Run: 2026-09-25-01M3CKC7RG2D98K71QN79F1KEX

Run Details

Duration:
23.6s
Cost:
$0.022083
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 tinned goods. The place had been deserted for decades, but something had stirred here tonight. A uniformed officer stood near the far platform, his face pale under the flickering light of a battery-powered lantern. He nodded at her as she approached, but she barely acknowledged him. Her sharp brown eyes were already scanning the scene, taking in every detail with military precision. The body lay sprawled near the edge of the platform, a man in a rumpled suit, his tie loose, one hand clutching a small brass object. The other hand was outstretched, fingers curled as if he’d been reaching for something—or someone. Harlow crouched beside the corpse, her leather watch snug against her wrist. The brass object in the man’s hand was a compass, its casing patined with verdigris, its face etched with strange, swirling sigils. The needle didn’t point north. It twitched erratically, as if caught between invisible forces. She didn’t touch it. Not yet. “Detective Quinn.” The voice came from behind her, soft but carrying the weight of someone used to being heard. Harlow turned her head to see Eva Kowalski standing a few paces away, her round glasses reflecting the dim light. The red-haired researcher had her satchel slung over one shoulder, the worn leather bulging with books. She tucked a loose curl behind her left ear, a nervous habit Harlow had noticed before. “Eva,” Harlow said, straightening up. “You’re not supposed to be here.” Eva stepped closer, her green eyes flicking over the body, then the compass. “I was already on-site when the call came in. The Museum sent me to catalog some artifacts in the area.” She hesitated, then added, “I know this place.” Harlow’s jaw tightened. “Then you know it’s a crime scene.” Eva didn’t flinch. “I also know that whatever happened here isn’t what it seems.” Harlow exhaled through her nose. She didn’t like civilians in her space, especially not ones who thought they knew better. But Eva had been right before—too right, sometimes. And there was something about the way the woman’s gaze lingered on the compass, as if she recognized it. The detective turned back to the body. The man’s face was frozen in an expression of shock, his eyes wide, pupils dilated. No visible wounds, no blood. Just the compass, and the way his fingers were blackened at the tips, as if burned from the inside out. “No signs of struggle,” Harlow murmured. “No defensive wounds. No weapon nearby.” “Because there wasn’t one,” Eva said. Harlow shot her a look. “You’re saying he wasn’t murdered?” “I’m saying he wasn’t murdered by anything… conventional.” Eva crouched beside the body, her voice dropping to a whisper. “Look at his hand. The compass—it’s a Veil Compass. It points to rifts, portals. Supernatural energy.” Harlow’s stomach twisted. She’d heard that word before—supernatural. It had slithered into her life three years ago, when her partner, DS Morris, had vanished during a case that had never been solved. The official report called it an accident. Harlow knew better. She just didn’t know how to prove it. “You’re telling me this man died because of… magic?” The word tasted bitter on her tongue. Eva didn’t laugh. She didn’t even smile. “I’m telling you he was holding an object that interacts with forces most people don’t believe in. And look at his fingers. That’s not frostbite or a chemical burn. That’s exposure to raw Veil energy.” Harlow stood, her mind racing. The compass. The man’s expression. The lack of any other evidence. “Then where’s the rift?” Eva’s gaze flicked to the far wall, where the torchlight barely reached. “There. The air’s… wrong. Like looking through a heat haze, but colder.” Harlow squinted. At first, she saw nothing. Then, a shimmer, a distortion in the air, like a ripple in a pond. It was subtle, almost imperceptible, but it was there. She took a step toward it, her instincts screaming at her to be cautious. The compass in the dead man’s hand twitched violently, the needle spinning in wild circles before settling on a point just beyond the distortion. “Don’t touch it,” Eva said sharply. Harlow didn’t intend to. She’d seen what happened to people who meddled in things they didn’t understand. Morris had been one of them. But she couldn’t look away, either. The rift—if that’s what it was—pulsed faintly, like a slow, unsteady heartbeat. “Why would he be here?” Harlow asked. “This place is abandoned. No reason for a man in a suit to be wandering around an old Tube station.” Eva’s fingers tightened around the strap of her satchel. “The Veil Market moves every full moon. It was here last night.” Harlow’s mind clicked. The Veil Market. She’d heard whispers of it in the underworld—an underground black market for the supernatural. Enchanted goods, forbidden knowledge. The kind of place where people went looking for things they shouldn’t have. “You think he was buying something?” Harlow asked. “Or selling.” Eva’s voice was grim. “That compass is Shade-crafted. Rare. Valuable. If he was holding it when the rift destabilized…” “It killed him.” Eva nodded. “Veil energy can be lethal if you’re not prepared for it. And if the Market was here, there would’ve been a lot of it floating around.” Harlow crouched again, this time examining the man’s other hand. His fingers were curled, but not in a clutch. In a point. Toward the wall opposite the rift. She followed the line of his arm with her eyes, past the rift, to the shadows beyond. There, half-hidden in the grime, was a