NC Bench
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Run: 2026-02-19-01KHTRHRCT6RY9YW3FMP7D18MA
Run Details
Model:
Cohere Command R+ (Aug. 2024)
Test:
Bad Writing Habits
Scenario:
Mystery: examining a crime scene
Duration:
2m 27s
Cost:
$0.018013
Provider:
Cohere
Evaluation summary
Score
Evaluator
Details Link
100.00%
Adverbs in dialogue tags
(details)
95.39%
AI-ism adverb frequency
(details)
100.00%
AI-ism character names
(details)
100.00%
AI-ism location names
(details)
63.13%
AI-ism word frequency
(details)
66.67%
Cliché density
(details)
100.00%
Emotion telling (show vs. tell)
(details)
100.00%
Filter word density
(details)
100.00%
Gibberish response detection
(details)
100.00%
Markdown formatting overuse
(details)
83.33%
Missing dialogue indicators (quotation marks)
(details)
97.68%
Name drop frequency
(details)
100.00%
Narrator intent-glossing
(details)
100.00%
"Not X but Y" pattern overuse
(details)
100.00%
Overuse of "that" (subordinate clause padding)
(details)
93.51%
Paragraph length variance
(details)
100.00%
Passive voice overuse
(details)
100.00%
Past progressive (was/were + -ing) overuse
(details)
10.58%
Em-dash & semicolon overuse
(details)
94.00%
Purple prose (modifier overload)
(details)
100.00%
Repeated phrase echo
(details)
100.00%
Sentence length variance
(details)
84.26%
Sentence opener variety
(details)
100.00%
Adverb-first sentence starts
(details)
100.00%
Pronoun-first sentence starts
(details)
100.00%
Subject-first sentence starts
(details)
79.37%
Subordinate conjunction sentence starts
(details)
96.77%
Technical jargon density
(details)
100.00%
Useless dialogue additions
(details)
100.00%
Dialogue tag variety (said vs. fancy)
(details)
92.1565%
Overall
Model input
System
You are an expert fiction writer. Always keep the following rules in mind: - Write in past tense and use General English spelling, grammar, and colloquialisms/slang. - Write in active voice - Always follow the "show, don't tell" principle. - Avoid adverbs and cliches and overused/commonly used phrases. Aim for fresh and original descriptions. - Convey events and story through dialogue. - Mix short, punchy sentences with long, descriptive ones. Drop fill words to add variety. - Skip "he/she said said" dialogue tags and convey people's actions or face expressions through their speech - Avoid mushy dialog and descriptions, have dialogue always continue the action, never stall or add unnecessary fluff. Vary the descriptions to not repeat yourself. - Put dialogue on its own paragraph to separate scene and action. - Reduce indicators of uncertainty like "trying" or "maybe" When writing text: - NEVER conclude the scene on your own, follow the beat instructions very closely. - NEVER end with foreshadowing. - NEVER write further than what I prompt you with. - AVOID imagining possible endings, NEVER deviate from the instructions. - STOP EARLY if the continuation contains what was required in the instructions. You do not need to fill out the full amount of words possible.
User/Human
Take into account the following glossary of characters/locations/items/lore... when writing your response: <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> Continue the story using the following instructions: <instructions> 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. </instructions>
Model response
Messages
Meta
AI
The Veil Market lay deep
beneath Camden, its entrances hidden from prying eyes.
A chance tip-off had led
Detective Harlow Quinn to this supernatural black market, an underground realm thriving with illicit activity.
Her senses tingled as she
descended the winding stairs, the steel toe of her boots clanging on each step. Seven stories down, the air grew heavy with
intrigue
.
Dimly lit by sconces, the
market bustled with beings from across the realms, engaged in forbidden trade.
A portal shifted nearby, emitting
a
flicker
of light; spirits whispered secrets. 'Quinn!' A
familiar
voice rang out, cutting through the murmur of the crowd.
DS Quentin Stone, her partner
for the day, was tall, broad, and boisterous, with a knack for over-enthusiasm.
He greeted her with a
wide smile, his jowly face shining with eagerness. 'This is it, a demon's den. Strange folk, oddities, artefacts. Loads of 'em.' He paused, clearly struggling to remain composed. 'Bet you ain't seen a sight like this before, eh?'
Harlow nodded, her eyes scanning
the scene. 'What do we have so far?' She surveyed the open space where stalls displayed weapons and tomes of dark magic, each marked with its own unknown language.
