NC Bench
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Run: 2026-02-17-01KHMMGCPK1C6FSFWC57TKFNR5
Run Details
Model:
Cohere Command R+ (Aug. 2024)
Test:
Bad Writing Habits
Scenario:
Thriller: chase through city streets
Duration:
2m 49s
Cost:
$0.017468
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="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 pounded the pavement, transforming the city's asphalt arteries into
glistening
, treacherous rivers. Detective Harlow Quinn
navigated
the slick sidewalks with a purpose, her gaze slicing through the downpour, searching. Her sharp jawline, emphasized by the
stark
lighting of a nearby streetlamp, showcased the determination that had become her trademark in the Metropolitan Police. The suspect, a man in a dark trench coat, darted ahead, his silhouette fleeting
amidst
the urban jungle. Harlow's
eyes narrowed
, her heart pounding not from the exertion but from the thrill of the chase. Eighteen years in the force hadn't dulled her instincts or the thrill of the hunt. She quickened her pace, her worn leather shoes splashing through puddles as she pursued her prey into an alleyway. The alley was a dim corridor of shadow and discarded refuse, the acrid smell of wet trash permeating the air. Harlow's hand rested on the grip of her sidearm, her fingers itching to draw it, though she held back, knowing the weapon would be of little use in these tight quarters. The man in the trench coat was nowhere to be seen ahead, but a fleeting glimpse of his retreating form was enough to keep her going. As Harlow rounded a corner, she stumbled upon a startling sight. The man she
was pursuing
had vanished, but a door stood ajar, its
intricate
carvings revealing it as an entrance to a different world. A neon green sign above it
flickered
, sending an electric current down her spine. The Raven's Nest. She knew this place from the grapevine—a hidden bar, a haven for the city's underground. A place to start asking questions. Harlow stepped inside, her eyes adjusting to the dim interior lit by scattered candlelight and the soft glow of antique lamps. The walls
were adorned
with maps and black-and-white photos, each one a
testament
to forgotten expeditions or long-lost loved ones. The silence
was broken
only by the patter of rain on the roof and the quiet hum of conversation from patrons seated at tables. A man behind the bar, tall and lean with a shock of gray in his close-cropped hair, looked up at Harlow's approach. "Something stronger than rain on a cold night, miss?" She produced her warrant card, her thumb brushing the Saint Christopher medallion she kept hidden beneath her shirt. "I'm looking for a man. Goes by many names. But you might know him as Tomás Herrera." The bartender's eyebrows rose, his mannerisms shifting from casual barman to something more guarded. "Why the interest in Tomás?" He moved with the fluidity of someone who was not fond of surprises but had learned to roll with them. "He's wanted for questioning in a series of crimes involving supernatural elements," Harlow explained, her voice low and steady. She had grown accustomed to the disbelief and skepticism from witnesses. It came with the territory when you investigated the gray spaces between normal and
otherworldly
. A
flicker
of something like recognition or perhaps fear danced in the bartender's eyes. "Then you're too late. He bolted when he got wind of a visit from your kind." Disappointment coursed through Harlow, but she'd learned not to show frustration. She pulled up a stool, close enough to be intimate, but not close enough to offend. "Then I'm here for a drink. And a story." He poured her a generous measure of something dark and amber, placing it on a coaster
etched
with a map of London's Underground. "Tomás is a good bloke. Always had a soft spot for those everyone else labeled 'less fortunate.' Worked as a medic for the NHS until they fired him for treating patients none of the other paramedics wanted to touch. He couldn't shake his need to help. So he found a calling here, in the Nest, where the boundaries between worlds fade." She regarded him closely. "What do you mean, 'treat patients no one else wanted to touch'?" "Folks who get mixed up in the supernatural mess of London." The bartender's voice lowered to a conspiratorial whisper. "Fae princes with shattered fairy dust addictions. Witches caught on the wrong side of a spell. Every black-market vendor and grifter with a deal gone bad who wander up from Camden on the full moon. This place is where they come when they need someone to patch them up and ask no questions." Harlow's interest piqued. "Do you have a list of your clientele?" A wry smile played at the bartender's lips. "And risk losing my regulars? How about this: I'll point you in the right direction, but you keep Tomás out of it. Deal?" She considered the proposition. On the surface, she
was going
against the code, making deals that hovered in the grays between right and wrong. But this was a world where warrants and chains of evidence meant little when push came to shove. "Deal." Harlow swallowed the burning liquid in her glass, feeling it slide down her throat, warming her from the inside out. She pressed a few bills onto the counter, a payment for services rendered, not an invitation for more questions. "What do I need to access this market?" He leaned in, whispering, "Bone tokens. Half of the clientele would slit your throat for yours, so be careful. They move locations once a month, beneath the next full moon—you know, for added atmosphere. And watch out for The Veil Market's owner, Silas. He's got a temper and a pack of hellhounds." The ring of her mobile phone was like an alarm bell, shattering the quiet tension between them. She fished it out of her pocket. The display showed a familiar number. She pressed it to her ear, one eyebrow raised expectantly at the bartender. "Quinn." The voice on the other end was tinny and distant, the signal fighting against the rainy night. "Quinn, it's McIntosh from Camden. I think I've got a lead on your missing persons case with a supernatural twist." "Go on." Harlow's mind was already running ahead, piecing together the new puzzle, her earlier disappointment momentarily forgotten. "Lady—er, detective—you need to get over here. Just found a body. Male. Looks like we might have our suspect, and I reckon it's going to put your case to bed." She sighed, eyes flicking to the bartender, who was now diligently polishing glasses, his attentive gaze everywhere but on her. "McIntosh, I'm at a loose end. Give me the address, and I'll swing by." As she ended the call, she regarded the bartender with a grim smile. "Seems like one case leads to another." He chuckled. "That's the nature of the business, Detective. Come back when you need a drink. Or someone to point you in the right direction." Harlow
navigated
the streets back to her car, the neon green sign of the Raven's Nest fading into memory as she drove toward her next lead. The night was still young, and there were mysteries to
unravel
and suspects to pursue. And in the back of her mind, the growing realization that some cases defied the traditional rules of engagement, even for a detective with eighteen years of service.
