NC Bench
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Run: 2026-02-17-01KHMQJATZFQ6KG4GWX80RST0M
Run Details
Model:
Gemini 2.5 Flash
Test:
Bad Writing Habits
Scenario:
Mystery: examining a crime scene
Duration:
13.0s
Cost:
$0.005945
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 in the abandoned Tube station hung thick with the metallic tang of old iron and something else, something cloying and sweet. Detective Harlow Quinn, her salt-and-pepper hair clipped short, stepped over a fallen tile, her worn leather
watch
glinting
on her left wrist. The scene was a mess, even by the standards of the Metropolitan Police. Yellow tape crisscrossed the cavernous space, a
stark
line against the graffiti-covered walls. This wasn’t a standard crime scene. Nothing here ever was. “Quinn.” Inspector Davies, a man whose permanent scowl seemed
etched
into his face, approached, his breath pluming in the chill air. “Glad you could make it. This one’s a doozy.” Quinn nodded, her sharp jaw set. She surveyed the scene. The body, mostly obscured by a forensics tent, lay near what used to be the tracks. The platforms were wide here, wider than she remembered, almost like a forgotten
dance
hall. Dust motes
dance
d in the anemic glow of the temporary floodlights, illuminating an array of vendor stalls – or what *had* been vendor stalls – now overturned, their contents scattered. Glass vials, dried herbs, and what looked disturbing like bone fragments littered the floor. “What have we got, Davies?” Her voice cut through the murmur of the forensics team. “Jorgenson,” Davies said, consulting his notebook. “Male, mid-thirties. Stab wound to the chest. Looks like a clean kill. Our boy was dead before he hit the deck.” Quinn’s gaze swept over the platform. “Stab wound. Here?” She gestured to the surrounding chaos. This was The Veil Market, or what remained of it. It moved locations every full moon, a ghost in the city’s underbelly, dealing in things that shouldn’t exist. She knew this place. Not officially, of course. “We’re thinking a robbery gone wrong,” Davies continued, oblivious to the deeper implications. “Look at the state of these stalls. A real tussle. Jorgenson probably put up a fight.” He kicked
gently
at a shattered display case. Quinn’s brow
furrowed
. She walked towards the closest overturned stall. A fine, glittering dust coated everything, catching the light like microscopic diamonds. Not glass. Something else. She knelt, her movements precise, almost military. Empty display stands lay prostrate, their shadowy imprints hinting at their former occupants. A small brass compass, its casing showing a patina of verdigris, lay half-buried in the dust near the edge of the platform. Its face
was etched
with protective sigils, the kind of crude, ancient markings Eva Kowalski would recognize. The needle, however, was what drew her eye. It spun frantically, not settling on any direction, as if caught in a maelstrom of unseen forces. A Veil Compass. Someone had been looking for a way out. Or a way in. She picked it up, feeling the cool
weight
of the metal. “You said a robbery, Davies?” “Yeah. Clearly a struggle. Jorgenson was a known fence for… specialized goods. Probably had something someone else wanted.” Quinn turned the compass over in her palm. “And the body?” “Just there.” Davies pointed. “Forensics is finishing up. Dr.
Chen
’s nearly done. Preliminary suggests the weapon was a blade, about a six-inch length. Single, precise thrust.” A clean kill in a chaotic struggle. It didn’t sit right. Quinn’s gaze lingered on the swirling needle of the compass, then
flicked
to the body. Even from this distance, she could see something wasn't quite right with the scene. The scattered goods, the overturned tables… it all felt *staged*. Dr.
Chen
emerged from the forensics tent, pulling off her gloves. “Quinn. Davies. We’ve recovered the body. Cause of death consistent with a single stab wound to the heart. Likely instantaneous.” “Weapon?” Quinn asked. “Based on the wound, a relatively thin, sharp blade. Knife, possibly a short sword or similar. No weapon found at the scene, however.” “Which supports the robbery theory,” Davies chimed in, already looking smug. “They took the weapon with them.” Quinn ignored him, her eyes sweeping the ground around the body. Her military precision kicked in, piecing together fragments of information. “Any defensive wounds on the body, Dr.
Chen
?”
