NC Bench
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Run: 2026-02-17-01KHMQJWDAFGRXSK7Z9Z2D5GQQ
Run Details
Model:
Gemini 3 Flash (Preview)
Test:
Bad Writing Habits
Scenario:
Mystery: examining a crime scene
Duration:
16.0s
Cost:
$0.006243
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="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 air in the abandoned Mornington Crescent tube station didn't just smell like damp concrete and old iron; it carried a metallic, ozone tang that made the hair on Harlow Quinn’s arms stand at attention. She stepped over a rusted rail, the beam of her Maglite cutting a clean circle through the subterranean gloom. Water dripped somewhere deep in the tunnels, a rhythmic, lonely sound that
echoed
off the curved tiled walls. Harlow checked the worn leather
watch
on her left wrist. 3:14 AM. Above them, Camden slept, oblivious to the labyrinthine secrets rotting beneath its streets. "Watch your step, Quinn. The grease down here hasn't been cleaned since the Blitz," uniform sergeant Miller called out. He
was standing
twenty yards ahead, his own flashlight
dancing
over a pile of crates that looked entirely too new for a station that had been officially sealed for decades. Harlow didn't answer. She moved with a
calculated
, military precision, her boots finding the dry spots on the sleeper ties. She adjusted the collar of her coat, her sharp jaw set. She had eighteen years on the force, most of it spent in the grit of the Metropolitan Police, but the last three years had changed the way she looked at shadows. Ever since DS Morris had disappeared into a London fog that
seemed to
swallow sound and light alike, Harlow had stopped believing in simple explanations. She reached the center of the platform. This wasn't just a squatter’s camp. The crates
were stamped
with symbols she didn't recognize—interlocking circles and jagged lines that looked like a language written by someone with a fever. Between the crates lay the body of a man in a
silk
suit, facedown, his fingers splayed toward a small object that
glint
ed in the dust. "Clear-cut robbery gone wrong," Miller said, shuffling over. He sounded tired, his voice thick with the desire to be back in a warm precinct office. "Looks like he was meeting someone for a high-end hand-off. Probably slipped the wrong guy a briefcase of cash, got a knife in the ribs for his trouble. We found some empty jewelry boxes in that pile over there." Harlow knelt by the body, ignoring the ache in her knees. She didn't touch the victim yet. She
watch
ed the way he fell. "Where’s the blood, Miller?" Miller blinked, shining his light around the man’s torso. "Internal hemorrhaging? Or maybe he was slumped over before he bled out. Dress like that in Camden at three in the morning, you’re asking for a bad time." "He didn't die from a knife," Harlow muttered. She leaned closer. There were no wounds on his back, no tears in the expensive charcoal wool of his jacket. She
gently
turned the man’s head with a gloved hand. His eyes were wide, the pupils blown out, and his skin had a translucent, waxy quality, as if the life had
been sucked
out of him through a straw. "And look at his hand." Just inches from the man’s cooling fingertips lay a small brass compass. It
was covered
in a thick patina of verdigris, the green oxidation crusting over deep-
etched
sigils on its casing. Harlow’s heart gave a dull, heavy thud against her ribs. She’d seen markings like that once before, scribbled in Morris’s final notebook. "Evidence bag," she snapped. "Quinn, come on, it’s a compass. Probably an antique he was trying to hawk," Miller said, though he reached into his kit. Harlow didn't wait for him. She hovered her hand over the device. It
was humming
. Not a sound, but a vibration that traveled through the air, hitting her in the teeth. The needle
wasn't pointing
North. It
was spinning
in a frantic, jittery circle, occasionally snapping toward a bricked-up archway at the far end of the platform. "This is the Veil Market," Harlow whispered, the realization settling in her gut like lead. "The what?" "A ghost story," she said, her voice tight. "At least, that’s what the informants call it. A black market that moves e
very
