NC Bench
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Run: 2026-02-17-01KHMQPGM7ER0ES7D83YA53S1T
Run Details
Model:
Gemini 2.5 Flash
Test:
Bad Writing Habits
Scenario:
Horror: alone in an eerie place at night
Duration:
10.7s
Cost:
$0.005349
Provider:
Google AI Studio
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 Fae Grove pressed in, a suffocating closeness in the moonless night. Rory shivered, though the air wasn't cold. It was, rather, still. Too still. Not a whisper of wind stirred the ancient oaks that marked the boundary, their gnarled branches reaching like skeletal fingers against the bruise-purple sky. She clutched the silver chain of the Heartstone Pendant, its deep crimson gem a cold
weight
against her palm. It had pulsed earlier, a distinct warmth against her skin, a steady thrum that drew her here, deeper into Richmond Park than she’d ever dared venture after dark. Her boots sank
slightly
into the damp earth, the crunch of fallen leaves surprisingly loud in the unnatural quiet. Even the usual city hum, a constant backdrop to her London life, had vanished. Here, in this pocket between worlds, only the sound of her own breathing filled the void. And something else. A rustle, not of leaves, but of
silk
, or dry parchment, brushed against her ear. Rory spun, her heart hammering against her ribs. Nothing. Just the impenetrable darkness beneath the tree line. She told herself it was her imagination, frayed nerves after a long day of delivering satay and sweet and sour. But the pendant remained stubbornly cool. It hadn't lit up again. Not yet. She pulled out her phone, the screen a brief, jarring
beacon
in the gloom. No signal. Of course. She pocketed it, the smooth glass a small comfort. She was alone. Or, she should be. The Grove
was meant
to be untouched, a
sanctuary
where wildflowers bloomed year-round, bathed in an
ethereal
light. Tonight, it was a black maw, swallowing any definition. Rory strained her eyes, trying to pierce the gloom. She remembered coming here as a child, on holiday from Cardiff, her parents laughing as she chased butterflies through sun-dappled clearings. Now, the trees seemed taller, more menacing, their trunks dissolving into the inky blackness above. She took a cautious step forward, then another, guided by an instinct she couldn't name. A strange, sweet scent, like honeysuckle and decay, wafted on the air. It made her stomach clench. Her scar, a small crescent on her left wrist from a childhood fall, tingled faintly. Just nerves, she thought, trying to rationalize the irrational. Then she heard it again. A faint scraping, as if something sharp was
being dragged
across stone. It
echoed
in the silence, rising and falling in an uneven rhythm. *Shhhk-shk… shhhk-shk…* It
seemed to
come from deeper within the grove, towards the unseen clearing she sought. Rory forced herself to move, her breath catching in her throat. She had told Eva she
was going
home after her shift. Eva would worry if she knew where Rory
really
was. But the pendant had called her. Had pulsed and warmed and insisted she come, so here she
was, standing
in a place that now felt less like a grove and more like a tomb. The scraping stopped. The silence that followed was even worse. Rory froze, e
very
muscle in her body tensed. She held her breath, listening. The only sound was the frantic thump of her own heart. She felt a prickle of sweat trace a path down her spine. Someone was here. Something was here. A faint light, like the glow of dying embers,
flickered
through the trees ahead. It was a pale, sickly orange, barely illuminating the gnarled trunks and skeletal branches. Rory’s gut screamed at her to turn back, to run, but her feet were already carrying her towards it. The light
seemed to
pulse with the same rhythm as her heart, an
oppressive
, suffocating
throb
. As she drew closer, the light solidified. It wasn’t an ember, but a cluster of them, low to the ground. And then she saw what
was making
the scraping sound. Bones. A scattering of them, bleached white against the dark earth, forming a rough circle around the glowing something. Not animal bones. These were too large, too definite in their structure. A forearm, a rib cage, a partial skull. And in the center of the ring, nestled amongst them, was a pulsating, fleshy orb. It was the source of the orange light, and the unpleasant, sweet scent now intensified, cloying and thick. It looked… alive. And wrong. Rory gagged, clapping a hand over her mouth. Her
blood ran cold
. The orb pulsed, a slow, viscous
throb
, and a thin, high-pitched whine emanated from it, barely audible but vibrating in the
very
