NC Bench
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Run: 2026-02-17-01KHMMG89YNEVATF066YSQAZJT
Run Details
Model:
Cohere Command R+ (Aug. 2024)
Test:
Bad Writing Habits
Scenario:
Mystery: examining a crime scene
Duration:
43.1s
Cost:
$0.020133
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 whispered its secrets in the
echo
es of an abandoned Tube station beneath Camden. Detective Harlow Quinn stepped into this
clandestine
gathering,
navigating
through the warren of stalls and makeshift tents. This was not her typical crime scene, but then again, nothing in the underground markets could be considered typical. She had
been alerted
to a disturbance in this ever-shifting labyrinth, one that might provide a rare glimpse into the
clandestine
world of the supernatural.
The air was thick with
the scent of incense and the murmurs of various creatures. Harlow's brown eyes, sharp with a detective's intuition, scanned the area. Stacks of ancient tomes, jars filled with ominous powders, and artifacts from every corner of the globe were on display. A serpentine man whispered to a potential buyer beside a caged hellhound, its growls reverberating off the concrete walls. "Inspector!" A voice called out, its urgency cutting through the market's haze. Detective Quinn spotted her colleague, Eva Kowalski, weaving through the crowd. Eva, with her fiery curls bouncing against her round glasses, approached, her satchel bumping against her side with each step. Her freckled cheeks
were flushed
, a telltale sign of her excitement. Harlow had come to rely on Eva's expertise in the occult, a skill set she had developed through her work at the British Museum's restricted archives. "What have we got, Evie?" Harlow asked, her voice low, her demeanor guarded as she observed the chaos around her. The worn leather
watch
on her wrist ticked steadily, a silent reminder of the time slipping by. "It's cryptic, as usual." Eva pulled out a notebook, her hands flipping through the pages with haste. "A potential murder, but the body vanished. All that's left is a residual anomaly. It's like a ghostly
echo
, one that's attracting various entities." Harlow's eyebrows
furrowed
, her sharp jawline tensing. "An anomaly? Why wasn't I notified sooner?" She was keenly aware of the politics surrounding the supernatural, and the Metropolitan Police was often kept in the dark about these matters. Eva bit her lip, a nervous habit of hers. "That's just it. The usual channels didn't pick it up. It seems the event was shielded, and the person responsible used some sophisticated masking spells." Harlow's gaze swept across the market, her eyes landing on a group of humanoid creatures
watch
ing her with eyes as black as coal. She sensed the
weight
of their stares on her, a
stark
reminder that she had no authority here. "This market," she said, her voice steady, "it moves with the full moon." It was not a question. "Yes. It's been in this abandoned station for a few nights. A veil compass would be handy, but even then, it's not a guarantee you'd find the place again." Quinn
couldn't help but notice
the small brass compass on a chain around Eva's neck, its face
etched
with protective sigils. She had learned early on that Eva had a knack for acquiring useful objects. "And you knew this," Harlow stated, a hint of accusation creeping into her voice. "I stumbled upon it by chance, actually," Eva said, a note of defensiveness creeping into her tone. "I was following a lead on a separate case." She paused, tucking her hair behind her ear. "The market is a labyrinth, Harlow. I managed to trace the disturbance to this location, but I can't guarantee it will stay here for long." Harlow considered this, her eyes narrowing as she assessed the scene. "Show me." Eva led her through a maze of stalls, past dubious merchants and creatures that belonged in nightmares. The station platform was now filled with makeshift tents and cluttered displays, a
stark
contrast to its original purpose. They stopped near a stone archway, its surface
etched
with
intricate
runes. Eva produced a bone token, an entry pass into the market, and placed it on a pedestal. The archway glowed, its runes shimmering, and a hidden door slid open. Beyond it was a chamber that
