NC Bench
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Run: 2026-02-17-01KHMR60Y3YMJ05BZ4AM6ZQ3FP
Run Details
Model:
Gemini 2.5 Flash
Test:
Bad Writing Habits
Scenario:
Mystery: examining a crime scene
Duration:
12.0s
Cost:
$0.006105
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 abandoned Tube station air hung thick with the metallic tang of old iron and something else, something acrid and sweet, like burnt sugar. Detective Harlow Quinn, her salt-and-pepper hair
precisely
cropped, stepped over a tangle of rusted electrical conduit, her gaze sweeping the cavernous space. Eighteen years on the force, and she’d seen her share of strange scenes, but this one… this one hummed with an unsettling kind of wrongness. The station, deep beneath the labyrinthine streets of Camden,
was supposed
to be a dead-end, a forgotten relic. Yet, here they were, a full forensic team, their lights cutting through the
oppressive
gloom. The Met had pinged her this morning: “Unusual circumstances, Detective. Your kind of case.” Her kind of case meant anything that defied easy explanation, anything with a whisper of the bizarre. “Morning, Quinn.” Eva Kowalski, her bright red curls a
stark
contrast to the grime, stood near a makeshift table where forensic techs, faces grim in their masks,
were bagging
evidence. Eva, in her round glasses and worn leather satchel, looked less like a detective and more like she belonged in the British Museum’s restricted archives, which, Quinn remembered, was exactly where she worked. Eva was a consultant on these cases now, brought in by some higher-up with an inexplicable faith in her fringe theories. Harlow didn’t trust fringe theories. She trusted evidence. “Kowalski,” Quinn acknowledged, her voice clipped. She checked the worn leather
watch
on her left wrist. “What have we got?” Eva pushed her glasses up her nose, a nervous habit that always preceded a complicated explanation. “The victim, a male, late twenties, early thirties. Discovered by a street cleaner doing an unauthorized exploration, apparently. Cause of death… well, that’s where it gets interesting.” Quinn moved closer to the body, laid out on a sterile sheet. No, not a body. What was left of one. The features were indistinct, the skin a mottled grey. It looked like he’d
been mummified
, then shattered. Splintered bone shards protruded from what should have been an arm. The air around it seemed colder, somehow, despite the heavy heat of the station. “It’s the Veil Market,” Eva said, her voice dropping to a near whisper. She tucked a curl behind her left ear. “This is one of their locations.” Quinn snorted. “The ‘Veil Market.’ Right. Another one of your fairy tales, Kowalski?” Her sharp jaw tightened. Eva’s green eyes met hers,
unwavering
. “Detective, the bone tokens we found on site, the sigils
etched
into the walls, the residual energy readings… it all points to the Market.” She gestured around the vast, circular chamber. “They move e
very
full moon. This was their last known spot.” Quinn ignored the fanciful talk of ‘energy readings’ and focused on the scene. Her military precision demanded facts. She knelt,
carefully
avoiding disturbing anything. The victim’s clothes were expensive, almost tailored. Not the kind of threads you’d expect on a ‘street cleaner’s unauthorized exploration’ in an abandoned Tube station. There was a faint, almost metallic sheen to the fabric, even under the dust. “Any ID?” Quinn asked, scanning the area around the body. “None yet,” a uniformed officer answered, looking uncomfortable. “No wallet, no phone. Like he was stripped clean before… whatever happened.” “Or he didn’t have any valuables in the first place,” Quinn mused, her eyes tracing the floor. The ground was primarily concrete, but here and there, the earth pushed through, rich and dark. Unusual for a Tube station, even an abandoned one. And then she saw it – a single, almost iridescent feather, half-buried in a patch of dirt. It
shimmered
with an unnatural luminescence. She didn’t touch it, just noted its position. “Initial findings suggest a rapid dehydration and desiccation,” Eva continued, consulting a tablet. “Consistent with extreme magical exposure, possibly a soul-siphon spell, or an encounter with a more powerful entity. Something with a high-energy drain.” Quinn straightened, her expression
unreadable
. “Magical exposure.” She let the words hang in the air, a silent challenge. “I’m seeing a body, Kowalski. A
very
dead body. And what looks like… well, a complete failure of the Met’s intelligence to monitor a supposed criminal organization in their own city.” Her voice
was laced
with a cool sarcasm that usually had her colleagues squirming. “They’re good at staying hidden, Detective,” Eva replied, remarkably unfazed. “And not just from mundane surveillance.” “Mundane,” Quinn repeated. “Right. So what, the magical police are busy?” Eva sighed, pushing her glasses up again. “Look, I know this is a lot to take in, but if we approach this without considering all the variables, we’re going to miss something crucial.” “I don’t miss crucial things, Kowalski,” Quinn said, her tone flat. “I’m looking for a perpetrator, not a phantom. And I’m looking for evidence.” She walked a slow circle around the victim, her gaze
