NC Bench
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Run: 2026-02-17-01KHMQXXGW3YJYSEKT4TSVAPVW
Run Details
Model:
Gemini 3 Pro (Preview)
Test:
Bad Writing Habits
Scenario:
Mystery: examining a crime scene
Duration:
56.4s
Cost:
$0.046802
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 damp air beneath Camden tasted of copper and stagnant water, a flavor that coated the back of Harlow Quinn’s throat and refused to wash away. She adjusted the beam of her torch, the heavy Maglite feeling like a reassuring anchor in her grip, and swept the light across the tiled curve of the tunnel wall. Above ground, the London rush hour was likely a
cacophony
of diesel engines and shouting tourists, but down here in the exclusion zone, the silence was absolute. It was a heavy, suffocating quiet that pressed against her eardrums. Harlow checked the worn leather
watch
on her left wrist. 0:200 hours. She had followed the breadcrumbs of a missing persons report—a low-level fence named Silas Vane—straight to a boarded-up access point of the Northern Line. The padlock had
been dissolved
by acid, not cut. That was the first irregularity. She stepped over a pile of refuse that looked suspiciously like the remnants of a wooden stall. This wasn’t just an abandoned maintenance shaft; the space opened up into a platform that shouldn’t have existed on any city map. The air grew colder, biting through her coat, smelling of ozone and something sweet, like rotting lilies. "Police!" Harlow shouted, her voice cracking the silence. "Come out with your hands visible." Nothing but the drip of condensation. She advanced with the military precision that had defined her eighteen years on the force. Her boots made no sound on the grime-slicked concrete. She found Silas Vane twenty yards down the platform, slumped against a ticket booth that advertised prices from four decades ago. At a glance, it looked like an overdose. Vane
was sitting
up, head lolled back, eyes open. But as Harlow crouched, her knees popping
slightly
, she saw the impossibility of it. There was no rigor. There was no bloat. Vane looked like a deflated balloon, his skin grey and papery, draped
loosely
over a skeletal frame that
seemed to
o small for the clothes. He hadn't been dead for days; the coffee cup next to his boot was still warm. "Don't touch him," a voice
echoed
from the shadows of a ventilation alcove. Harlow spun, her sidearm clearing its holster in a smooth, practiced motion. "Hands. Now." A figure emerged
slowly
, hands raised to shoulder height. Even in the harsh glare of the flashlight, the intruder looked painfully out of place. Curly red hair caught the light, framing a pale, freckled face dominated by round glasses. She wore a heavy coat and a worn leather satchel that looked ready to burst at the seams. "Eva Kowalski," Harlow said, her tone flat. She didn't lower the weapon. "I should have known. Wherever there's a circus, the clowns aren't far behind." Eva flinched but didn't retreat. She
nervously
tucked a stray curl of hair behind her left ear—a tick Harlow had seen a dozen times during previous interrogations. "Detective Quinn. I didn't kill him. I found him like this five minutes ago." "Trespassing at a crime scene is a good start to a conviction, Eva. Step away from the body." Eva hesitated, her green eyes darting between Harlow and the corpse. "It’s not a crime scene, Detective. It’s a breach. If you touch him, the residual entropy might..." She trailed off, seeing the tightening in Harlow’s sharp jaw. "Just don't touch the skin." Harlow holstered her weapon but kept her hand near her belt. She turned her attention back to Vane. The scene didn't add up. There were no drag marks, no blood spatter, no sign of a struggle. It was as if the man had simply sat down and evaporated from the inside out. "Talk," Harlow commanded, leaning in to inspect a strange scorch mark on the floor near Vane's heel. "And it better be good. Why are you in a condemned Tube station in the middle of the night?" "It's the Veil Market," Eva said, her voice trembling
slightly
but gaining strength as she slipped into academic mode. She gestured vaguely at the debris around them. "It moves every full moon. They sell... things. Things that aren't regulated." "Drugs," Harlow corrected. "No. Not exactly." Eva reached into her pocket. Harlow tensed, but Eva produced a small, round object. It was a brass compass, the casing thick with a patina of verdigris, the face
etched
