NC Bench
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Run: 2026-02-19-01KHTQVZR8ZSFPXCEBF5S8CC4T
Run Details
Model:
Claude 3 Haiku
Test:
Bad Writing Habits
Scenario:
Horror: alone in an eerie place at night
Duration:
22.4s
Cost:
$0.002154
Provider:
Amazon Bedrock
Evaluation summary
Score
Evaluator
Details Link
100.00%
Adverbs in dialogue tags
(details)
69.36%
AI-ism adverb frequency
(details)
100.00%
AI-ism character names
(details)
100.00%
AI-ism location names
(details)
0.00%
AI-ism word frequency
(details)
100.00%
Cliché density
(details)
100.00%
Emotion telling (show vs. tell)
(details)
83.95%
Filter word density
(details)
100.00%
Gibberish response detection
(details)
100.00%
Markdown formatting overuse
(details)
41.67%
Missing dialogue indicators (quotation marks)
(details)
52.36%
Name drop frequency
(details)
100.00%
Narrator intent-glossing
(details)
100.00%
"Not X but Y" pattern overuse
(details)
100.00%
Overuse of "that" (subordinate clause padding)
(details)
27.06%
Paragraph length variance
(details)
100.00%
Passive voice overuse
(details)
100.00%
Past progressive (was/were + -ing) overuse
(details)
100.00%
Em-dash & semicolon overuse
(details)
100.00%
Purple prose (modifier overload)
(details)
100.00%
Repeated phrase echo
(details)
100.00%
Sentence length variance
(details)
56.12%
Sentence opener variety
(details)
100.00%
Adverb-first sentence starts
(details)
100.00%
Pronoun-first sentence starts
(details)
54.74%
Subject-first sentence starts
(details)
0.00%
Subordinate conjunction sentence starts
(details)
100.00%
Technical jargon density
(details)
0.00%
Useless dialogue additions
(details)
0.00%
Dialogue tag variety (said vs. fancy)
(details)
76.1751%
Overall
Model input
System
You are an expert fiction writer. Always keep the following rules in mind: - Write in past tense and use General English spelling, grammar, and colloquialisms/slang. - Write in active voice - Always follow the "show, don't tell" principle. - Avoid adverbs and cliches and overused/commonly used phrases. Aim for fresh and original descriptions. - Convey events and story through dialogue. - Mix short, punchy sentences with long, descriptive ones. Drop fill words to add variety. - Skip "he/she said said" dialogue tags and convey people's actions or face expressions through their speech - Avoid mushy dialog and descriptions, have dialogue always continue the action, never stall or add unnecessary fluff. Vary the descriptions to not repeat yourself. - Put dialogue on its own paragraph to separate scene and action. - Reduce indicators of uncertainty like "trying" or "maybe" When writing text: - NEVER conclude the scene on your own, follow the beat instructions very closely. - NEVER end with foreshadowing. - NEVER write further than what I prompt you with. - AVOID imagining possible endings, NEVER deviate from the instructions. - STOP EARLY if the continuation contains what was required in the instructions. You do not need to fill out the full amount of words possible.
User/Human
Take into account the following glossary of characters/locations/items/lore... when writing your response: <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> Continue the story using the following instructions: <instructions> 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. </instructions>
Model response
Messages
Meta
AI
The thick canopy of ancient
oaks blotted out the night sky, casting the Fae Grove in a deep, eerie twilight. Aurora tugged her jacket tighter, her breath fogging the chilly air as she made her way along the winding dirt path.
The Heartstone pendant at her
throat
pulsed
faintly, a steady
warmth
against her skin. She shouldn't be here.
Something had called her, a
pull she couldn't deny, but the wrongness of this place settled heavy in her bones. The grove felt alive, watching, waiting.
Aurora quickened her pace, boots
crunching on the fallen leaves. Overhead, the bare branches creaked and rustled, as if the trees themselves
were whispering
. A twig snapped. Aurora froze, heart
pounding
.
She strained to hear over
the rush of blood in her ears, but the forest had fallen silent, save for the distant hooting of an owl.
Slowly, she turned, scanning the
gloom
. Nothing moved.
Just shadows and the towering
silhouettes of the oaks.
Cautiously, she continued on, senses
on high alert.
The grove seemed to close
in around her, the trees pressing in.
She could feel their eyes
on her back. Glancing over her shoulder, she caught a
flicker
of movement, just at the edge of her vision.
Aurora spun, heart in her
throat, but the forest was still.
