NC Bench
Overview
About
Tests
Models
Vendors
Run: 2026-02-17-01KHMEV45N9M2WVZ6P2CKQDGMX
Run Details
Model:
Stealth: Aurora Alpha
Test:
Bad Writing Habits
Scenario:
Thriller: chase through city streets
Duration:
25.5s
Cost:
$0.000000
Provider:
Stealth
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
Rain hammered the cobblestones of Soho with a relentless, metallic rhythm, turning the streetlights into smeared halos of amber. Harlow Quinn pulled her coat tighter around her shoulders, the worn leather
watch
on her left wrist clicking
softly
with each pulse of her heart. The
watch
’s face
was scarred
by years of use, the minute hand trembling only when she let her thoughts drift to the night three years ago when DS Morris vanished in a flash of static and a scream that never reached her ears. She moved through the rain‑slick alleys with the precision of a soldier, each
footfall
measured, each breath controlled. The neon green sign above the Raven’s Nest
flickered
like a wounded insect, casting an eerie glow on the puddles below. The bar’s windows
were fogged
, the silhouettes of patrons inside indistinct, but the faint thrum of a piano drifted out, muffled by the storm. The suspect— a wiry figure in a dark coat—slipped through the doorway just as the doorbell chimed. Quinn’s
eyes narrowed
, the brown irises catching the flash of the neon as she followed. She slipped inside, the door closing behind her with a soft thud that
seemed to
seal the world outside. The interior was a dim
sanctuary
of old maps and black‑and‑white photographs, the walls a collage of forgotten voyages and faces. The air smelled of stale whiskey and damp wood. “Quinn,” a voice whispered from the far corner, low and urgent. It was Tomás Herrera, his face half‑lit by a single hanging bulb. He wore his Saint Christopher medallion around his neck, the small silver figure
glinting
faintly. The scar on his left forearm was a pale line, a memory of a knife attack that never healed fully. He was the unofficial medic for the clique, the one who stitched wounds that ordinary doctors refused to see. “Tommy,” she replied, voice
barely above a whisper
. “I need a line on the courier. He’s heading to the back room.” Tomás glanced toward the bookshelf that lined the far wall, its spines a jumble of travelogues and occult manuals. “The back room’s a dead end,” he said, eyes flicking to the rain‑streaked window. “If he’s going underground, you’ll need a token. The Veil Market doesn’t let anyone in without one.” Quinn’s jaw tightened. The Veil Market was a rumor among the precinct’s night shift—an underground bazaar that appeared in abandoned tube stations, moving locations with each full moon. It was a place where the supernatural
was bought
and sold, where alchemical substances changed hands under the
flicker
of oil lamps. She had never set foot there, but the loss of Morris had taught her that the city’s shadows held more than just ordinary crime. She slipped past the bar’s patrons, the rain’s patter muffled by the thick wooden door that led to the hallway. The suspect moved ahead, his coat flapping like a dark flag in the wind. Quinn’s senses sharpened; the leather
watch
on her wrist ticked louder, each second a reminder that time was a luxury she could not afford. The hallway opened onto a narrow stairwell, the steps slick with rain that had seeped in through a cracked window above. The suspect descended without hesitation, his boots
echo
ing in the hollow space. Quinn followed, her boots making a soft thud against the concrete, her breath forming clouds that vanished as
quickly
as they appeared. At the bottom of the stairs, a rusted metal door stood ajar, a faint glow emanating from within. The scent of damp earth mingled with something metallic, a tang that made the back of her throat tighten. She pushed the door open, the hinges whining in protest, and stepped into a tunnel that
seemed to
swallow the rain’s
echo
. The tunnel led to a disused underground station, its tiled walls cracked and overgrown with moss. The faint hum of distant trains
was replaced
by a low, throbbing pulse that
seemed to
sync with her own heartbeat. In the dim light, a figure crouched near a stone pedestal, a small bone token clutched in his hand. The token was a polished femur, its surface
etched