not with cardinal directions, but with angular, shifting sigils. "I came looking for this. The Veil Compass. Silas was supposed to sell it to a private collector. I wanted to intercept it for the Archives." Harlow snatched the object from Eva’s hand. It was cold, heavier than it looked. The needle inside didn't float; it vibrated, snapping erratically. "Toy compasses. Is that the defense? You're here for trinkets?" "It points to energy rifts," Eva insisted. "Look at the needle, Detective. It’s not pointing North. It’s pointing at *him*." Harlow looked down. The needle was indeed locked onto the corpse, quivering like a darkly magnetized moth. She frowned, the headache that had started the moment she descended the stairs engaging a new gear. She thought of Morris. Three years ago. A warehouse in Shoreditch. He had looked similar—drained, empty, the physics of his death defying the coroner’s report. The department called it a gas leak, a chemical reaction. Harlow knew better, even if she didn't possess the vocabulary to explain it. She looked at Eva,
really
looked at her. The young woman wasn't acting like a criminal caught in the act; she
was acting
like a bomb disposal technician
watch
ing someone play with a wire. "Explain the body, Miss Kowalski," Harlow said, her voice dropping an octave. "scientifically." "I can't explain it scientifically," Eva said, hugging her satchel to her chest. "But mythologically... the Market has an entry requirement. A 'bone token.' Usually, it’s a literal token carved from animal bone. A currency of passage." "And?" "And if you try to enter without paying, or if you try to steal from a Shade artisan..." Eva nodded toward the grey husk of Silas Vane. "The Market takes the toll directly. It harvests the calcium right out of your body. Instantaneously." Harlow scoffed, a sharp, cynical sound. "Calcification takes years. Or a vat of acid. There’s no acid here." "It's not acid. It's an exchange." Harlow turned back to the corpse. She pulled a pen from her pocket and used it to lift the edge of Vane’s sleeve. Beneath the hem, the skin wasn't just grey; it
was dusted
with a fine white powder. She brought the light closer. The powder coated the floor in a perfect circle around where he sat. It wasn’t dust. It was meal. Harlow stood up, her heart hammering against her ribs with a rhythm she hadn't felt since Shoreditch. The concrete details she relied on—fingerprints, motive, ballistics—
were dissolving
. But the pattern was there. The circle of white dust. The vibration of the brass compass in her hand. The way the shadows in the station
seemed to
stretch toward the body, unnatural and hungry. She looked at the compass again. The needle had shifted. It was no longer pointing at Vane. It
was pointing
behind Harlow. She spun around, beam slicing the dark. The empty tunnel mouth yawned back at her. "Eva," Harlow said, her voice void of its usual mockery. "You said this compass points to rifts?" "Yes. Portals. Rents in the veil." "It just moved." Eva’s face drained of color, her freckles standing out like islands on a map. "Moved where?" "Behind us. Toward the exit." A low sound
began to
hum through the tracks—not the mechanical rumble of a distant train, but a groan of metal twisting under immense pressure. The air pressure dropped so
sharply
Harlow’s ears popped. "The Market," Eva whispered, backing up until she bumped into Harlow’s shoulder. "It’s not abandoned, Detective. It was just dormant. We’re not alone down here." Harlow Quinn didn't believe in ghosts. She didn't believe in magic. She believed in cause and effect. But as the temperature plummeted and frost
began to
spiderweb across the lens of her flashlight, she realized the cause was something she couldn't arrest, and the effect was likely going to be lethal. She shoved the compass into her pocket and grabbed Eva by the arm of her coat. "We're leaving. Now." "We can't just leave him," Eva protested weakly, though her feet were already moving. "He's dust, Eva," Harlow snapped, dragging the younger woman toward the spiral stairs. "And if we don't move, we're going to remain part of the inventory." As they ran, the shadows behind them
seemed to
detach from the walls, elongated and fluid, sliding over the "bone token" that used to be Silas Vane, consuming what little was left. Harlow didn't look back. She just focused on the steps, the heavy grip of her pistol, and the impossible, vibrating
weight
of the compass in her pocket. The evidence didn't add up, but for the first time in three years, she had a lead on the impossible.
