NC Bench
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Run: 2026-02-17-01KHMPBG5M4VEF9QR9NZ5HT0JQ
Run Details
Model:
GPT-4o Mini (temp=0)
Test:
Bad Writing Habits
Scenario:
Mystery: examining a crime scene
Duration:
29.4s
Cost:
$0.001089
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 was thick with
the scent of damp concrete and something else—something metallic that clung to the back of Detective Harlow Quinn’s throat as she stepped into the abandoned Tube station beneath Camden. The flickering fluorescent lights overhead cast a sickly pallor over the scene, illuminating the chaos that had unfolded in the shadows. A body lay sprawled on the ground, limbs twisted at unnatural angles, a pool of dark crimson pooling around it like a grotesque halo. Quinn’s sharp jaw tightened as she surveyed the area, her brown eyes narrowing. The victim, a young man in his twenties, wore a leather jacket that had seen better days. His face was pale, eyes wide open in a final expression of terror. She knelt beside him, her worn leather
watch
creaking
softly
as she leaned closer. The blood was still fresh,
glistening
under the harsh light, but there was something about the scene that felt off. “Detective Quinn,” a voice called from behind her, breaking her concentration. It was DS Markham, a colleague she had worked with on several cases. He approached, his brow
furrowed
, hands shoved deep into the pockets of his coat. “What do you think?” Quinn straightened, her gaze flicking to the scattered debris around the body. “Looks like a mugging gone wrong,” she replied, though the words felt hollow. “But the blood… it’s too clean. No signs of struggle.” Markham scratched his head, glancing around the dimly lit station. “You think it’s something else?” “Something else,” she
echoed
, her mind racing. “Look at the way he’s positioned. It’s almost as if he was placed here
deliberately
.” She gestured to the body, noting the angle of his head, the way his jacket lay open, revealing a
glint
of metal beneath. “And that.” Markham leaned in closer, squinting. “A knife? Or a—” “Not a knife,” Quinn interrupted, her heart quickening. “It’s a bone token.” She reached out,
carefully
lifting the edge of the jacket to reveal a small, intricately carved piece of bone nestled against the victim’s chest. The markings were faint but unmistakable—sigils she recognized from her own research into the occult. “This isn’t just a murder. It’s a message.” Markham’s
eyes widened
. “A message? From who?” Quinn stood, her mind racing through the possibilities. “The Veil Market,” she said, her voice low. “This is connected to the underground market. Someone wanted him dead, and they wanted it to look like a simple crime.” “Why here?” Markham asked, glancing around the station, his expression shifting from confusion to concern. “Why not somewhere more… public?” “Because this place is hidden,” Quinn replied, her thoughts sharpening. “It’s a perfect location for a transaction gone wrong. The Market moves every full moon, and it’s likely they were meeting here to exchange something.” She turned, scanning the walls, the remnants of old advertisements peeling away in the damp air. “But what?” “Maybe he was a buyer?” Markham suggested, his voice tentative. “Or a seller?” “Or a pawn,” Quinn said, her mind racing. “Someone wanted him out of the way, but they needed to make it look like a simple mugging. They didn’t count on us finding the token.” She stepped back, her gaze sweeping over the scene again. The body, the blood, the token—it all felt like pieces of a puzzle that refused to fit together. She needed more information, something to tie it all back to the Market. “Let’s check his pockets,” she said, moving toward the victim’s jacket. Markham hesitated but followed her lead, his hands moving with a practiced ease as he rifled through the man’s belongings. “Wallet, ID,” he muttered, pulling out a small leather wallet. “Name’s Jamie Carter. No priors, just a regular bloke.” He frowned, flipping through the contents. “No cash, though. Just a few cards.” “Nothing unusual?” Quinn pressed, her eyes scanning the area for any sign of a struggle. “Just a library card and a membership to some gym,” Markham replied, his brow
furrowing
. “Wait—what’s this?” He pulled out a crumpled piece of paper, the edges torn and stained. Quinn leaned in, her heart racing as he unfolded it. The paper
was covered
in hastily scrawled notes, symbols that made her pulse quicken. “These are sigils,” she breathed, recognizing the markings from her studies. “He was researching something—something dangerous.” “Or he got in over his head,” Markham suggested, his voice low. “Maybe he was trying to buy something from the Market and it went south.” “Or he was trying to warn someone,” Quinn countered, her mind racing. “We need to find out who he was meeting. If he was involved with the Market, there’s a chance he wasn’t the only one.” Markham nodded, his expression serious. “I’ll get the forensics team down here. They’ll want to take a look at the token and the notes.” Quinn waved him off, her mind already racing ahead. “No, I need to go to the Market. I need to find out what he was involved in before it’s too late.” “Quinn, wait—” Markham started, but she was already moving, her military precision guiding her steps as she made her way toward the exit. The Veil Market was a place of shadows and whispers, a hidden world beneath the surface of London where the supernatural thrived. She had been there before, but tonight felt different. The air crackled with energy, and she could almost feel the pulse of the city beneath her feet as she
navigated
the winding streets. As she approached the entrance, a chill ran down her spine. The bone token felt heavy in her pocket, a reminder of the life that had
been snuffed
out. She had to find answers, to uncover the truth behind Jamie Carter’s death. The Market was alive with activity, stalls overflowing with enchanted goods and alchemical substances. Quinn moved through the throng, her eyes scanning the faces, searching for anyone who might know something. “Detective Quinn!” a voice called out, and she turned to see a familiar figure emerging from the shadows. It was Eva Kowalski, her childhood friend and an occult researcher. “Eva,” Quinn said, relief flooding her. “I need your help.” “What’s going on?” Eva asked, her green eyes wide behind her round glasses. “You look like you’ve seen a ghost.” “Worse,” Quinn replied, pulling the bone token from her pocket. “I found a body. He was connected to the Market, and I need to know what he was involved in.” Eva’s expression shifted, concern
etched
on her freckled face. “A body? Here? That’s… dangerous. You shouldn’t be here alone.” “I don’t have time for that,” Quinn snapped, her frustration bubbling to the surface. “I need information, and you’re the only one I can trust.” “Okay, okay,” Eva said, holding up her hands in surrender. “Let’s find a quieter spot. I might know someone who can help.” Quinn nodded, her heart racing as they moved deeper into the Market. The shadows
seemed to
close in around them, and she couldn’t shake the feeling that they
were being
watch
ed. But she had to push through. Jamie Carter’s death was just the beginning, and she
was determined
to uncover the truth, no matter the cost.
