NC Bench
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Run: 2026-02-17-01KHMPCCW25FJK19EZGKBCP44H
Run Details
Model:
GPT-4o, May 13th (temp=1)
Test:
Bad Writing Habits
Scenario:
Horror: alone in an eerie place at night
Duration:
18.0s
Cost:
$0.029875
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
The dense canopy of Richmond Park blocked out the last vestiges of moonlight, casting the grove in deep, jagged shadows. Rory, her breath shallow and visible under the sliver of crescent moon, ventured further into the concealed path she had found tucked between two ancient oaks. Her feet left tentative marks in the dew-kissed grass, the only sound for miles the quiet crunching of each step. She tightened her grip on the flashlight, its narrow beam slicing through the dense foliage and illuminating a narrow tunnel of wildflowers, their vibrant petals and lush greenery an anomaly in an otherwise barren season. She’d been here before, years ago as a child. Back then, Isolde’s Grove had seemed less daunting, a
whimsical
retreat where she and Eva pre
tended to
be queens of an ancient realm. It had never felt like this. The air around her hung thick, cloying with a sweetness that turned saccharine in the back of her throat. Her nostrils flared, detecting something rotten beneath that floral mask. She shivered, raising her collar against the chill that
seemed to
creep from the shadows themselves, colder and more invasive than the night air. A silver chain dangled from her neck, its pendant—a heartstone—glowing faintly with an inner crimson light that cast a dim halo onto her chest. Rory swallowed hard, the dry click of her throat the only response to the knot of anxiety coiling tighter inside her. She fumbled for her phone with her free hand and glanced at the time: 11:48 PM. She
was supposed
to meet her benefactor at midnight. A twig snapped behind her. Rory whipped around, the flashlight's beam revealing nothing but undisturbed wilderness. Her heartbeat quickened, drumming a rapid tattoo against her ribcage. She closed her eyes and reminded herself of why she had come. This grove, haunted and lush with Fae lore, held answers. Perhaps even a proper escape from Evan, whose reach
seemed to
stretch even into the fathoms of her fresh start in London. Each step into the grove felt heavier than the last, like wet clay dragging at her ankles. The standing stones that marked the boundary
loomed
ahead, dark and
imposing
, covered in a moss she could swear glistened under the frail light of her torch. Her eye caught movement, something slithering down the side of a stone. A snake, perhaps, but it moved too fluidly, blending into the shadows as though it were part of them. "Rory," a voice whispered—soft, melodic, terrifyingly close. She spun around, heart pounding, the flashlight's beam trembling in her unsteady hand. No one was there. She caught her breath, the heat of fear rising to her cheeks. Rory reached up, brushing her fingers against the heartstone pendant. The faint warmth it emitted was comforting, yet the crimson glow seemed more vibrant now, pulsing in sync with her racing heart. "Focus," she muttered to herself. She steadied her flashlight and continued onward, each step taken with wary precision. As she approached the boundary, the air grew thicker. The forest around her seemed alive, the trees breathing, the shadows pulsating. The standing stones formed a circle around a small clearing, a pocket of alternate reality nestled within the world she knew. The sounds of the night—crickets, distant calls of nocturnal creatures—faded into an
uncanny
silence. It was the kind of quiet that smothered every other noise, a void waiting to swallow her last scream, should it come to that. She stood at the edge of the grove, feeling the mocking fingers of fear
dance
across her skin. And then she saw it. In the center of the clearing, basked in the eerie pale glow that
seemed to
emanate from the earth itself, a figure stood. The figure
was draped
in a hooded cloak, the color shifting subtly with the angles of light, merging with the night like a ghostly chameleon. "Malphora," the figure called her name, its voice a cold breeze caressing the nape of her neck. Rory didn’t recognize the voice, but it felt like it had