She shook her head, telling
herself it was her imagination. Taking a deep breath, she pushed forward.
The ancient standing stones materialized
out of the darkness, worn and weathered.
Aurora paused, staring up at
them.
They seemed to loom, ominous
and
foreboding
.
A faint rustling drifted to
her ears.
She whirled, hand going to
the Heartstone.
It glowed softly, pulsing with
an inner light. Aurora peered into the shadows, searching. There, a
flicker
of movement. She took a step forward, squinting, trying to make out what it was. A branch snapped. Aurora jumped, swinging around. Something darted between the trees, just out of sight. Her
stomach
twisted with dread. Adrenaline spiking, she broke into a sprint,
racing
towards the center of the grove. The standing stones
loomed
before her, the Heartstone burning hot against her skin. She skidded to a halt, chest heaving, eyes darting. The grove was eerily silent, save for the
pounding
of her heart. She strained to hear anything, any sign of pursuit, but there was nothing.
Slowly, Aurora turned, scanning the
area. The shadows
seemed to
shift and swell, as if the
very
darkness were alive. She took a step back, the Heartstone's
warmth
her only comfort. A twig snapped.
She whirled, but the forest
remained still, mocking her. Faint whispers drifted on the breeze, too soft to make out. Aurora's skin prickled, the hairs on the back of her neck rising. She was not alone. Gripping the Heartstone, she called out, voice shaking. "Who's there?" Silence. The whispers faded, swallowed by the
oppressive
quiet. Aurora's throat tightened, panic rising.
She backed towards the center
of the grove, eyes darting, searching for any sign of movement. A low, guttural growl rumbled through the trees. Aurora froze, blood turning to ice.
Slowly, she turned, every muscle
tensed. A pair of glowing yellow eyes emerged from the shadows, reflecting the faint light of the Heartstone. Aurora's breath caught in her throat as a massive, shadowy form materialized, stalking towards her. She stumbled back, heart
pounding
. The creature moved with a preternatural grace, its limbs twisted and inhuman. Aurora's mind
raced
, struggling to process what she
was seeing
. "What are you?"
she whispered, voice trembling
. The creature let out a bone-
chilling
howl, its jaws gaping wide. Aurora turned and ran, feet
pounding
the soft earth. The Heartstone burned hot against her skin, the grove's wrongness pressing in.
She could hear the creature's
pursuit, its guttural snarls
echoing
through the trees. Branches whipped at her face as she ran, the grove twisting and turning around her.
She had no sense of
direction, only the instinct to flee. The Heartstone
throbbed
, its
warmth
a
beacon
in the darkness. A sharp pain lanced through her leg, and Aurora cried out, stumbling. She hit the ground hard, the air rushing from her lungs. Gasping, she scrambled to her feet, only to be tackled to the ground. Claws raked down her back, shredding her jacket. She screamed, thrashing wildly. The creature
loomed
over her, its hot breath washing over her face. Aurora stared up into those glowing eyes, frozen in terror. Drool dripped from its jaws, spattering her cheek. She
could feel
its
weight
pressing down, crushing the air from her lungs.
Desperately, she groped for the
Heartstone, her fingers curling around the warm pendant. With a strangled cry, she swung it up, the gemstone flaring to life. The creature reared back, a guttural howl piercing the night. Aurora shoved it off, scrambling to her feet. She ran, lungs burning, adrenaline coursing through her veins. The Heartstone
pulsed
, guiding her through the twisting maze of trees.
She could hear the creature's
pursuit, its savage snarls
echoing
all around her. Aurora burst through the treeline, the standing stones
looming
before her. With a desperate surge of speed, she reached them, the Heartstone blazing. As she passed through the boundary, the grove
seemed to
shift and warp, time twisting. She emerged, gasping, in the
familiar
surroundings of Richmond Park. Whirling, she stared back at the grove, now just a cluster of ancient oaks. The Heartstone's glow faded, its
warmth
fading. Trembling, Aurora sank to her knees, her breath ragged. Whatever that creature was, it was still in the grove, trapped behind the boundary. She hugged herself, shivering, her heart
pounding
in her ears. The Heartstone's power had saved her, but for how long? She glanced down at the pendant, the crimson gemstone dull and lifeless. Whatever lay in wait within the Fae Grove, she knew she would have to return. And next time, she might not be so lucky.
