NC Bench
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Run: 2026-02-17-01KHMQGP6EHNBGRW0M7V0YZ93S
Run Details
Model:
Mistral Small Creative
Test:
Bad Writing Habits
Scenario:
Mystery: examining a crime scene
Duration:
11.3s
Cost:
$0.000741
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
Messages
Meta
AI
The abandoned Tube station reeked of damp concrete and something older, something that clung to the back of Harlow Quinn’s throat like a bad memory. She adjusted the strap of her shoulder bag, the
weight
of her service pistol a familiar comfort against her ribs. The beam of her torch cut through the gloom, illuminating the peeling posters of long-forgotten ad campaigns—*Visit the British Empire Exhibition!*—their edges curled like dead leaves. The air hummed with an unnatural stillness, the kind that made the hairs on her arms stand on end. “You’re late,” Eva Kowalski said, not looking up from where she crouched beside the body. Her red curls were a wild halo in the torchlight, her round glasses reflecting the glow as she adjusted them with a gloved hand. The leather satchel at her feet was half-unzipped, a stack of yellowed books spilling out like guts. Harlow exhaled through her nose. “Traffic. And the *location* didn’t help.” She stepped
carefully
over a rusted track, her boots crunching on something brittle—glass, maybe, or bone. The station had
been sealed
off for decades, but the graffiti on the walls was fresh, jagged symbols that made her eyes ache if she stared too long. “What’ve we got?” Eva finally looked up, her green eyes sharp behind the lenses. “Male, early thirties. No ID, but the tattoo on his wrist matches the description of a known Veil Market dealer.” She gestured to the corpse with a gloved hand. The man lay sprawled on his back, his coat splayed open like broken wings. His skin was waxy, his lips blue, but it wasn’t the lividity that made Harlow’s stomach clench—it was the way his fingers
were curled
, as if he’d been trying to claw his way out of something. Harlow crouched beside him, her knee popping. The torchlight caught the
glint
of something metallic in his fist. She pried his fingers open with a pen from her pocket. A small brass compass, its face
etched
with sigils, its needle spinning wildly even as she held it still. The patina on the casing was green with age, but the mechanism inside whirred with eerie precision. “Veil Compass,” Eva murmured. “Points to rifts. Or portals. Or whatever the hell you want to call them.” Harlow didn’t answer. She set the compass down on the concrete beside the body and reached for the man’s other hand. His sleeve
was rolled
up, revealing a series of fresh, precise cuts along his forearm—too clean to be defensive wounds. They looked like *measurements*. “Alchemy,” Eva said, as if reading her mind. “He was scribing a sigil. Probably trying to stabilize a rift.” Harlow’s jaw tightened. “And?” “And it went wrong.” Eva’s voice was matter-of-fact, but her fingers twitched toward the satchel, where a notebook peeked out, its pages filled with frantic scribbles. “The energy backlash would’ve liquefied his insides. Hence the…” She waved a hand at the body. “Mess.” Harlow stood abruptly, her torch sweeping over the scene. The station was a graveyard of discarded things—rusted carts, shattered tiles, the skeletal remains of old vending machines. But her gaze snagged on something else: a trail of dark,
glistening
droplets leading away from the body, toward the far end of the platform. Not blood. Something thicker. *Oil? Mercury?* She followed it, her boots silent on the concrete. The droplets led to a section of wall where the tiles had
been pried
away, revealing a jagged hole no larger than a dinner plate. The edges of the hole pulsed faintly, like a slow, uneven heartbeat. Harlow’s breath hitched. She’d seen this before—three years ago, in the warehouse where Morris had died. The same sickly, flickering light. The same *wrongness* in the air. “Quinn,” Eva called, her voice tight. “Don’t.” Harlow ignored her. She reached out, her fingers hovering just above the hole. The air around it warped, like heat rising off pavement. A whisper slithered into her ear—no, not a whisper. A *voice*. Low. Guttural. Speaking in a language that made her teeth ache. She jerked her hand back. “It’s a rift,” Eva said,
suddenly
