NC Bench
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Run: 2026-02-17-01KHMPADVWDSH1V4XVAFKC4KXJ
Run Details
Model:
GPT-4o, Aug. 6th (temp=0)
Test:
Bad Writing Habits
Scenario:
Romance: separated couple reunites
Duration:
20.6s
Cost:
$0.012625
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="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 door to Eva's flat swung open with a creak, revealing Aurora Carter standing on the threshold, her bright blue eyes wide with surprise. She hadn't expected to see him here, not after all this time. Lucien Moreau leaned casually against the doorframe, his heterochromatic eyes — one amber, one black — studying her with an inscrutable expression. The dim light from the hallway cast shadows across his tailored charcoal suit, highlighting the sharp angles of his face. "Rory," he said, his voice smooth and accented, a hint of amusement playing at the corners of his lips. "It's been a while." Aurora's heart skipped a beat, a familiar mix of attraction and irritation bubbling up inside her. She hadn't seen Lucien since that night at Silas' bar, when words had
been exchanged
that neither could take back. She had left in a storm of emotions, vowing not to look back. Yet here he was, as if summoned by some
unspoken
need. "Lucien," she replied, her voice steady despite the turmoil within. "What are you doing here?" He straightened, the ivory-handled cane in his hand tapping
lightly
against the floor. "Eva asked me to check on Ptolemy while she's away. I didn't expect to find you here." Aurora stepped inside, closing the door behind her with a soft click. The familiar scent of curry from the restaurant below mingled with the musty aroma of old books, creating a comforting, if chaotic, atmosphere. Ptolemy, the tabby cat, lounged on a pile of scrolls, watching them with lazy interest. "I needed a place to think," Aurora admitted, glancing around at the cluttered flat. Books and papers
were strewn
across every available surface, a
testament
to Eva's insatiable curiosity. "Eva said I could use her place while she's gone." Lucien nodded, his gaze never leaving her face. "And have you found what you were looking for?" Aurora hesitated, the
weight
of their shared history pressing down on her. "Not yet," she said finally, meeting his eyes. "But I'm working on it." He smiled, a slow, knowing smile that
sent a shiver down
her spine. "You always were persistent." Silence stretched between them, filled with the
unspoken
words and unresolved tension that had lingered since their last encounter. Aurora crossed her arms, trying to shield herself from the memories that threatened to overwhelm her. "Why did you
really
come here, Lucien?" she asked, her voice
barely above a whisper
. He took a step closer, the air between them charged with an electric intensity. "I could ask you the same thing, Rory. Why hide away in Eva's flat when you have your own place?" Aurora looked away, her gaze falling on Ptolemy, who had begun to groom himself with a nonchalance that belied the tension in the room. "I needed space," she said, her voice tight. "Space to figure things out." Lucien's expression softened, a
flicker
of something vulnerable passing through his eyes. "And have you?" She shook her head, the truth of it settling heavily in her chest. "No. Not yet." He reached out, his fingers brushing against her arm, the contact sending a jolt of warmth through her. "Rory, I—" The words
hung in the air
, unfinished, as if he couldn't quite bring himself to say them. Aurora looked up, meeting his gaze, and for a moment, the world
seemed to
fall away, leaving only the two of them and the tangled web of emotions that bound them together. "Lucien," she began, her voice trembling with the
weight
of everything she wanted to say. "I—" But before she could continue, Ptolemy leapt from his perch, landing gracefully between them with a soft meow. The spell was broken, and Aurora stepped back, her heart pounding in her chest. Lucien chuckled, a low, rich sound that sent a thrill through her. "It seems Ptolemy has decided to play chaperone." Aurora managed a smile, though her heart ached with the things left unsaid. "He's always been good at that." They stood in silence for a moment, the only sound the soft rustle of Ptolemy's fur as he rubbed against their legs. Aurora took a deep breath, trying to steady herself. "Lucien, I—" she began again, but the words wouldn't come. Instead, she reached out, her fingers brushing against his, a tentative connection that spoke of hope and possibility. He squeezed her hand
gently
, his eyes searching hers. "Rory, whatever it is, we'll figure it out. Together." The promise in his words wrapped around her like a warm embrace, and for the first time in a long while, Aurora felt
a glimmer of hope
. Perhaps, she thought, they could find a way forward, despite the past that lay between them. As they stood there, hand in hand, Ptolemy weaving around their feet, Aurora
knew that whatever
happened next, they would face it together. And maybe, just maybe, that was enough.