created_at
"2026-02-19T10:41:57.516Z"
2/19/2026, 10:41:57 AM
model
"anthropic/claude-3-haiku"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
331
moderation_latency
200
generation_time
22068
tokens_prompt
1038
tokens_completion
1512
native_tokens_prompt
1046
native_tokens_completion
1514
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
0.002154
router
(null)
provider_responses
0
endpoint_id
"401c6f0f-caeb-4c84-92b7-e163dbccf7c2"
id
"e9ec27ab-0864-40d4-94a9-b1f201bd86af"
is_byok
false
latency
330
model_permaslug
"anthropic/claude-3-haiku"
provider_name
"Amazon Bedrock"
status
200
api_type
"completions"
id
"gen-1771497717-56gMgE5CHFzMectaIUuc"
upstream_id
"e9ec27ab-0864-40d4-94a9-b1f201bd86af"
total_cost
0.002154
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Amazon Bedrock"
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
1
adverbTagCount
0
adverbTags
(empty)
dialogueSentences
2
tagDensity
0.5
leniency
1
rawRatio
0
effectiveRatio
0
69.36%
AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount
979
totalAiIsmAdverbs
6
found
0
adverb
"slowly"
count
3
1
adverb
"cautiously"
count
1
2
adverb
"softly"
count
1
3
adverb
"very"
count
1
highlights
0
"slowly"
1
"cautiously"
2
"softly"
3
"very"
100.00%
AI-ism character names
Target: 0 AI-default names (17 tracked, −20% each)
codexExemptions
(empty)
found
(empty)
100.00%
AI-ism location names
Target: 0 AI-default location names (33 tracked, −20% each)
codexExemptions
(empty)
found
(empty)
0.00%
AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount
979
totalAiIsms
36
found
0
word
"pulsed"
count
2
1
word
"warmth"
count
4
2
word
"quickened"
count
1
3
word
"pounding"
count
5
4
word
"scanning"
count
2
5
word
"gloom"
count
1
6
word
"could feel"
count
2
7
word
"flicker"
count
2
8
word
"foreboding"
count
1
9
word
"stomach"
count
1
10
word
"racing"
count
1
11
word
"loomed"
count
2
12
word
"silence"
count
1
13
word
"oppressive"
count
1
14
word
"raced"
count
1
15
word
"chilling"
count
1
16
word
"echoing"
count
2
17
word
"sense of"
count
1
18
word
"throbbed"
count
1
19
word
"beacon"
count
1
20
word
"weight"
count
1
21
word
"looming"
count
1
22
word
"familiar"
count
1
highlights
0
"pulsed"
1
"warmth"
2
"quickened"
3
"pounding"
4
"scanning"
5
"gloom"
6
"could feel"
7
"flicker"
8
"foreboding"
9
"stomach"
10
"racing"
11
"loomed"
12
"silence"
13
"oppressive"
14
"raced"
15
"chilling"
16
"echoing"
17
"sense of"
18
"throbbed"
19
"beacon"
20
"weight"
21
"looming"
22
"familiar"
100.00%
Cliché density
Target: ≤1 cliche(s) per 800-word window
totalCliches
0
maxInWindow
0
found
(empty)
highlights
(empty)
100.00%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
2
narrationSentences
97
matches
0
"d with dread"
1
"n in terror"
83.95%
Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount
0
hedgeCount
4
narrationSentences
97
filterMatches
(empty)
hedgeMatches
0
"seemed to"
100.00%
Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences
98
gibberishSentences
0
adjustedGibberishSentences
0
longSentenceCount
0
runOnParagraphCount
0
giantParagraphCount
0
wordSaladCount
0
repetitionLoopCount
0
controlTokenCount
0
maxSentenceWordsSeen
26
ratio
0
matches
(empty)
100.00%
Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans
0
markdownWords
0
totalWords
978
ratio
0
matches
(empty)
41.67%
Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions
6
unquotedAttributions
2
matches
0
"Cautiously, she continued on, senses on high alert."
1
"Gripping the Heartstone, she called out, voice shaking."
