NC Bench
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Run: 2026-02-17-01KHMQFWVQYQ21AAHYA98A9NGK
Run Details
Model:
Claude Sonnet 4
Test:
Bad Writing Habits
Scenario:
Horror: alone in an eerie place at night
Duration:
39.4s
Cost:
$0.024729
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="4412" name="Aurora Carter" aliases="Rory, Laila, Aurora, Carter, Malphora" pronouns="she/her" species="Human" storyRole="Protagonist"> <eyeColor>bright blue</eyeColor> <hair>straight shoulder-length black</hair> <height>5'6"</height> <age>25</age> <scar>small crescent-shaped scar on her left wrist from a childhood accident</scar> <description>Aurora, referred to by her friends as Rory, is cool-headed, intelligent, and known for quick out-of-the-box thinking.</description> <backstory>Born in Cardiff to an Irish barrister father (Brendan Carter) and Welsh teacher mother (Jennifer Carter née Ellis), Rory reluctantly pursued Pre-Law at Cardiff University. She fled to London at the behest of her childhood friend Eva after leaving an abusive ex named Evan. By day, Rory works part-time as a delivery person for Yu-Fei Cheung's Golden Empress restaurant. She lives in a flat above Silas' bar.</backstory> </character> <location id="861" name="The Fae Grove" aliases="Isolde's grove, Richmond grove, the Grove" realm="Earth (Fae-touched)"> <parkLocation>Richmond Park</parkLocation> <standingStones>ancient oak standing stones mark the boundary</standingStones> <timeBehavior>time moves differently — an hour inside can be minutes or days outside</timeBehavior> <flora>wildflowers bloom year-round</flora> <description>A hidden clearing that exists in a pocket between Earth and the Fae realm.</description> </location> <item id="2001" name="Heartstone Pendant" aliases="the pendant, Heartstone" type="Artifact" origin="Dymas"> <gemstoneColor>deep crimson</gemstoneColor> <chainMaterial>silver chain</chainMaterial> <size>roughly the size of a thumbnail</size> <behavior>pulses faintly with warmth when near a Hel portal</behavior> <glow>faint inner glow</glow> <description>Given to Aurora by an unknown benefactor.</description> </item> </codex> Write a fully fleshed out scene of at least 1000 words in the horror genre. A character is alone in a strange, isolated place at night. They came here for a reason, but something feels off from the moment they arrive. The wrongness builds slowly — sounds that shouldn't be there, things that move at the edge of vision, a growing certainty that they are not alone. Build tension through restraint, not through gore. Use the codex entries above as your world reference for the character and setting. Only include the prose of the scene without any markdown or commentary.
Model response
Messages
Meta
AI
Aurora's breath misted in the cold night air as she pushed through the last line of trees into Richmond Park. The deli
very
van's engine ticked behind her, cooling metal contracting with soft pops that seemed unnaturally loud in the stillness. She shouldn't be here—not at half past midnight, not alone, not when e
very
instinct screamed at her to turn around and drive back to the familiar glow of London's streetlights. But the pendant at her throat had been burning against her skin for hours now, its crimson depths pulsing with that strange warmth that meant only one thing: a Hel portal was near. The ancient oaks
loomed
ahead, their massive trunks forming a rough circle that hurt to look at directly. Even in the darkness, Aurora could feel their
weight
, their wrongness. These weren't the
carefully
maintained trees of Richmond Park that tourists photographed during daylight hours. These were older, darker things that predated the neat walking paths and manicured lawns by centuries. She fumbled for her torch, the small beam cutting a weak path through the shadows between the standing stones. The pendant's warmth intensified as she approached, but something else made her steps falter. The silence was too complete. No rustling of small animals in the underbrush, no distant hum of traffic from the A3, no night birds calling. Even her own footfalls seemed muffled, as if the air itself had thickened around her. Aurora crossed the threshold between the stones and immediately regretted it. The world shifted, like stepping from a photograph into a painting where the artist had gotten the proportions
slightly
wrong. The grove beyond the oaks was impossibly large, stretching away into
darkness that her
torch couldn't penetrate. Wildflowers carpeted the ground in defiance of the October chill, their colors too vivid, too saturated. They swayed without wind. Time moved differently here—she'd heard the stories, read the warnings Eva had left scattered through her research. An hour inside could be minutes outside, or it could be days. But the pendant's pull was stronger now, urgent in a way that made her teeth ache. She took another step into the grove, then another. Behind her, the gap between the standing stones
flickered
like a heat mirage. The van was still visible, a reassuring slice of the normal world, but it
seemed to
be receding even though she hadn't moved that far. A sound made her freeze—soft, rhythmic, like breathing. But deeper than human lungs could manage, and coming from e
very
where at once. The flowers at her feet
trembled
, their petals catching starlight that shouldn't exist under the heavy canopy of leaves overhead. Aurora's grip tightened on the torch. "Hello?" Her voice cracked
slightly
, and she winced at how young she sounded. How afraid. The breathing continued, unchanged. But now she caught something else underneath it: a wet, sliding sound, as if something large
was dragging
itself across the forest floor just beyond the edge of her vision. She swept the beam in a wide arc, illuminating nothing but more of those too-bright flowers and the massive trunks of trees that definitely hadn't been there moments before. The grove was changing around her, expanding, rearranging itself while she
wasn't looking
directly at it. The pendant burned hotter against her throat. Close. Whatever she'd come here to find—or whatever had drawn her here—was
