NC Bench
Overview
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Run: 2026-02-17-01KHMR1EDRV1HHJC3PWG1MGG9K
Run Details
Model:
Gemini 2.5 Flash
Test:
Bad Writing Habits
Scenario:
Mystery: examining a crime scene
Duration:
9.0s
Cost:
$0.004652
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 old Tube station smelled of damp earth and stale oil. Detective Harlow Quinn stepped onto the platform, her boots
echoing
on cracked tiles. Above, rusted girders crisscrossed the vaulted ceiling, barely visible in the gloom. The air hung thick and cold, carrying a faint, cloying sweetness. “Quinn, you made it.” Eva Kowalski, her round glasses perched on her nose, pushed a strand of curly red hair behind her left ear. She stood by a yellowed crime scene tape, a worn leather satchel bulging with books slung over her shoulder. Eva, at 5’4”, always
seemed to
be looking up at Quinn, even when their gazes met level. Quinn, 5’9” with closely cropped salt-and-pepper hair, gave a curt nod. Her sharp jaw was set. “What’ve we got?” Her worn leather
watch
on her left wrist showed a quarter past three. She hadn’t slept much. “Another one.” Eva gestured vaguely towards the center of the platform. “Same M.O. as the others.” Quinn scanned the scene. A makeshift stall, overturned and splintered, lay near the tracks. It looked like it had been selling various trinkets, now scattered amongst the debris. The platforms themselves
were carved
not with the usual station names, but with crude, unfamiliar symbols that glowed faintly. A faint hum vibrated beneath her feet. “Same M.O.,” Quinn repeated, her voice flat. “Meaning what, exactly? A magically induced heart attack? Another spontaneous combustion?” Eva sighed. “The official report will say accidental death due to structural collapse. They’ll blame the old tunnel system. But you and I both know…” She trailed off, glancing around as if the shadows themselves might be listening. Quinn ignored the dramatic pause. eighteen years of distinguished service had taught her to trust her gut, not whispered conspiracies. She walked towards the overturned stall, her gaze sweeping over the scene with military precision. The platform was scattered with an array of objects: a few strange bone tokens, vials of iridescent liquid, a small brass compass with a patina of verdigris whose face
was etched
with protective sigils. The Veil Compass. One of the forbidden items from the Veil Market. She squatted, examining the compass. The needle, instead of pointing north,
quivered
erratically, then settled, pointing towards a section of the tunnel where the light
seemed to
warp, like heat shimmering above asphalt. A rift. “This market,” Quinn said, picking up a shard of what looked like hardened moonlight. “You’re sure it’s what we thought?” “The Veil Market,” Eva affirmed. “Every full moon, it moves. This month, it’s an abandoned Tube station beneath Camden. Or rather, it *was* an abandoned Tube station. Until this.” She gestured to the surrounding devastation. The victim lay slumped against the far wall, obscured by a canvas tarp. Quinn needed to see him. “Description of the deceased?” “Male, early twenties. Vendor, by the looks of it. No ID. Cause of death still pending, but… the paramedics seemed confused.” Eva hesitated. “Heart failure was mentioned, but they couldn’t explain the… lack of struggle.” Quinn approached the tarp. A uniformed officer stood guard. “Detective Quinn. Let me see.” The officer, a fresh-faced rookie, pulled back the tarp. The young man’s face was serene, almost peaceful. Too peaceful. There were no signs of struggle, no frantic handprints on the dust, no scuff marks from a desperate kick. He wore simple, dark clothes, unmarred. “No visible injuries,” the rookie offered, unnecessarily. Quinn leaned closer. The skin around the victim’s eyes and mouth was unnaturally pale, almost translucent. A faint odor, like ozone mixed with something burnt, emanated from him. “He’s desiccated,” Quinn observed, her eyes narrowing. “Not just pale. Dried out.” Eva joined her. “I noticed that too. Not exactly typical heart failure, is it?” “No.” Quinn stood, surveying the chaos again. The wood of the stall
was splintered
inwards, as if something had burst *out* of it. The various items, like the bone tokens and vials, were scattered but unbroken. Nothing suggested an explosion, or even a violent impact. “The official report will still say structural collapse,” Eva reminded her. “The brass wants this wrapped up. No one wants to admit a black market operating under their noses, let alone one that deals in… these sorts of goods.” She nudged a vial with her toe. Quinn ignored her. “If it was a structural collapse,” she began, thinking aloud, “why are there no massive pieces of debris? Why is the collapse so localized to this single stall? And why is the victim’s body… like this?” “Perhaps the collapse was specific,” Eva suggested. “Targeted.” Quinn shook her head. “Tunnel collapse doesn’t target. And if it was targeted, where's the weapon? The explosive residue?” She walked around the crime scene, her mind piecing together the anomalies. The Veil Compass pointed towards a rift. The victim
was desiccated
. The stall was damaged from the inside out. “What was he selling?” Quinn asked, turning to Eva. Eva shrugged. “General enchanted goods, I imagine. Banned alchemical substances. Information.” Quinn's gaze caught on a faint, almost invisible scorch mark on the floor, directly beneath where the stall must have stood. It was circular, about the size of a dinner plate, and the tiles within its perimeter were
slightly
discolored, as if seared by intense heat or energy. “This isn’t a structural collapse,” Quinn stated, her voice sharp. “It’s a point of origin.” Eva's green
eyes widened
behind her glasses. “A point of origin for what?” Quinn knelt, examining the scorch mark. “Whatever happened, it emanated from here. And it had nothing to do with the tunnel’s structure.” She stood and walked over to the victim again, looking at his face, then back at the scorch mark, then at the quivering needle of the Veil Compass. “He wasn’t crushed,” Quinn said, her voice dropping. “He was drained.” Eva frowned, her brow
furrowed
. “Drained? Of what?” “Energy. Life force. Something powerful enough to desiccate a human being in an instant, and leave a scorch mark in its wake.” Quinn turned to the rookie. “Secure this area. And I mean *secure* it. No one touches anything, not even a speck of dust, until I say so. Call for a full forensic team, and I want a specialized energy signature scan on this scorch mark.” The rookie looked bewildered but nodded, already pulling out his comms. Eva’s voice was softer now,
tinged
with a familiar unease. “You’re thinking what I’m thinking, aren’t you?” Quinn met her gaze. She didn’t want to think it. Not after DS Morris, three years ago, a case dismissed as ‘unexplained circumstances’ but which had festered in Quinn’s mind, leaving a wound that refused to heal. She still didn't understand what had
happened to
him, but she knew it wasn't natural. “I’m thinking,” Quinn said, her voice steady, “that whoever or whatever did this isn’t from around here. And it used this old Tube station not as a market, but as a gateway.” She looked from the scorched earth to the flickering light of the rift in the tunnel. “That 'collapse' wasn't an accident. It was the effect of something far more
sinister
opening up.” The cloying sweetness in the air now seemed less like a mystery and more like a warning. The Veil Market had attracted something that wasn't just interested in commerce. It
was interested
in power. And the young man on the platform was just the first victim. Quinn
clenched her jaw
, the worn leather
watch
digging into her left wrist. She knew this was just the beginning. And unlike the last time, she wouldn’t let this go unexplained.
