NC Bench
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Run: 2026-02-17-01KHMQHKF8JQ161ZHKG9GF70DD
Run Details
Model:
Gemini 2.5 Flash
Test:
Bad Writing Habits
Scenario:
Mystery: examining a crime scene
Duration:
12.5s
Cost:
$0.006287
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 hung heavy and damp, a sickly mix of mildew and something else, something metallic and sharp. Harlow Quinn stepped through the makeshift police tape, a yellow slash against the crumbling Victorian brickwork, and into the gloom of the abandoned Tube station. The emergency lights, strung haphazardly from defunct power lines, cast long,
wavering
shadows across the tunnel. The Veil Market, some whispered. A supernatural black market supposedly. Quinn kept her face neutral. Eighteen years on the force, and she’d seen a lot of things. This, though, this ranked high on the list of ‘unusual.’ She paused, taking a slow, steady breath. Her closely cropped salt-and-pepper hair, usually neat, felt a little out of place in this subterranean chaos. Her keen brown eyes swept the scene, missing nothing. To her left, a row of stalls, now empty save for their wooden frames, str
etched
into the distance. To her right, the tracks, rusted and overgrown, disappeared into darkness. The air thrummed with the low murmur of her team, their flashlights
dancing
like fireflies in the deep. Detective Eva Kowalski, her partner for the evening, detached herself from a huddled group of uniforms and moved toward Quinn. Eva, all curly red hair and round glasses, tucked a stray curl behind her left ear. It was a nervous habit Quinn had come to recognize. “Forensics are still sweeping, Harlow,” Eva said, her voice a little tight for a seasoned detective. “But from what we’ve got, it’s a cut-and-dry case. Looks like a turf war gone south.” Quinn didn’t reply immediately. She walked past a collapsed stall, its counter scarred with what looked like ancient runes. Her worn leather
watch
, a gift from her late partner, glinted on her left wrist. She moved with a military precision that had
been honed
by years of walking into places like this. “Turf war, you say?” Quinn finally murmured, her sharp jaw set. She stopped beside a pool of dark, viscous liquid that had congealed on the grimy concrete. “And what turf would that be, Eva? Given we’re seventy feet under Camden, in a place that technically doesn’t exist.” Eva pushed her glasses up her nose. “Well, that’s the ‘unusual’ part. But the brass wants this wrapped. Rapidly. Three bodies, two combatants dead, one civvie caught in the crossfire. Typical gangland execution,
really
.” Quinn knelt, ignoring the damp chill seeping into her trousers. She ran a gloved finger along the edge of the dried pool. It wasn’t blood, not exactly. It was darker, thicker, and had a strange, almost oily sheen. “Typical gangland execution, Eva, tends to leave typical gangland blood.” Eva gestured to a huddle of crime scene investigators further down the tunnel. “They’re saying it’s a rare type of… synthetic blood. Imported. Apparently, some of these underground groups use it to throw off forensic analysis.” Quinn rose, her gaze still fixed on the stain. “Synthetic blood? In an abandoned Tube station operating as a black market for… what exactly, Eva? Used chewing gum?” Eva sighed, a tiny burst of frustration. “Harlow, I know you’re thorough. But we’ve got clear signs of a struggle. Ballistics recovered a .38 slug from the far wall. And the victims… well, they’re not exactly upstanding citizens. Two known enforcers for the ‘Shadow Syndicate,’ a group we’ve been tracking for months. And the third… a young woman, no ID, but suspected of being a runner for them.” Quinn walked over to the spot where Eva indicated the bodies had
been found
. Forensics had already marked out the positions with chalk outlines. She looked at the smudges on the grimy floor where the bodies had lain, then at the scarred wall. A .38 slug. She’d seen enough of those to know the damage they caused. But something felt off. The chalk outlines showed two bodies relatively close, one further away. And the blood… if it was synthetic, why was there so little? And why the odd metallic smell? “Where’s the shell casing for the .38?” Quinn asked, her eyes scanning the floor. Eva checked her tablet. “CSI log says it wasn’t recovered. High-velocity projectile, likely bounced or was kicked away in the struggle. It happens.” “It happens,” Quinn repeated, her voice flat. “But what about the other combatant? If it was a turf war, there’d be two sets of weapons. Who shot the .38, and who shot them?” “The theory,” Eva explained, “
is that the
two enforcers engaged, one was killed by the other, and the survivor was then taken out by the third party, the unID’d female, who then fled.” Quinn raised an eyebrow. “A runner, armed and capable of taking out a seasoned enforcer? That’s a bold theory, Eva. Especially given the lack of a second weapon, or any indication of where this runner might have gotten one.” “She could have picked up the other enforcer’s weapon,” Eva offered, though she sounded less convinced herself. Quinn shook her head
slowly
