NC Bench
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Run: 2026-02-17-01KHMQJADGC50JS05AHTEQ5251
Run Details
Model:
Gemini 2.5 Flash
Test:
Bad Writing Habits
Scenario:
Thriller: chase through city streets
Duration:
9.3s
Cost:
$0.004146
Provider:
Google AI Studio
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 lashed down, a cold front moving in, unforgiving and sudden. Detective Harlow Quinn, her closely cropped salt-and-pepper hair plastered to her skull, didn’t spare it a thought. She
was focused
on the figure ahead, a fleeting shadow darting between the harsh sodium glow of streetlamps and the
oppressive
gloom of Soho’s back alleys. Tomás Herrera, she was sure of it. Or at least, the closest thing she had to a lead. He was fast, quicker than she’d given the former paramedic credit for. Harlow, despite her 5’9” frame and military precision in movement, felt the burn in her lungs, the stitch in her side. Eighteen years on the force, and she still hated a good foot chase. The worn leather
watch
on her left wrist showed a quarter past two. The city was mostly asleep, a scattering of late-night clubbers and the ever-present hum of traffic her only witnesses. Herrera, smaller at 5’10” with dark, curly hair,
seemed to
melt into the urban landscape. His olive skin, normally a friendly contrast to his warm brown eyes, was now just a darker patch against the grimy brickwork. She remembered the file: *Lost license for unauthorized treatments to supernatural patients.* The words had been sterile, bureaucratic, but in the depths of her gut, Harlow felt the chill of something else entirely. Three years ago, DS Morris. Unexplained circumstances. Supernatural origins she didn’t understand. She wasn't about to lose another one to the things that lurked in the dark. He cut down a narrow lane, slick with rain and refuse, toward the distinct green neon sign of The Raven’s Nest. *Silas’ bar,* the intel had called it. That made sense. This clique, as her notes called them,
seemed to
gravitate towards places with a certain… anonymity. She saw him hesitate, a momentary glance over his shoulder, the Saint Christopher medallion around his neck
glinting
under a brief burst of light. He knew she was still there. That was good. That meant she was close. He didn’t go into the bar. Instead, with a surprising agility, he slipped through a gap in a chain-link fence, disappearing into what looked like a derelict construction site. Harlow grit her teeth, her sharp jaw tight. The fence rattled as she pulled herself through, tearing a snag in her jacket. The ground here was uneven, a wasteland of broken concrete and rusting rebar. The rain intensified, drumming a furious rhythm on discarded sheets of corrugated iron. She heard him then, a heavy thud, followed by a scraping sound. He
was descending
. Into the ground. Harlow reached the edge of a gaping hole, barely visible in the downpour. A ladder, old and rickety, disappeared into the black. Below, a faint, almost musical hum
resonated
up. Not an electrical hum, but something deeper, more resonant. The air smelled of damp earth and something else… something sweet and metallic, like old blood and strange spices. Harlow gripped the cold metal rungs, her breath pluming in the frigid air. This was it. The line she'd been skirting for months. This wasn’t just a chase anymore. This was a descent. Into what, she didn't yet know, but the hairs on the back of her neck stood on end. She thought of Morris again, the blank look in his eyes that morning, the way he’d just… stopped. Her left forearm
throbbed
, an old scar from a knife attack she’d sustained years ago, a physical reminder of the
tangible
threats she normally faced. But this… this felt different. She started down the ladder, each rung creaking under her
weight
. The darkness swallowed her, until the only light was the faint glow filtering from the hole above. The hum grew louder, more distinct, like a thousand hushed voices just beyond the edge of hearing. She lowered herself
slowly
, methodically, her hand automatically reaching for the butt of her service pistol, though she knew, deep down, it might be useless here. Her feet landed on damp earth. The air was warmer down here, though still carrying that strange, cloying scent. The hum was now a definite
cacophony
, a constant murmur of sound. As her eyes adjusted, a dim, multicolored light
flickered
in the distance. Herrera was a small dot, moving away from her, deeper into the cavernous space. He'd led her into an abandoned Tube station. Rusting tracks stretched into the blackness, and the arched ceiling dripped with condensation. But this was no ordinary defunct station. Stalls, cobbled together from reclaimed materials, lined the platforms. They
were lit
by flickering lanterns, by strange, pulsing fungal growths, by globes of what looked like captured starlight. People moved between them, a strange, eclectic mix she’d never seen before. Some looked human, but others… others had a wrongness to them, a subtle shift in proportion, a too-bright gleam in their eyes, impossible shadows that clung to their forms. The Veil Market. The whispers of it had always
been dismissed
as urban legends, the ramblings of the
truly