Chen
paused. “Not
precisely
. Some minor abrasions on the forearms, consistent with a fall. But no cuts or deeper wounds indicating a struggle with a knife.” “No struggle, then,” Quinn muttered, more to herself than to the others. “A single stab. No defensive wounds. But the scene… it looks like a tornado hit it.” Davies scoffed. “People can drop
quickly
, Quinn. Adrenaline, shock. Happens all the time.” “Adrenaline doesn’t overturn tables and shatter glass without causing some damage to the attacker or the victim during the process,” Quinn countered, her voice low and even. She walked towards one of the more intact vendor stalls, its frame splintered but still upright. A small pouch, made of what looked like cured leather, lay half-hidden beneath it. She nudged it with her foot. Inside, she saw a handful of bone tokens, the entry pass for this
clandestine
market. These were valuable. “If this was a robbery, Davies, why leave these?” Quinn pointed to the pouch. “And why leave all this on the ground?” She gestured to a small pile of shimmering dust that lay undisturbed next to an overturned table. Davies squinted. “Probably just missed them in the rush.” “Or they never touched them,” Quinn said. She knelt, examining the dust. It wasn't the same glittering dust that covered everything else. This was coarser, almost like finely ground sand, but it gave off a faint, internal luminescence. She remembered Eva once describing a particular kind of enchanted sand, used for tracking or warding. Her eyes drifted to the walls. The graffiti was new, layered over older tags. But a section near the far end of the platform, where a mural of a decaying industrial landscape str
etched
, had been recently obscured, partially covered by what looked like fresh paint, still faintly damp to the touch. “Dr.
Chen
,” Quinn called out. “Any estimate on time of death?” “Between 0200 and 0400 this morning,”
Chen
replied. “And when was this place discovered?” “About 0530. A local dogwalker reported some strange lights and sounds. Thought it was a rave. Called it in.” Quinn rose
slowly
, her gaze fixed on the freshly painted section of the mural. “Davies, did anyone check the back end of the platform, near that wall?” Davies frowned. “No need. The body was here. All the evidence of a struggle is right here.” He gestured widely. “Humor me,” Quinn said, her voice betraying not a hint of insubordination but an absolute certainty. With a shrug, Davies waved over a junior officer. “Go check that wall, Constable. And try not to scratch your nose against the fresh paint.” The constable, a gangly young man, ambled over. As he approached the wall, he stumbled
slightly
, catching himself against what looked like a support pillar. His hand brushed the wall. He pulled it back
sharply
. “Sir, it’s…sticky,” he reported, a slight whine in his voice. Quinn was already moving, her stride cutting across the platform. She stopped before the wall. The paint was indeed tacky. She ran a gloved finger along a thin, almost invisible line where the newer paint met the older. It was a perfect rectangle. Too perfect. “This isn’t just paint,” Quinn said, her voice tight. “This is a cover-up. And it’s covering something that was *here*.” She pressed harder along the seam. The painted surface yielded
slightly
, like a door not quite flush with its frame. “A hidden door, Quinn? Really?” Davies approached, a skeptical smirk on his face. “We’re in an abandoned Tube station, not a medieval castle.” “And outside in the real world, Inspector, people don’t stab each other in supernatural black markets beneath Camden.” Quinn’s eyes, a deep brown, met his. “This whole scene is designed to throw us off. The overturned stalls, the scattered goods… it’s misdirection.” She put her shoulder to the painted section of the wall and pushed. It gave with a faint groan, swinging inward to reveal a narrow, unlit passage behind it. A gust of stale, damp air, laced with the same sweet, cloying scent that permeated the station, wafted out. “Well, I’ll be damned,” Davies muttered, his smirk evaporating. Quinn retrieved a small penlight from her pocket and shone it into the darkness. The passage led deeper into the earth, the tunnel rough-hewn and uneven. On the floor of the passage,
glinting
in the beam of her light, was another Veil Compass. This one lay open, its needle pointing steadily inward, into the blackness. “The killer didn’t leave. They went *through*,” Quinn said, her voice barely a whisper. “Jorgenson wasn’t robbed. He was murdered to open a path.” Her mind raced. The undisturbed dust, the hidden passage, the swirling compass and then the steady one. She looked back at the body, still lying on the platform, and a chill snaked down her spine. The single, precise stab wound, the lack of defensive injuries, the staged chaos. It wasn't a robbery. It was a sacrifice. The Veil Market had a different kind of commerce, a different kind of currency. And sometimes, it was blood. “Davies, secure this passage,” Quinn ordered, her voice firm, resolute. “And get a full team down here to search this tunnel. Every inch. I want to know who was taken, and what they left behind.” Davies, uncharacteristically silent, nodded, his face pale. The reality of the scene had shifted, twisted into something far more
sinister
than a simple robbery. Quinn cast one last look at Jorgenson, his lifeless eyes staring up at the forgotten ceiling. Dead before he hit the deck, Dr.
