NC Bench
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About
Tests
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Vendors
Run: 2026-02-17-01KHMMC98B066YFRC4ET985EVW
Run Details
Model:
Cohere Command R+ (Aug. 2024)
Test:
Bad Writing Habits
Scenario:
Mystery: examining a crime scene
Duration:
1m 57s
Cost:
$0.017212
Provider:
Cohere
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 Veil Market, with its pulsating energy, had settled into the shadows of the abandoned Camden Tube station. The ancient platform, usually deserted, buzzed with a different kind of life tonight. The air crackled with whispers, negotiations, and the clatter of coins as deals
were made
and secrets exchanged. Amongst this
clandestine
gathering, a body lay still, the sole silent occupant in a place where even silence had a price. Detective Harlow Quinn made her way through the maze of stalls and makeshift shops with the sure-footedness of a seasoned veteran. Her sharp eyes, accustomed to noticing e
very
detail, scanned the scene, taking in the grotesque contrast between the bustling market and the lifeless form at its center. The victim was a young man, no older than thirty, his body contorted in an unnatural position, as if some unseen force had wrenched him from his core. Quinn knelt down, pulling on a pair of latex gloves as she did so, and began her initial examination. The man's eyes were open, fixed in a perpetual state of horrified realization. A thin line of drool had dried at the corner of his mouth, adding a touch of pathos to the grim scene. Harlow gingerly checked his pockets, finding a wallet with a few crisp pounds, a token with an
intricate
bone design, and a small brass compass she instantly recognized as a Veil Compass. Stuffing the evidence bags into the pocket of her coat, she pulled out her phone, taking care not to disturb any latent prints, and snapped a few photos of the body in situ. Her sharp
jaw clenched
as she noted the position of the body and the clear signs of struggle on the victim's face. This was no simple mugging or accident. "What's your take on this, Quinn?" She hadn't heard him approach, but the gruff voice of her colleague, DCI Sinclair, pulled her from her observations. Sinclair, a burly man with a rumpled suit and a perpetually dissatisfied air, stood over her, his bulk blocking the ambient glow of the market. He was a good cop, she knew, just one who preferred desk work to field investigations. "Too soon to tell, sir," she replied, standing up to face him. She was as tall as many men, and her military bearing and cropped salt-and-pepper hair gave her a no-nonsense air that commanded respect. "But something's off. It's hard to say just yet, but this doesn't feel like a natural death to me." Sinclair huffed, his breath clouding in the cool underground air. "Come on, Quinn, you know as well as I
do that this
is a black market. People get hurt here. It's the nature of the beast. He probably got in a fight over a deal gone bad and took a beating he couldn't walk away from. End of story." She shook her head, her eyes narrowing. Her years as a detective had honed her instincts, and her gut
was sending
up flares of warning. "There's more to it than that. Look at the position of the body. It's staged, like he's reaching for something." Sinclair squinted, his skepticism plain in his frown. "Reaching for his wallet, maybe. More likely, his throat was just too swollen to let him breathe after some muscle smashed it in." A voice, high and nervous, called out from the crowd. "Actually, he was choking on his own tongue. I tried to help him. Tried to perform the Heimlich maneuver, but..." A pale young man with a nervous twitch stepped forward, pushing up his glasses as he did. His voice
was filled
with the helpless horror of someone who had just witnessed a tragedy. Quinn turned, her keen interest piqued. "Were you here when it happened?" He nodded vigorously, sending his glasses sliding down his nose. "Yeah, I... uh, saw it all. It was horrible. One second he was haggling with a vendor over some... stuff, and the next, he was on the ground, convulsing. His eyes were rolling back in his head. He started foaming at the mouth." His voice cracked, and his words trailed off as he shoved his hands into his pockets, his eyes darting around as if he
were reliving
the horror. "And you?" Quinn turned her keen eyes on the vendor
being referenced
. "What do you have to say?" The vendor, a broad-shouldered man in an oil-stained apron, shrugged with practiced nonchalance. "He came to me wanting some Dark Moon Elixir. I sell charms, my own blends, nothing illegal." "Elixirs are unregulated potions," DCI Sinclair chimed in. "Could have caused some adverse effects." The vendor held up his hands. "Hey, I warned him. These things are powerful. Not meant for amateurs. Always tell them to go slow, but they never listen." Quinn's gaze
flicked
between the nervous bystander and the defensive vendor, her mind working through the puzzle. "What were his last words?" The young man's face crumpled with the memory. "He kept saying 'Vale - something,' I think. Or 'veil' maybe?" Quinn's
eyes narrowed
as the pieces
began to
fall into place. "Veil. He meant the Veil." She pulled out the compass, its verdigris patina
gleaming
in the low light. "He was lost, trying to find his way home, and this was his guide. It's a Veil Compass, attuned to supernatural energy, crafted by Shade artisans. Very rare and expensive. Not the sort of thing you just drop." Sinclair grunted, crossing his arms. "So, you're saying a monster popped through an interdimensional portal and killed him? Come on, Quinn, let's not get carried away. This is likely a smuggling deal turned sour. Occam's razor, Quinn. Let's not make this more complicated than it is." Quinn, ever precise, noted the time on her worn leather
watch
. "Sunrise is in an hour. If you're right, then this market will disappear, and these folk with it. If I'm right, then we have an interdimensional homicide on our hands. And this entire market is our crime scene. Let's get e
very
one's details and start some serious questioning." Sinclair sighed, the
weight
of the investigation evident on his face. "Fine, have your fun. But let me know if you find this monster of yours. Might just need to lock you up for hallucinating him on duty." Ignoring Sinclair's barbs, Quinn set to work with the efficiency of a well-oiled machine, interviewing the nervous bystander, the skeptical vendor, and e
very
one else she could find connected to the incident. She left no clue unturned, no lead unfollowed. As the sun peeked over the horizon, signaling the market's impending disappearance, Detective Harlow Quinn found herself just where she knew she'd be—one step closer to the truth and always ready for the next piece of the puzzle.