seemed to
defy the confines of the underground station. The walls
were lined
with candles, casting a flickering light over the small space. Harlow's eyes darted over the chamber, taking in the details. The stone floor
was etched
with an
intricate
pattern that
seemed to
pulsate
gently
. "This is a containment circle," Eva explained. "Whoever set it up knew what they were doing. It's designed to trap and amplify spiritual energy." Harlow knelt, examining the circle closely. "And what, or who, was contained here?" "That's the mystery. The circle was designed to hold something powerful, but there are no signs of a struggle. Whoever set this up was an expert, which means our suspect list is already narrow." Eva's words reminded Harlow of her own expertise, honed from nearly two decades on the force. Her bearing, with its military precision, betrayed no hint of her unease as she stood and brushed off her trousers. "Did you find anything else?" "No physical evidence," Eva said, her voice low as if not to disturb the circle's mysterious power. "But I managed to capture some residual images using a
spectral
camera. I've enhanced them back at the office, and they're telling. Take a look." Harlow
watch
ed as Eva produced a small device from her satchel and projected the captured images onto the stone wall. The images were grainy, but as they
flickered
across the surface, they revealed a story. The first image showed a cloaked figure standing in the center of the circle, their hands outstr
etched
, conjuring a complex array of runes and symbols. Harlow recognized the figure as a practitioner of dark arts, one who could command powerful forces. "The casting of the containment circle," Eva said, her voice narrating the scene. "This was expertly done, indicating a highly skilled sorcerer or witch." The next image displayed a
spectral
figure caught within the circle's restraints. It was a woman, her features illuminated in the strange light, her expression a mix of rage and fear. Her ghostly form struggled against the invisible barriers, to no avail. "Our victim. She was still alive when she was contained," Eva explained. "Her life force is being drained,
slowly
. The circle is designed to trap and extract her magical essence." Harlow's detective's mind
began to
piece together a theory. "So, our suspect lured this woman here, a fellow practitioner, most likely, and used this circle to capture and kill her, siphoning her power. But why go to such lengths to hide the body?" "And what became of the body?" Eva added, her eyes
glinting
with a mix of curiosity and
trepidation
. Quinn's words
echo
ed through the chamber, the candles flickering as if in response to her determination. "We find out who is behind this, and we find out why. Someone here must have information. Someone saw something." As if in response to Harlow's words, there was a sudden commotion outside the chamber. Shouts and the scuffle of creatures could be heard, followed by a piercing scream. The candles
flickered
and nearly went out, casting the chamber into momentary darkness. Eva rushed toward the opening, but Quinn's military-honed instincts kicked in, and she grabbed her arm. "Wait, Evie. Something's not right." The two women stood still, listening to the chaos outside. It was then that Harlow noticed the circle's flickering glow had dimmed, its
spectral
woman disappearing into the darkness. The walls no longer pulsated, the runes fading. The Veil Market, with all its enchantments and secrets, was
slowly
creeping in, reclaiming this sacred space. "The market is moving," Eva whispered, her voice carrying both awe and fear. "It's a rush to secure goods and information before it disappears for another month." "And our suspect might be slipping away with everyone else." Harlow's voice carried a hint of steel, her determination
unwavering
. The detective glanced back at the compass on Eva's neck, its needle now pointing in a new direction. Perhaps the residue of whatever had held this woman was strong enough to draw others, or the needle
was aligning
with the shifting course of the Veil Market's spellwork. Harlow followed the compass's lead, her mind already plotting their next steps in solving this most unusual crime.
