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Run: 2026-02-17-01KHMMEBRM7MSF7TQ8QSEJ5A8R
Run Details
Model:
Claude 3.5 Sonnet
Test:
Bad Writing Habits
Scenario:
Horror: alone in an eerie place at night
Duration:
32.5s
Cost:
$0.040398
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 air felt wrong in Richmond Park after midnight. Aurora's
footsteps
crunched too loudly on the frost-covered grass as she followed the pulse of warmth from the Heartstone pendant against her chest. Each
throb
grew stronger as she approached the ancient oak standing stones that marked the Grove's boundary, though something about their rhythm seemed off tonight — more erratic, almost fevered. The full moon cast
stark
shadows across the clearing, transforming familiar shapes into
looming
specters. Aurora pulled her jacket tighter, her breath forming clouds in the frigid January air. The pendant's usual gentle warmth had become almost uncomfortable, like pressing her palm against an overheated kettle. "Just get in, check for the portal, and get out," she whispered to herself. Simple enough in theory. She'd visited the Grove dozens of times, but never this late, never when the veil between worlds stretched this thin. As she stepped between the standing stones, the familiar disorienting shift washed over her — that subtle sideways step that carried her from mundane Richmond Park into the Fae Grove proper. The wildflowers that usually carpeted the ground in cheerful defiance of seasons had withered to black husks that crackled beneath her feet. Wrong. They'd never died before, not in all her visits. The pendant's heat spiked
sharply
, drawing a hiss from her lips. Aurora pulled it out from beneath her shirt, watching the crimson stone pulse with an intensity she'd never seen. The usual faint inner glow had become a violent strobing that cast red shadows across the dead flowers. A twig snapped somewhere behind her. Aurora spun, heart jumping into her throat, but saw only darkness between the trees. The moon's light seemed dimmer here, as if reluctant to fully enter the Grove. She took a slow breath, trying to steady her nerves. "You're fine," she murmured. "Just find the portal and—" Another snap, closer this time, followed by a sound like dry leaves
being dragged
across stone. Her fingers brushed the crescent scar on her left wrist — an old nervous habit. The pendant's heat had become nearly unbearable, its pulsing so rapid it was almost continuous. Aurora forced herself to move deeper into the Grove, knowing the Hel portal had to be nearby with such a strong reaction. The wrongness grew with each step. The air felt thick, resistant, like wading through honey. And the silence — the Grove was never
truly
silent, always filled with the whisper of wind through leaves or the distant calls of night birds. But now there was nothing except the sound of her own breathing and that irregular dragging noise that
seemed to
circle her position. Movement
flickered
at the edge of her vision. Aurora whirled, catching only a glimpse of something dark disappearing behind a standing stone. The pendant's glow threw red light across the ancient oak's surface, making the natural whorls in the wood
look
disturbingly like faces frozen in silent screams. "Who's there?" Her voice sounded muffled, as if the thick air
was swallowing
the sound. The dragging noise stopped. Then came the whispers — dozens of overlapping voices speaking in languages she didn't recognize, growing louder with each passing second. Aurora backed away, her shoulder blades pressing against rough bark. The pendant's heat had become agony against her skin, but she couldn't bring herself to remove it — its light was the only thing holding back the absolute darkness that now filled the Grove. Something moved in that darkness. Multiple somethings, sliding between the standing stones with unnatural grace. The whispers rose to a fever pitch, and Aurora caught words she recognized mixed with the unknown languages: "Found... finally found... the right one..." Her fingers fumbled for her phone, but the screen remained dark no matter how many times she pressed the power button. Time moved differently in the Grove — how long had she been here? Minutes? Hours? The moon had vanished entirely now, leaving only the violent crimson pulses of the Heartstone to illuminate the closing circle of shadows. The thing she'd glimpsed earlier stepped into the pendant's light. Aurora's scream died in her throat as her mind refused to process what she
was seeing
. It wore a shape that might have been human once, but now
look
ed like a photograph that had
been crumpled
, smoothed out, and crumpled again countless times, with features that shifted and flowed like wax under a flame. "The right one," it said in a voice like stones grinding together. "The one who carries his heart." Aurora ran. She crashed through the Grove's underbrush, the pendant's light bouncing wildly as she fled. The standing stones
seemed to
have multiplied, forcing her to zigzag between them. Behind her, the whispers had become eager, hungry. The dragging sounds pursued her from all directions. She couldn't find the boundary. The Grove's exit should have been right here, but everywhere she turned there were only more standing stones, more darkness, more of those terrible shifting shapes moving just beyond the Heartstone's light. They
were herding
her, she realized with rising panic. Driving her deeper into the Grove with every turn. The pendant
suddenly
went cold against her chest. Its light
flickered
once, twice — and died. In the perfect darkness that followed, Aurora heard something smile.
