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Run: 2026-02-17-01KHMMFR9QEPV0VV0KDNXEG3B2
Run Details
Model:
Claude 3 Haiku
Test:
Bad Writing Habits
Scenario:
Horror: alone in an eerie place at night
Duration:
8.9s
Cost:
$0.001781
Provider:
Anthropic
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 was eerie at night. Rory shivered as she stepped between the ancient oaks, the gnarled trunks casting long shadows across the clearing.
The air was heavy with
the scent of wildflowers, the blooms
gleaming
faintly in the moonlight. She had come here for a reason, though she wasn't certain why. A voice had whispered in the back of her mind, a pull she couldn't ignore. Something about the Heartstone pendant resting against her chest, its crimson depths pulsing with an
otherworldly
warmth. The boundary stones
loomed
ahead, their rough-hewn surfaces
etched
with symbols Rory couldn't decipher. She ran her fingers over the carvings, a tingling sensation running through her fingertips. A faint humming filled the air, and for a moment, she thought she glimpsed a shimmering figure beyond the stones. But when she blinked, it
was gone
. Rory frowned, her gaze sweeping the grove. The shadows
seemed to
shift and sway, as if some unseen force stirred the darkness. She strained her ears, but there was only silence, save for the distant hoot of an owl and the rustling of leaves in the breeze. Steeling herself, Rory stepped through the boundary stones. The air
seemed to
thicken around her, and a prickle of unease crawled up her spine. She paused, listening intently, but heard nothing except the pounding of her own heart. Onward she went, shoes crunching on the carpet of fallen leaves. The canopy of trees overhead blocked out the moon, casting the clearing in a deep, impenetrable gloom. Rory slowed her steps, one hand clutching the Heartstone pendant, the other tracing the contours of the standing stones as she moved deeper into the grove. A faint sound reached her ears, like a whisper just on the edge of hearing. Rory froze, her breath catching in her throat. She strained to listen, but the sound had faded, swallowed by the silence. Slowly, she turned, her gaze sweeping the area behind her. There — a
flicker
of movement in the shadows. Rory's heart pounded as she stared, willing her eyes to adjust to the darkness. She took a step backward, the rough stone pressing into her palm. The pendant felt warm against her skin, its glow intensifying. A chill swept over her, and Rory shuddered. She couldn't shake the feeling that she was
being watched
, that something was out there in the darkness, studying her. Swallowing hard, she turned and hurried forward, the leaves crunching beneath her feet. The grove
seemed to
close in around her, the trees
looming
ever higher. Rory's breathing grew ragged, her pulse pounding in her ears. She glanced over her shoulder, but the darkness was impenetrable. An owl hooted in the distance, the sound
echoing
through the clearing. Rory froze, her gaze fixed on a spot just beyond the boundary stones. There, in the shadows, she glimpsed a shape, a figure that
seemed to
shift and blur. Her
heart hammered in her chest
as she stared, transfixed. She blinked, and the figure
was gone
. Rory turned and ran, her legs pumping as she raced through the grove. The shadows
seemed to
reach for her, grasping and clawing. The pendant grew hot against her skin, its glow flaring to life. Rory clutched it
tightly
, its warmth a reassuring anchor in the darkness. She burst through the boundary stones, the grove vanishing behind her. Rory stumbled, her breath coming in ragged gasps. She whirled, half-expecting to see the figure lurking at the edge of the clearing. But the grove was silent, the shadows still. Rory stood there for a long moment, her gaze scanning the area. The pendant's glow had faded, leaving her in near-darkness. Slowly, she turned and made her way back towards the path, her steps quickening with each passing moment. As she walked, Rory couldn't shake the feeling that she was
being followed
. The hairs on the back of her neck prickled, and she fought the urge to look over her shoulder. The grove had been unnerving, but this was different — a
tangible
sense of danger that sent shivers down her spine. Rory emerged from the trees, the familiar sounds of the park greeting her. She paused, her gaze sweeping the area. Nothing seemed out of the ordinary, and yet she couldn't shake the unease that had settled over her. With a heavy sigh, Rory continued on, her steps quickening as she made her way towards the exit. The pendant felt cool against her skin, its earlier warmth faded. She couldn't help but glance down at it, the crimson depths staring back at her like an unblinking eye. As Rory stepped out of the park and onto the street, she
couldn't help but feel
a lingering sense of unease. The grove had
unsettled
her, and she couldn't shake the feeling that she had
been watched
— that something had been following her, lurking just out of sight. She shivered, pulling her jacket tighter around herself. The Heartstone pendant felt heavy against her chest, a constant reminder of the strange power that had drawn her to the grove. Rory
couldn't help but wonder
what else might be out there, waiting in the shadows.