air around her. It was the scraping sound she had heard, she realised. Not dragging, but a horrifying, living sound. A sound of something that was not meant to exist. She backed away
slowly
, her eyes fixed on the grotesque display. The orb
seemed to
swell, its light growing brighter, and the shadows around the bones deepened, taking on an impossible depth. The trees themselves
seemed to
lean in, their branches twisting into leering faces. A twig snapped behind her. Rory whirled around, a choked cry escaping her lips. Nothing. Just the
oppressive
darkness, denser now than before. She spun back to the orb, fear paralyzing her. The light was still there, but now, a
flicker
of movement within the
dancing
shadows at the edge of the bone circle. A shape, indistinct and
wavering
,
seemed to
coalesce. Taller than a human. Thinner, too. It was a distortion in the air, a place where the light bent wrong. It had no features she could discern, just an overwhelming sense of wrongness that permeated the air, sucking the oxygen from her lungs. The pendant, still clutched in her hand,
suddenly
flared. Not the gentle warmth it had given earlier, but a
searing
heat that burned against her palm. It pulsed with a desperate, frantic rhythm, the crimson gem glowing with an inner light that fought against the sickly orange of the orb. This was it. This was what the pendant had been warning her against. The form at the edge of the circle shifted, and an arm, impossibly long and spindly, extended from its mass. It wasn't an arm, not
really
. It was a collection of shadows, of deeper darkness, that reached out towards the bones. One by one, the bleached relics
began to
tremble. Rory couldn't breathe. She wanted to scream, but her throat was locked. She wanted to run, but her feet
were rooted
to the spot. Her mind reeled, trying to make sense of the monstrous vision before her. This wasn't Fae. This was something else. Something older. Something darker. The bones
began to
rise, clattering faintly. Not just the ones in the circle. More of them, half-buried in the leaf litter, pushing up from the earth further in the grove, stretching towards the shadowy entity. A
macabre
ballet of the dead. The Heartstone grew hotter,
searing
her flesh. It demanded her attention, not allowing her to fall into the paralyzed stupor of pure terror. Its intense warmth was a grounding force, a reminder of what she had to do. She had to get out. With a superhuman effort, Rory tore her gaze from the rising bones and forced herself to focus on the world around her, on the direction she had come from. She took a stumbling step backward. Another. Her feet found purchase, and she turned, heart hammering, and ran. She ran instinctively, blindly, not daring to look back. The sweet, putrid scent of the orb stung her nostrils, and the high-pitched whine of the scraping sound intensified, now accompanied by a faint, clicking
cacophony
of bones rising from the ground behind her. The trees were a blur, their branches clawing at her face and hair. She stumbled, fell to her knees, scraping her hands on the rough earth. The pendant, still
searing
hot, dug into her palm. She pushed herself up, gasping, and continued to run. She didn't know if she
was running
towards the edge of the grove or deeper into its impossible depths. She just ran, propelled by a primal fear, the distinct feeling of
being hunted
. A new sound reached her ears, a faint, rhythmic *thump-thump-thump*. It was distant, but unmistakably human. Her heart jolted with
a flicker of hope
. Something familiar, something safe. She veered towards the sound, pushing through thorny bushes that snagged at her clothes, leaving small cuts on her exposed skin. The air grew progressively lighter, less
oppressive
. The sickly orange glow
began to
fade. Finally, she burst through a thicket of overgrown shrubs and stumbled onto a paved path. The sound of distant traffic was a
symphony
to her ears. Beyond the old stone wall of the park, she could see the faint glow of streetlights. Rory didn't stop. She ran until her lungs burned and her legs ached, until the cool, damp breath of the Fae Grove was far behind her, replaced by the familiar London night. She didn't look back. Even when she reached the main road, even when she hailed a black cab, she kept her eyes fixed forward, the lingering scent of honeysuckle and decay a phantom on her tongue. The pendant, now merely warm, rested against her chest, a silent witness to the horrors she had just escaped. She
tried to
tell herself it was just a bad dream, a figment of her overactive imagination. But the faint, lingering shk-shk-shk of bones rising from the earth would haunt her sleep for a long, long time.