with runes that glowed faintly in the darkness. Quinn’s eyes locked onto the token. She knew the significance without needing an explanation—only those who dealt in the Veil Market could afford such an artifact. The suspect slipped the token into his coat pocket and vanished into a side passage, his silhouette swallowed by the darkness. She hesitated. The underground market was a place of whispered legends, a realm where the line between the natural and the supernatural blurred. Her training had taught her to trust the evidence, to follow the trail of facts. Yet the loss of Morris had taught her that some truths lay beyond the reach of ordinary police work. The rain above was a distant roar now, the city’s neon signs a memory behind the thick concrete. “Quinn?” Tomás’s voice crackled through the secure line she kept in her pocket. “You’re deep. The Veil Market isn’t a place for a cop. You could get... entangled.” She pressed the receiver to her ear, the rain’s rhythm still audible in the background. “I need to know what he’s after,” she said, voice steady despite the tremor she felt in her hands. “If he’s moving contraband, I need to stop it before it reaches the surface.” Tomás sighed, the sound carrying a
weight
of experience. “There are things down there that can’t be explained by a badge and a gun. You’ll be stepping into a world where the rules are different. The bone token is a key, but it’s also a warning. Once you
cross that threshold
, you can’t turn back.” Quinn’s mind flashed to the night Morris disappeared. The case had been a tangled web of occult symbols, a whisper of a cult that worshipped something that lived beneath the city. She had chased rumors, chased shadows, and in the end, she’d
been left
with an empty file and a scar on her soul. The thought of finding answers burned in her chest like a low ember. She tightened her grip on the leather
watch
, feeling the worn strap dig into her wrist. The
watch
’s ticking seemed louder now, each beat a reminder that she was still alive, still capable of making a difference. She glanced back at the tunnel entrance, the rain’s
echo
still faintly audible, a reminder of the world above. The passage ahead
was lit
by
flicker
ing lanterns, their flames
dancing
in a rhythm that seemed almost alive. Shadows moved along the walls, shapes that could be either people or something else. The air grew colder, and a faint scent of incense mingled with the metallic tang of blood. Quinn stepped forward, her boots making a soft thud on the stone floor. The tunnel opened into a cavernous chamber, the ceiling disappearing into darkness. In the center of the room stood a market of stalls, each draped with tattered fabrics and illuminated by lanterns that cast a golden glow on the faces of the patrons. The patrons were a mixture of humans and things that defied easy description—figures with elongated limbs, eyes that glowed like embers, and others whose skin
seemed to
shift like oil on water. They moved with a purpose that was both familiar and alien, their conversations a low murmur of languages that slipped through Quinn’s mind like water through a sieve. At the far end of the market, a table was set with an array of items: vials of liquid that
shimmered
with an inner light, a bundle of dried herbs that emitted a faint, sweet perfume, and a small, intricately carved wooden box that
seemed to
pulse with a heartbeat of its own. The suspect stood beside the table, his coat now open, revealing a scar that ran along his forearm—a mirror of Tomás’s own wound. Quinn’s
eyes narrowed
. She moved closer, the crowd parting as if recognizing the tension in her stride. The suspect turned, his face a mask of calm, his eyes reflecting the lantern light with a strange, almost predatory gleam. “Detective Quinn,” he said, his voice smooth, “I’ve been expecting you.” She felt a chill crawl up her spine, but her jaw stayed sharp, her mind focused. “You’re moving contraband, and I’m here to stop it.” He smiled, a thin, knowing curve. “You think you can stop something that lives in the veins of this city? The Veil Market isn’t a place for law. It’s a place where the law itself is bought and sold.” Quinn’s hand brushed the worn leather
watch
, feeling the cool metal of the case. “Morris died because you thought you could hide in the dark. I’m not going to
let that happen
again.” The suspect’s eyes
flicked