beside her. “A small one. Probably why the compass was spinning. It’s unstable.” Harlow’s pulse hammered in her throat. “And the dealer?” “He was trying to close it.” Eva’s fingers dug into her satchel, pulling out a small, leather-bound journal. She flipped it open, revealing pages covered in diagrams and frantic notes. “He was part of a group—call themselves the *Hollow Veil*. They’ve been buying up old Veil Market relics, trying to patch the tears before they get worse.” Harlow’s laugh was sharp. “And you *believe* that?” Eva’s green eyes flashed. “I *researched* it. There’s a pattern, Quinn. Rifts opening in places where the Market used to be. Like the city’s *remembering* them.” Harlow turned back to the hole, her reflection
wavering
in its unnatural light. “So what happened here? He mess up the spell?” “No.” Eva’s voice was quiet. “He was *interrupted*.” Harlow’s
blood ran cold
. She followed Eva’s gaze to the ground near the hole. A boot print. Fresh. Too large to be the dealer’s. “Someone else was here,” Eva said. “Someone who didn’t want the rift closed.” Harlow crouched, her torch illuminating the print. The tread was deep, the edges sharp—military issue. Her stomach twisted. She
knew that print
. She’d seen it before, in the warehouse. In the mud outside Morris’s car. She stood abruptly, her hand going to her pistol. “We’re not alone.” Eva’s breath hitched. “Quinn—” A sound
echoed
through the station—a *click*, like a hammer cocking. Harlow spun, her torch sweeping over the darkness. Nothing. Just shadows. Just the hum of the rift, the whisper of the voice in her ear. Then, from the far end of the platform, a figure stepped into the light. Tall. Broad-shouldered. Wearing a long coat that flapped like a shroud in the stagnant air. His face
was obscured
by the brim of a hat, but Harlow didn’t need to see it. She *knew* him. “Evening, Detective,” the man said, his voice a gravelly purr. “Miss me?” Harlow’s finger tightened on the trigger. “Morris.” The name
hung in the air
like a curse. Eva made a choked sound. “That’s—” “Not possible,” Harlow finished, her voice steady despite the roar in her ears. Morris was dead. She’d *seen* him die. She’d held his hand as the life bled out of him, his last words a garbled warning about *them*—the things in the dark. But here he was. Standing. Breathing. Smiling. Morris tilted his head, the brim of his hat casting his face in shadow. “You always were a terrible liar, Harlow.” She didn’t lower the gun. “What the hell are you?” He chuckled, low and dark. “The same as you, Detective. Just… *more*.” He took a step forward, his boot crushing something beneath it—a bone token, its surface
etched
with the same sigils as the compass. “The question is, what are *you* going to do about it?” Harlow’s mind raced. The rift. The dealer. The boot print. The *voice*. Morris wasn’t here to help. He was here to *stop* them. She exhaled, slow and controlled. “Eva. Get behind me.” Eva didn’t argue. She scrambled back, her satchel clutched to her chest, her eyes wide behind her glasses. Harlow kept the torch trained on Morris, her pistol steady. “You killed him,” she said, nodding toward the dealer’s body. “Why?” Morris sighed, as if disappointed. “Because he was *weak*. The Veil’s tearing, Harlow. And when it does, the things on the other side won’t care about your little rules. Your little *laws*.” He spread his hands, the gesture almost apologetic. “Someone’s got to keep the balance.” “The balance?” Harlow’s laugh
was bitter
. “You call *murder* balance?” “I call it *survival*.” His voice dropped, the words slithering into her ears like serpents. “You felt it, didn’t you? The pull. The *hunger*. It’s in you too, Harlow. You just don’t know it yet.” She didn’t flinch. “I know enough.” Morris’s smile widened. “Then you know this isn’t over.” He turned, his coat billowing as he melted back into the shadows. The rift behind them pulsed, its light flickering like a dying star. Harlow didn’t lower the gun until the darkness swallowed him whole. Eva’s breath came in ragged gasps. “Quinn, what the *hell* was that?” Harlow holstered her pistol, her hands steady despite the adrenaline coursing through her veins. She crouched beside the dealer’s body, her torch illuminating the compass once more. The needle spun wildly, pointing not at the rift, but at the hole in the wall where Morris had vanished. She picked it up, her fingers tightening around the brass casing. “That,” she said quietly, “was a warning.” Eva swallowed hard. “For what?” Harlow stood, her gaze locked on the darkness where Morris had disappeared. “For the storm.”