52.36%
Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions
41
wordCount
973
uniqueNames
7
maxNameDensity
1.95
worstName
"Aurora"
maxWindowNameDensity
3
worstWindowName
"Aurora"
discoveredNames
Fae
2
Grove
2
Heartstone
13
Aurora
19
Richmond
1
Park
1
Slowly
3
persons
0
"Heartstone"
1
"Aurora"
places
0
"Fae"
1
"Grove"
2
"Richmond"
3
"Park"
globalScore
0.524
windowScore
0.667
100.00%
Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences
82
glossingSentenceCount
0
matches
(empty)
100.00%
"Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches
0
per1kWords
0
wordCount
978
matches
(empty)
100.00%
Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount
0
totalSentences
98
matches
(empty)
27.06%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
24
mean
40.75
std
9.97
cv
0.245
sampleLengths
0
55
1
54
2
50
3
56
4
42
5
46
6
35
7
47
8
43
9
37
10
30
11
37
12
42
13
7
14
45
15
36
16
48
17
43
18
44
19
33
20
38
21
31
22
43
23
36
100.00%
Passive voice overuse
Target: ≤2% passive sentences
passiveCount
0
totalSentences
97
matches
(empty)
100.00%
Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount
2
totalVerbs
200
matches
0
"were whispering"
1
"was seeing"
100.00%
Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount
0
semicolonCount
0
flaggedSentences
0
totalSentences
98
ratio
0
matches
(empty)
100.00%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
974
adjectiveStacks
0
stackExamples
(empty)
adverbCount
27
adverbRatio
0.027720739219712527
lyAdverbCount
13
lyAdverbRatio
0.013347022587268994
100.00%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
98
echoCount
0
echoWords
(empty)
100.00%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
98
mean
9.98
std
4.38
cv
0.439
sampleLengths
0
20
1
21
2
14
3
4
4
20
5
6
6
10
7
14
8
3
9
4
10
26
11
6
12
2
13
9
14
8
15
12
16
8
17
17
18
11
19
10
20
7
21
12
22
6
23
7
24
7
25
7
26
8
27
6
28
5
29
13
30
3
31
4
32
9
33
5
34
14
35
13
36
9
37
12
38
13
39
6
40
14
41
11
42
3
43
9
44
11
45
12
46
4
47
8
48
2
49
1
56.12%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
0
diversityRatio
0.336734693877551
totalSentences
98
uniqueOpeners
33
100.00%
Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount
6
totalSentences
95
matches
0
"Slowly, she turned, scanning the"
1
"Just shadows and the towering"
2
"Cautiously, she continued on, senses"
3
"Slowly, Aurora turned, scanning the"
4
"Slowly, she turned, every muscle"
5
"Desperately, she groped for the"
ratio
0.063
100.00%
Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount
27
totalSentences
95
matches
0
"She shouldn't be here."
1
"She strained to hear over"
2
"She could feel their eyes"
3
"She shook her head, telling"
4
"They seemed to loom, ominous"
5
"She whirled, hand going to"
6
"It glowed softly, pulsing with"
7
"She took a step forward,"
8
"Her stomach twisted with dread."
9
"She skidded to a halt,"
10
"She strained to hear anything,"
11
"She took a step back,"
12
"She whirled, but the forest"
13
"She was not alone."
14
"She backed towards the center"
15
"She stumbled back, heart pounding."
16
"she whispered, voice trembling"
17
"She could hear the creature's"
18
"She had no sense of"
19
"She hit the ground hard,"
ratio
0.284
54.74%
Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount
77
totalSentences
95
matches
0
"The thick canopy of ancient"
1
"Aurora tugged her jacket tighter,"
2
"The Heartstone pendant at her"
3
"She shouldn't be here."
4
"Something had called her, a"
5
"The grove felt alive, watching,"
6
"Aurora quickened her pace, boots"
7
"A twig snapped."
8
"Aurora froze, heart pounding."
9
"She strained to hear over"
10
"The grove seemed to close"
11
"She could feel their eyes"
12
"Aurora spun, heart in her"
13
"She shook her head, telling"
14
"The ancient standing stones materialized"
15
"Aurora paused, staring up at"
16
"They seemed to loom, ominous"
17
"A faint rustling drifted to"
18
"She whirled, hand going to"
19
"It glowed softly, pulsing with"
ratio
0.811
0.00%
Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount
0
totalSentences
95
matches
(empty)
ratio
0
100.00%
Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences
53
technicalSentenceCount
3
matches
0
"Overhead, the bare branches creaked and rustled, as if the trees themselves were whispering."
1
"She could feel its weight pressing down, crushing the air from her lungs."
2
"She hugged herself, shivering, her heart pounding in her ears."
0.00%
Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags
1
uselessAdditionCount
1
matches
0
"she whispered, voice trembling"
0.00%
Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags
1
fancyCount
1
fancyTags
0
"she whispered (whisper)"
dialogueSentences
2
tagDensity
0.5
leniency
1
rawRatio
1
effectiveRatio
1
76.1751%