created_at
"2026-02-17T01:50:34.861217+00:00"
2/17/2026, 1:50:34 AM
model
"cohere/command-r-plus-08-2024"
app_id
182717
external_user
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streamed
true
cancelled
false
latency
143
moderation_latency
203
generation_time
168822
tokens_prompt
914
tokens_completion
1780
native_tokens_prompt
831
native_tokens_completion
1539
native_tokens_completion_images
(null)
native_tokens_reasoning
0
native_tokens_cached
0
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
0.0174675
router
(null)
provider_responses
0
id
"46b24232-818c-4b37-a1e1-54661b1e6c2d"
status
200
is_byok
false
latency
143
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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id
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upstream_id
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total_cost
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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)
100.0000%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1197
totalAiIsmAdverbs
0
found
(empty)
highlights
(empty)
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)
0.0000%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1197
totalAiIsms
12
found
0
word
"testament"
count
1
1
word
"flickered"
count
1
2
word
"flicker"
count
1
3
word
"glistening"
count
1
4
word
"otherworldly"
count
1
5
word
"intricate"
count
1
6
word
"stark"
count
1
7
word
"amidst"
count
1
8
word
"etched"
count
1
9
word
"navigated"
count
2
10
word
"unravel"
count
1
highlights
0
"testament"
1
"flickered"
2
"flicker"
3
"glistening"
4
"otherworldly"
5
"intricate"
6
"stark"
7
"amidst"
8
"etched"
9
"navigated"
10
"unravel"
100.0000%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
1
maxInWindow
1
found
0
label
"eyes widened/narrowed"
count
1
highlights
0
"eyes narrowed"
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
52
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
0
hedgeCount
0
narrationSentences
52
filterMatches
(empty)
hedgeMatches
(empty)
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
0
totalSentences
69
matches
(empty)
86.6276%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
27
mean
44
std
19.94
cv
0.453
sampleLengths
0
55
1
69
2
77
3
73
4
65
5
31
6
35
7
39
8
45
9
30
10
36
11
84
12
16
13
72
14
11
15
31
16
43
17
47
18
52
19
44
20
37
21
18
22
30
23
34
24
20
25
25
26
69
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
2
totalSentences
52
matches
0
"were adorned"
1
"was broken"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
2
totalVerbs
120
matches
0
"was pursuing"
1
"was going"
94.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
803
adjectiveStacks
1
stackExamples
0
"long-lost loved ones."
adverbCount
15
adverbRatio
0.0186799501867995
lyAdverbCount
6
lyAdverbRatio
0.007471980074719801
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
69
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
69
mean
17.22
std
10.8
cv
0.627
sampleLengths
0
14
1
17
2
24
3
18
4
17
5
15
6
19
7
20
8
31
9
26
10
11
11
24
12
14
13
3
14
15
15
6
16
21
17
20
18
24
19
22
20
9
21
18
22
17
23
14
24
25
25
19
26
11
27
15
28
14
29
16
30
11
31
16
32
9
33
23
34
61
35
4
36
12
37
19
38
53
39
3
40
8
41
8
42
23
43
4
44
20
45
18
46
1
47
20
48
19
49
8
71.0145%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
1
diversityRatio
0.43478260869565216
totalSentences
69
uniqueOpeners
30
0.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
2
fancyCount
2
fancyTags
0
"Harlow explained, her voice low and steady (explain)"
1
"He leaned in, whispering, (lean in, whisper)"
85.3907%