been stitched
into her memories, an
echo
from dreams she couldn’t quite recall. She swallowed the lump in her throat and stepped forward. "Who are you?" Rory asked, her voice steady with effort. "Why did you call me here?" The figure raised a hand, pale as moonlight, lowering its hood to reveal a face. Eyes, a
stark
and piercing gray, locked onto her own. "Names are of no consequence here," the figure replied. "What matters
is that you
possess the heartstone. You are destined to unlock the portal." Feeling trapped in a
surreal
dream, Rory held up the heartstone pendant, its light pulsing more
intensely
now. The warmth spread through her chest, dispelling the clammy tendrils of fear creeping under her skin. "What portal?" she urged, taking another step closer to the figure. "Why me?" "Why anyone?" The figure’s lips curled into a smile that
sent a shiver down
her spine. "You are a seeker, Aurora Carter. And seekers always find." The cryptic message only fueled her frustrations. She glanced around, noting the stillness; the world
seemed to
hold its breath in
anticipation
. Rory circled the standing stones, her flashlight casting long, exaggerated shadows on the ground. Movement
flickered
at the edge of her vision—a silhouette darting behind a tree. She turned abruptly, but once again, nothing. "Are you playing games with me?" Rory demanded, voice rising,
echo
ing off the stones around them. The figure’s expression remained placid, but its eyes darkened with an intensity that made Rory take a step back. "The game is long over. This is the reckoning." From the edge of the clearing, a growl—a low, guttural noise that sent prickles of dread up her spine—emerged. Rory's grip tightened on the flashlight as she aimed it toward the sound, in time to glimpse a form—doglike, yet unnervingly wrong—in the periphery of her vision. "Stay back," Rory hissed, though whom she
was warning
, she couldn’t be certain. Her heart pounded, the rhythm merging with the pendant’s pulsing light. She needed answers, needed to understand what she
was meant
to do. Alone, she was vulnerable, but with purpose, she might have a chance. The figure’s patience
seemed to
wane. "Time is a luxury here," it spoke, voice now
tinged
with urgency. "The portal opens, but briefly. Use the heartstone, or be consumed." Taking a deep breath, Rory approached the center of the clearing, holding the heartstone pendant out before her. The warmth now felt like a heartbeat against her palm. Closing her eyes, she willed herself to focus, to drown out the fear and the strange noises that circled around her like a predator. A soft hum
began to
resonate from the heartstone, growing louder, harmonizing with the earth beneath her feet. The pendant’s light intensified, casting a crimson glow around the clearing. She could feel the fabric of reality thinning, a veil
being lifted
. The ground beneath her shoes vibrated as a fissure opened up at her feet, glowing with the same scarlet hue. Then, just at the boundary of her senses, she felt it—a presence, dark and insidious, watching her every move. Rory dared a glance back at the figure, but it
was gone
, leaving her alone with the growing portal and the growling shadows encroaching from all sides. There was no turning back. Rory stepped into the glowing fissure, feeling the pull of worlds beyond. As the portal engulfed her, the growl erupted into a
cacophony
of
otherworldly
shrieks. Just before the light swallowed her
completely
, she heard it again, that whispered name: "Malphora." And then, darkness. Rory blinked against the sudden brightness as she emerged onto the other side—a world reborn from crimson light and ancient whispers. The grove had vanished, replaced by an expanse that felt timeless, filled with a strange familiarity. She was not alone, but for the first time, it felt less like terror and more like purpose. Whatever awaited her here, Rory knew she was ready. She held the heartstone
tightly
, feeling its warmth pulse through her veins, grounding her in this new realm.