very
close now. Aurora forced herself to keep walking, following the invisible pull deeper into the grove. Her torch beam
wavered
as her hand
trembled
, creating
dancing
shadows that
seemed to
move independently of their sources. More than once, she caught glimpses of movement in her peripheral vision—tall shapes that melted away the moment she turned her head. The breathing sound grew louder, more labored. It reminded her of her grandfather in his final days, lungs filling with fluid, each breath a struggle. But this
was amplified
,
echoing
off trees that stretched impossibly high into a sky she could no longer see. Something brushed against her left shoulder. Aurora spun, heart hammering, but found only empty air and the gentle sway of flowers that reached barely to her waist. The touch had been light, almost caressing, but unmistakably deliberate. Like fingers trailing across fabric. "I know you're there." She
tried to
inject authority into her voice, the way she'd learned to do with difficult customers at the Golden Empress. "Show yourself." The breathing stopped. The silence that followed was worse than the sound had been. Aurora could hear her own pulse pounding in her ears, the rustle of her jacket as she turned in a slow circle, the soft crush of flower petals under her boots. But the grove itself had gone
completely
still, as if holding its breath. Then, from somewhere behind her, came the sound of
footsteps
. Slow, deliberate, matching her own rhythm with mocking precision. When she moved, they moved. When she stopped, they stopped. Aurora's free hand went to the pendant, its heat now almost painful against her palm. The crimson stone
was glowing
brighter, its inner light visible even through her fingers. Whatever was in this place, it
was connected
to the portals, to the wrongness that had been seeping into her world for months. She
started to
turn toward the
footsteps
, but they shifted, circling her. Always staying just outside the torch's reach, just beyond the boundary of what she could see. The sound was wrong—too light for something as large as the breathing suggested, but too heavy for human feet. More sounds joined the
footsteps
. A rustling that might have been wings, if wings could be the size of bedsheets. A low humming that vibrated in her chest cavity. Whispers in a language that made her molars ache just to hear. The grove
was waking
up around her, and Aurora realized with
crystalline
clarity that she had made a terrible mistake. Whatever lived in this place had been waiting for her, drawing her in with the pendant's false promise of answers. She was not the hunter here. She was the prey. The
footsteps
stopped directly behind her, close enough that she should have felt breath on her neck, should have sensed body heat. But there was only the cold night air and the certainty that something vast and patient
was studying
her with ancient, hungry eyes. Aurora took a careful step toward where she remembered the standing stones being, but the grove had shifted again. The familiar gap between the oaks
was gone
, replaced by more flowers, more trees, more
darkness that her
torch couldn't penetrate. The wet sliding sound returned, closer now, accompanied by something that might have been laughter if laughter could sound like breaking glass.
Evaluation details
Result
Evaluator
Details
Meta Data
100.0000%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
0
adverbTagCount
0
adverbTags
(empty)
55.3172%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1119
totalAiIsmAdverbs
5
found
0
adverb
"carefully"
count
1
1
adverb
"completely"
count
1
2
adverb
"slightly"
count
2
3
adverb
"very"
count
1
highlights
0
"carefully"
1
"completely"
2
"slightly"
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)
0.0000%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1119
totalAiIsms
13
found
0
word
"crystalline"
count
1
1
word
"flickered"
count
1
2
word
"wavered"
count
1
3
word
"trembled"
count
2
4
word
"loomed"
count
1
5
word
"weight"
count
1
6
word
"dancing"
count
1
7
word
"footsteps"
count
4
8
word
"echoing"
count
1
highlights
0
"crystalline"
1
"flickered"
2
"wavered"
3
"trembled"
4
"loomed"
5
"weight"
6
"dancing"
7
"footsteps"
8
"echoing"
100.0000%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
0
maxInWindow
0
found
(empty)
highlights
(empty)
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
0
hedgeCount
4
narrationSentences
75
filterMatches
(empty)
hedgeMatches
0
"seemed to"
1
"tried to"
2
"started to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
1
totalSentences
76
matches
0
"darkness that her"
91.9708%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
29
mean
38.31
std
18.08
cv
0.472
sampleLengths
0
70
1
33
2
60
3
73
4
11
5
57
6
45
7
47
8
41
9
21
10
34
11
45
12
22
13
55
14
44
15
6
16
36
17
27
18
3
19
55
20
29
21
52
22
47
23
41
24
46
25
4
26
45
27
40
28
22
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
3
totalSentences
75
matches
0
"was amplified"
1
"was connected"
2
"was gone"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
5
totalVerbs
179
matches
0
"was dragging"
1
"wasn't looking"
2
"was glowing"
3
"was waking"
4
"was studying"
88.5746%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
1112
adjectiveStacks
0
stackExamples
(empty)
adverbCount
59
adverbRatio
0.053057553956834536
lyAdverbCount
19
lyAdverbRatio
0.0170863309352518
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
76
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
76
mean
14.62
std
7.49
cv
0.512
sampleLengths
0
20
1
20
2
30
3
33
4
18
5
11
6
15
7
16
8
19
9
14
10
5
11
20
12
15
13
11
14
20
15
17
16
16
17
4
18
17
19
12
20
16
21
9
22
13
23
25
24
8
25
13
26
20
27
6
28
13
29
2
30
4
31
30
32
29
33
16
34
7
35
1
36
14
37
14
38
19
39
22
40
7
41
18
42
19
43
6
44
21
45
10
46
5
47
25
48
2
49
3
51.7544%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
9
diversityRatio
0.3815789473684211
totalSentences
76
uniqueOpeners
29
100.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
0
fancyCount
0
fancyTags
(empty)
87.5069%