Shadows danced around the edges
of her vision as she walked, an indication of magical energy pulsing nearby. 'A murder, oi reckon. There, that lot.' Quentin jerked his thumb towards a commotion near the far wall. 'Some poor sod, must've been in a fight.' Pushing through the throng, Harlow spotted the victim, a lifeless human male, his body battered and bruised.
A puddle of blood had
formed, seeping into the cracks in the stone.
She crouched next to the
corpse, taking in the strange wounds that marred his skin—deep slashes, not made by a regular knife. 'There, you
see
?' Quentin leaned over her shoulder, his breath hot in her ear. 'Mangled, he is.
Feet cut clean off and
not a trace of blood. Bloody goblin, I say. Saw one once in Manchester.'
Harlow squinted at the unnatural
wounds.
The lack of blood didn't
sit right. 'No signs of struggle. No defensive injuries.' She straightened,
slowly
scanning
the market.
The people here went about
their shady business, oblivious to the dead man. 'Where are the emergency services?' Quentin frowned, his brows
furrowing
. 'No calls made yet. But that ain't the funny part. No CCTV, either. Veil Market moves about, y'
see
. Every full moon.
A right headache for us
copper types.'
Harlow knew the challenge of
policing the supernatural. However, that still didn't explain...
Her eyes fell on the
victim's
clenched fists
.
She touched her foot to
his boot and felt a sharp twinge of discomfort. 'Now, don't go prodding the body too much. Mum's the word, for now. No fingerprints, just yet. The punters could go all cross-threaded if they
see
us making a scene.' Quentin's voice had a frantic edge to it, as if he'd had too many coffees. 'Let's just get some photos and be on our way, it ain't our jurisdiction.' 'Ah hell, just look at his face.' Harlow stepped back, her eyes still fixed on the corpse. The man's visage
was contorted
in fear, the tell-tale sign of a sudden, violent death.
His eyes, glassy under the
flickering lights, stared upwards at the vaulted ceiling. 'He died staring at something.' The detective glanced around the market again, and this time, she noticed it—a faint distortion in the air. She pointed. 'Do you
see
that?' 'See what?' Quentin adjusted his tie, squinting. 'Where?' 'There.' Her finger hovered near the man's head, not quite touching. 'That shimmer, like light on heat.' 'Shimmer, huh?' Quentin peered closer, then shook his head. 'Nah, reckon you're seeing things.' He dug into his pocket, extracting a worn notepad and pen. 'Best do a sketch of the crime scene before we go, eh?
Just in case the super
wants it.' 'Forget the sketch.' Harlow stared at the man's lifeless body, her mind working. Years of experience told her this wasn't a simple murder.
She pictured the ripples of
energy that had led her here, an invisible trail of breadcrumbs. 'This man is not our concern; he's a victim, like us.' 'You what?' Quentin spluttered, sounding offended. 'You've gotta be jokin'.' 'He saw something,' Harlow continued, her voice rising with conviction. 'Something only he could
see
, as if it was there just for him.' The detective's
eyes narrowed
, fixed on the air around the corpse. 'There's a rift. What you said, about this place moving. It's a supernatural hotspot. A gateway.' A hush fell over the market, as if the crowd sensed her realisation. In that instant, Harlow saw it, the veil lifted: a dark tear in reality, like a curtain about to part. And within, something stirred, gazing back at her.
Her heart thudded in her
ears. 'Bloody hell,' Quentin whispered, turning pale. 'Could it be...?' 'Yes.' Harlow stood tall, her face transformed by recognition. 'A portal.
They targeted him because he
could
see
into the paranormal.
He witnessed something he shouldn't
have.' The detective bent down, her fingers brushing the victim's cold hand. 'But he wasn't alone. Someone
tried to
warn him.'
She rose and strode towards
the merchant selling weapons, a gnarled creature with green skin and pointed ears.
Her eyes locked onto a
brass compass, unassuming at first glance. The needle
quivered
, pointing towards her. 'The Veil Compass. A powerful relic, crafted by Shades. Can sense the unseen and open doors no man should.' Harlow snatched the compass, her grip tight, as if handling an ancient, deadly weapon. 'Finders Keepers, eh?' The market erupted, pitchforks and screams mixing with the roar of the rift, now wide open.