created_at
"2026-02-17T02:19:48.188652+00:00"
2/17/2026, 2:19:48 AM
model
"openai/gpt-4o-2024-08-06"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
508
moderation_latency
(null)
generation_time
19467
tokens_prompt
808
tokens_completion
1232
native_tokens_prompt
754
native_tokens_completion
1074
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
0.012625
router
(null)
provider_responses
0
id
"chatcmpl-DA4yNLjqkRjKfAs22tzZzbwZBCtPV"
status
200
is_byok
false
latency
488
endpoint_id
"9d15935a-34e6-4a5e-a5bc-c7dda213e876"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-4o-2024-08-06"
api_type
"completions"
id
"gen-1771294767-NjmIRqRZxAfcwMzcsbmb"
upstream_id
"chatcmpl-DA4yNLjqkRjKfAs22tzZzbwZBCtPV"
total_cost
0.012625
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
Evaluation details
Result
Evaluator
Details
Meta Data
38.0952%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
7
adverbTagCount
2
adverbTags
0
"Aurora admitted, glancing around at the cluttered flat [around]"
1
"she said finally, meeting his eyes [finally]"
50.6782%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
811
totalAiIsmAdverbs
4
found
0
adverb
"gently"
count
1
1
adverb
"lightly"
count
1
2
adverb
"barely above a whisper"
count
1
3
adverb
"really"
count
1
highlights
0
"gently"
1
"lightly"
2
"barely above a whisper"
3
"really"
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)
26.0173%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
811
totalAiIsms
6
found
0
word
"testament"
count
1
1
word
"flicker"
count
1
2
word
"unspoken"
count
2
3
word
"weight"
count
2
highlights
0
"testament"
1
"flicker"
2
"unspoken"
3
"weight"
33.3333%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
3
maxInWindow
3
found
0
label
"hung in the air"
count
1
1
label
"sent a shiver through"
count
1
2
label
"flicker of emotion"
count
1
highlights
0
"hung in the air"
1
"sent a shiver down"
2
"a glimmer of hope"
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
45
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
0
hedgeCount
1
narrationSentences
45
filterMatches
(empty)
hedgeMatches
0
"seemed to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
2
totalSentences
61
matches
0
"exchanged that neither"
1
"knew that whatever"
100.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
27
mean
30.07
std
15.22
cv
0.506
sampleLengths
0
78
1
23
2
60
3
15
4
30
5
50
6
39
7
17
8
25
9
17
10
35
11
15
12
34
13
37
14
15
15
16
16
20
17
49
18
16
19
32
20
20
21
19
22
31
23
28
24
18
25
43
26
30
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
2
totalSentences
45
matches
0
"been exchanged"
1
"were strewn"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
0
totalVerbs
110
matches
(empty)
100.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
677
adjectiveStacks
0
stackExamples
(empty)
adverbCount
23
adverbRatio
0.033973412112259974
lyAdverbCount
9
lyAdverbRatio
0.013293943870014771
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
61
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
61
mean
13.31
std
6.57
cv
0.493
sampleLengths
0
24
1
12
2
22
3
20
4
19
5
4
6
16
7
20
8
13
9
11
10
10
11
5
12
13
13
17
14
12
15
23
16
15
17
14
18
15
19
10
20
8
21
9
22
12
23
8
24
5
25
13
26
4
27
19
28
16
29
15
30
14
31
20
32
24
33
8
34
5
35
12
36
3
37
13
38
3
39
18
40
2
41
17
42
32
43
15
44
1
45
18
46
14
47
12
48
8
49
13
66.6667%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
1
diversityRatio
0.4098360655737705
totalSentences
61
uniqueOpeners
25
32.1429%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
7
fancyCount
4
fancyTags
0
"he said, his voice smooth and accented, a hint of amusement playing at the corners of his lips (say, accent)"
1
"Aurora admitted, glancing around at the cluttered flat (admit, glance around)"
2
"she said finally, meeting his eyes (say finally, meet)"
3
"she began, her voice trembling with the weight of everything she wanted to say (begin, tremble want say)"
79.2314%