NC Bench
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Run: 2026-02-17-01KHMQGH6M8NHRDWQR50J5PJRM
Run Details
Model:
Gemini 2.5 Flash
Test:
Bad Writing Habits
Scenario:
Thriller: chase through city streets
Duration:
7.5s
Cost:
$0.003618
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, unyielding curtain against the grime of Soho. Detective Harlow Quinn, her closely cropped salt-and-pepper hair plastered to her scalp, pushed through the deluge, the city lights blurring into streaky halos. Her breath hitched, ragged and burning in her lungs. The worn leather
watch
on her left wrist, despite the downpour, read 1:17 AM. Too late for this, too late for anything but the chase. A shadow, brief and swift, darted ahead. Tomás Herrera. He was quick for a medic, too quick for someone who supposedly only dealt in sutures and splints. Quinn pushed harder, her military precision a honed instinct, even as her soaked trench coat clung to her, a sodden
weight
. Three years. Three years since Morris, since the inexplicable. She wouldn't lose another. Herrera cut down a narrow alley, the darkness absolute save for the occasional flash of a distant neon sign. Quinn followed without hesitation, her hand instinctively going to the Glock holstered at her hip. The air in the alley hung heavy with the smell of damp refuse and something metallic, faintly sweet. Blood, or the memory of it. She burst out onto a wider street, the roar of a passing taxi momentarily drowning out her labored breathing. Herrera was a block ahead, weaving through the sparse late-night foot traffic like smoke. His short, curly dark brown hair gleamed under the streetlights, his olive skin slick with rain. Around his neck, the
glint
of a Saint Christopher medallion. A good luck charm, or a desperate plea for protection? Quinn swore under her breath. He ducked into an entrance she hadn't noticed, a heavy, unmarked door swallowed by the shadows between a boarded-up takeaway and a seedy massage parlor. Quinn picked up her pace, her sharp jaw set, her focus absolute. This was it. The Nest. Or at least somewhere connected to it. Silas’ bar, the hub of this whole tangled mess. She yanked the door open. A steep, narrow staircase descended into the absolute blackness. No light, no sound, just the damp, earthy smell of old stone and something else, something she couldn't quite place. Not mold, not rot, but something ancient, sleeping. Quinn hesitated. Every instinct screamed caution. This wasn't standard procedure. But then, nothing about this case had been standard. Morris. The memory of his wide, uncomprehending eyes, of the impossible wound. She wouldn't back down. Not now. She drew her weapon, the cold steel a reassuring
weight
in her hand, and flipped on the tactical light. The beam sliced through the darkness, revealing a crumbling brick tunnel, the air thick with subterranean chill. The stairs
were gone
, replaced by a sloping, uneven path. Herrera was nowhere in sight. Her boots crunched on loose gravel and shards of broken glass. The tunnel twisted, a serpentine labyrinth, and Quinn pressed forward, her senses on high alert. The sounds of the city, the rain, had vanished, replaced by a faint, rhythmic thrumming, like a distant heartbeat. Then, something else: voices. A murmur, low and indistinct, growing steadily louder. The tunnel opened into a vast, cavernous space. Quinn stopped dead, her eyes widening. This wasn't an abandoned cellar. This was a market. The Veil Market. She’d heard the whispers, the rumors. An underground market that appeared and disappeared, selling... things. Impossible things. She’d dismissed them as urban legends, the ravings of the addled and the desperate. But here it was. The air hummed with a thousand different notes: the sizzle of unfamiliar foods, the clinking of metal, the hushed bartering of voices. Lanterns, some burning with a steady, golden light, others with an eerie, colored glow, illuminated a sprawling collection of stalls. Figures, some undeniably human, others… less so, moved through the throng. A creature with too many eyes bartered intently over a coil of iridescent rope. A woman with scales instead of skin polished a dagger that
seemed to
drink the light. The sheer, overwhelming strangeness of it all threatened to buckle Quinn’s resolve. The rational, ordered world of the Metropolitan Police felt a million miles away. This was not the London she knew, not the one she had sworn to protect. This was something else entirely. Then she saw him. Tomás Herrera, his olive skin now glowing faintly under the market’s strange lights, stood at a stall where glowing vials of liquid