created_at
"2026-02-17T02:49:39.5032+00:00"
2/17/2026, 2:49:39 AM
model
"google/gemini-2.5-flash"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
536
moderation_latency
(null)
generation_time
8937
tokens_prompt
923
tokens_completion
2055
native_tokens_prompt
883
native_tokens_completion
1755
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
0.0046524
router
(null)
provider_responses
0
status
200
is_byok
false
latency
536
endpoint_id
"16c01e26-9b91-4d22-b487-ed35634b017d"
provider_name
"Google AI Studio"
model_permaslug
"google/gemini-2.5-flash"
api_type
"completions"
id
"gen-1771296569-mIXCHftJ6RVFV6dH0ls2"
upstream_id
(null)
total_cost
0.0046524
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
77.7778%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
12
adverbTagCount
2
adverbTags
0
"Quinn said, picking up a shard of what looked like hardened moonlight [like]"
1
"the rookie offered, unnecessarily [unnecessarily]"
92.0635%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1260
totalAiIsmAdverbs
1
found
0
adverb
"slightly"
count
1
highlights
0
"slightly"
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)
52.3810%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1260
totalAiIsms
6
found
0
word
"tinged"
count
1
1
word
"quivered"
count
1
2
word
"sinister"
count
1
3
word
"furrowed"
count
1
4
word
"echoing"
count
1
5
word
"etched"
count
1
highlights
0
"tinged"
1
"quivered"
2
"sinister"
3
"furrowed"
4
"echoing"
5
"etched"
66.6667%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
2
maxInWindow
2
found
0
label
"eyes widened/narrowed"
count
1
1
label
"clenched jaw/fists"
count
1
highlights
0
"eyes widened"
1
"clenched her jaw"
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
86
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
2
hedgeCount
3
narrationSentences
86
filterMatches
0
"watch"
hedgeMatches
0
"seemed to"
1
"happened to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
0
totalSentences
104
matches
(empty)
100.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
39
mean
32.23
std
20.39
cv
0.633
sampleLengths
0
47
1
60
2
36
3
16
4
54
5
18
6
38
7
81
8
35
9
20
10
35
11
22
12
35
13
14
14
44
15
7
16
28
17
12
18
14
19
45
20
46
21
39
22
8
23
19
24
31
25
9
26
11
27
48
28
15
29
13
30
50
31
11
32
8
33
67
34
11
35
17
36
52
37
64
38
77
94.5736%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
5
totalSentences
86
matches
0
"were carved"
1
"was etched"
2
"was splintered"
3
"was desiccated"
4
"was interested"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
0
totalVerbs
152
matches
(empty)
100.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
856
adjectiveStacks
0
stackExamples
(empty)
adverbCount
34
adverbRatio
0.0397196261682243
lyAdverbCount
10
lyAdverbRatio
0.011682242990654205
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
104
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
104
mean
12.09
std
9.8
cv
0.81
sampleLengths
0
11
1
13
2
12
3
11
4
24
5
19
6
28
7
5
8
16
9
4
10
11
11
5
12
4
13
10
14
14
15
19
16
7
17
7
18
11
19
2
20
36
21
5
22
15
23
15
24
34
25
3
26
9
27
5
28
28
29
2
30
14
31
6
32
5
33
30
34
13
35
5
36
4
37
23
38
12
39
4
40
5
41
5
42
9
43
8
44
2
45
19
46
6
47
7
48
3
49
13
54.8077%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
8
diversityRatio
0.375
totalSentences
104
uniqueOpeners
39
0.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
12
fancyCount
11
fancyTags
0
"Quinn repeated, her voice flat (repeat)"
1
"Quinn said, picking up a shard of what looked like hardened moonlight (say, picking up like harden)"
2
"Eva affirmed (affirm)"
3
"the rookie offered, unnecessarily (offer)"
4
"Quinn observed, her eyes narrowing (observe, narrow)"
5
"Eva reminded her (remind)"
6
"she began, thinking aloud (begin, think)"
7
"Eva suggested (suggest)"
8
"Quinn stated, her voice sharp (state)"
9
"Quinn said, her voice dropping (say, drop)"
10
"Quinn said, her voice steady, She looked from the scorched earth to the flickering light of the rift in the tunnel (say, look)"
84.6041%