to the bone token now visible on his coat pocket. “You want this token? It’s a key, but it’s also a promise. You can either take it and become part of this world, or you can walk away and let the darkness keep its secrets.” Tomás’s voice crackled again, urgent. “Quinn, you have to—” She cut him off with a sharp motion, her hand moving to the pocket where she kept a small, folded piece of paper—an old police report on the Veil Market, a file she had compiled in secret. The paper was a reminder that she was still a detective, still bound by duty, even here. She reached for the token, her fingers brushing the bone’s smooth surface. The runes glowed brighter, as if responding to her touch. A surge of cold shot through her, a flash of images—shadows of a child, a whisper of a chant, a feeling of
being watched
by unseen eyes. The suspect’s smile faded, replaced by a
flicker
of something like fear. “You don’t understand what you’re doing.” Quinn’s eyes hardened. “I understand enough. I understand that people die because of people like you. I understand that I have a choice.” She lifted the token, feeling its
weight
, its power. The market
seemed to
hold its breath, the lanterns dimming for a heartbeat. The rain above was a distant roar, but in this underground world, the sound of a single drop falling from a lantern’s wick seemed louder than any thunder. She turned, the token clenched in her fist, and walked toward the exit. The suspect shouted something, but the words
were lost
in the
cacophony
of the market. Tomás’s voice, faint but clear,
echo
ed in her ear, “You’re making a mistake, Quinn.” She didn’t answer. She pushed through the crowd, the stone floor beneath her feet steady, the rain’s
echo
fading as she ascended the stairs that led back to the surface. The neon green sign of The Raven’s Nest glowed through the tunnel’s mouth, a
beacon
of the world she had left behind. When she emerged onto the rain‑slick street, the storm had intensified, the wind whipping the neon sign into a
flicker
ing
beacon
. The city’s lights reflected off the puddles, turning the street into a river of color. She stood there, breathless, the token in her hand, the
weight
of the decision pressing against her ribs. The rain fell harder, each drop a reminder that the city never slept, never stopped moving. The sound of distant sirens rose, a chorus that
seemed to
echo
her own heartbeat. She glanced at her
watch
, the worn leather strap creaking as she tightened it around her wrist. The minute hand moved, each tick a promise that she would not let the darkness claim another life. She turned toward the Raven’s Nest, the green neon sign now a steady glow against the storm. The bar’s door was ajar, the warm light inside spilling onto the street. She could hear the muffled piano and the murmur of patrons, a world of ordinary crimes and ordinary lives. She paused, the token
glinting
in the rain’s reflection, and thought of DS Morris, of the night he vanished, of the promise she had made to herself. She could walk away, let the Veil Market remain a secret, protect herself from the unknown. Or she could step back into the darkness, follow the trail, and confront the forces that had taken her partner. The rain hammered her coat, the wind tugged at her hair, and the city’s pulse beat beneath her boots. She inhaled the cold, wet air, feeling the
weight
of the token and the
weight
of her choice. The night was still young, the chase unfinished, and the streets of London str
etched
out before her like a labyrinth of possibilities. She stepped back into the bar, the neon green sign humming above her, the rain a steady drum against the windows. The suspect’s silhouette
was gone
, the underground market a memory that lingered in the back of her mind. She placed the token on the bar’s worn wooden counter, its runes catching the dim light, and
watch
ed as Tomás emerged from the shadows, his Saint Christopher medallion
glinting
. “Did you get it?” he asked, voice low, eyes scanning the room. Quinn nodded, the sharp jaw set, the brown eyes
steeled
. “I have it. And I’m not leaving it here.” Tomás’s scarred forearm flexed, a silent acknowledgment of the danger they both faced. “Then we have to decide what to do with it. The Veil Market isn’t going to forget we’ve been here.” She looked out the window, the rain still falling, the city’s neon lights a
tapestry
of colors. “We’ll go back,” she said, voice firm. “We’ll go back and finish what we started. For Morris. For anyone else who’s been taken by the darkness.” The rain intensified, the night swallowing the city’s sounds, but within the walls of The Raven’s Nest, a new resolve sparked. The chase was far from over; the underground market waited, its secrets humming beneath the streets, and Detective Harlow Quinn, with her worn leather
watch
and her unyielding will, stepped forward into the storm, ready to confront the unseen.
