
4311
442
459
4615
4711
4815
495
42.28% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats13
diversityRatio0.3170731707317073
totalSentences123
uniqueOpeners39
69.44% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount2
totalSentences96
matches
0"Just a man, dead, with"
1"Then it stopped."
ratio0.021
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount15
totalSentences96
matches
0"She adjusted the worn leather"
1"She rounded the corner, her"
2"His face was frozen in"
3"She tucked a strand behind"
4"She gestured to the body"
5"She glanced up at Eva"
6"She reached into it and"
7"It twitched, restless, as if"
8"She stood, the compass still"
9"It couldn’t be."
10"Her mind raced."
11"She crouched, running her fingers"
12"She picked it up, turning"
13"She didn’t have to."
14"She looked down."
ratio0.156
69.38% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount75
totalSentences96
matches
0"The abandoned Tube station beneath"
1"Detective Harlow Quinn stepped over"
2"The beam of her torch"
3"She adjusted the worn leather"
4"Something was wrong here."
5"The call had come in"
6"Uniform had already secured the"
7"The station was too quiet."
8"She rounded the corner, her"
9"The body lay sprawled on"
10"A man, mid-thirties, dressed in"
11"His face was frozen in"
12"Eva Kowalski stood a few"
13"She tucked a strand behind"
14"The satchel was bulging, as"
15"Quinn said, her voice clipped"
16"Eva shrugged, freckles standing out"
17"She gestured to the body"
18"Quinn crouched beside the corpse,"
19"She glanced up at Eva"
ratio0.781
100.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount2
totalSentences96
matches
0"As if the place itself"
1"And, apparently, to those who"
ratio0.021
12.99% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences44
technicalSentenceCount8
matches
0"A man, mid-thirties, dressed in a rumpled suit that might have once been expensive."
1"But it wasn’t the body that made Quinn’s pulse spike—it was the lack of blood."
2"Not after the case that had taken him and left her with nothing but questions and a cold, gnawing certainty that the world was far stranger than she’d ever want…"
3"It twitched, restless, as if searching for something just out of reach."
4"The needle swung wildly, then settled, pointing directly at a section of the wall that looked no different from the rest—just more peeling posters, more grime."
5"The air that rushed out was cold, stale, and carried the faint scent of something metallic and old."
6"The shadows were closing in, the Market’s stalls fading into the dark."
7"The last thing she saw before the torch died was the compass needle, quivering, as if something had just stepped out of the rift—and it was standing right behin…"
0.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags6
uselessAdditionCount2
matches
0"Quinn said, her voice clipped"
1"Quinn’s skin crawl, unexplainable"
59.09% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags3
fancyCount2
fancyTags
0"Eva continued (continue)"
1"Eva pressed (press)"
dialogueSentences22
tagDensity0.136
leniency0.273
rawRatio0.667
effectiveRatio0.182
74.9361%