Her instincts honed over a
thousand cases kicked in; she rolled with the surge of the crowd, using their panic to hide her escape. In the commotion, Quentin appeared at her side, a creature of paper and soot in pursuit.
He snatched the compass with
a cry of rage, but it was too late. The portal yawned, ready to consume them all. Harlow shoved the detective through the portal, then leapt after, the Veil Compass secure in her pocket. On the other side, they emerged in an alley, gasping for breath. The portal, now closed, had left only a faint shimmer behind. 'Did we...?' Quentin's voice trailed off, his face filled with wonder. 'Yes, we did,' Harlow said, her eyes
gleaming
. 'This is a case now, Quentin. A real one. And we're diving in headfirst.'
created_at
"2026-02-19T10:53:50.879Z"
2/19/2026, 10:53:50 AM
model
"cohere/command-r-plus-08-2024"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
79979
moderation_latency
176
generation_time
146279
tokens_prompt
1149
tokens_completion
1643
native_tokens_prompt
1049
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
0.0180125
router
(null)
provider_responses
0
endpoint_id
"cd63714a-d459-4806-bdf2-0dfea4f6614c"
id
"cce88954-ec2a-49d0-9725-781ab807dc21"
is_byok
false
latency
79979
model_permaslug
"cohere/command-r-plus-08-2024"
provider_name
"Cohere"
status
200
api_type
"completions"
id
"gen-1771498430-2VQgZdWFWuN9ziCrmKo5"
upstream_id
"cce88954-ec2a-49d0-9725-781ab807dc21"
total_cost
0.0180125
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Cohere"
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
4
adverbTagCount
0
adverbTags
(empty)
dialogueSentences
0
tagDensity
1
leniency
1
rawRatio
0
effectiveRatio
0
95.39%
AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount
1085
totalAiIsmAdverbs
1
found
0
adverb
"slowly"
count
1
highlights
0
"slowly"
100.00%
AI-ism character names
Target: 0 AI-default names (17 tracked, −20% each)
codexExemptions
(empty)
found
(empty)
100.00%
AI-ism location names
Target: 0 AI-default location names (33 tracked, −20% each)
codexExemptions
(empty)
found
(empty)
63.13%
AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount
1085
totalAiIsms
8
found
0
word
"intrigue"
count
1
1
word
"flicker"
count
1
2
word
"familiar"
count
1
3
word
"scanning"
count
2
4
word
"furrowing"
count
1
5
word
"quivered"
count
1
6
word
"gleaming"
count
1
highlights
0
"intrigue"
1
"flicker"
2
"familiar"
3
"scanning"
4
"furrowing"
5
"quivered"
6
"gleaming"
66.67%
Cliché density
Target: ≤1 cliche(s) per 800-word window
totalCliches
2
maxInWindow
2
found
0
label
"eyes widened/narrowed"
count
1
1
label
"clenched jaw/fists"
count
1
highlights
0
"eyes narrowed"
1
"clenched fists"
100.00%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
1
narrationSentences
68
matches
0
"d in fear"
100.00%
Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount
1
hedgeCount
1
narrationSentences
68
filterMatches
0
"see"
hedgeMatches
0
"tried to"
100.00%
Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences
108
gibberishSentences
0
adjustedGibberishSentences
0
longSentenceCount
0
runOnParagraphCount
0
giantParagraphCount
0
wordSaladCount
0
repetitionLoopCount
0
controlTokenCount
0
maxSentenceWordsSeen
29
ratio
0
matches
(empty)
100.00%
Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans
0
markdownWords
0
totalWords
1079
ratio
0
matches
(empty)
83.33%
Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions
6
unquotedAttributions
1
matches
0
"Bloody goblin, I say."
