NC Bench
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Run: 2026-02-17-01KHMR640M125ZCQ06MES66AGA
Run Details
Model:
Gemini 2.5 Flash
Test:
Bad Writing Habits
Scenario:
Thriller: chase through city streets
Duration:
8.8s
Cost:
$0.004068
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 came down in sheets, plastering Harlow’s salt-and-pepper hair to her scalp and running in cold rivulets down her sharp jaw. The worn leather
watch
on her left wrist was damp, the numerals blurred. Her military precision usually kept her composed, but the infernal weather, combined with the ghost of a pursuit, frayed her nerves. Three years. Three years since Morris. She shook the memory away. Tonight was about Tomás Herrera, not specters. He'd been too easy to spot leaving the Raven's Nest, the green neon sign a
beacon
in the Soho gloom. Harlow had parked a block away,
watch
ing the entrance. When his slight frame, olive skin pale even in the low light, emerged, pulling his collar up against the downpour, she’d felt a prickle of triumph. Herrera, the former paramedic, the quiet man who provided off-the-books medical care to the clique. Harlow had been
watch
ing the Raven's Nest for weeks, and finally, a lead. He moved with an agile grace that defied his innocuous appearance. Harlow, all five-foot-nine of her, kept pace, blending into the shadows of doorways and the steady stream of late-night pedestrians. The city's pulse
throbbed
around them, a
cacophony
of distant sirens, the rhythmic splash of tires through puddles, and the low hum of conversation from pubs spilling onto the pavement. Her boots slapped against the wet asphalt. Herrera
seemed to
know every alley, every shortcut, twisting through the labyrinthine streets of Camden. He wasn't running yet, not
truly
, but his pace
was quickening
, a nervous energy propelling him forward. Harlow felt her own heart hammering, a familiar thrill mixed with a cold dread. She gripped the cold metal of her service weapon through her coat pocket. They passed a brightly lit shop window displaying antique dolls with vacant glass eyes. For a fleeting second, Herrera’s reflection caught hers. His head snapped around. He saw her. That was the signal. Herrera broke into a full sprint, his dark, curly hair bouncing. The Saint Christopher medallion around his neck, usually hidden, glinted briefly under a streetlamp as he turned a sharp corner. “Herrera!” Harlow’s voice was a rough bark, swallowed by the rain. He didn't acknowledge her. He merely ran faster, an almost desperate energy propelling him. Harlow cursed, digging deep, her strides long and powerful. She wasn't an Olympic runner, but eighteen years on the force had given her stamina and an
unwavering
resolve. The chase intensified. They careened through a forgotten market square, scattering pigeons from beneath a dripping awning. Herrera vaulted over a series of overflowing bins, his movements fluid. Harlow, less nimble, went around, losing a few precious seconds. By the time she rounded the corner, he was a dark blur disappearing down a narrow, graffiti-scarred alley. The alley reeked of stale beer and something metallic, like old blood. Harlow drew her weapon, the rain slicking her grip, and entered
cautiously
. The alley dead-ended in what looked like a derelict service entrance to an abandoned building. The metal door hung ajar, revealing a black void. Harlow pushed it open further. A faint light, a sickly yellow, emanated from below. Stairs, steep and grime-coated, descended into darkness. The air grew heavy, damp, and smelled of earth and something else… strange, like burnt minerals. Hesitation. A fleeting moment of doubt. This wasn’t protocol. This
was straying
from the map, from the realm of the rational. She remembered Morris, and the unanswered questions, the whispers of things unseen. She’d promised herself she wouldn’t repeat the same mistakes, wouldn’t chase shadows into the dark unknown. But Herrera wasn't a shadow. He was a man, a human
being involved
with whatever unnerving activity brewed in the Raven's Nest, and he
was taking
her to the heart of it. This was her chance. This was the lead. The memory of the scar running along his left forearm, a deep, jagged line from a knife attack she’d read about in his file, flashed in her mind. He was a survivor. What was he surviving, and what was he tangled in? She descended, one hand on the cold, damp railing, the other gripping her weapon. The stairs twisted and turned, and the sounds of the city faded, replaced by an
echoing
drip and a faint, distant murmur. The yellow light grew stronger, revealing crumbling concrete walls and exposed pipes. At the bottom, a long, narrow tunnel stretched ahead. The air here was warmer, thicker. The distant murmur resolved into a
cacophony
of voices, a babel of languages, and the clinking of metal. It sounded like a market. An underground market. A deep thrum vibrated through the floor beneath her boots. She squinted, adjusting to the
newfound
