NC Bench
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Run: 2026-02-17-01KHMMESNV1ZS7SM1V5FJ1J8DX
Run Details
Model:
GPT-4o, May 13th (temp=0)
Test:
Bad Writing Habits
Scenario:
Thriller: chase through city streets
Duration:
17.8s
Cost:
$0.029390
Provider:
OpenAI
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 down on the streets of Soho, turning the cobblestones into a slick, treacherous path. Detective Harlow Quinn moved with the precision of a soldier, her sharp jaw set in determination. Her worn leather
watch
, a relic of countless late nights and early mornings, ticked steadily as she sprinted through the downpour. The suspect, a shadowy figure in a dark hoodie, darted ahead, slipping through the narrow alleys with the ease of someone who knew the city’s underbelly intimately. Quinn’s salt-and-pepper hair clung to her forehead, droplets of rain tracing lines down her face. She ignored the discomfort, her focus locked on the figure ahead. She had been trailing this lead for weeks, a thread that might
unravel
the mystery surrounding her partner’s death. The supernatural whispers that had haunted her since that night three years ago had led her here, to this chase through the rain-soaked streets. The suspect glanced back, eyes wide with panic, and Quinn caught a glimpse of a familiar face. Tomás Herrera. The former paramedic had been on her radar for his connections to the clique, a group she suspected of
being involved
in criminal activities with a supernatural twist. She pushed harder, her breath coming in controlled bursts, her feet pounding against the wet pavement. Herrera veered
suddenly
, disappearing down a set of stone steps leading to an old Tube station. Quinn hesitated for a fraction of a second, her instincts screaming caution. The Veil Market. She had heard whispers of the underground market, a place where the supernatural and the illicit intertwined. It was dangerous territory, but she couldn’t let Herrera slip away. She descended the steps two at a time, her hand instinctively reaching for the bone token she had acquired during her investigation. The token was the key to entry, a small piece of insurance in a world where the rules were anything but ordinary. The entrance to the Veil Market
loomed
ahead, a heavy iron door set into the stone wall. She pressed the token into the slot, and the door creaked open, revealing a dimly lit passageway. The air inside was thick with the scent of damp earth and something else, something metallic and sharp. Quinn’s eyes adjusted to the gloom, and she moved forward, her senses on high alert. The passageway opened into a vast underground chamber, the Veil Market spread out before her like a hidden city. Stalls lined the walls, their wares
glinting
in the low light—enchanted goods, alchemical substances, and items that defied explanation. Quinn scanned the crowd, her eyes locking onto Herrera as he weaved through the throng. She followed, her movements careful and deliberate. The market was a maze of narrow pathways and hidden corners, each turn revealing new dangers. She passed a stall selling vials of glowing liquid, the vendor’s eyes following her with a predatory gleam. Another stall displayed ancient tomes, their pages whispering secrets to those who dared to listen. Herrera slipped into a hidden back room, accessible through a bookshelf that swung open with a touch. Quinn approached
cautiously
, her hand resting on the grip of her service weapon. She pushed the bookshelf aside and stepped into the room, her eyes sweeping the space. It was dimly lit, the walls lined with old maps and black-and-white photographs. The Raven’s Nest. She recognized the decor from her previous visits to Silas’ bar, a place where the supernatural and the mundane intersected. Herrera stood at the far end of the room, his back to her. He turned
slowly
, his warm brown eyes meeting hers with a mixture of defiance and resignation. The scar on his left forearm was a
stark
reminder of the dangers he had faced, a
testament
to his survival in a world that was anything but kind. “Detective Quinn,” he said, his voice steady despite the tension in the air. “I didn’t expect to see you here.” Quinn took a step forward, her gaze
unwavering
. “You’ve been running, Herrera. I need to know why.” He sighed, running a hand through his short curly hair. “It’s not what you think. I’m not involved in anything criminal. I’m trying to protect people, to keep them safe from things they don’t understand.” “Like what happened to Morris?” Quinn’s voice was sharp, the pain of her partner’s loss still raw. Herrera’s expression softened, a
flicker
of empathy in his eyes. “Yes. There are forces at
play that you
can’t even begin to comprehend. I’m trying to stop them, to prevent more deaths.” Quinn’s grip on her weapon tightened. “Then help me understand. Tell me what you know.” He hesitated, glancing around the room as if searching for the right words. “There’s a group, a powerful one, that’s been manipulating events from the shadows. They’re the ones responsible for Morris’ death, and they’re planning something big. I’ve been gathering information, trying to piece it all together.” Quinn’s mind raced, the pieces of the puzzle starting to fall into place. “And the Veil Market? What’s its role in all this?” “It’s a hub, a place where they conduct their business and gather resources. If we can find out what they’re planning, we might be able to stop them.” Quinn took a deep breath, the
weight
of the decision pressing down on her. She had spent years chasing shadows, trying to make sense of the supernatural elements that had invaded her life. Now, she stood on the brink of a revelation, a chance to uncover the truth and bring justice to her partner’s memory. “Alright,” she said, her voice firm. “We do this together. But if you’re lying to me, Herrera, I’ll make sure you pay for it.” He nodded, a determined look in his eyes. “I understand. Let’s get to work.” Together, they stepped back into the Veil Market, the hidden world of the supernatural stretching out before them. The rain-soaked streets of Soho seemed a distant memory, replaced by the dimly lit corridors and whispered secrets of the underground market. Quinn’s heart pounded with a mix of fear and
anticipation
, the thrill of the chase giving way to the promise of answers. As they
navigated
the labyrinthine paths of the market, Quinn couldn’t shake the feeling that they
were being
watch
ed. The vendors and patrons eyed them with suspicion, their gazes lingering a moment too long. She kept her hand close to her weapon, ready for anything. They reached a stall at the far end of the market, its wares hidden beneath a heavy black cloth. The vendor, a tall figure with piercing blue eyes, regarded them with a knowing smile. “Looking for something specific?” he asked, his voice smooth and unctuous. Herrera stepped forward, his tone measured. “We need information. About the group operating here.” The vendor’s smile widened. “Information comes at a price. What are you willing to offer?” Quinn’s patience
was wearing
thin. “We don’t have time for games. Tell us what you know, or we’ll find someone who will.” The vendor’s eyes
flicked
to Quinn, a hint of amusement in his gaze. “Very well. But be careful what you wish for. The truth can be a dangerous thing.” He lifted the cloth, revealing a collection of documents and maps. Herrera leaned in, scanning the papers with practiced ease. “This is it,” he murmured, pointing to a map marked with symbols and notes. “Their next move. We need to get there before they do.” Quinn nodded, her resolve hardening. “Let’s go.” As they left the Veil Market, the
weight
of their mission settled over them. The rain had stopped, the streets of Soho
glistening
under the streetlights. Quinn glanced at Herrera, a silent understanding passing between them. They were in this together, bound by a shared goal and the promise of justice. The chase was far from over, but for the first time in years, Quinn felt
a glimmer of hope
. The truth was within reach, and she would stop at nothing to uncover it.
