NC Bench
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Run: 2026-02-17-01KHMQR83Y0SR41DCJ907NF2B4
Run Details
Model:
Gemini 3 Flash (Preview)
Test:
Bad Writing Habits
Scenario:
Thriller: chase through city streets
Duration:
17.8s
Cost:
$0.006927
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="4417" name="Tomás Herrera" aliases="Tommy, Tomás, Herrera" pronouns="he/him" species="Human" storyRole="Support"> <eyeColor>warm brown</eyeColor> <hair>short curly dark brown</hair> <height>5'10"</height> <age>29</age> <skinTone>olive skin</skinTone> <scar>scar running along his left forearm from a knife attack</scar> <medallion>Saint Christopher medallion around his neck</medallion> <birthplace>Seville, Spain</birthplace> <description>A former paramedic who provides off-the-books medical care for the clique.</description> <backstory>Born in Seville, Spain. He moved to London to work for the NHS but lost his license after administering unauthorized treatments to supernatural patients.</backstory> </character> <location id="854" name="The Raven's Nest" aliases="the Nest, Raven, Silas' bar" realm="Earth"> <signColor>distinctive green neon sign above the entrance</signColor> <secretRoom>hidden back room accessible through a bookshelf, used for clandestine meetings</secretRoom> <description>A dimly lit bar in Soho, London. The walls are covered with old maps and black-and-white photographs.</description> </location> <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> </codex> Write a fully fleshed out scene of at least 1000 words in the thriller genre. A detective is pursuing a suspect through rain-soaked city streets at night. The chase takes them from the street level down into an underground market. The detective must decide whether to follow the suspect into unfamiliar and potentially dangerous territory. 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 rain in Soho didn't fall so much as it dissolved, coating the brickwork and the pavement in a slick, oily sheen that caught the garish glow of the city’s neon. Detective Harlow Quinn adjusted the collar of her wax-canvas coat, her eyes fixed on the man slipping through the crowd forty yards ahead. He moved with a nervous, twitching energy, his shoulders hunched as if he expected a blow from the sky. Tomás Herrera. Quinn knew the file by heart. Former paramedic, Seville-born, NHS wash-out with a penchant for treating people who didn’t officially exist. She
flicked
her gaze to the worn leather
watch
on her left wrist. 11:14 PM. She had been trailing him since he’d emerged from The Raven’s Nest, that cramped hole-in-the-wall where the light from the green neon sign turned e
very
patron into a ghoul. Tomás took a hard right, his boots splashing into a deep puddle. Quinn didn’t speed up. She maintained her pace, a rhythmic, military stride that ate up the distance without drawing eyes. She was forty-one, with eighteen years of Metropolitan service
etched
into the lines around her eyes and the set of her sharp jaw, and she
knew that a
chase was often won in the pauses, not the sprints. "Control, I'm following the subject southbound toward the Camden borders," she murmured into the collar-mic hidden beneath her coat. Static was her only answer. The city felt dense tonight, the air thick with more than just humidity. It felt heavy, like the atmosphere before a massive electrical storm. She
remembered that feeling
. She’d felt it three years ago, on the night DS Morris had vanished into a warehouse fire that left no ashes. They had found his badge and his gun, but Morris—solid, dependable Morris—had simply
been deleted
from the world. The department called it an unexplained casualty. Quinn called it a lie. Tomás glanced over his shoulder. The warm brown of his eyes flashed in the dark, wide with a frantic sort of terror. He saw her. The chase shifted from a stalk to a sprint. Tomás bolted, weaving through a group of tourists with a dexterity that spoke of a man used to running. Quinn didn't shout. Shouting was for rookies who thought authority came from the throat. She simply ran. Her boots hammered the pavement, her breathing controlled and shallow. He lunged toward a construction hoarding, slipping through a gap in the plywood. Quinn followed, her shoulder catching the rough wood as she squeezed through. They were behind the main thoroughfare now, in the shadow-drenched guts of a redevelopment site. Ahead, Tomás was a dark silhouette silhouetted against a rusted iron gate. He didn’t climb it; he dived beneath it, disappearing into a stairwell that shouldn't have been there. Quinn reached the gate and skidded to a halt. The stairs led down into the throat of an abandoned Tube station. A cold, metallic draft wafted up from the depths, carrying the scent of ozone, rot, and something sickly sweet, like burnt sugar and old copper. She reached into her inner pocket and drew her service pistol, checked the slide, and held it in a low ready position. She looked at the yawning black mouth of the tunnel. Her instincts—the ones that had kept her alive for nearly two decades—screamed at her to wait for backup. But backup wouldn't come here. Not to the places Tomás Herrera frequented. She stepped onto the first stair. The concrete was cracked and slick with a slime that looked purple under her tactical torch. As she descended, the sounds of London—the sirens, the tires on wet asphalt, the distant thrum of the city—faded into a pressurized silence. At the bottom of the flight, a heavy steel door stood ajar. A man sat on a crate beside it, his face obscured by a hood. He didn't look like a vagrant. He looked like a gargoyle carved from shadow. As Quinn approached, he held out a withered hand, palm up. "Bone," he croaked. Quinn didn't lower her weapon. "Police. Move aside." The man didn't flinch. He gestured toward a small wooden bowl on the floor. It