full moon. They sell things that shouldn't exist. Information, substances, relics." She looked at the man in the suit. "He wasn't a victim of a robbery. He was a buyer. And he didn't bring enough to the table." She stood up and scanned the perimeter. Her eyes caught a
flicker
of movement near a stack of crates twenty feet away. A shock of curly red hair and the
glint
of round glasses. "Police! Don't move!" Harlow shouted, her hand flying to her holster out of pure reflex. The figure didn't run. Instead, a young woman stepped into the light, looking more annoyed than frightened. She wore a heavy green coat and carried a worn leather satchel that looked heavy enough to be filled with lead. She was busy tucking a stray curl behind her left ear with a nervous, rapid motion. "I’m not a criminal, Detective," the girl said, her voice surprisingly steady despite her frantic habit. "I’m a researcher. And if you
touch that compass
without a lead lining, you’re going to have a
very
difficult headache for the next three days." "Identify yourself," Harlow commanded, her flashlight beam pinning the girl. "Eva Kowalski. I work at the British Museum. Restricted archives," the girl said, squinting against the light. "I heard the chatter on the fringe boards. I knew the Market was moving through Mornington this month. I was hoping to beat the cleanup crew." Harlow didn't lower her light. "You’re a long way from the museum, Miss Kowalski. And you’re standing over a dead body in a restricted Tube tunnel." Eva stepped closer, her freckled complexion pale under the harsh LED glow. She looked down at the victim with a mixture of pity and professional curiosity. "He’s not dead because of the Market. He’s dead because he tried to use a bone token that didn't belong to him. The wards on the entry point... they’re quite literal about identity theft." "Bone tokens? Wards?" Miller scoffed, stepping forward. "Look, kid, stay right there. You’re coming in for questioning." "Wait," Harlow said, her eyes narrowing as she
watch
ed Eva. The girl wasn't looking at the officers; she
was looking
at the brass compass. "You know what that tool is?" "It’s a Veil Compass," Eva said, her gaze drifting to the spinning needle. "Crafted by a Shade artisan. It doesn't find
magnetic
North, Detective. It finds rifts. Portals where the membrane between here and... somewhere else... is thin. The needle is spinning because the Market just folded. The energy hasn't dissipated yet." Harlow felt a familiar chill. This was the missing link. For three years, she’d been chasing ghosts, looking for a logical explanation for why DS Morris had walked into a warehouse and never walked out. The department had called it a mental break, a disappearance, a tragedy. But Harlow had seen the way the air had
shimmered
behind him. "Why are you here, Eva?" Harlow asked, her voice dropping an octave. Eva reached into her satchel, pulling out a small, leather-bound notebook. She looked at Harlow, and for the first time, the detective saw a spark of shared obsession in the girl’s green eyes. "Because things are leaking through. This man—he was a collector. Small-time. He thought he could buy his way into the underground. But you can’t buy entry to the Veil Market unless you know the language." Harlow looked back at the compass. The needle
suddenly
stopped its frantic spinning and locked dead onto the bricked-up archway. "Miller, get the crime scene tape up. Call for a forensics sweep, tell them to prioritize the chemical traces on the victim's skin," Harlow ordered. "Quinn, you’re not seriously listening to this—" "Do it, Miller!" Harlow snapped. She turned back to Eva, who was already shivering in the damp cold. "You’re coming with me, Miss Kowalski. But we’re not going to the precinct. You’re going to tell me exactly what those sigils mean, and why that compass is pointing at a solid brick wall." Eva tucked her hair behind her ear again, a small, knowing smile touching her lips. "It’s not a wall, Detective. It’s a door. You just haven't learned how to knock yet." Harlow Quinn looked at the worn leather
watch
on her wrist. The second hand was moving backward. She didn't panic. For the first time in three years, she felt like she was finally heading in the right direction. She reached down, picked up the brass compass—ignoring the sharp, static shock that raced up her arm—and tucked it into her pocket. "Show me," Harlow said.