deranged. *Moves locations every full moon. Entry requirement: bone token.* She’d never considered it real. Now, here it was, a chaotic, vibrant organism pulsing beneath the concrete heart of London. Herrera
was threading
his way through the crowd, his olive skin and short, curly hair a
stark
contrast to the bizarre inhabitants of the market. He moved with purpose, dodging grotesque figures haggling over what looked like vials of
luminous
liquid and shriveled, mummified limbs. Harlow felt a jolt of pure, unadulterated fear, cold and sharp. This was not her world. This was the world that had taken Morris from her. She pressed herself against a rusted pillar, trying to stay out of sight, trying to process the sheer impossibility of it all. A stall nearby offered what looked like human teeth strung on a necklace, another showcased intricately carved bone tokens, identical to the ones mentioned in the codex. The market was a sensory overload—the cloying scent now mingled with something akin to ozone and burnt sugar, the hum of voices layered with strange, animalistic calls and the melodic clinking of unseen instruments. Herrera was almost at the far end of the platform, nearing a dark tunnel. If he went in there, she knew he'd be gone for good. But to follow him? To step out from the relative obscurity of the pillar and plunge herself into the thick of this… this *abomination*? Her hand was still on her pistol, the cold steel a familiar comfort against the alien strangeness of the market. She was a detective, trained to uphold the law, to bring order to chaos. But this chaos felt ancient, primal, beyond any law she knew. Morris’s face flashed in her mind, the confusion in his eyes before they went blank. She couldn't let it happen again. She wouldn’t. She pushed off the pillar, her breath ragged. The market smelled like danger, like the unknown, but also like answers. And Harlow Quinn was a detective who always hunted for answers, no matter how deeply buried, no matter how dangerous the ground. She took a step, then another, moving out of the shadows and into the flickering,
otherworldly
light of the Veil Market.
created_at
"2026-02-17T02:41:24.203705+00:00"
2/17/2026, 2:41:24 AM
model
"google/gemini-2.5-flash"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
409
moderation_latency
(null)
generation_time
9284
tokens_prompt
914
tokens_completion
1814
native_tokens_prompt
852
native_tokens_completion
1556
native_tokens_completion_images
0
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
0.0041456
router
(null)
provider_responses
0
status
200
is_byok
false
latency
409
endpoint_id
"16c01e26-9b91-4d22-b487-ed35634b017d"
provider_name
"Google AI Studio"
model_permaslug
"google/gemini-2.5-flash"
api_type
"completions"
id
"gen-1771296074-RCHmA6RgUwQqk4nr2c46"
upstream_id
(null)
total_cost
0.0041456
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
100.0000%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
0
adverbTagCount
0
adverbTags
(empty)
83.3472%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1201
totalAiIsmAdverbs
2
found
0
adverb
"slowly"
count
1
1
adverb
"truly"
count
1
highlights
0
"slowly"
1
"truly"
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)
8.4097%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1201
totalAiIsms
11
found
0
word
"tangible"
count
1
1
word
"luminous"
count
1
2
word
"cacophony"
count
1
3
word
"throbbed"
count
1
4
word
"resonated"
count
1
5
word
"flickered"
count
1
6
word
"glinting"
count
1
7
word
"oppressive"
count
1
8
word
"otherworldly"
count
1
9
word
"stark"
count
1
10
word
"weight"
count
1
highlights
0
"tangible"
1
"luminous"
2
"cacophony"
3
"throbbed"
4
"resonated"
5
"flickered"
6
"glinting"
7
"oppressive"
8
"otherworldly"
9
"stark"
10
"weight"
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
93
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
1
hedgeCount
2
narrationSentences
93
filterMatches
0
"watch"
hedgeMatches
0
"seemed to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
0
totalSentences
93
matches
(empty)
14.3631%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
16
mean
74.63
std
14.95
cv
0.2
sampleLengths
0
73
1
78
2
97
3
85
4
77
5
76
6
99
7
71
8
57
9
97
10
49
11
71
12
83
13
50
14
68
15
63
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
3
totalSentences
93
matches
0
"was focused"
1
"were lit"
2
"been dismissed"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
2
totalVerbs
183
matches
0
"was descending"
1
"was threading"
100.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
1201
adjectiveStacks
0
stackExamples
(empty)
adverbCount
46
adverbRatio
0.038301415487094086
lyAdverbCount
18
lyAdverbRatio
0.01498751040799334
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
93
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
93
mean
12.84
std
10.32
cv
0.804
sampleLengths
0
12
1
17
2
26
3
7
4
11
5
12
6
81
7
22
8
33
9
5
10
2
11
5
12
15
13
21
14
7
15
3
16
15
17
1
18
24
19
6
20
3
21
5
22
6
23
23
24
8
25
14
26
13
27
13
28
12
29
3
30
3
31
13
32
9
33
8
34
9
35
9
36
10
37
13
38
3
39
7
40
6
41
4
42
18
43
17
44
1
45
25
46
2
47
3
48
11
49
17
59.1398%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
10
diversityRatio
0.41935483870967744
totalSentences
93
uniqueOpeners
39
100.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
0
fancyCount
0
fancyTags
(empty)
86.1918%