NC Bench
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Run: 2026-02-17-01KHMQMPVTK4YC31XFATHWX7ZJ
Run Details
Model:
MoonshotAI: Kimi K2.5
Test:
Bad Writing Habits
Scenario:
Thriller: chase through city streets
Duration:
4m 50s
Cost:
$0.025108
Provider:
SiliconFlow
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
Rain drilled into the pavement like gunfire. Detective Harlow Quinn kept her chin tucked, salt-and-pepper hair plastered flat against her skull, water streaming down the sharp line of her jaw. Her boots—standard Metropolitan Police issue,
polished that morning
with military precision—struck the wet asphalt in a rhythm that matched the toll of her heart. She didn't feel the cold. She felt the gap closing. Fifteen yards. The suspect
was flagging
. He vaulted a chain-link fence dividing the construction site from the pavement, and for a split second, the sodium streetlight caught the flash of silver at his throat. Saint Christopher. Then his sleeve rode up as he swung his legs over, revealing the pale ribbon of scar tissue along his left forearm. Tomás Herrera. The recognition clicked into place like a round chambering—twenty-nine years old, five-foot-ten, former NHS paramedic turned underground medic. Quinn's hand instinctively checked the Glock 17 holstered at her hip, though she didn't draw. She needed him talking, not bleeding. She hit the fence three seconds behind him, gripping the wet links, hauling her five-nine frame over with a grunt that betrayed her forty-one years. The leather band of her
watch
—worn, cracked, sitting heavy on her left wrist—snagged on a ridge of metal, jerking her arm. She yanked it free and kept moving. Herrera
was darting
left, toward the Underground entrance at Tottenham Court Road. As they passed an alley mouth, Quinn glimpsed the distinctive green neon of The Raven’s Nest bleeding emerald across the wet cobblestones—a landmark she’d surveilled for weeks, knowing its hidden back room held secrets behind a false bookshelf. But Herrera didn’t veer toward the clique’s bar. He plunged down the stairs into the Tube station, fare-dodging past the barriers with the ease of a man who knew the cameras were blind on the north side. Quinn followed, badge flashing at the startled night staff, taking the stairs two at a time. Her brown eyes burned, wiping rain and sweat from her lashes. The operational platform was nearly empty, the last trains rattling through with a Doppler whine. Herrera didn’t stop at the edge. He leaped down onto the tracks, landing in a crouch on the gravel bed. "Shit." She radioed for backup, knowing it wouldn't come in time, and dropped onto the electrified rail bed. Her boots found the purchase between sleepers, the third rail humming lethal inches to her left. They were in the dark now, the tunnel swallowing the street noise whole, replacing it with the subterranean roar of ventilation fans and something older—the breath of the city’s buried bones. Three years. It had been three years since DS Morris had died in a place like this, between stations, in the dark where the maps showed only blank paper. Morris had stopped to check a noise in a service corridor. Morris had never come out. The case file cited "unexplained atmospheric anomalies," a euphemism that still woke Quinn at 3:00 a.m. Now, chasing a man who treated supernatural gangsters with unauthorized medicines through tunnels that smelled of ozone and grave mold, she tasted the same copper fear she'd swallowed the night Morris’s radio went to static. Herrera ran along the track, sure-footed, heading north toward Camden. His muscular frame moved with the elasticity of youth, dodging between the iron stanchions. Quinn pursued, her bearing rigid, economical, her breath controlled but burning. They passed through a chained gate—padlock sheared clean—that separated the live network from the disused spurs. The temperature dropped ten degrees. The walls here were black with decades of brake dust and nitrogen oxide, tiled in patterns that predated the war. They emerged onto a platform that shouldn't exist on any current map. The abandoned station beneath Camden opened up like a surgical wound. Tiled walls, black with filth, str
etched
into darkness. Old posters—Lux soap, Brylcreem—peeled like shedding skin. The tracks ended in a buffer of twisted rust. And there, at the far end where the tunnel resumed its descent, stood Herrera. He wasn't alone. A gate had
been erected
across the archway—not steel, but bone. Femurs and ribs lashed together with copper wire, crowned with a skull that might have been human once, now polished to ivory and inscribed with spiraling characters that hurt to focus on. It blocked the tunnel entrance, and before it hovered a shimmer, a distortion in the air like heat off tarmac, though the underground was frigid enough to fog Quinn’s breath. Herrera stood at the threshold, his chest heaving, steam rising from his short, curly dark hair. He turned. Across thirty feet of abandoned platform, his warm brown eyes met hers. No fear there. Only resignation, and something worse—pity. "You're not ready for this," he called. His accent—Seville, by way of Bethnal Green—
echoed
flat against the tiles. Quinn advanced, weapon drawn, arms locked in an isosceles stance, military training overriding the instinct to freeze. "Metropolitan Police. Step away from the gate. Hands where I can see them." "You followed the wrong thread, Detective." Herrera's hand moved, not to a weapon, but to his throat. He lifted the medallion, then reached into his jacket. Quinn tensed, finger sliding to the trigger guard. But he withdrew only a token—white, carved from what looked like compacted ash or bone,
etched