small, smooth object. She reached for it, then paused, glancing at Eva. “Gloves,” Eva said. Harlow pulled a pair of latex gloves from her pocket and snapped them on before picking up the object. It was a token, carved from bone, cool and heavy in her palm. One side was etched with the same sigils as the compass. “Entry token,” Eva breathed. “For the Market.” Harlow turned it over in her fingers. “So he was here for the Market. Got his compass. Then what? The rift opened, and he couldn’t handle it?” “Or he tried to use the compass to navigate it and something went wrong.” Eva’s voice was tight. “Veil Compasses are finicky. If you don’t know what you’re doing, they can lead you straight into danger.” Harlow stood, the bone token clutched in her gloved hand. The pieces were starting to fit, but the picture they formed was one she didn’t like. A man comes to the Veil Market, buys a dangerous artifact, and dies because he couldn’t control it. But why? And why here, why now? She looked back at the body, at the fear frozen on the man’s face. There was something else, too. Something she’d missed at first. His lips were parted, as if he’d been about to speak. Or scream. And around his neck, half-hidden by his collar, was a chain. A thin, silver chain, with a small pendant tucked beneath his shirt. Harlow reached for it, her fingers brushing the cold metal. She pulled it free. The pendant was a small, circular disc, engraved with a symbol she didn’t recognize—a crescent moon cradling a star. Eva’s breath hitched. “That’s not just any symbol,” Eva said, her voice barely above a whisper. “That’s the mark of the Obsidian Circle.” Harlow’s blood ran cold. The Obsidian Circle. She’d heard the name before, in the same hushed tones as the Veil Market. A secretive group, rumored to deal in the occult. Rumored to have their fingers in every supernatural pie in the city. “You’re saying this man was one of them?” Harlow asked. Eva nodded. “Or he was working for them. The Circle doesn’t just let people wander around with their sigils.” Harlow’s mind raced. If the Obsidian Circle was involved, this wasn’t just a case of a man getting in over his head with supernatural forces. This was something bigger. Something organized. And if they were here, at the Veil Market, then they were after something. Or someone. She looked back at the rift, still pulsing faintly in the air. It was smaller now, as if it were closing. Or retreating. As if it knew it had been discovered. “Eva,” Harlow said, her voice low and urgent. “What happens if the Circle gets their hands on a Veil Compass?” Eva’s face paled. “They’d have a way to find—and control—every rift in the city.” Harlow’s grip tightened around the bone token. The implications were staggering. If the Obsidian Circle could manipulate the Veil, they could move people, objects, even entire groups through the city undetected. They could smuggle, traffic, steal—anything and everything. And no one would be able to stop them. She turned back to the body, her mind already piecing together the next steps. The man’s suit was expensive, tailored. Not the kind of thing a low-level lackey would wear. This was someone important. Someone the Circle wouldn’t want to lose. “We need to find out who he is,” Harlow said. “And we need to do it fast. Before the Circle realizes he’s gone.” Eva nodded, but her eyes were fixed on the rift. It was nearly gone now, just a faint shimmer in the air. “There’s something else,” she said slowly. “The Market moves every full moon. But it doesn’t just move randomly. It follows the ley lines—the paths of supernatural energy. If the Circle is involved, they might be using the Market’s movements to map those lines. To find the strongest points.” Harlow’s stomach twisted. “You’re saying they’re building a map of the Veil.” “Exactly.” Eva’s voice was grim. “And if they succeed, they won’t just control the rifts. They’ll control the entire supernatural underworld.” Harlow took a deep breath, her military precision kicking in. She needed to secure the scene, get the body to the morgue, run his prints, his face, his everything. She needed to find out who he was, who he worked for, and what he was doing here. And she needed to do it before the Obsidian Circle covered their tracks. But first, she needed to know more about the Veil. More than Eva was telling her. “Eva,” she said, turning to face the researcher. “I need you to tell me everything you know about the Veil Market. And the Obsidian Circle. No half-truths. No omissions.” Eva met her gaze, her green eyes steady. For a moment, Harlow thought she might refuse. But then Eva nodded, her fingers tucking her hair behind her left ear. “On one condition.” Harlow raised an eyebrow. “I’m listening.” “You let me help you with this case. Officially.” Harlow’s jaw tightened. She didn’t like working with civilians. Didn’t like the idea of putting someone else in the line of fire, especially not a woman who carried books instead of a gun. But Eva knew things. Things that Harlow needed to know. And if the Obsidian Circle was involved, she was going to need all the help she could get. “Fine,” Harlow said at last. “But you follow my lead. And you do exactly what I say, when I say it. No heroics.” Eva’s lips quirked, just for a second. “No heroics. Got it.” Harlow turned back to the scene, her mind already racing ahead. The body. The compass. The token. The rift. And the symbol of the Obsidian Circle, burning a hole in her palm. This wasn’t just a murder. It was a message. And she was going to make sure she understood it before the Circle sent another.