methodical
. She saw faint scorch marks on the concrete, not from fire, but like something had vaporized there. And a pattern. A distinctive, star-like array of small, circular indentations, leading away from the body towards the far wall. They almost looked like footprints, but too symmetrical, too perfect. A sharp tang, almost ozone, pricked at her nose. She closed her eyes for a moment, processing. The air was colder here. The light dimmer. And the scorch marks… “What do you make of these?” Quinn asked, pointing a gloved finger at the star-like indentations. A forensic tech peered at them. “Not sure, Detective. Too shallow to be boot prints. Maybe some kind of ritualistic marking by the perp?” “Ritualistic?” Quinn scoffed. She knelt, running her gloved hand just above the surface. No residue. No grit. Just a faint impression. But they weren’t just impressions. They were… she felt it then, a subtle vibration in the
very
concrete beneath her. Like a whisper of residual energy, just as Kowalski had said. No, not energy. Something more structured. Harlow stood, a frown creasing her brow. She walked a few paces from the body, following the faint scorch marks and the strange indentations. They led her to an old, rusted maintenance hatch set into the curving wall of the tunnel. It
was bolted
shut, thick with decades of dust and grime. But around the hatch, the air felt even colder, and the ozone tang was stronger. “Has anyone examined this hatch?” Quinn asked, gesturing to it. “Sealed tight,” the uniformed officer said. “Looks like it hasn’t been opened in fifty years.” “Looks like,” Quinn murmured, her eyes narrowing. She traced the edge of the hatch. The dust was thick, undisturbed on the top. But along the bottom, where the hatch met the floor, there was a faint, almost invisible scuff mark. New. And right next to it, another one of the iridescent feathers. “Kowalski, come here,” Quinn commanded. Eva approached, her brow
furrowed
. “You mentioned bone tokens and sigils,” Quinn said, her voice quiet. “What else would I find at one of these… Veil Markets?” Eva hesitated. “Banned alchemical substances. Enchanted goods. Information. And sometimes, specialized tools.” She bit her lip. “Like a Veil Compass.” “A compass?” “Yes. Attuned to supernatural energy. Points toward the nearest rift or portal. Made of brass, usually, with sigils on the face.” Quinn looked at the scorch marks, the distinct, star-like indentations, the singular feather, the fresh scuff mark on an old hatch. She looked at the body, withered and broken. “This victim,” Quinn said
slowly
. “He didn’t die here.” Eva’s
eyes widened
. “What makes you say that?” “Look at the scorch marks. They don’t radiate from the body. They lead *to* it. And the footprints, if that’s what they are, are too clean. They lead *away* from the scene, too. And the hatch, Kowalski.” Quinn pointed. “It was opened. Recently. Not from the outside, but from the inside.” “But the dust—" “Undisturbed on top,” Quinn cut her off. “But the bottom, where it pivots, there’s a fresh scrape. Whoever came in through there was careful. And they were carrying something heavy enough to scuff the floor. Something that left a pattern.” Quinn turned back to the body. “This man wasn’t part of your ‘Veil Market,’ Eva. He was a trespasser. He came through the hatch, lured by something, or looking for something.” She thought of the elegant clothes, the lack of ID. Not a street cleaner. Not a casual explorer. “And he found it.” She looked at the feather, then at the pattern of scorch marks. “He was looking for something that generates extreme heat and energy. And he got too close.” Eva was silent for a moment, her analytical mind working. “A Veil Compass,” she whispered. “It would point him to a rift. A portal. And if it was a powerful one, unstable… a raw influx of energy could
cause that kind
of desiccation.” She touched a hand to her mouth. “He wasn’t a victim of the Market, Detective. He was a victim of trying to *access* the Market through a back door. And he found something far more volatile.” Quinn nodded, a grim satisfaction settling over her. The pieces
were starting
to fit, not into Eva’s tales of magic, but into a pattern of cause and effect. A man. A dangerous, hidden world. A fatal misstep. “So, who makes a compass that points to these ‘rifts’?” Quinn asked, her gaze fixed on the hatch. “And who sells it?” Eva swallowed. “A Shade artisan. At the Veil Market.” Quinn’s sharp jaw tightened. “Then we need to find this market, Kowalski. And we need to find out who sold him that compass.” Her partner, Morris, had vanished three years ago. The official report said a freak accident, but Quinn knew better. There were shadows in this city, hidden currents she didn’t understand. This victim, this desiccated shell, felt connected to those shadows, just like Morris’s disappearance. She might not believe in magic, but she believed in puzzles. And this was a puzzle she in
tended to
solve, piece by painstaking piece, until she found the truth, no matter how many 'Veil Markets' stood in her way.
