NC Bench
Overview
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Run: 2026-02-17-01KHMR767VSZPJZQWANYTH9MQ9
Run Details
Model:
Gemini 3 Flash (Preview)
Test:
Bad Writing Habits
Scenario:
Mystery: examining a crime scene
Duration:
15.4s
Cost:
$0.006249
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 humidity of the derelict Tube station clung to Harlow Quinn’s skin like a damp shroud. It was an unnatural heat for October in London, one that smelled less of subway grime and more of scorched ozone and old copper. She stepped over a rusted rail, the heels of her boots ringing hollow against the subterranean silence. Harlow checked the worn leather
watch
on her left wrist. Three in the morning. She had spent the last twenty minutes
navigating
the labyrinthine service tunnels beneath Camden, guided by a frantic tip from a regular informant. Now, standing on the platform of what the locals called the Veil Market, she felt the familiar
weight
of dread settle behind her ribs. The station
was supposed
to be abandoned, a ghost of the Victorian underground, but the evidence of life—and something far stranger than life—was everywhere. Stalls made of salvaged timber and scrap metal lined the edges of the platform, draped in tattered silks that still
shimmered
with a faint, oily luminescence. The air vibrated with a low-frequency hum that made the fillings in Harlow’s teeth ache. "Detective. You’re late to the party." Harlow didn't need to turn to identify the voice. DS Miller
was standing
near a central fountain that shouldn’t have existed, carved from a single slab of obsidian that bled black water into a circular basin. Miller was a good officer, but he was a man who saw the world in straight lines and primary colors. He lacked the scar tissue that lived on Harlow’s psyche—the kind that came from losing a partner to a shadow and
being told
by the brass it was a gas leak. "Tell me what we've got, Miller," Harlow said, her voice a low rasp. She kept her eyes moving, scanning the perimeter. Her closely cropped salt-and-pepper hair caught the
flicker
of a distant torch. "Double homicide," Miller said, gesturing toward the base of a merchant’s stall. "Looks like a deal gone wrong. We’ve got two males, mid-thirties, both dressed like they lost a fight with a Renaissance fair. No ID, but the contents of their pockets are… unusual." Harlow approached the bodies. They lay sprawled on the grimy tiles, their limbs tangled in a way that suggested a sudden, violent cessation of movement. She knelt, her sharp jaw tightening as she looked at the first victim. He
was wearing
heavy robes of reinforced leather, and tucked into his belt was a pouch that had spilled open. "They're calling it a robbery-homicide," Miller continued, scribbling in his notebook. "The place is a black market, obviously. Probably a dispute over the price of the contraband." Harlow reached out, not touching the body, but hovering her hand an inch above the victim’s chest. "There’s no blood, Miller." "Internal hemorrhaging, maybe? Or a clean puncture we haven't found yet." "Look at the tiles," Harlow said, pointing to the ground. There were shards of glass everywhere—deep green glass that looked like it had
been blown
from sand and emeralds. "And look at their hands." The victims’ fingers
were charred
black at the tips, as if they’d reached into a furnace. But their clothing remained untouched by fire. "Must have been some kind of chemical agent," Miller muttered, though his voice lacked conviction. He stepped closer, peering over her shoulder. "Wait, what's that in his hand?" Harlow used a pen to pry open the dead man's fingers. Nestled in his palm was a small brass compass. The casing was thick with a patina of verdigris, and the face
was etched
with sigils that made Harlow’s eyes swim if she stared at them too long. The needle
wasn't pointing
North. It
was spinning
in a slow, erratic circle, clicking like a panicked heartbeat. "A Veil Compass," Harlow whispered. "A what?" "A shadow compass. It doesn’t find
magnetic
north. It finds rifts." Harlow stood up, her brow
furrowing
. "This wasn't a robbery. If someone wanted the goods, they would have taken this. This thing is worth more than a decade’s salary on the street." She scanned the market again, her brown eyes narrowing. About ten yards away, near a stack of discarded crates, a figure