was filled
with jagged, white fragments that looked uncomfortably like human knuckles. Quinn reached into her pocket. She didn't have a bone token, but she had the silver whistle Morris had carried—a lucky charm she’d pulled from the ruins of the warehouse three years ago. She didn't know why, but she threw it into the bowl. The whistle hit the wood with a dull thud. The hooded man nodded and kicked the door wider. Quinn stepped through and felt the world tilt. She
was standing
on a gantry overlooking the tracks of a station that appeared on no modern map. This was the Veil Market. Below her, the platform was a riot of motion and impossible colors. Stallholders shouted in languages that sounded like clicking stones and rushing water.
The air was thick with
the smoke of incense that burned blue and orange. She saw things that defied the neat, clinical reports she filed at the station. Glass jars filled with shimmering, liquid light; racks of
silk
that
seemed to
move of their own volition; bundles of herbs that bled when cut. And there, weaving through the throng of buyers and sellers, was Tomás. He moved toward a stall near the far end of the platform, his left hand clutching his forearm. Quinn saw the flash of the Saint Christopher medallion around his neck as it swung out from his shirt. He looked small here, diminished by the madness of the market. He stopped at a counter draped in black
velvet
and began speaking to a figure hidden behind a screen of hanging beads. Quinn moved down the gantry stairs, her heart hammering against her ribs. She was a woman of logic, of evidence, of the
tangible
. This place was a physical assault on her reality. She passed a woman selling shadows trapped in jars and didn't look back. Her eyes remained locked on the back of Herrera's head. She reached the floor of the platform, her hand tight on her holster. The crowd didn't part for her; they ignored her, a sea of overcoats, cloaks, and things wearing human skin. She shoved past a man whose eyes were entirely golden and reached for Tomás’s shoulder. "Herrera! Hands where I can see them!" Tomás spun around, his face pale, sweat silvering his forehead. He gasped, his back hitting the
velvet
-covered stall. "Detective. You shouldn't be here. You don't have the blood for this." "I don't give a damn about blood," Quinn snapped, stepping into his space, her jaw set like granite. "I want names. I want to know who you were treating in Mayfair. I want to know how a man burns to nothing in a cold warehouse." Tomás looked at her with genuine pity. He reached out, not to strike, but as if to comfort her. Quinn caught his wrist—the one with the long scar running up the forearm from a knife attack she knew had occurred in a back alley two years ago. "The world isn't what you think it is, Harlow," Tomás whispered. "Morris found that out. He didn't die. He was traded." The name hit her like a physical blow. The noise of the market
seemed to
roar in her ears—the chanting, the haggling, the strange, rhythmic thrumming of the heartbeat of the earth. "Traded to who?" she demanded, her voice cracking. Tomás looked past her, his eyes widening. "We have to go. Now. The wardens... they don't like tourists." From the shadows of the tunnel, three figures emerged. They wore long, grey coats that
seemed to
absorb the light, and their faces
were obscured
by
porcelain
masks with no eye slits. They moved with a synchronized, mechanical grace that made Quinn’s skin crawl. She looked at Tomás, then at the masked figures, then back at the stairs she’d descended. The logic of the precinct told her to arrest the man and find a way out. The instinct of the hunter told her that if she stayed, she’d become another missing badge in a folder. "Run," Tomás said, his voice urgent. He shoved a small, heavy
velvet
pouch into her hand. "Go back to the Nest. Look for the maps. Use the maps, Quinn." He didn't wait for an answer. He dived into the crowd, disappearing behind a display of antique mirrors that reflected a dozen different versions of the station. Quinn stood for a split second, the cold
weight
of the pouch in her palm. The grey-clad figures
were closing
in, their movements silent and relentless. She looked at the bone-white masks and saw her own reflection in the
porcelain
—frightened, determined, and
suddenly
very
small. She turned and ran. Not away from the truth, but back toward the only world she knew, clutching a piece of the darkness in her hand. As she scrambled back up the concrete stairs, the green neon of Soho felt like a dream she
was trying
to wake up from, while the cold rot of the Veil Market stayed lodged in her lungs. She reached the surface, the rain hitting her face like a benediction. She didn't stop until she reached the corner of the street, ducking into the recessed doorway of a closed tailor shop. Her breath came in ragged gasps. She opened her hand. In the center of her palm lay a small, tarnished brass key and a single, human tooth. Harlow Quinn looked out at the rain-soaked streets of London. The city looked the same—the buses hummed, the tourists laughed, the lights
flickered
. But the skin had
been peeled
back. She could see the veins now, and she knew she’d never be able to look at the world the same way again. She tucked the key and the tooth into her pocket, adjusted her coat, and began the long walk back to the station. The hunt wasn't over. It had just changed shape.
