NC Bench
Overview
About
Tests
Models
Vendors
Run: 2026-02-17-01KHMMH2M7QHEWYDNM2KMXXRSC
Run Details
Model:
Claude 3 Haiku
Test:
Bad Writing Habits
Scenario:
Horror: alone in an eerie place at night
Duration:
19.1s
Cost:
$0.002230
Provider:
Amazon Bedrock
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 twisted oak branches overhead blotted out the moonlight, casting the Fae Grove in a deep, impenetrable darkness. Aurora shivered, the silver chain of the Heartstone pendant clutched
tightly
in her palm as she picked her way
carefully
along the overgrown path.
The air was thick with
the cloying scent of wildflowers, far too sweet and cloying for this hour. Rory's boots crunched over leaf litter, the only sound breaking the eerie silence that hung heavy all around her. Even the usual chorus of nocturnal forest sounds – the chirping of crickets, the hooting of owls – was absent, leaving an unsettling void. Rory paused, straining to hear anything beyond the pounding of her own heartbeat. Her pulse
throbbed
in her ears, the Heartstone pulsing faintly in time with each rapid beat. She had a queasy
feeling that she
was
being watched
, some unseen presence lurking just out of sight. Shaking off the paranoia, Rory pressed on, one hand trailing along the rough bark of the ancient oaks, guiding her way through the pitch black. She couldn't quite shake the sensation of eyes boring into the back of her neck. She quickened her pace, breath coming in short, panicked gasps. The grove
seemed to
stretch on endlessly, the path twisting and turning with no discernible pattern. Rory was hopelessly disoriented, lost in the tangled web of trees. Her fingers brushed against the standing stones that marked the boundary, the ancient carvings worn smooth with time. She hesitated, wondering if she should turn back, but a stubborn determination propelled her forward. The crunch of leaves underfoot abruptly ceased as Rory stepped into the small, moonlit clearing. Shadows
loomed
all around her, dark shapes that shifted and writhed at the periphery of her vision, just out of focus. Rory swallowed hard, forcing herself to hold her ground, one hand
clenching
the Heartstone. A faint rustling from the trees drew her gaze upwards, and she stifled a gasp. Perched on the highest branches were dozens of beady black eyes,
glinting
in the gloom. Huge, bat-like wings unfurled, and Rory caught a glimpse of sharp talons and fangs as the creatures launched themselves into the air with bone-chilling screeches. Rory stumbled backwards, heart pounding as the creatures swarmed around her, circling overhead. She counted at least a dozen, their shadowy forms blotting out the stars. The air was
suddenly
alive with the
cacophony
of their shrill cries, an eerie, discordant chorus that set Rory's nerves on edge. She darted towards the standing stones, fumbling to pull the Heartstone free of its chain. The pendant glowed faintly, pulsing in time with her racing heart. Rory pressed it against the ancient carvings, half-remembered words of power spilling from her lips. The stones
began to
hum, the vibrations reverberating through the clearing. The creatures let out a collective shriek and scattered, vanishing back into the inky blackness of the trees. Rory let out a shaky breath, sinking to her knees as the adrenaline faded. She stared down at the glowing Heartstone, its crimson light casting an
ethereal
glow across her face. A rustling from the edge of the clearing shattered the momentary calm, and Rory's head snapped up, heart racing anew. She scrambled to her feet, clutching the pendant protectively as a dark silhouette emerged from the shadows. It was humanoid in shape, but moved with a strange, liquid grace that was unnatural. Rory watched, transfixed, as it approached, its features
slowly
coming into focus. She felt her breath catch in her throat as it stepped into the moonlight, revealing a face that was at once familiar and alien. The creature - for it could not be
truly
human - had coal-black eyes that gleamed with a hungry intelligence. Its skin was ashen and mottled, crisscrossed with veins that pulsed with an unnatural light. A gaping maw filled with razor-sharp teeth stretched in a ghastly parody of a smile, and Rory shuddered at the sight. "What are you?" she whispered, voice trembling. The creature tilted its head, regarding her with an unsettling intensity. "I am many things, child of the Fae. I am the whisper in the dark, the shadow that haunts your steps. I am the fear that grips your heart in the dead of night." It took a step closer, and Rory instinctively retreated, the Heartstone pendant burning against her palm. "What do you want from me?" The creature let out a low, keening laugh that sent shivers down Rory's spine. "Your kind have always sought to control what they do not understand. The Fae, the Hel - you think to harness their power for your own gain. But you are but specks in the grand design, insignificant playthings in a game you cannot hope to comprehend." It moved with blinding speed, closing the distance between them
in the blink of an eye
. Rory barely had time to react before a clawed hand wrapped around her throat, cutting off her air. She clawed at the creature's unyielding grip, the Heartstone slipping from her grasp as her vision
began to
dim. "You have something I want, little human," the creature hissed, its fetid breath washing over Rory's face. "And I will take it, whether you submit or not." Rory's vision blurred, the world narrowing to a pinprick as darkness encroached. She could feel the power of the Heartstone slipping away, the warm glow fading. With her last ounce of strength, she thrust her hand forward, fingers closing around the pendant. The creature let out an unearthly shriek as the crimson light flared to life, burning its flesh. It recoiled, grip loosening, and Rory gulped down desperate mouthfuls of air. She scrambled backwards, cradling the Heartstone against her chest as the creature thrashed and howled in agony. Snarling, it lunged forward, but Rory pressed the pendant against the standing stones once more, reciting the words of power. The stones glowed with blinding intensity, and the creature let out a bone-chilling wail as it
was repelled
, its form dissolving into black smoke that was swiftly consumed by the light. Rory stood there, trembling, as the clearing fell silent once more. The Heartstone pulsed feebly in her hand, its light
slowly
fading. She stared down at it,
a sense of dread
coiling in the pit of her stomach. Whatever that thing was, it was only the beginning. And she had a feeling her troubles were far from over.
