NC Bench
Overview
About
Tests
Models
Vendors
Run: 2026-02-17-01KHMQFDV9S677K5RJHR33ZQWB
Run Details
Model:
GPT-4.1 Nano
Test:
Bad Writing Habits
Scenario:
Horror: alone in an eerie place at night
Duration:
10.8s
Cost:
$0.000604
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> <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 Carter had always thought Richmond Park’s silence was something peaceful, something she could ground herself in after the chaos of her day. The night, however, pressed in differently tonight. No breeze, no whisper of leaves—just a heavy stillness that clung to her skin as she pushed past the ancient oak standing stones, the boundary into the Fae Grove. She told herself it was motivation, curiosity, that rare kind of reckless which had gotten her through more than one mess before. But beneath the surface, her skin prickled with an unfamiliar warning. The moon hung low, fat and silver, casting uneven patches of light through the towering canopy. Wildflowers bobbed in the absence of wind, their petals dark and unmoving where their colors should have
shimmered
. The Grove’s space folded inward—more than just trees and clearing; it felt like a pocket of time, an anomaly that borrowed the night’s quiet and stretched it out. Aurora’s boots crunched
softly
on the leaf-strewn ground, her breath steady, her pulse beneath her ribs. She clutched the Heartstone Pendant in her palm—a faint pulse of warmth thrumming through her fingertips as it responded to the faint rays of the nearby Hel portal. She’d
been told
not to linger long, but she’d come for something. Something she couldn’t quite name, but trusted instinct to guide her. The shadows
flickered
at the edge of her vision, moving—just a
flicker
, a dart of darkness slipping behind a trunk, a sudden shift of something just out of reach. Her eyes
flicked
toward the shadows, a
flicker
of unease tightening her throat. She told herself it was shadows playing tricks, yet the strange silence pressed down harder, as if the
very
air
was holding
its breath. Her feet slowed. She turned her head, trying to pin down what felt wrong. It wasn’t just her nerves—though her heart hammered a little faster—something about the Grove had changed, subtly but undeniably. The wildflowers should have been shimmering now, even in the dimness, but they appeared dull, darkened, as if drained of life. A noise—soft and deliberate—settled behind her. She spun, rapid but cautious, eyes sharp. Nothing. Just the quiet rustle of leaves. Her hand brushed the pendant instinctively, feeling its familiar warmth. She was here for a reason—something about the pulse, about the faint glow she couldn’t fully understand. But now doubt rooted itself deeper, a cold thing that slipped into her bones. She took a step back, her gaze sweeping the shadows. A
flicker
of movement caught her eye again—something gray and indistinct, darting at the corner of her vision, gone before she could focus on it. Her breath caught. She told herself she was imagining it, that her mind was filling in the blanks in this moonlit ghost story she’d wandered into. But her skin crawled regardless. The Grove’s quiet grew
oppressive
, like a
weight
she couldn’t shrug off. The wildflowers
seemed to
veer away from her, petals curling inward as if retreating from an unseen predator. Her eyes darted from one shadow to another, faster now, each movement too quick for her to pin down, yet persistent enough to leave a lingering sense of dread. The trees around her leaned closer, their branches whispering—an unintelligible whisper that stabbed at her senses, making her stomach tighten. She took another step backward, then froze. A faint, almost imperceptible glow—like the pulse of an unseen heartbeat—began emanating from the depths of the Grove. Her logical mind offered no explanation; a part of her instinct screamed to get out. Still, she couldn’t. Not yet.
A shiver ran down her spine
, not from fear alone but from a prickling awareness that something
was waiting
—and perhaps had been for a long, long time. A rustle. Just behind her now. Slow, deliberate. Not animal, not wind. A pattern, a rhythm. Her eyes snapped around, searching, hairs on her arms standing upright. She tightened her grip on the pendant. Its warmth felt like a reassurance, but even that comfort was fragile against the
oppressive
silence. Then, she saw it. A
flicker
at the corner of her vision—nothing concrete, just a
flicker
like the image of blood shimmering in moonlight. She blinked, and it
was gone
. The shadows danced again, not
flicker
ing, but swirling
slightly
, as if the darkness was alive, breathing. Her mind
tried to
convince her to turn away, to flee. But her feet refused to move, rooted by something unseen, something ancient. She steadied herself, breath shallow, gaze fixed on the darkening expanse. Her fingers tangled around the chain of the Heartstone Pendant, squeezing tight to anchor herself. The wildflowers, usually resilient, now shriveled rapidly, wilting in unnatural silence. The clearing grew darker, the faint glow more pronounced. It pulsed in rhythm—closer, steadier—like a heartbeat she could feel vibrating in her bones. A shadow detached itself, slow and deliberate, from behind a tall, twisted tree. Aurora’s
eyes widened
. It had no form, not quite—just a darkness shaped by motion, rippling with the faint glow of some unseen core. Its presence was enormous, yet it moved with a stalking grace, as if it had been waiting for her to arrive. A coldness spread through her chest, her breath catching in her throat. She knew—somewhere deep in her gut—that this was no longer a place of mere trees and flowers. Something else had seeped in, slipped into her
sanctuary
, and it
was watching
her. A whisper brushed her mind—soft, like the wind’s ghostly version, whispering her name in a voice she almost recognized. She
trembled
, not from fear only, but from the realization that her search had twisted her into this moment—the thread pulled tight, and the fabric of her world starting to
unravel
. She dared to take a step back, but the shadows surged forward, curling like smoke, swallowing the space between her and the darkness. The pulse from the Heartstone grew restless, the faint glow intensifying,
flicker
ing wildly. And
suddenly
, the Grove
seemed to
breathe—a slow, horrifying inhale—and she understood this wasn’t just a quiet, isolated night. This was the moment the Grove had been waiting for. She was not alone.
