NC Bench
Overview
About
Tests
Models
Vendors
Run: 2026-02-17-01KHMQEW2PQ53QYHV9PADVK6CP
Run Details
Model:
Mistral Small Creative
Test:
Bad Writing Habits
Scenario:
Thriller: chase through city streets
Duration:
11.5s
Cost:
$0.000705
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="4417" name="Tomás Herrera" aliases="Tommy, Tomás, Herrera" pronouns="he/him" species="Human" storyRole="Support"> <eyeColor>warm brown</eyeColor> <hair>short curly dark brown</hair> <height>5'10"</height> <age>29</age> <skinTone>olive skin</skinTone> <scar>scar running along his left forearm from a knife attack</scar> <medallion>Saint Christopher medallion around his neck</medallion> <birthplace>Seville, Spain</birthplace> <description>A former paramedic who provides off-the-books medical care for the clique.</description> <backstory>Born in Seville, Spain. He moved to London to work for the NHS but lost his license after administering unauthorized treatments to supernatural patients.</backstory> </character> <location id="854" name="The Raven's Nest" aliases="the Nest, Raven, Silas' bar" realm="Earth"> <signColor>distinctive green neon sign above the entrance</signColor> <secretRoom>hidden back room accessible through a bookshelf, used for clandestine meetings</secretRoom> <description>A dimly lit bar in Soho, London. The walls are covered with old maps and black-and-white photographs.</description> </location> <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> </codex> Write a fully fleshed out scene of at least 1000 words in the thriller genre. A detective is pursuing a suspect through rain-soaked city streets at night. The chase takes them from the street level down into an underground market. The detective must decide whether to follow the suspect into unfamiliar and potentially dangerous territory. 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
Messages
Meta
AI
The rain fell in sheets, turning the neon glow of Soho’s streets into a smeared watercolor. Detective Harlow Quinn didn’t slow. Her boots splashed through puddles, the soles gripping the slick pavement as she wove between clusters of drunken revelers stumbling out of pubs. The suspect—tall, lean, moving with the kind of liquid grace that set her teeth on edge—had a twenty-meter lead, but she
wasn’t losing
him. Not tonight. She’d been tailing Tomás Herrera for three days. Three days of watching him slip in and out of back alleys, of catching the way his fingers twitched toward the Saint Christopher medallion around his neck like it was some kind of talisman. Three days of him leading her in circles, always one step ahead, always just out of reach. But tonight, he’d made a mistake. He’d bolted from *The Raven’s Nest* like the devil himself was on his heels, and Quinn had been ready. She ducked under the awning of a shuttered bookshop, pressing her back against the damp brick. The suspect—Herrera—paused at the mouth of an alley, his breath fogging in the cold air. He wasn’t just running. He
was *hunting
* something. Or someone. The way his head swiveled, the way his fingers flexed at his sides—it wasn’t fear. It was calculation. Quinn exhaled through her nose, her pulse steady. She’d been a detective long enough to recognize the signs. Herrera wasn’t just some two-bit criminal. He was part of something bigger. Something that had cost her partner his life. The memory hit her like a punch to the gut—Morris, his face pale under the flickering fluorescent lights of the morgue, his skin too still, too *wrong*. The coroner’s report had called it a heart attack. But Quinn had seen the way his eyes had gone wide in that alley three years ago, the way his fingers had clawed at his chest like he
was trying
to dig something out. And then there had been the *other* thing—the thing she didn’t talk about, not even to herself. The way the shadows had *
moved* that night
. The way the air had hummed with something that wasn’t quite sound. She shook her head, forcing the memory back into the locked box where it belonged. Now wasn’t the time. Herrera bolted again, disappearing into the alley. Quinn pushed off the wall and followed, her hand resting on the baton at her hip. The alley stank of urine and damp cardboard, the rain turning the garbage into a soupy mess underfoot. She moved quietly, her breath controlled, her eyes scanning the darkness. The alley dead-ended at a rusted fire escape, but Herrera
wasn’t climbing
. He
was crouched
beside a manhole cover, his fingers working at the edges. Quinn’s stomach twisted. *No. Not down there.* She’d heard the rumors. Whispers in the station break room about things that moved in the dark beneath the city. About a market that wasn’t supposed to exist, where people traded in things that defied explanation. She’d written it off as cop lore, the kind of stories that kept rookies up at night. But the way Herrera was moving—like he knew exactly what he
was doing