created_at
"2026-02-17T01:47:28.431286+00:00"
2/17/2026, 1:47:28 AM
model
"cohere/command-r-plus-08-2024"
app_id
182717
external_user
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streamed
true
cancelled
false
latency
835
moderation_latency
203
generation_time
116889
tokens_prompt
923
tokens_completion
1657
native_tokens_prompt
857
native_tokens_completion
1507
native_tokens_completion_images
(null)
native_tokens_reasoning
0
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
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num_media_completion
0
num_search_results
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origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"stop"
usage
0.0172125
router
(null)
provider_responses
0
id
"e87a417c-40e5-4e68-b4fa-d90ac9a4d78a"
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is_byok
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latency
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endpoint_id
"cd63714a-d459-4806-bdf2-0dfea4f6614c"
provider_name
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model_permaslug
"cohere/command-r-plus-08-2024"
api_type
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cache_discount
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upstream_inference_cost
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provider_name
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Evaluation details
Result
Evaluator
Details
Meta Data
100.0000%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
2
adverbTagCount
0
adverbTags
(empty)
91.1348%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1128
totalAiIsmAdverbs
1
found
0
adverb
"very"
count
1
highlights
0
"very"
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)
46.8085%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1128
totalAiIsms
6
found
0
word
"flicked"
count
1
1
word
"gleaming"
count
1
2
word
"clandestine"
count
1
3
word
"intricate"
count
1
4
word
"jaw clenched"
count
1
5
word
"weight"
count
1
highlights
0
"flicked"
1
"gleaming"
2
"clandestine"
3
"intricate"
4
"jaw clenched"
5
"weight"
66.6667%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
2
maxInWindow
2
found
0
label
"eyes widened/narrowed"
count
1
1
label
"jaw/fists clenched"
count
1
highlights
0
"eyes narrowed"
1
"jaw clenched"
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
43
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
1
hedgeCount
1
narrationSentences
43
filterMatches
0
"watch"
hedgeMatches
0
"began to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
1
totalSentences
60
matches
0
"do that this"
100.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
26
mean
43.12
std
21.95
cv
0.509
sampleLengths
0
70
1
48
2
82
3
94
4
6
5
60
6
54
7
59
8
45
9
31
10
63
11
12
12
53
13
27
14
18
15
30
16
14
17
28
18
22
19
19
20
67
21
46
22
58
23
38
24
39
25
38
86.8217%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
3
totalSentences
43
matches
0
"were made"
1
"was filled"
2
"being referenced"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
2
totalVerbs
106
matches
0
"was sending"
1
"were reliving"
100.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
707
adjectiveStacks
0
stackExamples
(empty)
adverbCount
15
adverbRatio
0.021216407355021217
lyAdverbCount
6
lyAdverbRatio
0.008486562942008486
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
60
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
60
mean
18.68
std
11.24
cv
0.602
sampleLengths
0
18
1
13
2
18
3
21
4
21
5
27
6
28
7
19
8
13
9
22
10
32
11
33
12
22
13
7
14
6
15
19
16
25
17
16
18
12
19
23
20
19
21
10
22
49
23
7
24
18
25
20
26
8
27
23
28
10
29
37
30
16
31
6
32
6
33
10
34
43
35
27
36
12
37
6
38
13
39
17
40
8
41
6
42
6
43
22
44
17
45
5
46
8
47
11
48
11
49
18
85.5556%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
2
diversityRatio
0.5333333333333333
totalSentences
60
uniqueOpeners
32
0.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
2
fancyCount
2
fancyTags
0
"she replied, standing up to face him (reply, stand up face)"
1
"DCI Sinclair chimed in (chime in)"
86.8816%