created_at
"2026-02-17T02:39:51.141176+00:00"
2/17/2026, 2:39:51 AM
model
"openai/gpt-4.1-nano-2025-04-14"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
417
moderation_latency
(null)
generation_time
10678
tokens_prompt
812
tokens_completion
1604
native_tokens_prompt
743
native_tokens_completion
1325
native_tokens_completion_images
0
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
"completed"
usage
0.0006043
router
(null)
provider_responses
0
id
"resp_0adf48372e2ac408016993d4eb75cc8190bae9e560cfdaa196"
status
200
is_byok
false
latency
143
endpoint_id
"9251cee5-5503-4be9-9439-7ae21ff062a3"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-4.1-nano-2025-04-14"
api_type
"completions"
id
"gen-1771295979-RMQnyYpUPz5ghWb1O15I"
upstream_id
"resp_0adf48372e2ac408016993d4eb75cc8190bae9e560cfdaa196"
total_cost
0.0006043
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
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)
61.5385%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1040
totalAiIsmAdverbs
4
found
0
adverb
"slightly"
count
1
1
adverb
"softly"
count
1
2
adverb
"suddenly"
count
1
3
adverb
"very"
count
1
highlights
0
"slightly"
1
"softly"
2
"suddenly"
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
1040
totalAiIsms
14
found
0
word
"sanctuary"
count
1
1
word
"flickered"
count
1
2
word
"flicker"
count
5
3
word
"flicked"
count
1
4
word
"shimmered"
count
1
5
word
"trembled"
count
1
6
word
"oppressive"
count
2
7
word
"weight"
count
1
8
word
"unravel"
count
1
highlights
0
"sanctuary"
1
"flickered"
2
"flicker"
3
"flicked"
4
"shimmered"
5
"trembled"
6
"oppressive"
7
"weight"
8
"unravel"
66.6667%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
2
maxInWindow
2
found
0
label
"shiver down spine"
count
1
1
label
"eyes widened/narrowed"
count
1
highlights
0
"A shiver ran down her spine"
1
"eyes widened"
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
74
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
0
hedgeCount
3
narrationSentences
74
filterMatches
(empty)
hedgeMatches
0
"seemed to"
1
"tried to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
0
totalSentences
74
matches
(empty)
64.8603%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
20
mean
50.85
std
19.17
cv
0.377
sampleLengths
0
92
1
62
2
67
3
66
4
54
5
61
6
66
7
79
8
45
9
27
10
50
11
46
12
49
13
34
14
57
15
43
16
50
17
36
18
29
19
4
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
2
totalSentences
74
matches
0
"been told"
1
"was gone"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
5
totalVerbs
167
matches
0
"was holding"
1
"was imagining was filling"
2
"was waiting"
3
"was watching"
86.9327%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
1040
adjectiveStacks
1
stackExamples
0
"deliberate—settled behind her."
adverbCount
50
adverbRatio
0.04807692307692308
lyAdverbCount
14
lyAdverbRatio
0.013461538461538462
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
74
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
74
mean
13.74
std
7.9
cv
0.575
sampleLengths
0
23
1
7
2
29
3
22
4
11
5
16
6
18
7
28
8
16
9
28
10
12
11
11
12
29
13
13
14
24
15
3
16
11
17
19
18
21
19
6
20
7
21
1
22
6
23
10
24
17
25
14
26
10
27
25
28
3
29
23
30
5
31
12
32
18
33
29
34
20
35
7
36
18
37
15
38
3
39
2
40
27
41
2
42
4
43
2
44
4
45
4
46
11
47
7
48
16
49
4
43.2432%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
5
diversityRatio
0.25675675675675674
totalSentences
74
uniqueOpeners
19
100.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
0
fancyCount
0
fancyTags
(empty)
83.7201%