—made her skin prickle. “Herrera!” Her voice cut through the rain, sharp and authoritative. “Step away from the manhole. Now.” He froze, his back still to her. For a second, she thought he might comply. Then he laughed—a low, humorless sound—and twisted the manhole cover free. The metal groaned as he shoved it aside, revealing a yawning black hole. “You don’t want to follow me, Detective,” he called over his shoulder, his accent thick with something that wasn’t just Spanish. It was older. Darker. “This isn’t your world.” Quinn’s fingers tightened around her baton. “I don’t care what world it is. You’re coming with me.” Herrera didn’t answer. He dropped into the hole, his descent swift and silent. Quinn didn’t hesitate. She holstered her baton, pulled her torch from her belt, and followed. The ladder was slick with condensation, the rungs cold beneath her palms. The air grew thicker as she descended, heavy with the scent of damp earth and something metallic, like old blood. Her torch cut a weak beam through the darkness, illuminating the curved walls of a tunnel. The Tube. But not the Tube she knew. This one
was abandoned
, the tiles cracked and peeling, the tracks rusted and overgrown with something that looked like black moss. Herrera was already moving, his
footsteps
echoing
ahead of her. Quinn picked up her pace, her boots splashing through shallow pools of stagnant water. The tunnel sloped downward, the air growing colder, the silence deeper. Then, just as she
was starting
to wonder if she’d lost him, the tunnel opened up. Quinn skidded to a stop, her torch beam flickering over a scene that made her breath catch. The abandoned station was vast, its high ceiling lost in darkness. Stalls lined the platform, their awnings patched together from mismatched fabrics, their wares glowing with an eerie, unnatural light. Jars of swirling liquids. Bundles of dried herbs that smelled like burnt sugar and something sharper, like ozone. Weapons that hummed with energy, their blades
etched
with symbols that made her eyes ache. And the people—if they *were* people. Some had too many eyes. Others moved with a fluidity that wasn’t quite human. A few turned to look at her, their gazes sharp with curiosity, with hunger. Quinn’s grip on her torch tightened. *What the hell is this place?* Herrera was already halfway across the platform, weaving through the crowd like he belonged here. Quinn forced herself to move, her pulse hammering in her throat. She kept her torch low, her free hand resting on her baton. She wasn’t armed for this. She wasn’t *prepared* for this. But she
wasn’t turning
back. A figure stepped into her path—a woman with skin like polished obsidian and eyes that gleamed like polished silver. She smiled, her teeth too white, too sharp. “Lost, Detective?” Her voice was a purr, smooth and dangerous. Quinn didn’t flinch. “I’m looking for someone.” The woman’s smile widened. “Aren’t we all?” Quinn sidestepped her, her eyes locked on Herrera’s retreating back. He was heading toward a stall at the far end of the platform, where a man with a face like a skull wrapped in parchment was arranging what looked like bones into
intricate
patterns. Herrera leaned in, his voice too low for Quinn to hear. The skull-faced man nodded, then reached beneath the counter and pulled out a small, cloth-wrapped bundle. Quinn’s
stomach dropped
. *Drugs. Or worse.* She broke into a run, shoving past a group of figures in tattered coats. Herrera turned just as she reached him, his eyes widening. He didn’t have time to react. Quinn grabbed his arm, her fingers digging into his scarred forearm. “You’re under arrest,” she snapped. Herrera’s expression twisted—anger, fear, something else she couldn’t name. “You don’t understand what you’re doing.” “I understand enough.” She twisted his arm behind his back, her other hand reaching for her cuffs. “You’re coming with me.” The skull-faced man let out a hiss, his fingers curling around the bundle. “She doesn’t belong here.” Quinn ignored him, her focus locked on Herrera. “Move.” Herrera didn’t resist. But as she turned to drag him back the way she’d come, the crowd parted. A figure stepped forward, tall and broad-shouldered, his presence commanding enough to silence the chatter around them. His face was half-hidden in shadow, but Quinn could see the sharp angle of his jaw, the cold
glint
of his eyes. “Detective Quinn,” the man said, his voice smooth, amused. “I was wondering when you’d find your way down here.” Quinn’s
blood ran cold
. She
knew that voice
. She’d heard it in her nightmares. Silas. The owner of *The Raven’s Nest*. The man who’d been one step ahead of her for months. The man who’d been there the night Morris died. Herrera stiffened in her grip. “Silas, don’t—” Silas held up a hand, silencing him. His gaze never left Quinn. “You’ve been a thorn in my side for a long time, Detective. But I’ll give you this—you’ve got nerve.” Quinn’s fingers tightened around her cuffs. “Step aside. This doesn’t concern you.” Silas chuckled, the sound low and dark. “Everything down here concerns me.” He took a step closer, his boots clicking against the platform. “You don’t know what you’re meddling with. This isn’t your world. It’s not even close.” Quinn’s pulse roared in her ears. She could feel the
weight
of the crowd’s gaze on her, the press of something unseen, something *wrong*. But she
wasn’t backing
down. Not now. “Then enlighten me,” she said, her voice steady. “Because I’m not leaving without him.” Silas studied her for a long moment. Then,
slowly
, he smiled. “Brave words, Detective. But bravery won’t save you down here.” Quinn didn’t answer. She didn’t have to. She’d made her choice the moment she followed Herrera into the dark. And she
wasn’t turning
back.