created_at
"2026-02-17T02:48:30.99707+00:00"
2/17/2026, 2:48:30 AM
model
"google/gemini-3-pro-preview-20251117"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
9085
moderation_latency
(null)
generation_time
56313
tokens_prompt
923
tokens_completion
2982
native_tokens_prompt
883
native_tokens_completion
3753
native_tokens_completion_images
0
native_tokens_reasoning
1695
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
0.046802
router
(null)
provider_responses
0
status
200
is_byok
false
latency
9085
endpoint_id
"c9badacd-c552-40a2-86e6-4b4e8dd4318f"
provider_name
"Google AI Studio"
model_permaslug
"google/gemini-3-pro-preview-20251117"
api_type
"completions"
id
"gen-1771296454-KpPmZyOb9EidYoKEjLRB"
upstream_id
(null)
total_cost
0.046802
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
82.0513%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
13
adverbTagCount
2
adverbTags
0
"Eva said, her voice trembling slightly but gaining strength as she slipped into academic mode [slightly]"
1
"Eva protested weakly, though her feet were already moving [weakly, already]"
53.5193%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1506
totalAiIsmAdverbs
7
found
0
adverb
"loosely"
count
1
1
adverb
"nervously"
count
1
2
adverb
"sharply"
count
1
3
adverb
"slightly"
count
2
4
adverb
"slowly"
count
1
5
adverb
"really"
count
1
highlights
0
"loosely"
1
"nervously"
2
"sharply"
3
"slightly"
4
"slowly"
5
"really"
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)
73.4396%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1506
totalAiIsms
4
found
0
word
"cacophony"
count
1
1
word
"weight"
count
1
2
word
"echoed"
count
1
3
word
"etched"
count
1
highlights
0
"cacophony"
1
"weight"
2
"echoed"
3
"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
102
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
1
hedgeCount
5
narrationSentences
102
filterMatches
0
"watch"
hedgeMatches
0
"seemed to"
1
"began to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
0
totalSentences
127
matches
(empty)
100.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
48
mean
31.17
std
22.71
cv
0.729
sampleLengths
0
94
1
50
2
56
3
14
4
6
5
45
6
31
7
48
8
13
9
14
10
57
11
25
12
41
13
18
14
43
15
52
16
36
17
39
18
3
19
68
20
33
21
20
22
82
23
34
24
13
25
37
26
1
27
43
28
18
29
6
30
57
31
6
32
61
33
17
34
5
35
15
36
17
37
6
38
3
39
16
40
5
41
34
42
25
43
51
44
19
45
14
46
26
47
79
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
2
totalSentences
102
matches
0
"been dissolved"
1
"was dusted"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
4
totalVerbs
197
matches
0
"was sitting"
1
"was acting"
2
"were dissolving"
3
"was pointing"
94.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
1178
adjectiveStacks
1
stackExamples
0
"twisting under immense pressure."
adverbCount
34
adverbRatio
0.028862478777589132
lyAdverbCount
17
lyAdverbRatio
0.014431239388794566
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
127
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
127
mean
11.78
std
7.39
cv
0.627
sampleLengths
0
26
1
30
2
27
3
11
4
10
5
2
6
24
7
9
8
5
9
17
10
22
11
17
12
8
13
6
14
6
15
15
16
9
17
21
18
8
19
9
20
14
21
4
22
4
23
24
24
16
25
13
26
12
27
2
28
9
29
15
30
15
31
18
32
7
33
5
34
13
35
5
36
22
37
14
38
18
39
11
40
27
41
5
42
11
43
7
44
5
45
13
46
16
47
17
48
19
49
19
49.8688%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
10
diversityRatio
0.3464566929133858
totalSentences
127
uniqueOpeners
44
0.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
13
fancyCount
11
fancyTags
0
"shouted (shout)"
1
"a voice echoed from the shadows of a ventilation alcove (echo)"
2
"Harlow commanded, leaning in to inspect a strange scorch mark on the floor near Vane's heel (command, lean in inspect)"
3
"Eva said, her voice trembling slightly but gaining strength as she slipped into academic mode (say, tremble slightly gain slip)"
4
"Harlow corrected (correct)"
5
"Eva insisted (insist)"
6
"Harlow said, her voice dropping an octave (say, drop)"
7
"Eva said, hugging her satchel to her chest (say, hug)"
8
"Eva whispered, backing up until she bumped into Harlow’s shoulder (whisper, back up bump)"
9
"Eva protested weakly, though her feet were already moving (protest weakly, already move)"
10
"Harlow snapped, dragging the younger woman toward the spiral stairs (snap, drag)"
85.4635%