NC Bench
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Run: 2026-02-17-01KHMQF2TT8JRNQVP5P3SPBSHT
Run Details
Model:
Mistral Small Creative
Test:
Bad Writing Habits
Scenario:
Mystery: examining a crime scene
Duration:
9.9s
Cost:
$0.000678
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 smelled of damp concrete and something older—something that clung to the back of Harlow Quinn’s throat like the ghost of a bad decision. Her torch cut a pale arc through the dark, illuminating the peeling posters of long-forgotten theatre productions and the rusted tracks that hadn’t seen a train in decades. The air hummed, not with the usual London vibration of traffic and life, but with something quieter, something that made the hairs on the back of her neck stand at attention. She adjusted the strap of her shoulder bag, the
weight
of her service weapon a familiar comfort against her ribs. The call had come in an hour ago—*unusual circumstances, possible homicide*—and the address had been a dead end until she’d dug deeper. The Veil Market. A name that didn’t appear on any official maps, whispered about in the corners of pubs where the regulars had seen too much. She’d heard the rumors, of course. Supernatural black market, enchanted goods, the kind of place that made her skin itch just thinking about it. But rumors didn’t solve cases. Evidence did. And the evidence here was all wrong. Detective Constable Eva Kowalski stood near the edge of the platform, her round glasses catching the torchlight as she turned. She looked small in the vastness of the station, her curly red hair a
stark
contrast to the grimy walls. A worn leather satchel was slung over her shoulder, bulging with books—because of course Eva had brought *books* to a crime scene. Harlow exhaled through her nose. “You’re not supposed to be here.” Eva didn’t flinch. “Neither are you, technically. This isn’t exactly a sanctioned investigation.” Harlow stepped closer, her boots crunching on something brittle—glass, maybe, or bone. She didn’t look down. “I got a tip. Anonymous. Said there was a body down here, something the Met wouldn’t touch with a ten-foot pole.” She gestured to the platform, where a chalk outline had been hastily drawn around a dark, irregular stain. “But there’s no body. Just this.” Eva followed her gaze, her fingers twitching toward the satchel before she caught herself. “The stain’s fresh. Less than twelve hours old, I’d guess. And look—” She crouched, careful not to disturb the outline, and pointed at the edge of the platform. “Scuff marks. Like something was dragged. Or *someone*.” Harlow crouched beside her, her sharp jaw tightening. The scuff marks were there, all right—deep grooves in the dust, as if heels had dug in. But the rest of the scene didn’t add up. No blood spatter. No signs of a struggle beyond those marks. And the stain itself was too neat, too *contained*, like whatever had bled here had done so in one sudden, violent rush. “No weapon. No shell casings. No signs of a fight.” She stood, her
watch
glinting
as she checked the time. “And no body.” Eva adjusted her glasses, her green eyes sharp behind the lenses. “Unless it wasn’t a body.” Harlow shot her a look. “You’re not seriously suggesting—” “Supernatural rift,” Eva interrupted, pulling a small brass compass from her satchel. The casing
was etched
with sigils, the needle wobbling erratically before settling on a point just beyond the platform. “This is a Veil Compass. It points to the nearest rift or portal. And right now, it’s pointing *there*.” She nodded toward a shadowed alcove where the tracks disappeared into darkness. Harlow’s fingers twitched toward her weapon. “You brought a *compass* to a crime scene.” “It’s not just a compass,” Eva said, as if that explained anything. “And before you lecture me, I *told* you this place wasn’t natural. The Veil Market moves every full moon. It’s not supposed to be here. Not *stay* here.” Harlow ignored the prickle of unease at the base of her skull. “So what are you saying? The victim was dragged into some kind of… portal?” Eva hesitated. “Or *through* one. The Market deals in more than just black-market goods. It’s a nexus. A crossing point. If someone died here, their body might not be in this world anymore.” Harlow exhaled
sharply
. “That’s not how homicide investigations work.” “No,” Eva agreed, tucking a curl behind her ear. “But this isn’t a normal homicide.” Harlow turned away, her torch sweeping over the walls. The station was too quiet. No rats scuttling in the dark. No distant drip of water. Just the
oppressive
weight
of something *waiting*. Her gaze snagged on a symbol carved into the tile near the alcove—a jagged, uneven mark, like a child’s attempt at a star. She crouched, running her fingers over it. The edges were sharp, fresh. “This wasn’t here long.” Eva joined her, her breath hitching. “That’s a Shade sigil. They use them to mark territory. Or warnings.” Harlow’s stomach twisted. She’d heard the name before—whispers in interrogation rooms, the kind of thing that made suspects clam up faster than a guilty plea. “You’re saying the Shades were here.” “Or someone who deals with them.” Eva’s voice was tight. “The Market isn’t just a place, Harlow. It’s a *bargain*. And bargains have consequences.” Harlow stood, her mind racing. The anonymous tip. The missing body. The sigil. None of it fit. None of it *should* fit. But the evidence was there, staring her in the face, and she’d spent eighteen years learning to trust the evidence, no matter how impossible it seemed. She turned back to the stain, her torchlight catching something
glinting
near the edge. A button. Small, brass, half-buried in the dust. She picked it up, rolling it between her fingers. “This wasn’t here before.” Eva leaned in. “It’s not from a coat. Too small. Maybe a cufflink?” Harlow’s pulse kicked up. “Or a uniform.” She thought of the scuff marks, the drag pattern. Someone had
been taken