created_at
"2026-02-17T01:48:24.965512+00:00"
2/17/2026, 1:48:24 AM
model
"cohere/command-r-plus-08-2024"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
146
moderation_latency
291
generation_time
42667
tokens_prompt
923
tokens_completion
2111
native_tokens_prompt
857
native_tokens_completion
1799
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
0.0201325
router
(null)
provider_responses
0
id
"f317432c-7e9e-4f16-a888-ff127b757ded"
status
200
is_byok
false
latency
146
endpoint_id
"cd63714a-d459-4806-bdf2-0dfea4f6614c"
provider_name
"Cohere"
model_permaslug
"cohere/command-r-plus-08-2024"
api_type
"completions"
id
"gen-1771292860-igpddxOH8IUkxQAsny9y"
upstream_id
"f317432c-7e9e-4f16-a888-ff127b757ded"
total_cost
0.0201325
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Cohere"
Evaluation details
Result
Evaluator
Details
Meta Data
100.0000%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
10
adverbTagCount
0
adverbTags
(empty)
78.0059%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1364
totalAiIsmAdverbs
3
found
0
adverb
"gently"
count
1
1
adverb
"slowly"
count
2
highlights
0
"gently"
1
"slowly"
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
1364
totalAiIsms
23
found
0
word
"flickered"
count
2
1
word
"glinting"
count
1
2
word
"spectral"
count
3
3
word
"clandestine"
count
2
4
word
"unwavering"
count
1
5
word
"intricate"
count
2
6
word
"stark"
count
2
7
word
"trepidation"
count
1
8
word
"furrowed"
count
1
9
word
"weight"
count
1
10
word
"echo"
count
1
11
word
"echoed"
count
1
12
word
"echoes"
count
1
13
word
"etched"
count
3
14
word
"navigating"
count
1
highlights
0
"flickered"
1
"glinting"
2
"spectral"
3
"clandestine"
4
"unwavering"
5
"intricate"
6
"stark"
7
"trepidation"
8
"furrowed"
9
"weight"
10
"echo"
11
"echoed"
12
"echoes"
13
"etched"
14
"navigating"
66.6667%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
2
maxInWindow
2
found
0
label
"air was thick with"
count
1
1
label
"couldn't help but"
count
1
highlights
0
"The air was thick with"
1
"couldn't help but notice"
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
67
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
1
hedgeCount
3
narrationSentences
67
filterMatches
0
"watch"
hedgeMatches
0
"seemed to"
1
"began to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
0
totalSentences
83
matches
(empty)
75.4711%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
35
mean
38.91
std
16.12
cv
0.414
sampleLengths
0
77
1
65
2
12
3
68
4
37
5
41
6
37
7
34
8
59
9
29
10
49
11
59
12
13
13
36
14
41
15
53
16
24
17
13
18
34
19
41
20
42
21
35
22
41
23
24
24
42
25
30
26
43
27
18
28
36
29
42
30
21
31
54
32
27
33
20
34
65
93.5323%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
4
totalSentences
67
matches
0
"been alerted"
1
"were flushed"
2
"were lined"
3
"was etched"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
1
totalVerbs
158
matches
0
"was aligning"
100.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
980
adjectiveStacks
0
stackExamples
(empty)
adverbCount
20
adverbRatio
0.02040816326530612
lyAdverbCount
10
lyAdverbRatio
0.01020408163265306
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
83
echoCount
0
echoWords
(empty)
93.7500%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
83
mean
16.41
std
6.31
cv
0.384
sampleLengths
0
16
1
17
2
19
3
25
4
15
5
11
6
20
7
19
8
12
9
11
10
20
11
11
12
26
13
20
14
17
15
17
16
24
17
7
18
30
19
9
20
25
21
23
22
18
23
18
24
29
25
21
26
14
27
14
28
17
29
17
30
25
31
11
32
2
33
17
34
19
35
12
36
17
37
12
38
15
39
14
40
10
41
14
42
7
43
17
44
6
45
7
46
34
47
16
48
20
49
5
59.4378%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
4
diversityRatio
0.3855421686746988
totalSentences
83
uniqueOpeners
32
0.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
10
fancyCount
8
fancyTags
0
"she said, her voice steady, It was not a question (say, does be not)"
1
"Harlow stated, a hint of accusation creeping into her voice (state, creep)"
2
"Eva said, a note of defensiveness creeping into her tone (say, creep)"
3
"Eva explained (explain)"
4
"Eva said, her voice low as if not to disturb the circle's mysterious power (say, disturb)"
5
"Eva said, her voice narrating the scene (say, narrate)"
6
"Eva explained (explain)"
7
"Eva whispered, her voice carrying both awe and fear (whisper, carry fear)"
80.4038%