. “No. Look at this.” She pointed to a set of barely visible scuff marks near one of the chalk outlines. “These are drag marks. Not a chaotic struggle. Someone was dragged here.” She followed the faint marks, which led back toward a dark alcove. “And where’s the entry point for the supposed .38 round?” Eva consulted her tablet again. “Entry point is believed to be the victim’s chest, exiting the back and hitting the wall.” Quinn knelt again, examining the wall. There was a small, clean hole, the plaster spalled around it. She reached out, touching the rough edge. “This isn’t a .38 exit wound, Eva. Not typically. The damage… it’s too precise. Too small. A .38 would have made a messier exit.” She stood, her gaze sweeping her surroundings. “And if a .38 was fired, there would be powder residue. Have forensics found any?” Eva looked genuinely perplexed. “They’re still processing, Harlow. But no, nothing reported yet.” Quinn walked into the alcove. It was even darker here, the emergency lights barely reaching. She pulled out a small, powerful flashlight from her belt and swept it across the walls, the floor. Cobwebs, dust, and then… something glinted. She knelt, brushing away a layer of grime. Imprinted in the dust was the faint outline of a small, brass compass. Its casing had a patina of verdigris, and the face
was etched
with protective sigils. A Veil Compass. She recognized the description from the whispers, from the odd, hushed reports that cropped up in the more esoteric corners of police intelligence. A shadow compass, some called it, supposedly pointing to supernatural rifts. She straightened, holding up a small evidence bag with the compass inside. “And what about this, Eva? Does this fit into your ‘turf war’ scenario?” Eva’s green
eyes widened
slightly
behind her glasses. “A compass? What about it?” “This isn’t just any compass, Eva,” Quinn said, her voice low, almost a whisper. “This is a Veil Compass. Used to
navigate
the, shall we say, less conventional aspects of this market. And for a ‘turf war,’ it’s an odd thing to drop.” Quinn walked back to where the bodies had been. She looked at the chalk outlines. The drag marks. The almost-clean exit wound in the wall. The lack of a second weapon. The peculiar blood. The compass. She closed her eyes for a brief moment, sifting through the details, putting the pieces together. Morris’s face flashed in her mind, a ghost of a reminder that sometimes, the world wasn’t as simple as it seemed. Sometimes, the unexplained *was* the explanation. She opened her eyes, a new light in them. “It wasn’t a turf war, Eva. And the .38 wasn’t fired here.” Eva stared at her, her brows
furrowed
. “But the slug…” “The slug was planted,” Quinn said, walking to the wall and tapping her finger just above the tiny hole. “Look at the spalling. It’s outward. Meaning the projectile didn’t
enter *that* hole
. It exited it. From the other side.” Eva leaned closer, then looked doubtful. “But… that’s a solid wall, Harlow.” Quinn pointed her flashlight beam into the dark alcove where she’d found the compass. “Not entirely. This tunnel system is riddled with old maintenance shafts, forgotten passages. What if the shot came from *there*?” She swept the light along the alcove wall. “And what if the ‘synthetic blood’ isn’t synthetic at all? What if it’s what happens to certain… entities… when they bleed? And why were these two ‘enforcers’ here? Chasing someone? And where’s the third victim if she fled?” “She didn’t flee, Eva,” Quinn stated, her voice firm. “She was the target. Or at least, the one who was here first.” Quinn walked over to the chalk outline of the “civvie.” She knelt again, her eyes sharp. She saw something the others had missed: a faint, almost invisible outline on the floor within the chalk-drawn figure. A slight impression, as if something had been set down, and then
quickly
removed. It was too regular to be an accident. “Someone was standing here,” Quinn murmured, more to herself than to Eva. “Waiting. And they were holding something. Something small and round. Like… like a satchel.” She remembered the reports about Eva’s friend, Aurora, a young woman known to frequent the market. And Aurora’s friend, Eva Kowalski, with her worn leather satchel, overflowing with books. Eva, with her knowledge of ancient history and the occult. Quinn looked up at Eva, whose freckled complexion now seemed a little paler. “Eva,” Quinn said, her voice quieter now, almost gentle. “Do you know what a bone token is?” Eva swallowed. She tucked a curl behind her left ear. “Harlow, what are you implying?” “I’m implying,” Quinn said, standing and holding the Veil Compass in her gloved hand, “that a lot of things don’t add up here. Those two ‘enforcers’ weren’t the hunters. They were the hunted. And whoever was here, they weren’t running a black market. They were looking for something. Or someone. And I think they found them.” Quinn’s gaze hardened. She looked at the chalk outline of the third victim, the "runner." No ID. But the impression on the floor... She looked at Eva, her green eyes wide and nervous. “And I think,” Quinn continued, her voice losing its gentle edge, “that you know a lot more about what happened here than you’re letting on, Detective Kowalski.”