Evaluation details
Result
Evaluator
Details
Meta Data
100.0000%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
22
adverbTagCount
0
adverbTags
(empty)
74.9791%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1199
totalAiIsmAdverbs
3
found
0
adverb
"carefully"
count
1
1
adverb
"deliberately"
count
1
2
adverb
"softly"
count
1
highlights
0
"carefully"
1
"deliberately"
2
"softly"
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)
41.6180%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1199
totalAiIsms
7
found
0
word
"glistening"
count
1
1
word
"glint"
count
1
2
word
"furrowed"
count
1
3
word
"furrowing"
count
1
4
word
"echoed"
count
1
5
word
"etched"
count
1
6
word
"navigated"
count
1
highlights
0
"glistening"
1
"glint"
2
"furrowed"
3
"furrowing"
4
"echoed"
5
"etched"
6
"navigated"
66.6667%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
2
maxInWindow
2
found
0
label
"eyes widened/narrowed"
count
1
1
label
"air was thick with"
count
1
highlights
0
"eyes widened"
1
"The air was thick with"
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
66
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
1
hedgeCount
1
narrationSentences
66
filterMatches
0
"watch"
hedgeMatches
0
"seemed to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
0
totalSentences
90
matches
(empty)
100.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
36
mean
33.19
std
17.05
cv
0.514
sampleLengths
0
79
1
77
2
42
3
35
4
15
5
47
6
9
7
59
8
7
9
37
10
20
11
53
12
13
13
34
14
41
15
31
16
32
17
15
18
30
19
40
20
26
21
36
22
24
23
31
24
23
25
55
26
42
27
31
28
29
29
10
30
20
31
30
32
19
33
25
34
22
35
56
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
3
totalSentences
66
matches
0
"was covered"
1
"been snuffed"
2
"was determined"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
1
totalVerbs
160
matches
0
"were being"
100.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
811
adjectiveStacks
0
stackExamples
(empty)
adverbCount
18
adverbRatio
0.02219482120838471
lyAdverbCount
6
lyAdverbRatio
0.007398273736128237
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
90
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
90
mean
13.28
std
7.43
cv
0.559
sampleLengths
0
34
1
21
2
24
3
13
4
17
5
13
6
14
7
20
8
11
9
13
10
14
11
4
12
12
13
13
14
10
15
10
16
5
17
7
18
38
19
2
20
5
21
4
22
8
23
28
24
15
25
8
26
3
27
4
28
8
29
8
30
21
31
15
32
5
33
10
34
41
35
2
36
10
37
3
38
8
39
26
40
10
41
18
42
13
43
11
44
20
45
10
46
15
47
7
48
15
49
15
65.9259%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
4
diversityRatio
0.4222222222222222
totalSentences
90
uniqueOpeners
38
0.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
22
fancyCount
18
fancyTags
0
"a voice called from behind her, breaking her concentration (call break)"
1
"she replied, though the words felt hollow (reply, feel)"
2
"she echoed, her mind racing (echo, race)"
3
"Quinn interrupted, her heart quickening (interrupt, quicken)"
4
"Quinn replied, her thoughts sharpening (reply, sharpen)"
5
"Quinn said, her mind racing (say, race)"
6
"she said, moving toward the victim’s jacket (say, move)"
7
"he muttered, pulling out a small leather wallet (mutter, pull out)"
8
"pressed (pressed)"
9
"Markham replied, his brow furrowing (reply, furrow)"
10
"she breathed, recognizing the markings from her studies (breathe, recognize)"
11
"Markham suggested, his voice low (suggest)"
12
"Quinn countered, her mind racing (counter, race)"
13
"started (start)"
14
"Quinn said, relief flooding her (say, flood)"
15
"Quinn replied, pulling the bone token from her pocket (reply, pull)"
16
"Quinn snapped, her frustration bubbling to the surface (snap, bubble)"
17
"Eva said, holding up her hands in surrender (say, hold up hand in)"
85.2465%