brightness, though it was still dim, a patchwork of hanging lanterns and flickering torches illuminating sporadic stalls. The tunnel opened into a vast cavern. Her breath caught. This wasn’t just a market; it was an entire world beneath the city. The Veil Market. She'd heard whispers, of course, the kind of dismissive urban legends the seasoned coppers told the rookies. A black market that moved every full moon, nestled in abandoned Tube stations, selling enchanted goods and banned substances. She'd dismissed it as nonsense, another fantastical narrative spun by the fringe. Now, it was real, sprawling before her, a vibrant, terrifying reality. People—and not just people, she realized with a jolt—milled between makeshift stalls piled high with peculiar items. Gleaming blades that
seemed to
hum with an inner light. Jars filled with swirling, colored mists. Trinkets that
shimmered
with an unnatural luster. The entry requirement, the legends said, was a bone token. But she was already in. Herrera had led her through a service entrance, unwittingly granting her passage. He was nowhere in sight. But the direction of the crowd, the low murmur of
anticipation
, drew her gaze. He had to be here, somewhere amongst this throng. Harlow gripped her weapon tighter, the cold steel a reassuring presence against her palm. Her eyes scanned the crowd. Creatures with proportions she'd only ever seen in nightmares brushed past her. Horns, scales, eyes that glowed with an unsettling luminescence. The smell of strange spices mingled with something acrid, almost metallic. This was beyond her jurisdiction. Beyond anything she’d ever encountered in 18 years of decorated service. Her training, her instincts, screamed at her to retreat, to call for backup, to report this utter impossibility. But then, the thought of Morris, of the unexplained circumstances of his death, resurfaced, sharper than ever. This, she realized with a cold certainty, was where those answers lay. This unholy amalgamation of the mundane and the impossible. There was no turning back. She adjusted her grip on her weapon and pushed forward, a lone figure in a world she never knew existed, a detective chasing a ghost of a lead into the heart of the unbelievable. The Veil Market, an underground tide, pulled her deeper into its strange currents.
created_at
"2026-02-17T02:52:12.524342+00:00"
2/17/2026, 2:52:12 AM
model
"google/gemini-2.5-flash"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
274
moderation_latency
(null)
generation_time
8787
tokens_prompt
914
tokens_completion
1818
native_tokens_prompt
852
native_tokens_completion
1525
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
0.0040681
router
(null)
provider_responses
0
status
200
is_byok
false
latency
274
endpoint_id
"16c01e26-9b91-4d22-b487-ed35634b017d"
provider_name
"Google AI Studio"
model_permaslug
"google/gemini-2.5-flash"
api_type
"completions"
id
"gen-1771296722-VmkK0vEIryrVl8oE4b0b"
upstream_id
(null)
total_cost
0.0040681
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)
82.7883%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1162
totalAiIsmAdverbs
2
found
0
adverb
"cautiously"
count
1
1
adverb
"truly"
count
1
highlights
0
"cautiously"
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)
13.9415%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1162
totalAiIsms
10
found
0
word
"cacophony"
count
2
1
word
"beacon"
count
1
2
word
"throbbed"
count
1
3
word
"shimmered"
count
1
4
word
"gleaming"
count
1
5
word
"unwavering"
count
1
6
word
"newfound"
count
1
7
word
"anticipation"
count
1
8
word
"echoing"
count
1
highlights
0
"cacophony"
1
"beacon"
2
"throbbed"
3
"shimmered"
4
"gleaming"
5
"unwavering"
6
"newfound"
7
"anticipation"
8
"echoing"
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
101
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
1
hedgeCount
2
narrationSentences
101
filterMatches
0
"watch"
hedgeMatches
0
"seemed to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
0
totalSentences
101
matches
(empty)
59.8006%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
26
mean
44.23
std
15.89
cv
0.359
sampleLengths
0
74
1
83
2
61
3
66
4
29
5
35
6
11
7
42
8
56
9
48
10
37
11
49
12
40
13
42
14
48
15
41
16
33
17
23
18
62
19
40
20
27
21
28
22
51
23
34
24
38
25
52
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
1
totalSentences
101
matches
0
"being involved"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
4
totalVerbs
177
matches
0
"was quickening"
1
"was straying"
2
"was taking"
94.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
1161
adjectiveStacks
1
stackExamples
0
"narrow, graffiti-scarred alley."
adverbCount
34
adverbRatio
0.029285099052540915
lyAdverbCount
13
lyAdverbRatio
0.01119724375538329
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
101
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
101
mean
11.39
std
6.63
cv
0.583
sampleLengths
0
22
1
13
2
21
3
2
4
4
5
5
6
7
7
20
8
9
9
26
10
15
11
13
12
11
13
20
14
30
15
7
16
15
17
17
18
14
19
13
20
14
21
8
22
4
23
3
24
4
25
11
26
20
27
11
28
4
29
10
30
9
31
19
32
3
33
14
34
11
35
10
36
18
37
12
38
12
39
15
40
9
41
5
42
9
43
7
44
12
45
4
46
1
47
5
48
3
49
12
44.5545%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
10
diversityRatio
0.32673267326732675
totalSentences
101
uniqueOpeners
33
100.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
0
fancyCount
0
fancyTags
(empty)
87.9462%