created_at
"2026-02-17T02:43:42.740303+00:00"
2/17/2026, 2:43:42 AM
model
"google/gemini-2.5-flash"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
496
moderation_latency
(null)
generation_time
10701
tokens_prompt
812
tokens_completion
2321
native_tokens_prompt
773
native_tokens_completion
2047
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
"STOP"
usage
0.0053494
router
(null)
provider_responses
0
status
200
is_byok
false
latency
496
endpoint_id
"16c01e26-9b91-4d22-b487-ed35634b017d"
provider_name
"Google AI Studio"
model_permaslug
"google/gemini-2.5-flash"
api_type
"completions"
id
"gen-1771296211-MKYtJpTv5TnKQpFuvUjl"
upstream_id
(null)
total_cost
0.0053494
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
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)
61.8806%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1574
totalAiIsmAdverbs
6
found
0
adverb
"slightly"
count
1
1
adverb
"slowly"
count
1
2
adverb
"suddenly"
count
1
3
adverb
"really"
count
2
4
adverb
"very"
count
1
highlights
0
"slightly"
1
"slowly"
2
"suddenly"
3
"really"
4
"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
1574
totalAiIsms
22
found
0
word
"ethereal"
count
1
1
word
"cacophony"
count
1
2
word
"symphony"
count
1
3
word
"beacon"
count
1
4
word
"sanctuary"
count
1
5
word
"throb"
count
2
6
word
"searing"
count
3
7
word
"flickered"
count
1
8
word
"flicker"
count
2
9
word
"wavering"
count
1
10
word
"oppressive"
count
3
11
word
"macabre"
count
1
12
word
"silk"
count
1
13
word
"weight"
count
1
14
word
"dancing"
count
1
15
word
"echoed"
count
1
highlights
0
"ethereal"
1
"cacophony"
2
"symphony"
3
"beacon"
4
"sanctuary"
5
"throb"
6
"searing"
7
"flickered"
8
"flicker"
9
"wavering"
10
"oppressive"
11
"macabre"
12
"silk"
13
"weight"
14
"dancing"
15
"echoed"
66.6667%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
2
maxInWindow
2
found
0
label
"blood ran cold"
count
1
1
label
"flicker of emotion"
count
1
highlights
0
"blood ran cold"
1
"a flicker of hope"
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
144
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
0
hedgeCount
9
narrationSentences
144
filterMatches
(empty)
hedgeMatches
0
"seemed to"
1
"began to"
2
"tried to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
0
totalSentences
144
matches
(empty)
100.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
33
mean
47.42
std
24.81
cv
0.523
sampleLengths
0
96
1
52
2
65
3
34
4
72
5
56
6
46
7
66
8
3
9
49
10
63
11
30
12
1
13
76
14
64
15
45
16
5
17
49
18
51
19
63
20
50
21
48
22
42
23
38
24
5
25
47
26
43
27
44
28
33
29
28
30
35
31
42
32
124
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
4
totalSentences
144
matches
0
"was meant"
1
"being dragged"
2
"were rooted"
3
"being hunted"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
4
totalVerbs
260
matches
0
"was going"
1
"was, standing"
2
"was making"
3
"was running"
94.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
1574
adjectiveStacks
1
stackExamples
0
"thin, high-pitched whine"
adverbCount
61
adverbRatio
0.03875476493011436
lyAdverbCount
24
lyAdverbRatio
0.015247776365946633
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
144
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
144
mean
10.87
std
7.21
cv
0.663
sampleLengths
0
12
1
7
2
4
3
2
4
24
5
19
6
28
7
19
8
14
9
16
10
3
11
15
12
8
13
1
14
8
15
20
16
6
17
5
18
2
19
14
20
2
21
2
22
9
23
3
24
4
25
18
26
9
27
9
28
21
29
15
30
15
31
12
32
5
33
15
34
9
35
5
36
12
37
12
38
1
39
16
40
11
41
11
42
10
43
6
44
28
45
3
46
7
47
8
48
5
49
11
38.8889%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
16
diversityRatio
0.2708333333333333
totalSentences
144
uniqueOpeners
39
100.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
0
fancyCount
0
fancyTags
(empty)
85.9668%