97.68%
Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions
23
wordCount
669
uniqueNames
12
maxNameDensity
1.05
worstName
"Harlow"
maxWindowNameDensity
2
worstWindowName
"Harlow"
discoveredNames
Veil
3
Market
2
Camden
1
Detective
1
Harlow
7
Quinn
1
Quentin
3
Stone
1
Pushing
1
Years
1
Shades
1
Compass
1
persons
0
"Veil"
1
"Market"
2
"Detective"
3
"Harlow"
4
"Quinn"
5
"Quentin"
6
"Stone"
7
"Compass"
places
(empty)
globalScore
0.977
windowScore
1
100.00%
Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences
48
glossingSentenceCount
0
matches
(empty)
100.00%
"Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches
0
per1kWords
0
wordCount
1079
matches
(empty)
100.00%
Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount
0
totalSentences
108
matches
(empty)
93.51%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
29
mean
37.21
std
17.76
cv
0.477
sampleLengths
0
90
1
44
2
30
3
52
4
26
5
52
6
36
7
44
8
33
9
35
10
59
11
50
12
24
13
8
14
17
15
44
16
50
17
10
18
50
19
47
20
9
21
47
22
35
23
36
24
40
25
55
26
23
27
11
28
22
100.00%
Passive voice overuse
Target: ≤2% passive sentences
passiveCount
1
totalSentences
68
matches
0
"was contorted"
100.00%
Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount
0
totalVerbs
105
matches
(empty)
10.58%
Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount
2
semicolonCount
3
flaggedSentences
5
totalSentences
108
ratio
0.046
matches
0
"A portal shifted nearby, emitting a flicker of light; spirits whispered secrets."
1
"She crouched next to the corpse, taking in the strange wounds that marred his skin—deep slashes, not made by a regular knife."
2
"The detective glanced around the market again, and this time, she noticed it—a faint distortion in the air."
3
"'This man is not our concern; he's a victim, like us.'"
4
"Her instincts honed over a thousand cases kicked in; she rolled with the surge of the crowd, using their panic to hide her escape."
94.00%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
91
adjectiveStacks
1
stackExamples
0
"lay deep beneath Camden,"
adverbCount
1
adverbRatio
0.01098901098901099
lyAdverbCount
1
lyAdverbRatio
0.01098901098901099
100.00%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
108
echoCount
0
echoWords
(empty)
100.00%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
108
mean
9.99
std
6.06
cv
0.606
sampleLengths
0
13
1
20
2
19
3
9
4
17
5
12
6
13
7
18
8
13
9
6
10
4
11
10
12
10
13
7
14
27
15
18
16
4
17
14
18
8
19
17
20
13
21
22
22
14
23
3
24
10
25
4
26
5
27
6
28
7
29
4
30
9
31
13
32
5
33
5
34
4
35
6
36
3
37
5
38
3
39
7
40
8
41
5
42
8
43
14
44
8
45
5
46
4
47
28
48
14
49
17
84.26%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
4
diversityRatio
0.5277777777777778
totalSentences
108
uniqueOpeners
57
100.00%
Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount
2
totalSentences
63
matches
0
"Dimly lit by sconces, the"
1
"Just in case the super"
ratio
0.032
100.00%
Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount
15
totalSentences
63
matches
0
"Her senses tingled as she"
1
"He greeted her with a"
2
"She crouched next to the"
3
"Her eyes fell on the"
4
"She touched her foot to"
5
"His eyes, glassy under the"
6
"She pictured the ripples of"
7
"It's a supernatural hotspot."
8
"Her heart thudded in her"
9
"They targeted him because he"
10
"He witnessed something he shouldn't"
11
"She rose and strode towards"
12
"Her eyes locked onto a"
13
"Her instincts honed over a"
14
"He snatched the compass with"
ratio
0.238
100.00%
Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount
45
totalSentences
63
matches
0
"The Veil Market lay deep"
1
"A chance tip-off had led"
2
"Her senses tingled as she"
3
"A portal shifted nearby, emitting"
4
"DS Quentin Stone, her partner"
5
"He greeted her with a"
6
"Harlow nodded, her eyes scanning"
7
"Shadows danced around the edges"
8
"A puddle of blood had"
9
"She crouched next to the"
10
"Feet cut clean off and"
11
"Harlow squinted at the unnatural"
12
"The lack of blood didn't"
13
"The people here went about"
14
"Quentin frowned, his brows furrowing."
15
"Veil Market moves about, y'see."
16
"Every full moon."
17
"A right headache for us"
18
"Harlow knew the challenge of"
19
"Her eyes fell on the"
ratio
0.714
79.37%
Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount
1
totalSentences
63
matches
0
"However, that still didn't explain..."
ratio
0.016
96.77%
Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences
31
technicalSentenceCount
2
matches
0
"She crouched next to the corpse, taking in the strange wounds that marred his skin—deep slashes, not made by a regular knife."
1
"She pictured the ripples of energy that had led her here, an invisible trail of breadcrumbs."
100.00%
Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags
4
uselessAdditionCount
0
matches
(empty)
100.00%
Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags
0
92.1565%