created_at
"2026-02-17T02:41:48.955597+00:00"
2/17/2026, 2:41:48 AM
model
"google/gemini-3-flash-preview-20251217"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
868
moderation_latency
(null)
generation_time
15899
tokens_prompt
923
tokens_completion
2169
native_tokens_prompt
883
native_tokens_completion
1934
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
0.0062435
router
(null)
provider_responses
0
status
200
is_byok
false
latency
868
endpoint_id
"6e82f652-2693-4b60-bbe0-7362d6e345f0"
provider_name
"Google AI Studio"
model_permaslug
"google/gemini-3-flash-preview-20251217"
api_type
"completions"
id
"gen-1771296092-bJ6SVA9YWwuEQrbvYyIk"
upstream_id
(null)
total_cost
0.0062435
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
17
adverbTagCount
1
adverbTags
0
"the girl said, her voice surprisingly steady despite her frantic habit [surprisingly]"
79.1956%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1442
totalAiIsmAdverbs
3
found
0
adverb
"gently"
count
1
1
adverb
"suddenly"
count
1
2
adverb
"very"
count
1
highlights
0
"gently"
1
"suddenly"
2
"very"
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)
37.5867%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1442
totalAiIsms
9
found
0
word
"flicker"
count
1
1
word
"shimmered"
count
1
2
word
"glint"
count
1
3
word
"silk"
count
1
4
word
"calculated"
count
1
5
word
"magnetic"
count
1
6
word
"dancing"
count
1
7
word
"echoed"
count
1
8
word
"etched"
count
1
highlights
0
"flicker"
1
"shimmered"
2
"glint"
3
"silk"
4
"calculated"
5
"magnetic"
6
"dancing"
7
"echoed"
8
"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
81
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
2
hedgeCount
1
narrationSentences
81
filterMatches
0
"watch"
hedgeMatches
0
"seemed to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
1
totalSentences
98
matches
0
"touch that compass"
100.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
37
mean
38.65
std
22.68
cv
0.587
sampleLengths
0
72
1
25
2
49
3
87
4
63
5
64
6
27
7
37
8
72
9
53
10
4
11
22
12
57
13
15
14
2
15
60
16
34
17
15
18
54
19
42
20
10
21
43
22
26
23
60
24
17
25
30
26
52
27
59
28
12
29
68
30
20
31
25
32
7
33
52
34
31
35
60
36
4
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
3
totalSentences
81
matches
0
"were stamped"
1
"been sucked"
2
"was covered"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
6
totalVerbs
153
matches
0
"was standing"
1
"was humming"
2
"wasn't pointing"
3
"was spinning"
4
"was looking"
88.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
952
adjectiveStacks
2
stackExamples
0
"over deep-etched sigils"
1
"small, leather-bound notebook."
adverbCount
27
adverbRatio
0.028361344537815126
lyAdverbCount
9
lyAdverbRatio
0.009453781512605041
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
98
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
98
mean
14.59
std
9.21
cv
0.631
sampleLengths
0
35
1
19
2
18
3
10
4
2
5
13
6
19
7
30
8
3
9
17
10
11
11
31
12
25
13
7
14
6
15
24
16
26
17
8
18
17
19
39
20
11
21
6
22
6
23
4
24
9
25
28
26
8
27
3
28
17
29
10
30
29
31
5
32
12
33
19
34
10
35
12
36
4
37
22
38
5
39
7
40
3
41
16
42
5
43
21
44
15
45
2
46
8
47
33
48
19
49
7
68.0272%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
5
diversityRatio
0.4387755102040816
totalSentences
98
uniqueOpeners
43
0.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
17
fancyCount
13
fancyTags
0
"uniform sergeant Miller called out (call out)"
1
"Miller said, shuffling over (say, shuffle)"
2
"Harlow muttered (mutter)"
3
"she snapped (snap)"
4
"Miller said, though he reached into his kit (say, reach)"
5
"Harlow whispered, the realization settling in her gut like lead (whisper, settle in)"
6
"shouted (shout)"
7
"Harlow commanded, her flashlight beam pinning the girl (command, pin)"
8
"the girl said, squinting against the light (say, squint)"
9
"Harlow said, her eyes narrowing as she watched Eva (say, narrow watch)"
10
"Eva said, her gaze drifting to the spinning needle (say, drift)"
11
"Harlow ordered (order)"
12
"snapped (snap)"
86.6359%