NC Bench
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Run: 2026-02-17-01KHMPBBCEE59JX32E7ZNGRT7C
Run Details
Model:
GPT-4o Mini (temp=0)
Test:
Bad Writing Habits
Scenario:
Mystery: examining a crime scene
Duration:
22.3s
Cost:
$0.000923
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 earth and rust, a pungent reminder of the abandoned Tube station beneath Camden. Detective Harlow Quinn stepped through the crumbling archway, her sharp jaw set in a grim line. The flickering fluorescent lights overhead cast a sickly glow on the scene before her, illuminating the chaos that had unfolded in the shadows of the Veil Market. A body lay sprawled on the ground, the pale skin
stark
against the dark concrete. Quinn knelt beside it, her worn leather
watch
creaking as she leaned forward. The victim, a young man with tousled hair and a leather jacket, had a strange symbol
etched
into his forearm—an
intricate
design that twisted and turned like a serpent. She recognized it from her research into the occult, a mark often associated with the darker dealings of the supernatural underworld. “Detective Quinn,” a voice called from behind her, breaking her concentration. It was DS Harper, her colleague, his brow
furrowed
in concern. “You shouldn’t be here. This is a classified scene.” Quinn straightened, her brown eyes narrowing. “Classified or not, I’m not leaving until I understand what happened here.” She gestured to the body. “What do we know?” Harper shifted uncomfortably, his gaze flicking to the body and then back to her. “Not much. Witnesses reported a scuffle, but no one saw who did it. Just a flash of movement, and then he was down. They say he was involved with the Market.” Quinn’s heart raced. The Veil Market was a dangerous place, a hidden black market where enchanted goods and forbidden knowledge changed hands under the cover of darkness. “Involved how?” she pressed, her voice steady despite the unease creeping into her gut. “Rumors,” Harper replied, his tone defensive. “He was seen with a group known for dealing in alchemical substances. You know how it is down here—everyone’s got a story, but no one wants to get involved.” Quinn’s gaze drifted back to the body. The symbol on the man’s arm was too deliberate to be a mere tattoo; it was a sigil, a mark of allegiance or perhaps a warning. She reached out, her fingers brushing against the cool skin, and felt a shiver run through her. “This isn’t just a random act of violence. There’s something more at play here.” “Or it’s just a gang dispute,” Harper suggested, his voice laced with skepticism. “We can’t jump to conclusions.” Quinn stood, her mind racing. “Look at the way he fell. There’s no blood pooling around him, no signs of a struggle beyond the mark on his arm. If he was attacked, there would be more evidence of a fight.” She stepped back, scanning the area. “And the Market’s been quiet lately. Too quiet.” “Maybe they’re just laying low,” Harper offered, but Quinn could see the doubt in his eyes. “No,” she said, her voice firm. “Something’s wrong. We need to find out who he was meeting.” She turned, her gaze sweeping over the remnants of the scene. “There’s got to be something here that connects him to the Market.” As she moved further into the station, the shadows
seemed to
shift around her, whispering secrets she couldn’t quite grasp. The walls
were lined
with faded posters, remnants of a time when the station had been alive with commuters. Now, it was a tomb, a place where the living and the dead intersected in ways that defied explanation. “Quinn,” Harper called, his voice
echoing
in the hollow space. “Where are you going?” “Just looking,” she replied, her instincts guiding her deeper into the darkness. She spotted a small alcove, half-hidden behind a rusted vending machine. As she approached, her heart quickened. There, on the ground, lay a small brass compass, its casing tarnished with a patina of verdigris. She knelt, picking it up
carefully
. The face
was etched
with protective sigils, and the needle
quivered
, pointing toward the far wall of the station. Quinn’s breath caught in her throat. This was no ordinary compass; it was a Veil Compass, crafted by a Shade artisan, attuned to supernatural energy. “Quinn!” Harper’s voice was sharper now,
tinged
with urgency. “We need to get back to the body.” “Not yet,” she said, her eyes fixed on the compass. “This could lead us to something important.” “Or it could get us killed,” he shot back, but she could see the curiosity in his eyes, the way he leaned closer to catch a glimpse of the compass. Quinn stood, the compass clutched
tightly
in her hand. “If this is here, it means he was involved with something bigger than a gang dispute. We need to follow it.” “Follow it where?” Harper asked, exasperation creeping into his tone. “Wherever it leads,” she replied, her voice steady. “The Market moves every full moon. If we can find out where it’s going, we might uncover who he was meeting and why he was killed.” Harper hesitated, glancing back at the body. “And if it’s a trap?” “Then we’ll be ready,” Quinn said, her resolve hardening. She could feel the
weight
of the case pressing down on her, the memory of her lost partner, DS Morris,
echoing
in her mind. He had
been taken
from her during a case that had spiraled into the supernatural, and she wouldn’t
let that happen
again. With a determined nod, she turned and headed toward the exit, the compass guiding her steps. The needle swung wildly, then steadied, pointing toward a narrow passageway that led deeper into the station. Quinn felt a thrill of
anticipation
mixed with dread. Whatever lay ahead, she was ready to face it. “Quinn, wait!” Harper called, but she didn’t stop. The shadows beckoned, and she could almost hear the whispers of the Market, calling her to uncover the truth. As she stepped into the darkness, the compass in her hand pulsed with energy, a heartbeat of the unseen world. Quinn knew she was on the brink of something monumental, a revelation that could change everything. And she wouldn’t let fear hold her back. Not this time.