created_at
"2026-02-17T02:39:33.475857+00:00"
2/17/2026, 2:39:33 AM
model
"mistralai/mistral-small-creative-20251216"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
260
moderation_latency
(null)
generation_time
11350
tokens_prompt
914
tokens_completion
2386
native_tokens_prompt
840
native_tokens_completion
2070
native_tokens_completion_images
(null)
native_tokens_reasoning
0
native_tokens_cached
320
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"stop"
usage
0.000705
router
(null)
provider_responses
0
id
"82d179852be14963b151c2d84728ba45"
status
200
is_byok
false
latency
260
endpoint_id
"0118a65e-79f9-48b0-924e-38c4a41378e1"
provider_name
"Mistral"
model_permaslug
"mistralai/mistral-small-creative-20251216"
api_type
"completions"
id
"gen-1771295961-XkIfwkQknEwSVD6iCAEz"
upstream_id
"82d179852be14963b151c2d84728ba45"
total_cost
0.000705
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Mistral"
Evaluation details
Result
Evaluator
Details
Meta Data
50.0000%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
4
adverbTagCount
1
adverbTags
0
"he called over his shoulder, his accent thick with something that wasn’t just Spanish [just]"
93.4167%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1519
totalAiIsmAdverbs
1
found
0
adverb
"slowly"
count
1
highlights
0
"slowly"
100.0000%
AI-ism character names
Target: 0 AI-default names (17 tracked, −20% each)
codexExemptions
(empty)
found
(empty)
100.0000%
AI-ism location names
Target: 0 AI-default location names (33 tracked, −20% each)
codexExemptions
(empty)
found
(empty)
60.5003%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1519
totalAiIsms
6
found
0
word
"glint"
count
1
1
word
"intricate"
count
1
2
word
"weight"
count
1
3
word
"footsteps"
count
1
4
word
"echoing"
count
1
5
word
"etched"
count
1
highlights
0
"glint"
1
"intricate"
2
"weight"
3
"footsteps"
4
"echoing"
5
"etched"
66.6667%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
2
maxInWindow
2
found
0
label
"blood ran cold"
count
1
1
label
"stomach dropped/sank"
count
1
highlights
0
"blood ran cold"
1
"stomach dropped"
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
135
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
0
hedgeCount
0
narrationSentences
135
filterMatches
(empty)
hedgeMatches
(empty)
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
2
totalSentences
151
matches
0
"moved* that night"
1
"knew that voice"
100.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
46
mean
32.54
std
26.94
cv
0.828
sampleLengths
0
70
1
84
2
59
3
38
4
107
5
19
6
77
7
7
8
69
9
16
10
39
11
29
12
17
13
28
14
77
15
51
16
17
17
97
18
12
19
53
20
27
21
10
22
7
23
7
24
71
25
6
26
41
27
5
28
15
29
21
30
17
31
9
32
57
33
19
34
14
35
1
36
26
37
7
38
31
39
12
40
38
41
31
42
14
43
21
44
19
45
5
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
2
totalSentences
135
matches
0
"was crouched"
1
"was abandoned"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
11
totalVerbs
246
matches
0
"wasn’t losing"
1
"was *hunting"
2
"was trying"
3
"wasn’t climbing"
4
"was doing"
5
"was starting"
6
"wasn’t turning"
7
"was heading was arranging"
8
"wasn’t backing"
9
"wasn’t turning"
94.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
1381
adjectiveStacks
1
stackExamples
0
"suspect—tall, lean, moving"
adverbCount
39
adverbRatio
0.028240405503258507
lyAdverbCount
4
lyAdverbRatio
0.002896451846488052
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
151
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
151
mean
9.91
std
6.67
cv
0.672
sampleLengths
0
16
1
5
2
23
3
24
4
2
5
8
6
34
7
17
8
6
9
19
10
16
11
15
12
4
13
4
14
2
15
15
16
3
17
8
18
10
19
6
20
6
21
8
22
27
23
9
24
34
25
17
26
8
27
12
28
15
29
4
30
7
31
16
32
18
33
11
34
12
35
13
36
3
37
1
38
3
39
4
40
16
41
16
42
17
43
16
44
10
45
6
46
7
47
8
48
11
49
13
42.0530%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
12
diversityRatio
0.2781456953642384
totalSentences
151
uniqueOpeners
42
0.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
4
fancyCount
3
fancyTags
0
"he called over his shoulder, his accent thick with something that wasn’t just Spanish (call does be not just)"
1
"she snapped (snap)"
2
"the man said, his voice smooth, amused (say, amuse)"
82.7433%