was crouching
. The person was small, dwarfed by a heavy, worn leather satchel. A shock of curly red hair escaped from under a knitted cap, and the
glint
of round glasses caught the dim light. "Hey!" Harlow shouted, her hand instinctively dropping to the holster at her hip. "Police! Don't move!" The figure jumped, nearly knocking over a pile of ancient-looking scrolls. It was a girl—hardly more than a student. She looked up, her freckled complexion pale with terror. "I wasn't doing anything!" the girl cried, her voice trembling. She immediately tucked a stray strand of hair behind her left ear—a nervous tic that spoke of chronic anxiety. "I’m just… I’m a researcher! I have credentials!" Harlow moved toward her with military precision, her boots clicking rhythmically. "You’re in a restricted crime scene, kid. That’s a hell of a place for a research trip." "I'm Eva. Eva Kowalski," the girl said, clutching her satchel to her chest as if it were a shield. "I work at the British Museum. The archives." "The restricted archives," Harlow corrected, noticing the museum ID clipped to the girl's belt. "The ones that deal with things that don't officially exist. What are you doing here, Eva?" Eva looked at the bodies, then back at Harlow. Her green eyes were wide behind her lenses. "I heard there was an opening. A rift in the ley line under Camden. I came to stabilize it, but I was too late." "Stabilize it?" Miller scoffed, joining them. "It's a murder scene, girl. Not a science project." "You're wrong," Eva said, her voice gaining a sudden, sharp edge of authority. "Look at the floor. Look at the shadows." Harlow looked. At first, she saw nothing but the
flicker
ing play of the torches. But then she realized the shadows cast by the stalls
were pointing
toward the center of the platform—directly toward the obsidian fountain. The light source was behind them, yet the shadows
were defying
the physics of light. "They didn't die from a weapon," Eva whispered. "They were caught in the backwash. Someone used a bone token to force entry into the Market, but they didn't have the right
resonance
. They tore the Veil. The compass in that man's hand? It was trying to track a hole in reality. They weren't killed by a person. They were killed by the atmosphere." Harlow felt a chill that had nothing to do with the damp air. It was the same feeling she’d had three years ago, standing over DS Morris’s body in that warehouse in Whitechapel. The same impossible shadows, the same smell of ozone. "Who else was here, Eva?" Harlow asked, her voice softening. She could see the girl was on the verge of a breakdown. "Who were they meeting?" Eva hesitated, her fingers white-knuckled on the strap of her bag. "I don't know names. But there’s a group. A clique. They’ve been buying up everything related to the London rifts. Alchemical substances, enchanted artifacts... they’re looking for something specific." "What?" "A way through," Eva said. "They don't want to just visit the Market. They want to tear the door off the hinges." Harlow looked back at the bodies, then at the spinning needle of the Veil Compass. The evidence was right there, hidden in plain sight, invisible to men like Miller because they refused to believe the world was wider and darker than their manuals suggested. She turned back to Eva, a new resolve hardening her features. "You’re coming with me, Kowalski. If you’re as good a researcher as you say, you’re going to help me find out who’s responsible for this. Because the people I’m looking for? They don't care who gets caught in the backwash." "Detective, you can't be serious," Miller protested. "She’s a civilian. And this... this talk of rifts is nonsense. It’s a gang hit." Harlow didn't look at him. She
was focused
on the girl with the red hair and the leather satchel. "The world is changing, Miller. Either you start seeing it, or you get out of the way." She reached down and picked up the Veil Compass, the verdigris cold against her palm. The needle gave a violent jerk, pointing directly at the tunnel she had just walked through. "They're still here," Harlow said, her voice a low promise of retribution. "And they're just getting started."