created_at
"2026-02-17T01:48:27.309251+00:00"
2/17/2026, 1:48:27 AM
model
"anthropic/claude-3-haiku"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
316
moderation_latency
259
generation_time
18662
tokens_prompt
812
tokens_completion
1632
native_tokens_prompt
838
native_tokens_completion
1616
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
0.0022295
router
(null)
provider_responses
0
id
"59b3b56a-687e-4c68-8811-44aec3800040"
status
200
is_byok
false
latency
313
endpoint_id
"401c6f0f-caeb-4c84-92b7-e163dbccf7c2"
provider_name
"Amazon Bedrock"
model_permaslug
"anthropic/claude-3-haiku"
api_type
"completions"
id
"gen-1771292887-XHzGtgr72zWZcVqX7Fkx"
upstream_id
"59b3b56a-687e-4c68-8811-44aec3800040"
total_cost
0.0022295
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Amazon Bedrock"
Evaluation details
Result
Evaluator
Details
Meta Data
100.0000%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
2
adverbTagCount
0
adverbTags
(empty)
44.0299%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1072
totalAiIsmAdverbs
6
found
0
adverb
"carefully"
count
1
1
adverb
"slowly"
count
2
2
adverb
"suddenly"
count
1
3
adverb
"tightly"
count
1
4
adverb
"truly"
count
1
highlights
0
"carefully"
1
"slowly"
2
"suddenly"
3
"tightly"
4
"truly"
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)
44.0299%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1072
totalAiIsms
6
found
0
word
"ethereal"
count
1
1
word
"cacophony"
count
1
2
word
"throbbed"
count
1
3
word
"glinting"
count
1
4
word
"loomed"
count
1
5
word
"clenching"
count
1
highlights
0
"ethereal"
1
"cacophony"
2
"throbbed"
3
"glinting"
4
"loomed"
5
"clenching"
66.6667%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
3
maxInWindow
2
found
0
label
"sense of foreboding"
count
1
1
label
"air was thick with"
count
1
2
label
"blink of an eye"
count
1
highlights
0
"a sense of dread"
1
"The air was thick with"
2
"in the blink of an eye"
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
1
narrationSentences
60
matches
0
"a sense of dread"
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
0
hedgeCount
3
narrationSentences
60
filterMatches
(empty)
hedgeMatches
0
"seemed to"
1
"began to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
1
totalSentences
64
matches
0
"feeling that she"
34.5929%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
23
mean
46.61
std
12.63
cv
0.271
sampleLengths
0
45
1
61
2
47
3
50
4
60
5
50
6
55
7
48
8
52
9
49
10
37
11
51
12
56
13
7
14
45
15
22
16
60
17
53
18
27
19
42
20
46
21
51
22
58
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
2
totalSentences
60
matches
0
"being watched"
1
"was repelled"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
0
totalVerbs
170
matches
(empty)
99.4312%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
967
adjectiveStacks
0
stackExamples
(empty)
adverbCount
38
adverbRatio
0.03929679420889348
lyAdverbCount
20
lyAdverbRatio
0.020682523267838676
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
64
echoCount
0
echoWords
(empty)
90.6206%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
64
mean
16.75
std
6.31
cv
0.377
sampleLengths
0
21
1
24
2
18
3
19
4
24
5
13
6
16
7
18
8
25
9
15
10
10
11
16
12
11
13
18
14
15
15
15
16
21
17
14
18
15
19
15
20
25
21
13
22
13
23
22
24
15
25
11
26
15
27
11
28
18
29
14
30
17
31
20
32
17
33
15
34
12
35
24
36
20
37
15
38
21
39
7
40
11
41
34
42
16
43
6
44
14
45
46
46
16
47
18
48
19
49
17
51.5625%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
2
diversityRatio
0.328125
totalSentences
64
uniqueOpeners
21
0.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
2
fancyCount
2
fancyTags
0
"whispered (whisper)"
1
"the creature hissed, its fetid breath washing over Rory's face (hiss)"
78.2902%