created_at
"2026-02-17T02:40:32.934455+00:00"
2/17/2026, 2:40:32 AM
model
"mistralai/mistral-small-creative-20251216"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
269
moderation_latency
(null)
generation_time
10974
tokens_prompt
923
tokens_completion
2399
native_tokens_prompt
875
native_tokens_completion
2177
native_tokens_completion_images
(null)
native_tokens_reasoning
0
native_tokens_cached
832
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
0.0007406
router
(null)
provider_responses
0
id
"6d388e39b1994616a5804c4b1cc45905"
status
200
is_byok
false
latency
269
endpoint_id
"0118a65e-79f9-48b0-924e-38c4a41378e1"
provider_name
"Mistral"
model_permaslug
"mistralai/mistral-small-creative-20251216"
api_type
"completions"
id
"gen-1771296020-y0ltkOXHTG0Y3YRpBso2"
upstream_id
"6d388e39b1994616a5804c4b1cc45905"
total_cost
0.0007406
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Mistral"
Evaluation details
Result
Evaluator
Details
Meta Data
33.3333%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
10
adverbTagCount
3
adverbTags
0
"Eva said, suddenly beside her [suddenly]"
1
"the man said, his voice a gravelly purr [gravelly]"
2
"she said quietly [quietly]"
86.5229%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1484
totalAiIsmAdverbs
2
found
0
adverb
"carefully"
count
1
1
adverb
"suddenly"
count
1
highlights
0
"carefully"
1
"suddenly"
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)
52.8302%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1484
totalAiIsms
7
found
0
word
"glistening"
count
1
1
word
"glint"
count
1
2
word
"wavering"
count
1
3
word
"weight"
count
1
4
word
"echoed"
count
1
5
word
"etched"
count
2
highlights
0
"glistening"
1
"glint"
2
"wavering"
3
"weight"
4
"echoed"
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
"hung in the air"
count
1
highlights
0
"blood ran cold"
1
"hung in the air"
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
1
narrationSentences
130
matches
0
"was bitter"
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
0
hedgeCount
0
narrationSentences
130
filterMatches
(empty)
hedgeMatches
(empty)
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
1
totalSentences
162
matches
0
"knew that print"
100.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
58
mean
25.31
std
21.94
cv
0.867
sampleLengths
0
90
1
56
2
58
3
90
4
65
5
18
6
45
7
19
8
4
9
43
10
58
11
73
12
7
13
45
14
5
15
19
16
9
17
57
18
8
19
26
20
22
21
8
22
24
23
13
24
35
25
12
26
4
27
36
28
14
29
35
30
12
31
7
32
9
33
6
34
43
35
7
36
21
37
10
38
46
39
12
40
5
41
6
42
9
43
18
44
21
45
46
46
10
47
35
48
6
49
9
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
5
totalSentences
130
matches
0
"been sealed"
1
"were curled"
2
"was rolled"
3
"been pried"
4
"was obscured"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
0
totalVerbs
198
matches
(empty)
94.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
1170
adjectiveStacks
1
stackExamples
0
"small, leather-bound journal."
adverbCount
34
adverbRatio
0.02905982905982906
lyAdverbCount
11
lyAdverbRatio
0.009401709401709401
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
162
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
162
mean
9.06
std
7.69
cv
0.848
sampleLengths
0
25
1
20
2
26
3
19
4
15
5
24
6
17
7
5
8
22
9
28
10
3
11
11
12
29
13
14
14
36
15
7
16
11
17
11
18
19
19
17
20
4
21
14
22
3
23
18
24
20
25
4
26
8
27
11
28
3
29
1
30
26
31
16
32
1
33
9
34
18
35
25
36
2
37
2
38
1
39
1
40
9
41
25
42
12
43
3
44
13
45
5
46
6
47
6
48
1
49
3
45.8848%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
14
diversityRatio
0.3271604938271605
totalSentences
162
uniqueOpeners
53
0.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
10
fancyCount
7
fancyTags
0
"Eva Kowalski said, not looking up from where she crouched beside the body (say, does not look up crouch)"
1
"Eva murmured (murmur)"
2
"Eva said, as if reading her mind (say, read)"
3
"the man said, his voice a gravelly purr (say, gravelly purr)"
4
"Harlow finished, her voice steady despite the roar in her ears (finish)"
5
"she said, nodding toward the dealer’s body (say, nod)"
6
"she said quietly (say quietly)"
81.1316%