created_at
"2026-02-17T01:47:11.467553+00:00"
2/17/2026, 1:47:11 AM
model
"openai/gpt-4o-2024-05-13"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
479
moderation_latency
(null)
generation_time
17549
tokens_prompt
914
tokens_completion
2072
native_tokens_prompt
811
native_tokens_completion
1689
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
0.02939
router
(null)
provider_responses
0
id
"chatcmpl-DA4Srimw366mWrtwZ39DIMzejJEh9"
status
200
is_byok
false
latency
450
endpoint_id
"3d6584e7-a2bb-48d6-903d-24e3d90e7e55"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-4o-2024-05-13"
api_type
"completions"
id
"gen-1771292813-o7B5tzsNxQlZIILaI05D"
upstream_id
"chatcmpl-DA4Srimw366mWrtwZ39DIMzejJEh9"
total_cost
0.02939
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
Evaluation details
Result
Evaluator
Details
Meta Data
100.0000%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
4
adverbTagCount
0
adverbTags
(empty)
69.9925%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1333
totalAiIsmAdverbs
4
found
0
adverb
"cautiously"
count
1
1
adverb
"slowly"
count
1
2
adverb
"suddenly"
count
1
3
adverb
"very"
count
1
highlights
0
"cautiously"
1
"slowly"
2
"suddenly"
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)
2.4756%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1333
totalAiIsms
13
found
0
word
"testament"
count
1
1
word
"flicker"
count
1
2
word
"flicked"
count
1
3
word
"glistening"
count
1
4
word
"glinting"
count
1
5
word
"loomed"
count
1
6
word
"unwavering"
count
1
7
word
"stark"
count
1
8
word
"anticipation"
count
1
9
word
"weight"
count
2
10
word
"navigated"
count
1
11
word
"unravel"
count
1
highlights
0
"testament"
1
"flicker"
2
"flicked"
3
"glistening"
4
"glinting"
5
"loomed"
6
"unwavering"
7
"stark"
8
"anticipation"
9
"weight"
10
"navigated"
11
"unravel"
100.0000%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
1
maxInWindow
1
found
0
label
"flicker of emotion"
count
1
highlights
0
"a glimmer of hope"
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
75
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
1
hedgeCount
0
narrationSentences
75
filterMatches
0
"watch"
hedgeMatches
(empty)
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
1
totalSentences
91
matches
0
"play that you"
100.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
32
mean
41.44
std
22.38
cv
0.54
sampleLengths
0
80
1
69
2
63
3
59
4
78
5
71
6
71
7
81
8
58
9
20
10
17
11
35
12
17
13
32
14
15
15
48
16
23
17
28
18
55
19
24
20
14
21
62
22
45
23
45
24
14
25
15
26
22
27
29
28
45
29
7
30
51
31
33
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
1
totalSentences
75
matches
0
"being involved"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
2
totalVerbs
160
matches
0
"were being"
1
"was wearing"
100.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
1084
adjectiveStacks
0
stackExamples
(empty)
adverbCount
18
adverbRatio
0.016605166051660517
lyAdverbCount
12
lyAdverbRatio
0.01107011070110701
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
91
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
91
mean
14.57
std
6.37
cv
0.437
sampleLengths
0
16
1
16
2
21
3
27
4
15
5
11
6
19
7
24
8
17
9
2
10
28
11
16
12
16
13
12
14
3
15
17
16
11
17
22
18
22
19
17
20
17
21
18
22
15
23
19
24
19
25
15
26
7
27
16
28
18
29
15
30
17
31
13
32
15
33
13
34
3
35
20
36
13
37
16
38
29
39
13
40
7
41
8
42
9
43
10
44
25
45
17
46
10
47
22
48
6
49
9
52.3810%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
4
diversityRatio
0.34065934065934067
totalSentences
91
uniqueOpeners
31
100.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
4
fancyCount
1
fancyTags
0
"he murmured, pointing to a map marked with symbols and notes (murmur, point mark note)"
89.6970%