created_at
"2026-02-17T02:52:12.267275+00:00"
2/17/2026, 2:52:12 AM
model
"google/gemini-2.5-flash"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
430
moderation_latency
(null)
generation_time
11966
tokens_prompt
923
tokens_completion
2725
native_tokens_prompt
883
native_tokens_completion
2336
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
0.0061049
router
(null)
provider_responses
0
status
200
is_byok
false
latency
430
endpoint_id
"16c01e26-9b91-4d22-b487-ed35634b017d"
provider_name
"Google AI Studio"
model_permaslug
"google/gemini-2.5-flash"
api_type
"completions"
id
"gen-1771296719-8EJwjvU8RxBrdHHe3SEG"
upstream_id
(null)
total_cost
0.0061049
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
98.2456%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
19
adverbTagCount
2
adverbTags
0
"Eva replied, remarkably unfazed [remarkably]"
1
"Quinn said slowly [slowly]"
70.1849%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1677
totalAiIsmAdverbs
5
found
0
adverb
"carefully"
count
1
1
adverb
"precisely"
count
1
2
adverb
"slowly"
count
1
3
adverb
"very"
count
2
highlights
0
"carefully"
1
"precisely"
2
"slowly"
3
"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)
52.2958%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1677
totalAiIsms
8
found
0
word
"shimmered"
count
1
1
word
"oppressive"
count
1
2
word
"methodical"
count
1
3
word
"unwavering"
count
1
4
word
"unreadable"
count
1
5
word
"stark"
count
1
6
word
"furrowed"
count
1
7
word
"etched"
count
1
highlights
0
"shimmered"
1
"oppressive"
2
"methodical"
3
"unwavering"
4
"unreadable"
5
"stark"
6
"furrowed"
7
"etched"
100.0000%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
1
maxInWindow
1
found
0
label
"eyes widened/narrowed"
count
1
highlights
0
"eyes widened"
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
119
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
1
hedgeCount
1
narrationSentences
119
filterMatches
0
"watch"
hedgeMatches
0
"tended to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
1
totalSentences
145
matches
0
"cause that kind"
100.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
47
mean
35.55
std
26.37
cv
0.742
sampleLengths
0
71
1
64
2
2
3
90
4
20
5
43
6
63
7
27
8
17
9
48
10
63
11
10
12
20
13
73
14
35
15
63
16
16
17
11
18
33
19
82
20
29
21
16
22
24
23
58
24
67
25
10
26
15
27
52
28
5
29
5
30
22
31
20
32
2
33
21
34
29
35
9
36
8
37
51
38
3
39
40
40
53
41
28
42
79
43
37
44
22
45
9
46
106
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
4
totalSentences
119
matches
0
"was supposed"
1
"been mummified"
2
"was laced"
3
"was bolted"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
2
totalVerbs
191
matches
0
"were bagging"
1
"were starting"
100.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
1079
adjectiveStacks
0
stackExamples
(empty)
adverbCount
38
adverbRatio
0.03521779425393883
lyAdverbCount
7
lyAdverbRatio
0.006487488415199258
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
145
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
145
mean
11.52
std
8.71
cv
0.756
sampleLengths
0
24
1
22
2
16
3
9
4
18
5
15
6
31
7
2
8
28
9
33
10
21
11
5
12
3
13
6
14
10
15
4
16
16
17
27
18
12
19
4
20
5
21
9
22
8
23
11
24
14
25
13
26
8
27
6
28
2
29
15
30
6
31
31
32
11
33
13
34
5
35
6
36
7
37
18
38
14
39
10
40
8
41
12
42
17
43
16
44
9
45
17
46
6
47
8
48
13
49
22
48.9655%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
9
diversityRatio
0.3310344827586207
totalSentences
145
uniqueOpeners
48
3.9474%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
19
fancyCount
13
fancyTags
0
"Quinn acknowledged, her voice clipped (acknowledge, clip)"
1
"Eva said, her voice dropping to a near whisper (say, drop)"
2
"a uniformed officer answered, looking uncomfortable (uniform answer, look)"
3
"Quinn mused, her eyes tracing the floor (muse, trace)"
4
"Eva continued, consulting a tablet (continue, consult)"
5
"Eva replied, remarkably unfazed (reply, remarkably unfaze)"
6
"Quinn repeated (repeat)"
7
"the uniformed officer said (uniform say)"
8
"Quinn murmured, her eyes narrowing (murmur, narrow)"
9
"Quinn commanded (command)"
10
"Quinn said slowly (say slowly)"
11
"Quinn cut her off (cut)"
12
"she whispered (whisper)"
86.6847%