created_at"2026-09-25T15:36:37.91Z" 9/25/2026, 3:36:37 PM
model"mistralai/mistral-medium-3.5-20260430"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency462
moderation_latency(null)
generation_time23530
tokens_prompt896
tokens_completion3081
native_tokens_prompt887
native_tokens_completion2767
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"
usage0.022083
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1790350597-jcC2aGYZIKdY20eWoIcN"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790350597-unNY0BFtczgowwWMpe94"
upstream_id"04606566225d4a04957106165ffbe6f3"
provider_responses
0
endpoint_id"d21d316f-d540-4718-b36e-3beff85d0cf9"
id"04606566225d4a04957106165ffbe6f3"
is_byokfalse
latency462
model_permaslug"mistralai/mistral-medium-3.5-20260430"
provider_name"Mistral"
status200
total_cost0.022083
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
86.79% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags18
adverbTagCount3
adverbTags
0"She hesitated then [then]"
1"Eva said sharply [sharply]"
2"she said slowly [slowly]"
dialogueSentences53
tagDensity0.34
leniency0.679
rawRatio0.167
effectiveRatio0.113
92.48% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1996
totalAiIsmAdverbs3
found
0
adverb"sharply"
count1
1
adverb"barely above a whisper"
count1
2
adverb"slowly"
count1
highlights
0"sharply"
1"barely above a whisper"
2"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)
57.41% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1996
totalAiIsms17
found
0
word"silence"
count1
1
word"gloom"
count1
2
word"scanning"
count1
3
word"etched"
count2
4
word"weight"
count1
5
word"whisper"
count2
6
word"stomach"
count2
7
word"racing"
count2
8
word"flicked"
count1
9
word"pulsed"
count1
10
word"navigate"
count1
11
word"raced"
count1
12
word"eyebrow"
count1
highlights
0"silence"
1"gloom"
2"scanning"
3"etched"
4"weight"
5"whisper"
6"stomach"
7"racing"
8"flicked"
9"pulsed"
10"navigate"
11"raced"
12"eyebrow"
100.00% Cliché density
Target: ≤1 cliche(s) per 800-word window
totalCliches1
maxInWindow1
found
0
label"blood ran cold"
count1
highlights
0"blood ran cold"
100.00% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences166
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount2
narrationSentences166
filterMatches
0"watch"
hedgeMatches
0"tend to"
1"happened to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences198
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen43
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1983
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions23
unquotedAttributions0
matches(empty)
27.30% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions93
wordCount1467
uniqueNames11
maxNameDensity2.45
worstName"Harlow"
maxWindowNameDensity4
worstWindowName"Harlow"
discoveredNames
Tube1
Camden1
Harlow36
Quinn1
Eva27
Kowalski1
Morris2
Veil6
Market4
Obsidian6
Circle8
persons
0"Camden"
1"Harlow"
2"Quinn"
3"Eva"
4"Kowalski"
5"Morris"
6"Market"
7"Circle"
places
0"Veil"
globalScore0.273
windowScore0.333
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences98
glossingSentenceCount0
matches(empty)
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount1983
matches(empty)
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences198
matches
0"heard that word"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs65
mean30.51
std20.3
cv0.665
sampleLengths
078
188
254
32
469
511
641
710
814
947
1047
1112
126
1310
1435
1550
1616
1742
1820
1924
2068
216
2241
2327
2421
2537
268
2721
283
2928
3064
313
3243
337
3427
3536
3651
3760
3836
3920
4042
4110
4219
4347
4431
4520
4614
4747
4841
4923
77.78% Passive voice overuse
Target: ≤2% passive sentences
passiveCount13
totalSentences166
matches
0"been deserted"
1"was outstretched"
2"being heard"
3"was frozen"
4"were blackened"
5"been solved"
6"were curled"
7"was etched"
8"were parted"
9"was involved"
10"been discovered"
11"were fixed"
12"was involved"
98.61% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount4
totalVerbs263
matches
0"were already scanning"
1"were starting"
2"was doing"
3"was telling"
27.42% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount9
semicolonCount0
flaggedSentences8
totalSentences198
ratio0.04
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 tinned goods."