created_at
"2026-02-17T02:20:50.158597+00:00"
2/17/2026, 2:20:50 AM
model
"openai/gpt-4o-2024-05-13"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
306
moderation_latency
(null)
generation_time
17853
tokens_prompt
812
tokens_completion
2067
native_tokens_prompt
743
native_tokens_completion
1744
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
0.029875
router
(null)
provider_responses
0
id
"chatcmpl-DA4zPTMfqQdMN0gJqdC1yvNlb6aeK"
status
200
is_byok
false
latency
292
endpoint_id
"3d6584e7-a2bb-48d6-903d-24e3d90e7e55"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-4o-2024-05-13"
api_type
"completions"
id
"gen-1771294831-f1uYDhG0QsxcQieIQ5Qb"
upstream_id
"chatcmpl-DA4zPTMfqQdMN0gJqdC1yvNlb6aeK"
total_cost
0.029875
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
Evaluation details
Result
Evaluator
Details
Meta Data
96.2963%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
9
adverbTagCount
1
adverbTags
0
"a voice whispered—soft, melodic, terrifyingly close [soft, terrifyingly]"
77.9249%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1359
totalAiIsmAdverbs
3
found
0
adverb
"completely"
count
1
1
adverb
"intensely"
count
1
2
adverb
"tightly"
count
1
highlights
0
"completely"
1
"intensely"
2
"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
1359
totalAiIsms
14
found
0
word
"cacophony"
count
1
1
word
"tinged"
count
1
2
word
"flickered"
count
1
3
word
"otherworldly"
count
1
4
word
"surreal"
count
1
5
word
"uncanny"
count
1
6
word
"loomed"
count
1
7
word
"imposing"
count
1
8
word
"whimsical"
count
1
9
word
"stark"
count
1
10
word
"anticipation"
count
1
11
word
"dance"
count
1
12
word
"echo"
count
1
13
word
"echoing"
count
1
highlights
0
"cacophony"
1
"tinged"
2
"flickered"
3
"otherworldly"
4
"surreal"
5
"uncanny"
6
"loomed"
7
"imposing"
8
"whimsical"
9
"stark"
10
"anticipation"
11
"dance"
12
"echo"
13
"echoing"
100.0000%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
1
maxInWindow
1
found
0
label
"sent a shiver through"
count
1
highlights
0
"sent a shiver down"
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
86
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
0
hedgeCount
7
narrationSentences
86
filterMatches
(empty)
hedgeMatches
0
"tended to"
1
"seemed to"
2
"began to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
1
totalSentences
92
matches
0
"is that you"
100.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
29
mean
46.41
std
23.37
cv
0.504
sampleLengths
0
101
1
91
2
70
3
70
4
75
5
7
6
61
7
60
8
56
9
53
10
51
11
16
12
49
13
47
14
26
15
56
16
16
17
28
18
46
19
13
20
35
21
29
22
52
23
61
24
46
25
46
26
3
27
55
28
27
86.8217%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
6
totalSentences
86
matches
0
"was supposed"
1
"was draped"
2
"been stitched"
3
"was meant"
4
"being lifted"
5
"was gone"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
1
totalVerbs
210
matches
0
"was warning"
100.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
1276
adjectiveStacks
0
stackExamples
(empty)
adverbCount
41
adverbRatio
0.03213166144200627
lyAdverbCount
15
lyAdverbRatio
0.011755485893416929
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
92
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
92
mean
14.63
std
6.5
cv
0.445
sampleLengths
0
20
1
26
2
20
3
35
4
9
5
23
6
6
7
19
8
10
9
24
10
24
11
21
12
16
13
9
14
5
15
11
16
10
17
12
18
10
19
22
20
17
21
27
22
12
23
19
24
7
25
13
26
4
27
12
28
10
29
22
30
5
31
13
32
9
33
12
34
21
35
14
36
24
37
18
38
5
39
23
40
25
41
17
42
24
43
10
44
10
45
6
46
15
47
10
48
9
49
15
56.8841%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
6
diversityRatio
0.3804347826086957
totalSentences
92
uniqueOpeners
35
0.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
9
fancyCount
7
fancyTags
0
"a voice whispered—soft, melodic, terrifyingly close (whisper—soft)"
1
"she muttered to herself (mutter)"
2
"the figure called her name, its voice a cold breeze caressing the nape of her neck (call caress)"
3
"urged (urge)"
4
"demanded (demand)"
5
"Rory hissed, though whom she was warning, she couldn’t be certain (hiss, warn, does not be)"
6
"it spoke, voice now tinged with urgency (speak, tinged)"
83.4075%