NC Bench
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Run: 2026-02-17-01KHMWDKNC6PZMNWXPW1B922W6
Run Details
Model:
Claude Sonnet 4
Test:
Bad Writing Habits
Scenario:
Romance: separated couple reunites
Duration:
39.6s
Cost:
$0.025677
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> <character id="4415" name="Lucien Moreau" aliases="Lucien, Luc, the Frenchman" pronouns="he/him" species="Half-Demon" storyRole="Ally"> <eyeColor>heterochromatic — one amber, one black</eyeColor> <hair>slicked-back platinum blond</hair> <height>5'11"</height> <age>32</age> <cane>ivory-handled cane that conceals a thin blade</cane> <dress>tailored charcoal suits</dress> <description>An impeccably dressed fixer and information broker in London's supernatural underworld. He speaks four languages fluently.</description> <backstory>Born in Marseille to a human mother and a demon father from the realm of Avaros.</backstory> </character> <location id="858" name="Eva's Flat" aliases="Eva's place, the flat on Brick Lane" realm="Earth"> <cat>tabby cat named Ptolemy</cat> <security>three deadbolts on the front door</security> <description>A cramped one-bedroom flat above a curry house on Brick Lane, East London. Every surface is covered with books, scrolls, and research notes.</description> </location> </codex> Write a fully fleshed out scene of at least 1000 words in the romance genre. Two people who parted on complicated terms are forced together again when one shows up unannounced at the other's flat. There's history between them — attraction, hurt, and things left unsaid. Write the scene from the moment the door opens. 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 three deadbolts clicked open in quick succession, and Eva's door swung wide to reveal Aurora standing in the doorway, takeout bag clutched in one hand and her motorcycle helmet tucked under the other arm. Her bright blue eyes went wide, then narrowed into something harder. "Lucien." The name fell from her lips like a stone into still water. He straightened in the armchair where he'd been sitting, amber and black eyes drinking in the sight of her. Six months. It had been six months since she'd walked out of his Mayfair office with her shoulders set like armor and her
jaw clenched
tight enough to crack teeth. She looked exactly the same—straight black hair falling to her shoulders, that small crescent scar visible on her left wrist as she shifted her grip on the helmet. But something in her posture had changed. The defensive hunch
was gone
, replaced by a confidence that made his chest tighten. "Bonjour, ma chérie." His fingers found the ivory handle of his cane, though he didn't rise. Not yet. "You look well." "Don't." The word came out sharp enough to cut. She stepped fully into the flat, letting the door fall shut behind her with a solid thunk. "Don't you dare 'ma chérie' me after showing up here without warning." Ptolemy
chose that moment
to emerge from beneath a stack of ancient texts, padding over to wind around Aurora's legs with a pleased purr. She bent to scratch behind his ears, and Lucien caught the faint scent of rain and motor oil that always
seemed to
cling to her after her delivery runs. "Eva invited me," he said
carefully
, watching her face for tells. The slight tightening around her eyes told him she hadn't known. "She needed information about the Avaros incursions. Professional courtesy." "Professional courtesy." Aurora straightened, setting the takeout bag on Eva's cluttered dining table with more force than necessary. A tower of scrolls wobbled dangerously. "Is that what we're calling it now?" The flat felt smaller with her in it, the cramped space between the book-laden surfaces
suddenly
electric. He'd forgotten how she filled a room without trying, how her presence could make the air itself
seem to
shimmer with possibility and danger in equal measure. "Where is Eva, anyway?" Aurora shrugged out of her leather jacket, hanging it on the back of a chair. The simple motion sent that familiar ache through his chest—too many nights watching her perform that same gesture in his flat, too many mornings waking up to find the chair empty. "Research meeting at the British Library. She should return within the hour." "Of course she should." Aurora's laugh held no humor. "How convenient for you both." Lucien finally rose, his cane tapping against the worn floorboards as he moved closer. Not too close—he'd
learned that lesson
the hard way. Aurora had always been like a cat herself, liable to bolt if cornered. "I did not know you would be here." "Bullshit." She spun to face him, blue eyes blazing. "You know everything that happens in this city. Don't insult my intelligence by pretending otherwise." She was right, of course. He'd known she'd taken to bringing Eva dinner on Thursday evenings, knew it with the same certainty he knew the tides of information that flowed through London's supernatural underground. But knowing and planning were different creatures entirely. "You're right." The admission cost him, but her shoulders relaxed a fraction. "I knew. But I came anyway." "Why?" The simple question hung between them like a blade. He could lie—God knew he'd built his reputation on beautiful, useful lies. Could tell her it was purely
business, that the
Avaros situation required all available resources. Could pretend the past six months hadn't been a special kind of hell, all charcoal suits and empty conversations with clients who weren't her. Instead, he said, "Because I am a fool." Something
flickered