. *Dragged*. And if Eva was right, they hadn’t just
been taken
*somewhere*. They’d
been taken
*somewhere else*. She pocketed the button, her mind already piecing together the next steps. “We need to canvas the area. See if anyone saw anything. And I want to know everything you’ve got on the Shades. Their dealings, their territory, their *warnings*.” Eva’s fingers tightened around the strap of her satchel. “Harlow, if the Shades are involved—” “Then we’re dealing with something bigger than a missing body,” Harlow finished, her voice steady. “But that doesn’t change the fact that someone died here. And I *will* find out who.” Eva studied her for a long moment, then nodded. “There’s a contact. A woman who runs a stall in the Market—when it’s open. She deals in information. If anyone knows what happened here, it’s her.” Harlow’s jaw tightened. “Then we find her.” Eva hesitated. “It’s not that simple. The Market doesn’t just *let* people in. You need a bone token. And even then, you have to know the right people.” Harlow met her gaze, unflinching. “Then we get a token.” Eva exhaled, her fingers drifting to the compass in her satchel. “You don’t understand. The Market isn’t just dangerous. It’s *hungry*. It takes things. Memories. Time. Sometimes, it doesn’t give them back.” Harlow didn’t look away. “I’ve lost people before, Eva. I’m not losing this one.” The words hung between them, heavy with the
weight
of things unsaid. Eva’s green eyes
flickered
with something—fear, maybe, or the ghost of an old argument. But she didn’t push back. Instead, she reached into her satchel and pulled out a small, yellowed bone, carved with the same jagged sigil from the wall. “I have a token. But we go in together. And we don’t stay long.” Harlow took the bone, her fingers curling around it. It was warm, almost pulsing, like something alive. She swallowed the bile rising in her throat. “Together.” Eva nodded, her voice
barely above a whisper
. “Then let’s go find your missing body.” The torchlight
flickered
as they turned toward the alcove, the Veil Compass needle trembling in Eva’s grip. The air grew thicker, heavier, like the moment before a storm breaks. Harlow’s hand rested on her weapon, her military precision honed to a razor’s edge. Whatever
was waiting
in the dark, she’d face it. She always did. Because the evidence didn’t lie. And neither did she.
created_at
"2026-02-17T02:39:38.572849+00:00"
2/17/2026, 2:39:38 AM
model
"mistralai/mistral-small-creative-20251216"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
230
moderation_latency
(null)
generation_time
9635
tokens_prompt
923
tokens_completion
2206
native_tokens_prompt
875
native_tokens_completion
1968
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
0.0006779
router
(null)
provider_responses
0
id
"ac6f81fe83744dc0b6821586fb0c2a26"
status
200
is_byok
false
latency
230
endpoint_id
"0118a65e-79f9-48b0-924e-38c4a41378e1"
provider_name
"Mistral"
model_permaslug
"mistralai/mistral-small-creative-20251216"
api_type
"completions"
id
"gen-1771295968-8RleNmVpDMctWsgHiQIN"
upstream_id
"ac6f81fe83744dc0b6821586fb0c2a26"
total_cost
0.0006779
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Mistral"
Evaluation details
Result
Evaluator
Details
Meta Data
100.0000%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
4
adverbTagCount
0
adverbTags
(empty)
85.4651%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1376
totalAiIsmAdverbs
2
found
0
adverb
"sharply"
count
1
1
adverb
"barely above a whisper"
count
1
highlights
0
"sharply"
1
"barely above a whisper"
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)
27.3256%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1376
totalAiIsms
10
found
0
word
"flickered"
count
2
1
word
"glinting"
count
2
2
word
"oppressive"
count
1
3
word
"stark"
count
1
4
word
"weight"
count
3
5
word
"etched"
count
1
highlights
0
"flickered"
1
"glinting"
2
"oppressive"
3
"stark"
4
"weight"
5
"etched"
100.0000%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
0
maxInWindow
0
found
(empty)
highlights
(empty)
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
94
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
1
hedgeCount
0
narrationSentences
94
filterMatches
0
"watch"
hedgeMatches
(empty)
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
0
totalSentences
125
matches
(empty)
100.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
40
mean
34.1
std
25.09
cv
0.736
sampleLengths
0
86
1
99
2
7
3
73
4
13
5
61
6
50
7
90
8
16
9
9
10
62
11
14
12
40
13
26
14
33
15
9
16
15
17
71
18
18
19
31
20
24
21
48
22
35
23
13
24
37
25
40
26
15
27
31
28
35
29
7
30
28
31
10
32
32
33
14
34
67
35
26
36
15
37
55
38
5
39
4
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
4
totalSentences
94
matches
0
"was etched"
1
"been taken"
2
"been taken"
3
"been taken"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
1
totalVerbs
152
matches
0
"was waiting"
100.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
935
adjectiveStacks
0
stackExamples
(empty)
adverbCount
37
adverbRatio
0.039572192513368985
lyAdverbCount
5
lyAdverbRatio
0.0053475935828877
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
125
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
125
mean
10.91
std
8.21
cv
0.752
sampleLengths
0
27
1
28
2
31
3
20
4
22
5
3
6
23
7
6
8
18
9
5
10
2
11
7
12
20
13
20
14
22
15
5
16
6
17
3
18
10
19
12
20
4
21
39
22
6
23
14
24
28
25
8
26
8
27
17
28
9
29
3
30
8
31
22
32
20
33
3
34
11
35
5
36
5
37
4
38
12
39
19
40
31
41
6
42
8
43
12
44
28
45
12
46
14
47
2
48
31
49
3
44.4000%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
7
diversityRatio
0.28
totalSentences
125
uniqueOpeners
35
0.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
4
fancyCount
4
fancyTags
0
"Eva interrupted, pulling a small brass compass from her satchel (interrupt, pull)"
1
"Eva said, as if that explained anything (say, explain)"
2
"Eva agreed, tucking a curl behind her ear (agree, tuck)"
3
"Harlow finished, her voice steady (finish)"
85.7171%