created_at
"2026-02-17T00:09:11.8685+00:00"
2/17/2026, 12:09:11 AM
model
"openrouter/aurora-alpha"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
18656
moderation_latency
(null)
generation_time
24743
tokens_prompt
914
tokens_completion
3519
native_tokens_prompt
800
native_tokens_completion
2905
native_tokens_completion_images
(null)
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
router
(null)
provider_responses
(null)
api_type
"completions"
id
"gen-1771286925-u83P0qiEYtGA67nCvUdw"
upstream_id
"gen-1771286925-u83P0qiEYtGA67nCvUdw"
total_cost
0
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Stealth"
Evaluation details
Result
Evaluator
Details
Meta Data
91.6667%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
8
adverbTagCount
1
adverbTags
0
"she replied, voice barely above a whisper [barely]"
87.1795%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
2340
totalAiIsmAdverbs
3
found
0
adverb
"quickly"
count
1
1
adverb
"softly"
count
1
2
adverb
"barely above a whisper"
count
1
highlights
0
"quickly"
1
"softly"
2
"barely above a whisper"
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)
0.0000%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
2340
totalAiIsms
28
found
0
word
"cacophony"
count
1
1
word
"tapestry"
count
1
2
word
"beacon"
count
2
3
word
"sanctuary"
count
1
4
word
"flickered"
count
1
5
word
"flicker"
count
2
6
word
"flicked"
count
1
7
word
"shimmered"
count
1
8
word
"glinting"
count
3
9
word
"steeled"
count
1
10
word
"weight"
count
5
11
word
"dancing"
count
1
12
word
"footfall"
count
1
13
word
"echo"
count
4
14
word
"echoed"
count
1
15
word
"echoing"
count
1
16
word
"etched"
count
1
highlights
0
"cacophony"
1
"tapestry"
2
"beacon"
3
"sanctuary"
4
"flickered"
5
"flicker"
6
"flicked"
7
"shimmered"
8
"glinting"
9
"steeled"
10
"weight"
11
"dancing"
12
"footfall"
13
"echo"
14
"echoed"
15
"echoing"
16
"etched"
100.0000%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
2
maxInWindow
1
found
0
label
"eyes widened/narrowed"
count
2
highlights
0
"eyes narrowed"
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
116
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
6
hedgeCount
7
narrationSentences
116
filterMatches
0
"watch"
hedgeMatches
0
"seemed to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
4
totalSentences
131
matches
0
"cross that threshold"
1
"let that happen"
2
"understand that people understand that I"
68.3141%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
47
mean
49.64
std
19.31
cv
0.389
sampleLengths
0
87
1
63
2
81
3
77
4
21
5
50
6
74
7
58
8
55
9
59
10
73
11
47
12
75
13
28
14
48
15
55
16
67
17
56
18
49
19
56
20
60
21
76
22
38
23
11
24
25
25
39
26
33
27
49
28
9
29
54
30
49
31
18
32
23
33
50
34
42
35
52
36
54
37
66
38
49
39
63
40
59
41
68
42
12
43
19
44
33
45
43
46
60
81.6092%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
9
totalSentences
116
matches
0
"was scarred"
1
"were fogged"
2
"was bought"
3
"was replaced"
4
"been left"
5
"was lit"
6
"being watched"
7
"were lost"
8
"was gone"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
0
totalVerbs
312
matches
(empty)
100.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
2027
adjectiveStacks
0
stackExamples
(empty)
adverbCount
30
adverbRatio
0.01480019733596448
lyAdverbCount
10
lyAdverbRatio
0.00493339911198816
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
17.81
std
8.25
cv
0.463
sampleLengths
0
19
1
25
2
43
3
18
4
21
5
24
6
17
7
15
8
19
9
21
10
9
11
11
12
12
13
15
14
20
15
19
16
8
17
13
18
19
19
14
20
17
21
3
22
25
23
22
24
24
25
20
26
14
27
24
28
21
29
12
30
22
31
18
32
19
33
22
34
16
35
21
36
19
37
17
38
6
39
20
40
21
41
2
42
21
43
15
44
19
45
18
46
13
47
15
48
15
49
19
40.0763%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
13
diversityRatio
0.20610687022900764
totalSentences
131
uniqueOpeners
27
0.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
8
fancyCount
6
fancyTags
0
"a voice whispered from the far corner, low and urgent (whisper)"
1
"she replied, voice barely above a whisper (reply, voice barely)"
2
"he said, eyes flicking to the rain‑streaked window (say, flick rain‑streak)"
3
"she said, voice steady despite the tremor she felt in her hands (say, voice feel)"
4
"Tomás’s voice, faint but clear, echoed in her ear, (echo)"
5
"she said, voice firm (say, voice)"
80.5203%