created_at
"2026-02-17T02:41:03.65021+00:00"
2/17/2026, 2:41:03 AM
model
"google/gemini-2.5-flash"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
456
moderation_latency
(null)
generation_time
12472
tokens_prompt
923
tokens_completion
2732
native_tokens_prompt
883
native_tokens_completion
2409
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
0.0062874
router
(null)
provider_responses
0
status
200
is_byok
false
latency
456
endpoint_id
"16c01e26-9b91-4d22-b487-ed35634b017d"
provider_name
"Google AI Studio"
model_permaslug
"google/gemini-2.5-flash"
api_type
"completions"
id
"gen-1771296050-plxzxZ5asxsFmVoPv8Pa"
upstream_id
(null)
total_cost
0.0062874
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
0.0000%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
12
adverbTagCount
5
adverbTags
0
"Eva said, her voice a little tight for a seasoned detective [little]"
1
"Quinn said, her voice low, almost a whisper [almost]"
2
"Quinn said, walking to the wall and tapping her finger just above the tiny hole [just]"
3
"Quinn murmured, more to herself than to Eva [more]"
4
"Quinn said, her voice quieter now, almost gentle [almost]"
76.8116%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1725
totalAiIsmAdverbs
4
found
0
adverb
"quickly"
count
1
1
adverb
"slightly"
count
1
2
adverb
"slowly"
count
1
3
adverb
"really"
count
1
highlights
0
"quickly"
1
"slightly"
2
"slowly"
3
"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)
71.0145%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1725
totalAiIsms
5
found
0
word
"wavering"
count
1
1
word
"furrowed"
count
1
2
word
"dancing"
count
1
3
word
"etched"
count
1
4
word
"navigate"
count
1
highlights
0
"wavering"
1
"furrowed"
2
"dancing"
3
"etched"
4
"navigate"
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
106
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
1
hedgeCount
0
narrationSentences
106
filterMatches
0
"watch"
hedgeMatches
(empty)
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
2
totalSentences
131
matches
0
"is that the"
1
"enter *that* hole"
100.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
40
mean
42.95
std
25.46
cv
0.593
sampleLengths
0
96
1
80
2
46
3
32
4
52
5
47
6
34
7
48
8
36
9
28
10
68
11
90
12
14
13
23
14
33
15
33
16
39
17
17
18
59
19
21
20
70
21
13
22
112
23
25
24
13
25
43
26
79
27
21
28
10
29
39
30
12
31
80
32
22
33
57
34
65
35
30
36
15
37
56
38
33
39
27
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
3
totalSentences
106
matches
0
"been honed"
1
"been found"
2
"was etched"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
0
totalVerbs
170
matches
(empty)
94.0887%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
1048
adjectiveStacks
0
stackExamples
(empty)
adverbCount
49
adverbRatio
0.046755725190839696
lyAdverbCount
19
lyAdverbRatio
0.01812977099236641
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
131
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
131
mean
13.11
std
9.41
cv
0.718
sampleLengths
0
18
1
25
2
16
3
5
4
5
5
5
6
12
7
10
8
7
9
17
10
9
11
18
12
11
13
18
14
20
15
16
16
10
17
16
18
16
19
4
20
15
21
15
22
18
23
11
24
16
25
20
26
7
27
27
28
10
29
12
30
5
31
11
32
10
33
13
34
23
35
9
36
19
37
7
38
61
39
14
40
10
41
19
42
3
43
11
44
4
45
11
46
3
47
9
48
6
49
14
42.3664%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
10
diversityRatio
0.29770992366412213
totalSentences
131
uniqueOpeners
39
0.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
12
fancyCount
9
fancyTags
0
"Eva said, her voice a little tight for a seasoned detective (say, voice)"
1
"Quinn repeated, her voice flat (repeat)"
2
"Eva explained (explain)"
3
"Eva offered, though she sounded less convinced herself (offer, sound convince)"
4
"Quinn said, walking to the wall and tapping her finger just above the tiny hole (say, walk tap)"
5
"Quinn stated, her voice firm (state)"
6
"Quinn murmured, more to herself than to Eva (murmur)"
7
"Quinn said, standing and holding the Veil Compass in her gloved hand (say, stand hold)"
8
"Quinn continued, her voice losing its gentle edge (continue, lose)"
81.4283%