1"The other hand was outstretched, fingers curled as if he’d been reaching for something—or someone."
2"But Eva had been right before—too right, sometimes."
3"She’d heard that word before—supernatural."
4"The rift—if that’s what it was—pulsed faintly, like a slow, unsteady heartbeat."
5"She’d heard whispers of it in the underworld—an underground black market for the supernatural."
6"The pendant was a small, circular disc, engraved with a symbol she didn’t recognize—a crescent moon cradling a star."
7"They could smuggle, traffic, steal—anything and everything."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1482
adjectiveStacks0
stackExamples(empty)
adverbCount47
adverbRatio0.03171390013495277
lyAdverbCount12
lyAdverbRatio0.008097165991902834
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences198
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences198
mean10.02
std6.86
cv0.685
sampleLengths
026
116
223
313
419
512
616
726
815
912
1022
115
129
134
142
152
1617
1720
1816
1916
205
216
2213
2328
243
257
263
2711
285
2915
308
3119
327
3315
345
3520
366
376
386
395
405
4119
4216
433
445
4524
467
473
488
4916
43.94% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats12
diversityRatio0.25757575757575757
totalSentences198
uniqueOpeners51
69.44% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount3
totalSentences144
matches
0"Just the compass, and the"
1"Then, a shimmer, a distortion"
2"More than Eva was telling"
ratio0.021
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount34
totalSentences144
matches
0"He nodded at her as"
1"Her sharp brown eyes were"
2"It twitched erratically, as if"
3"She didn’t touch it."
4"She tucked a loose curl"
5"She hesitated, then added"
6"She didn’t like civilians in"
7"She’d heard that word before—supernatural."
8"It had slithered into her"
9"She just didn’t know how"
10"She didn’t even smile."
11"It was subtle, almost imperceptible,"
12"She took a step toward"
13"She’d seen what happened to"
14"She’d heard whispers of it"
15"His fingers were curled, but"
16"She followed the line of"
17"She reached for it, then"
18"It was a token, carved"
19"She looked back at the"
ratio0.236
67.64% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount113
totalSentences144
matches
0"The abandoned Tube station beneath"
1"Detective Harlow Quinn stepped over"
2"The beam of her torch"
3"The place had been deserted"
4"A uniformed officer stood near"
5"He nodded at her as"
6"Her sharp brown eyes were"
7"The body lay sprawled near"
8"The other hand was outstretched,"
9"Harlow crouched beside the corpse,"
10"The brass object in the"
11"The needle didn’t point north."
12"It twitched erratically, as if"
13"She didn’t touch it."
14"The voice came from behind"
15"Harlow turned her head to"
16"The red-haired researcher had her"
17"She tucked a loose curl"
18"Harlow said, straightening up"
19"Eva stepped closer, her green"
ratio0.785
100.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount3
totalSentences144
matches
0"If the Obsidian Circle was"
1"As if it knew it"
2"If the Obsidian Circle could"
ratio0.021
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences65
technicalSentenceCount1
matches
0"The other hand was outstretched, fingers curled as if he’d been reaching for something—or someone."
13.89% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags18
uselessAdditionCount4
matches
0"Eva crouched, her voice dropping to a whisper"
1"Eva said, her voice barely above a whisper"
2"Harlow said, her voice low and urgent"
3"she said, turning to face the researcher"
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags15
fancyCount2
fancyTags
0"Harlow murmured (murmur)"
1"Eva breathed (breathe)"
dialogueSentences53
tagDensity0.283
leniency0.566
rawRatio0.133
effectiveRatio0.075
85.4237%