Chen
had said. Not a fight. Just an opening. And the Veil Compass, its needle steady, confirmed it. Someone had opened a door, and Jorgenson had been the key. And the real crime scene, the real story, lay beyond that hastily painted wall, in the dark, uncharted tunnels below London.
created_at
"2026-02-17T02:41:27.992538+00:00"
2/17/2026, 2:41:27 AM
model
"google/gemini-2.5-flash"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
408
moderation_latency
(null)
generation_time
13007
tokens_prompt
923
tokens_completion
2650
native_tokens_prompt
883
native_tokens_completion
2272
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
0.0059449
router
(null)
provider_responses
0
status
200
is_byok
false
latency
408
endpoint_id
"16c01e26-9b91-4d22-b487-ed35634b017d"
provider_name
"Google AI Studio"
model_permaslug
"google/gemini-2.5-flash"
api_type
"completions"
id
"gen-1771296074-Wy5DxhLRN5W0K7O4NscQ"
upstream_id
(null)
total_cost
0.0059449
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
70.8333%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
16
adverbTagCount
3
adverbTags
0
"Davies chimed in, already looking smug [already]"
1
"Quinn muttered, more to herself than to the others [more]"
2
"Quinn said, her voice barely a whisper [barely]"
51.6031%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1653
totalAiIsmAdverbs
8
found
0
adverb
"gently"
count
1
1
adverb
"precisely"
count
1
2
adverb
"quickly"
count
1
3
adverb
"sharply"
count
1
4
adverb
"slightly"
count
2
5
adverb
"slowly"
count
1
6
adverb
"really"
count
1
highlights
0
"gently"
1
"precisely"
2
"quickly"
3
"sharply"
4
"slightly"
5
"slowly"
6
"really"
80.0000%
AI-ism character names
Target: 0 AI-default names (17 tracked, −20% each)
codexExemptions
(empty)
found
0
"Chen"
100.0000%
AI-ism location names
Target: 0 AI-default location names (33 tracked, −20% each)
codexExemptions
(empty)
found
(empty)
33.4543%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1653
totalAiIsms
11
found
0
word
"flicked"
count
1
1
word
"glinting"
count
2
2
word
"clandestine"
count
1
3
word
"sinister"
count
1
4
word
"stark"
count
1
5
word
"furrowed"
count
1
6
word
"weight"
count
1
7
word
"dance"
count
1
8
word
"etched"
count
2
highlights
0
"flicked"
1
"glinting"
2
"clandestine"
3
"sinister"
4
"stark"
5
"furrowed"
6
"weight"
7
"dance"
8
"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
123
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
1
hedgeCount
0
narrationSentences
123
filterMatches
0
"watch"
hedgeMatches
(empty)
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
0
totalSentences
145
matches
(empty)
100.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
47
mean
35.02
std
25.4
cv
0.725
sampleLengths
0
81
1
30
2
85
3
15
4
27
5
51
6
37
7
125
8
16
9
18
10
11
11
26
12
50
13
31
14
3
15
23
16
17
17
29
18
26
19
28
20
13
21
81
22
39
23
9
24
54
25
51
26
11
27
8
28
6
29
19
30
27
31
20
32
16
33
25
34
35
35
10
36
45
37
40
38
23
39
42
40
48
41
9
42
55
43
41
44
58
45
35
46
97
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
1
totalSentences
123
matches
0
"was etched"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
0
totalVerbs
188
matches
(empty)
99.8504%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
1170
adjectiveStacks
0
stackExamples
(empty)
adverbCount
47
adverbRatio
0.040170940170940174
lyAdverbCount
20
lyAdverbRatio
0.017094017094017096
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
11.35
std
6.81
cv
0.6
sampleLengths
0
23
1
22
2
13
3
13
4
6
5
4
6
21
7
9
8
6
9
4
10
16
11
15
12
30
13
14
14
15
15
6
16
21
17
6
18
9
19
10
20
18
21
4
22
4
23
13
24
24
25
3
26
7
27
12
28
2
29
2
30
7
31
13
32
22
33
17
34
8
35
17
36
3
37
8
38
4
39
11
40
5
41
18
42
8
43
3
44
4
45
22
46
7
47
4
48
15
49
14
66.2069%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
4
diversityRatio
0.41379310344827586
totalSentences
145
uniqueOpeners
60
3.1250%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
16
fancyCount
11
fancyTags
0
"Davies said, consulting his notebook (say, consult)"
1
"Davies continued, oblivious to the deeper implications (continue)"
2
"Davies chimed in, already looking smug (chime in, already look)"
3
"Quinn muttered, more to herself than to the others (mutter)"
4
"Quinn countered, her voice low and even (counter)"
5
"Quinn called out (call out)"
6
"Quinn said, her voice betraying not a hint of insubordination but an absolute certainty (say, does betray not)"
7
"he reported, a slight whine in his voice (report)"
8
"pressed (pressed)"
9
"Davies muttered, his smirk evaporating (mutter, evaporate)"
10
"Quinn ordered, her voice firm, resolute (order)"
82.6514%