across her face too
quickly
to name. She turned away, busying herself with unpacking containers of Thai food from the bag. Her movements were precise, controlled, but he caught the slight tremor in her fingers as she set down the pad thai. "You can't just—" She stopped, pressing her palms flat against the table. "You can't just show up here and say things
like that, Luc
. Not after what happened." "What happened," he said quietly, "was a misunderstanding." "A misunderstanding?" She whirled around, and there it was—the fire he'd fallen for in the first place. "You lied to me. For months." "I omitted certain details about the nature of my work—" "You used me." The words came out raw, scraped from somewhere deep. "That vampire nest in Southwark, the werewolf pack in Greenwich—you sent me in there blind because it was convenient. Because I was too stupid to ask the right questions." Ptolemy meowed plaintively and slunk away to hide behind a stack of grimoires. Even the cat knew when to retreat. "You were never stupid," Lucien said. "Stubborn, reckless, magnificently infuriating—but never stupid." "Don't." But there was less heat in it now, more exhaustion. She sank into the chair across from where he'd been sitting, and for a moment she looked younger than her twenty-five years. Vulnerable in a way that made his demon blood sing with the need to protect her from everything, including himself. "I made mistakes," he continued, choosing each word like a surgeon selecting instruments. "I should have told you what you were walking into. Should have trusted you with the truth from the beginning." "Should have." She laughed, short and bitter. "The world's most useless phrase." He wanted to cross to her, to drop to his knees beside her chair and explain everything—the way she'd become essential as breathing, the terror that had gripped him every time she walked into danger for one of his jobs, the impossible calculation that keeping her ignorant might keep her safer. Instead, he remained standing, cane balanced between his hands like a barrier. "You left," he said finally. "I left because staying would have destroyed me." Her voice was steady now, matter-of-fact. "I was falling in love with a lie." The words hit him like a physical blow. Falling in love. Past tense. The knife twisted deeper when she didn't look at him as she said it, her gaze fixed on Ptolemy's tail disappearing behind a leather-bound treatise on dimensional theory. "It wasn't all lies." The admission scraped his throat raw. "What we had—that was real." "Was it?" Finally, she looked at him. "How would I know the difference?"
Evaluation details
Result
Evaluator
Details
Meta Data
0.0000%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
8
adverbTagCount
4
adverbTags
0
"he said carefully, watching her face for tells [carefully]"
1
"Instead, he said, [Instead,]"
2
"he said quietly [quietly]"
3
"he said finally [finally]"
72.8507%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1105
totalAiIsmAdverbs
3
found
0
adverb
"carefully"
count
1
1
adverb
"quickly"
count
1
2
adverb
"suddenly"
count
1
highlights
0
"carefully"
1
"quickly"
2
"suddenly"
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)
81.9005%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1105
totalAiIsms
2
found
0
word
"flickered"
count
1
1
word
"jaw clenched"
count
1
highlights
0
"flickered"
1
"jaw clenched"
100.0000%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
1
maxInWindow
1
found
0
label
"jaw/fists clenched"
count
1
highlights
0
"jaw clenched"
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
62
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
0
hedgeCount
2
narrationSentences
62
filterMatches
(empty)
hedgeMatches
0
"seemed to"
1
"seem to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
4
totalSentences
82
matches
0
"chose that moment"
1
"learned that lesson"
2
"business, that the"
3
"like that, Luc"
100.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
36
mean
30.31
std
20.22
cv
0.667
sampleLengths
0
46
1
13
2
98
3
21
4
38
5
53
6
31
7
31
8
44
9
50
10
12
11
14
12
44
13
24
14
42
15
18
16
1
17
60
18
8
19
44
20
28
21
8
22
23
23
10
24
41
25
20
26
12
27
53
28
33
29
12
30
63
31
5
32
22
33
41
34
15
35
13
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
1
totalSentences
62
matches
0
"was gone"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
0
totalVerbs
148
matches
(empty)
89.7901%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
848
adjectiveStacks
1
stackExamples
0
"same—straight black hair"
adverbCount
38
adverbRatio
0.04481132075471698
lyAdverbCount
13
lyAdverbRatio
0.015330188679245283
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
82
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
82
mean
13.3
std
8.8
cv
0.661
sampleLengths
0
35
1
11
2
13
3
19
4
2
5
28
6
28
7
7
8
14
9
16
10
2
11
3
12
9
13
17
14
12
15
24
16
29
17
11
18
11
19
9
20
18
21
6
22
7
23
17
24
27
25
19
26
31
27
12
28
9
29
5
30
14
31
9
32
13
33
8
34
9
35
15
36
5
37
29
38
8
39
12
40
6
41
1
42
9
43
12
44
15
45
24
46
8
47
9
48
14
49
21
70.3252%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
4
diversityRatio
0.45121951219512196
totalSentences
82
uniqueOpeners
37
0.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
8
fancyCount
6
fancyTags
0
"he said carefully, watching her face for tells (say carefully, watch)"
1
"laugh (laugh)"
2
"he said quietly (say quietly)"
3
"he continued, choosing each word like a surgeon selecting instruments (continue, choose like select)"
4
"laughed (laugh)"
5
"he said finally (say finally)"
83.2274%