with symbols that squirmed in the low light like tadpoles in a jar. "This isn't your war. Not yet." He pressed the token against the shimmering air. The distortion rippled, parted like a curtain drawn back by invisible hands. Beyond it, Quinn glimpsed impossible geometry—stalls lit by witchlight, figures in hooded robes bartering over jars that glowed with nuclear blue, alchemical smoke threading through the vaulted ceiling of a market that had no right to exist beneath Camden Town. The Veil Market. It moved every full moon, she remembered from the half-redacted files she'd stolen from the occult squad's desk. Currently located here. Requires a bone token for entry. Sells enchanted goods, banned alchemical substances, and the kind of information that got detectives killed. Herrera stepped through. The shimmer
began to
seal behind him, the bone gate rattling in its housing. Quinn ran. She hit the barrier hard, shoulder checking the femur bars. They didn't budge—solidity where there should be yielding air. She holstered her weapon and grabbed the skull—cold, too cold, burning her palms like dry ice—and hauled herself up, boots finding purchase in the gaps between ribs. The shimmer
was closing
, a wound knitting shut, the scent of myrrh and iodine escaping in wisps. Through the narrowing gap, she saw Herrera walking backward into the throng, his scarred arm raised in a gesture that wasn't quite surrender. The full moon wasn't for three days, but the market was here, bleeding into the abandoned station, hungry for trade. Her
watch
dug into her wristbone. The leather was soaked through, the ancient mechanism ticking against her pulse, marking the seconds of her hesitation. Morris had stopped at the threshold. Morris had weighed the risks, the regulations, the rational world with its reports and chain of evidence. Morris was dust, or worse, buried in a file marked unsolved. Quinn pressed her palm against the closing seam of reality. The bone token was a requirement, but desperation was a currency of its own. She pushed. The Veil recognized her scar tissue—the loss, the obsession, the three years of unanswered questions. It tasted her grief and found it acceptable tender. The shimmer enveloped her, silencing the rain, the city, the rules of the Metropolitan Police. She stepped through, leaving her certainties dripping onto the platform behind her. The gate sealed with a sound like a sigh. Ahead, the market breathed—alive, ancient, and waiting. And Harlow Quinn, forty-one years old, sharp-jawed and salt-haired and aching with the memory of her dead partner, followed the medic into the dark.
created_at
"2026-02-17T02:47:22.433305+00:00"
2/17/2026, 2:47:22 AM
model
"moonshotai/kimi-k2.5-0127"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1611
moderation_latency
(null)
generation_time
278762
tokens_prompt
914
tokens_completion
9708
native_tokens_prompt
825
native_tokens_completion
8306
native_tokens_completion_images
(null)
native_tokens_reasoning
6578
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
0.02510775
router
(null)
provider_responses
0
status
(null)
is_byok
false
latency
10914
endpoint_id
"6b68e10a-44e0-4815-9b96-52f34335f83d"
provider_name
"BaseTen"
model_permaslug
"moonshotai/kimi-k2.5-0127"
1
id
"019c697a87e8cc3e1178b87ca018225d"
status
200
is_byok
false
latency
1611
endpoint_id
"34bb2131-6727-40e5-9dec-8793b254ba5c"
provider_name
"SiliconFlow"
model_permaslug
"moonshotai/kimi-k2.5-0127"
api_type
"completions"
id
"gen-1771296152-QkMFyfXWzj4M2wuzPYss"
upstream_id
"019c697a87e8cc3e1178b87ca018225d"
total_cost
0.02510775
cache_discount
(null)
upstream_inference_cost
0
provider_name
"SiliconFlow"
Evaluation details
Result
Evaluator
Details
Meta Data
0.0000%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
2
adverbTagCount
1
adverbTags
0
"The case file cited a euphemism that still woke Quinn at 3:00 a.m. [still]"
100.0000%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1335
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)
85.0187%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1335
totalAiIsms
2
found
0
word
"echoed"
count
1
1
word
"etched"
count
1
highlights
0
"echoed"
1
"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
95
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
2
hedgeCount
1
narrationSentences
95
filterMatches
0
"watch"
hedgeMatches
0
"began to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
1
totalSentences
97
matches
0
"polished that morning"
100.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
27
mean
48.11
std
29.21
cv
0.607
sampleLengths
0
64
1
6
2
93
3
53
4
87
5
62
6
65
7
96
8
76
9
12
10
49
11
3
12
73
13
38
14
18
15
30
16
69
17
105
18
17
19
2
20
63
21
43
22
58
23
26
24
24
25
36
26
31
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
1
totalSentences
95
matches
0
"been erected"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
3
totalVerbs
224
matches
0
"was flagging"
1
"was darting"
2
"was closing"
88.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
1301
adjectiveStacks
2
stackExamples
0
"paramedic turned underground medic."
1
"short, curly dark hair."
adverbCount
23
adverbRatio
0.017678708685626442
lyAdverbCount
7
lyAdverbRatio
0.005380476556495004
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
97
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
97
mean
13.39
std
8.76
cv
0.654
sampleLengths
0
7
1
23
2
24
3
5
4
5
5
2
6
4
7
28
8
2
9
22
10
2
11
18
12
15
13
6
14
25
15
21
16
7
17
12
18
38
19
8
20
29
21
16
22
11
23
15
24
6
25
14
26
18
27
16
28
31
29
2
30
27
31
11
32
5
33
16
34
35
35
10
36
14
37
11
38
16
39
5
40
20
41
12
42
11
43
8
44
7
45
9
46
14
47
3
48
11
49
32
59.1065%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
6
diversityRatio
0.3917525773195876
totalSentences
97
uniqueOpeners
38
50.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
2
fancyCount
1
fancyTags
0
"The case file cited a euphemism that still woke Quinn at 3:00 a.m. (cite still wake)"
87.1838%