were displayed
like jewels. He spoke with a tall, cloaked figure whose face
was obscured
by shadow. Quinn tightened her grip on her Glock. He was here. He was part of this. And Morris… Morris had stumbled into something like this, hadn’t he? Something beyond explanation, beyond the neat categories of police procedure. Her mind raced. Follow him? Charge in, weapon drawn, into this impossible, teeming crowd? What would she even say? "Metropolitan Police, you're all under arrest for… existing?" The thought was absurd, dangerous. She was alone, outnumbered, and
utterly
out of her depth. But the alternative? To turn back, to ignore this, to let Herrera slip away? That wasn't an option. Not for her. Not after Morris. Her gaze swept across the market again, taking in the impossible faces, the strange goods, the
palpable
sense of power and danger that permeated the air. Her military training kicked in, overriding the shock, forcing her to analyze, to plan. She couldn’t go in head-on. She needed to observe, to understand. She spotted a narrow alleyway between two stalls, shrouded in deeper shadow. A chance to get closer, unseen. She would fade into the current, become another unseen observer in a place where strangeness was the norm. The risk was immense. She knew that. If she was discovered, if she was identified as an outsider, a threat… she didn't want to think about the consequences. But the truth, the nagging, relentless ghost of Morris, pulled her forward. She couldn't walk away. She wouldn't. Taking a deep breath, Quinn holstered her weapon, melting into the shadows, a hunter in a wilderness she never knew existed. The hunt, she realized, had just begun. And the rules, she suspected, were entirely different here.
created_at
"2026-02-17T02:40:23.710178+00:00"
2/17/2026, 2:40:23 AM
model
"google/gemini-2.5-flash"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
418
moderation_latency
(null)
generation_time
7523
tokens_prompt
914
tokens_completion
1579
native_tokens_prompt
852
native_tokens_completion
1345
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
0.0036181
router
(null)
provider_responses
0
status
200
is_byok
false
latency
418
endpoint_id
"16c01e26-9b91-4d22-b487-ed35634b017d"
provider_name
"Google AI Studio"
model_permaslug
"google/gemini-2.5-flash"
api_type
"completions"
id
"gen-1771296015-WMDk9AzWU4tkjdskHwvL"
upstream_id
(null)
total_cost
0.0036181
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)
90.1672%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1017
totalAiIsmAdverbs
1
found
0
adverb
"utterly"
count
1
highlights
0
"utterly"
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)
60.6686%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1017
totalAiIsms
4
found
0
word
"palpable"
count
1
1
word
"glint"
count
1
2
word
"weight"
count
2
highlights
0
"palpable"
1
"glint"
2
"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
107
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
1
hedgeCount
1
narrationSentences
107
filterMatches
0
"watch"
hedgeMatches
0
"seemed to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
0
totalSentences
107
matches
(empty)
64.0204%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
22
mean
46
std
17.21
cv
0.374
sampleLengths
0
70
1
61
2
58
3
74
4
58
5
42
6
37
7
51
8
57
9
14
10
12
11
35
12
83
13
45
14
43
15
36
16
42
17
24
18
40
19
47
20
46
21
37
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
4
totalSentences
107
matches
0
"were gone"
1
"were displayed"
2
"was obscured"
3
"was discovered, was identified"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
0
totalVerbs
161
matches
(empty)
100.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
1009
adjectiveStacks
0
stackExamples
(empty)
adverbCount
39
adverbRatio
0.03865213082259663
lyAdverbCount
14
lyAdverbRatio
0.013875123885034688
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
107
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
107
mean
9.46
std
6.29
cv
0.665
sampleLengths
0
13
1
23
2
9
3
14
4
11
5
7
6
2
7
18
8
21
9
2
10
7
11
4
12
19
13
15
14
18
15
6
16
19
17
14
18
16
19
10
20
10
21
5
22
25
23
12
24
3
25
2
26
7
27
9
28
5
29
9
30
20
31
8
32
2
33
4
34
4
35
9
36
1
37
11
38
4
39
2
40
19
41
17
42
10
43
5
44
11
45
15
46
19
47
4
48
8
49
8
48.5981%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
13
diversityRatio
0.3644859813084112
totalSentences
107
uniqueOpeners
39
100.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
0
fancyCount
0
fancyTags
(empty)
91.9679%