created_at
"2026-02-17T01:47:11.757018+00:00"
2/17/2026, 1:47:11 AM
model
"anthropic/claude-3.5-sonnet"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1076
moderation_latency
159
generation_time
32340
tokens_prompt
812
tokens_completion
1385
native_tokens_prompt
838
native_tokens_completion
1179
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
0.040398
router
(null)
provider_responses
0
id
"b8cb7c9d-4a57-4c1d-8f11-6ce645443182"
status
200
is_byok
false
latency
1075
endpoint_id
"d4fb79bd-9786-4932-af81-b83040e9f4e4"
provider_name
"Amazon Bedrock"
model_permaslug
"anthropic/claude-3.5-sonnet"
api_type
"completions"
id
"gen-1771292798-CaQ1CjHCc4cKuFVoYo8E"
upstream_id
"b8cb7c9d-4a57-4c1d-8f11-6ce645443182"
total_cost
0.040398
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
3
adverbTagCount
0
adverbTags
(empty)
65.5963%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
872
totalAiIsmAdverbs
3
found
0
adverb
"sharply"
count
1
1
adverb
"suddenly"
count
1
2
adverb
"truly"
count
1
highlights
0
"sharply"
1
"suddenly"
2
"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)
31.1927%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
872
totalAiIsms
6
found
0
word
"throb"
count
1
1
word
"flickered"
count
2
2
word
"looming"
count
1
3
word
"stark"
count
1
4
word
"footsteps"
count
1
highlights
0
"throb"
1
"flickered"
2
"looming"
3
"stark"
4
"footsteps"
100.0000%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
0
maxInWindow
0
found
(empty)
highlights
(empty)
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
61
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
1
hedgeCount
2
narrationSentences
61
filterMatches
0
"look"
hedgeMatches
0
"seemed to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
0
totalSentences
63
matches
(empty)
88.5823%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
21
mean
41.86
std
19.26
cv
0.46
sampleLengths
0
62
1
46
2
38
3
63
4
48
5
6
6
47
7
16
8
52
9
64
10
48
11
19
12
65
13
39
14
58
15
64
16
18
17
45
18
55
19
16
20
10
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
2
totalSentences
61
matches
0
"being dragged"
1
"been crumpled"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
3
totalVerbs
139
matches
0
"was swallowing"
1
"was seeing"
2
"were herding"
89.3222%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
838
adjectiveStacks
1
stackExamples
0
"usual faint inner glow"
adverbCount
38
adverbRatio
0.045346062052505964
lyAdverbCount
16
lyAdverbRatio
0.01909307875894988
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
63
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
63
mean
13.95
std
8.52
cv
0.61
sampleLengths
0
9
1
23
2
30
3
15
4
14
5
17
6
14
7
4
8
20
9
31
10
22
11
1
12
9
13
11
14
19
15
18
16
6
17
14
18
14
19
10
20
4
21
5
22
16
23
15
24
15
25
22
26
6
27
9
28
26
29
23
30
8
31
14
32
26
33
15
34
4
35
21
36
10
37
34
38
5
39
10
40
24
41
21
42
13
43
1
44
1
45
22
46
10
47
16
48
38
49
12
69.3122%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
3
diversityRatio
0.4444444444444444
totalSentences
63
uniqueOpeners
28
0.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
3
fancyCount
3
fancyTags
0
"she whispered to herself (whisper)"
1
"she murmured (murmur)"
2
"it said in a voice like stones grinding together (say grind)"
84.9415%