Evaluation details
Result
Evaluator
Details
Meta Data
100.0000%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
14
adverbTagCount
0
adverbTags
(empty)
80.2956%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1015
totalAiIsmAdverbs
2
found
0
adverb
"carefully"
count
1
1
adverb
"tightly"
count
1
highlights
0
"carefully"
1
"tightly"
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
1015
totalAiIsms
11
found
0
word
"tinged"
count
1
1
word
"quivered"
count
1
2
word
"intricate"
count
1
3
word
"stark"
count
1
4
word
"anticipation"
count
1
5
word
"furrowed"
count
1
6
word
"weight"
count
1
7
word
"echoing"
count
2
8
word
"etched"
count
2
highlights
0
"tinged"
1
"quivered"
2
"intricate"
3
"stark"
4
"anticipation"
5
"furrowed"
6
"weight"
7
"echoing"
8
"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
57
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
1
hedgeCount
1
narrationSentences
57
filterMatches
0
"watch"
hedgeMatches
0
"seemed to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
1
totalSentences
71
matches
0
"let that happen"
94.0452%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
27
mean
37.48
std
17.96
cv
0.479
sampleLengths
0
65
1
78
2
31
3
27
4
45
5
41
6
35
7
64
8
18
9
54
10
16
11
40
12
58
13
14
14
46
15
50
16
17
17
17
18
30
19
30
20
10
21
34
22
12
23
55
24
51
25
27
26
47
98.2456%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
3
totalSentences
57
matches
0
"were lined"
1
"was etched"
2
"been taken"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
0
totalVerbs
132
matches
(empty)
100.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
732
adjectiveStacks
0
stackExamples
(empty)
adverbCount
18
adverbRatio
0.02459016393442623
lyAdverbCount
5
lyAdverbRatio
0.006830601092896175
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
71
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
71
mean
14.25
std
8
cv
0.561
sampleLengths
0
22
1
16
2
27
3
15
4
13
5
29
6
21
7
11
8
11
9
9
10
6
11
17
12
4
13
14
14
31
15
3
16
24
17
14
18
6
19
29
20
7
21
26
22
17
23
14
24
13
25
5
26
5
27
41
28
8
29
16
30
6
31
22
32
12
33
20
34
19
35
19
36
10
37
4
38
12
39
11
40
6
41
17
42
6
43
19
44
6
45
19
46
9
47
8
48
10
49
7
77.4648%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
0
diversityRatio
0.4647887323943662
totalSentences
71
uniqueOpeners
33
14.2857%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
14
fancyCount
9
fancyTags
0
"a voice called from behind her, breaking her concentration (call break)"
1
"pressed (pressed)"
2
"Harper suggested, his voice laced with skepticism (suggest, lace)"
3
"Harper offered, but Quinn could see the doubt in his eyes (offer, see)"
4
"Harper called, his voice echoing in the hollow space (call, echo)"
5
"she replied, her instincts guiding her deeper into the darkness (reply, guide)"
6
"she said, her eyes fixed on the compass (say, fix)"
7
"he shot back, but she could see the curiosity in his eyes, the way he leaned closer to catch a glimpse of the compass (shoot back, see lean catch)"
8
"Quinn said, her resolve hardening (say, harden)"
86.1375%