created_at
"2026-02-17T02:44:46.622777+00:00"
2/17/2026, 2:44:46 AM
model
"google/gemini-3-flash-preview-20251217"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
765
moderation_latency
(null)
generation_time
17723
tokens_prompt
914
tokens_completion
2462
native_tokens_prompt
852
native_tokens_completion
2167
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
0.006927
router
(null)
provider_responses
0
status
200
is_byok
false
latency
764
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-1771296268-kVWthdX81DzK3jLQYXE6"
upstream_id
(null)
total_cost
0.006927
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
6
adverbTagCount
0
adverbTags
(empty)
88.1797%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1692
totalAiIsmAdverbs
2
found
0
adverb
"suddenly"
count
1
1
adverb
"very"
count
1
highlights
0
"suddenly"
1
"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)
34.9882%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1692
totalAiIsms
11
found
0
word
"tangible"
count
1
1
word
"flickered"
count
1
2
word
"flicked"
count
1
3
word
"porcelain"
count
2
4
word
"velvet"
count
3
5
word
"silk"
count
1
6
word
"weight"
count
1
7
word
"etched"
count
1
highlights
0
"tangible"
1
"flickered"
2
"flicked"
3
"porcelain"
4
"velvet"
5
"silk"
6
"weight"
7
"etched"
100.0000%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
1
maxInWindow
1
found
0
label
"air was thick with"
count
1
highlights
0
"The air was thick with"
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
122
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
1
hedgeCount
3
narrationSentences
122
filterMatches
0
"watch"
hedgeMatches
0
"seemed to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
2
totalSentences
129
matches
0
"knew that a"
1
"remembered that feeling"
95.8209%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
40
mean
41.7
std
20.24
cv
0.485
sampleLengths
0
73
1
67
2
70
3
48
4
55
5
25
6
55
7
69
8
46
9
62
10
45
11
51
12
3
13
8
14
71
15
18
16
8
17
61
18
51
19
70
20
55
21
47
22
7
23
30
24
45
25
47
26
21
27
32
28
8
29
18
30
44
31
51
32
29
33
27
34
45
35
63
36
43
37
17
38
52
39
31
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
4
totalSentences
122
matches
0
"been deleted"
1
"was filled"
2
"were obscured"
3
"been peeled"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
3
totalVerbs
261
matches
0
"was standing"
1
"were closing"
2
"was trying"
100.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
1578
adjectiveStacks
0
stackExamples
(empty)
adverbCount
27
adverbRatio
0.017110266159695818
lyAdverbCount
11
lyAdverbRatio
0.00697084917617237
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
129
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
129
mean
12.93
std
7.26
cv
0.562
sampleLengths
0
31
1
23
2
19
3
2
4
6
5
15
6
13
7
2
8
29
9
12
10
4
11
16
12
38
13
19
14
5
15
13
16
11
17
4
18
21
19
18
20
7
21
5
22
5
23
17
24
3
25
9
26
19
27
3
28
11
29
3
30
10
31
13
32
12
33
15
34
12
35
17
36
9
37
12
38
25
39
22
40
10
41
18
42
5
43
7
44
6
45
16
46
23
47
12
48
14
49
6
38.3721%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
15
diversityRatio
0.2868217054263566
totalSentences
129
uniqueOpeners
37
0.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
6
fancyCount
5
fancyTags
0
"she murmured into the collar-mic hidden beneath her coat (murmur hide)"
1
"he croaked (croak)"
2
"Quinn snapped, stepping into his space, her jaw set like granite (snap, step)"
3
"Tomás whispered (whisper)"
4
"demanded (demand)"
85.7271%