created_at
"2026-02-17T02:52:54.066384+00:00"
2/17/2026, 2:52:54 AM
model
"google/gemini-3-flash-preview-20251217"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
773
moderation_latency
(null)
generation_time
15299
tokens_prompt
923
tokens_completion
2166
native_tokens_prompt
883
native_tokens_completion
1936
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
0.0062495
router
(null)
provider_responses
0
status
200
is_byok
false
latency
773
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-1771296758-tZjbGpquKDdzBzVyUaC2"
upstream_id
(null)
total_cost
0.0062495
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
16
adverbTagCount
0
adverbTags
(empty)
100.0000%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1430
totalAiIsmAdverbs
0
found
(empty)
highlights
(empty)
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)
37.0629%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1430
totalAiIsms
9
found
0
word
"resonance"
count
1
1
word
"flicker"
count
1
2
word
"shimmered"
count
1
3
word
"glint"
count
1
4
word
"magnetic"
count
1
5
word
"furrowing"
count
1
6
word
"weight"
count
1
7
word
"etched"
count
1
8
word
"navigating"
count
1
highlights
0
"resonance"
1
"flicker"
2
"shimmered"
3
"glint"
4
"magnetic"
5
"furrowing"
6
"weight"
7
"etched"
8
"navigating"
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
75
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
1
hedgeCount
0
narrationSentences
75
filterMatches
0
"watch"
hedgeMatches
(empty)
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
0
totalSentences
101
matches
(empty)
100.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
41
mean
34.54
std
19.28
cv
0.558
sampleLengths
0
57
1
61
2
65
3
6
4
87
5
33
6
44
7
58
8
27
9
21
10
11
11
34
12
23
13
28
14
66
15
5
16
2
17
43
18
56
19
16
20
28
21
37
22
28
23
27
24
30
25
41
26
15
27
21
28
51
29
63
30
42
31
26
32
40
33
1
34
22
35
44
36
51
37
22
38
36
39
31
40
17
80.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
6
totalSentences
75
matches
0
"was supposed"
1
"being told"
2
"been blown"
3
"were charred"
4
"was etched"
5
"was focused"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
7
totalVerbs
173
matches
0
"was standing"
1
"was wearing"
2
"wasn't pointing"
3
"was spinning"
4
"was crouching"
5
"were pointing"
6
"were defying"
100.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
967
adjectiveStacks
0
stackExamples
(empty)
adverbCount
22
adverbRatio
0.022750775594622543
lyAdverbCount
10
lyAdverbRatio
0.010341261633919338
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
14.02
std
8.55
cv
0.61
sampleLengths
0
16
1
24
2
17
3
10
4
4
5
23
6
24
7
24
8
26
9
15
10
6
11
9
12
27
13
20
14
31
15
13
16
8
17
12
18
12
19
32
20
4
21
21
22
13
23
20
24
11
25
16
26
17
27
4
28
11
29
10
30
19
31
5
32
16
33
7
34
15
35
7
36
6
37
11
38
9
39
28
40
5
41
13
42
5
43
2
44
17
45
26
46
9
47
14
48
11
49
22
53.4653%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
6
diversityRatio
0.3564356435643564
totalSentences
101
uniqueOpeners
36
0.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
16
fancyCount
14
fancyTags
0
"Harlow said, her voice a low rasp (say, voice)"
1
"Miller said, gesturing toward the base of a merchant’s stall (say, gesture)"
2
"Miller continued, scribbling in his notebook (continue, scribble)"
3
"Harlow said, pointing to the ground (say, point)"
4
"Miller muttered, though his voice lacked conviction (mutter, lack)"
5
"Harlow whispered (whisper)"
6
"shouted (shout)"
7
"cried (cry)"
8
"the girl said, clutching her satchel to her chest as if it were a shield (say, clutch be)"
9
"Harlow corrected, noticing the museum ID clipped to the girl's belt (correct, notice clip)"
10
"Eva said, her voice gaining a sudden, sharp edge of authority (say, gain)"
11
"Eva whispered (whisper)"
12
"Miller protested (protest)"
13
"Harlow said, her voice a low promise of retribution (say, voice)"
86.5017%