created_at
"2026-02-17T01:47:33.874095+00:00"
2/17/2026, 1:47:33 AM
model
"anthropic/claude-3-haiku"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
288
moderation_latency
(null)
generation_time
8806
tokens_prompt
812
tokens_completion
1284
native_tokens_prompt
838
native_tokens_completion
1257
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
0.00178075
router
(null)
provider_responses
0
id
"msg_01PqM3gcior3UTZS2qRwejzQ"
status
200
is_byok
false
latency
288
endpoint_id
"8661a1db-b0cf-4eb2-ba04-c2a79f698682"
provider_name
"Anthropic"
model_permaslug
"anthropic/claude-3-haiku"
api_type
"completions"
id
"gen-1771292844-xx53c5XOysz8lFo5113M"
upstream_id
"msg_01PqM3gcior3UTZS2qRwejzQ"
total_cost
0.00178075
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Anthropic"
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)
65.1972%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
862
totalAiIsmAdverbs
3
found
0
adverb
"slowly"
count
2
1
adverb
"tightly"
count
1
highlights
0
"slowly"
1
"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
862
totalAiIsms
9
found
0
word
"tangible"
count
1
1
word
"flicker"
count
1
2
word
"gleaming"
count
1
3
word
"otherworldly"
count
1
4
word
"loomed"
count
1
5
word
"looming"
count
1
6
word
"unsettled"
count
1
7
word
"echoing"
count
1
8
word
"etched"
count
1
highlights
0
"tangible"
1
"flicker"
2
"gleaming"
3
"otherworldly"
4
"loomed"
5
"looming"
6
"unsettled"
7
"echoing"
8
"etched"
33.3333%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
4
maxInWindow
3
found
0
label
"heart pounded in chest"
count
1
1
label
"air was thick with"
count
1
2
label
"couldn't help but"
count
2
highlights
0
"heart hammered in her chest"
1
"The air was heavy with"
2
"couldn't help but feel"
3
"couldn't help but wonder"
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
63
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
0
hedgeCount
5
narrationSentences
63
filterMatches
(empty)
hedgeMatches
0
"seemed to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
2
totalSentences
63
matches
0
"watched, that something"
1
"watched — that something"
0.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
19
mean
45.37
std
4.92
cv
0.109
sampleLengths
0
41
1
44
2
55
3
47
4
38
5
54
6
46
7
45
8
41
9
45
10
46
11
47
12
41
13
39
14
53
15
38
16
48
17
49
18
45
80.4233%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
5
totalSentences
63
matches
0
"was gone"
1
"being watched"
2
"was gone"
3
"being followed"
4
"been watched "
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
0
totalVerbs
160
matches
(empty)
100.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
862
adjectiveStacks
0
stackExamples
(empty)
adverbCount
15
adverbRatio
0.01740139211136891
lyAdverbCount
7
lyAdverbRatio
0.008120649651972157
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
63
echoCount
0
echoWords
(empty)
82.7274%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
63
mean
13.68
std
4.88
cv
0.357
sampleLengths
0
7
1
18
2
16
3
12
4
15
5
17
6
14
7
14
8
20
9
7
10
7
11
15
12
25
13
8
14
16
15
14
16
11
17
17
18
26
19
15
20
8
21
13
22
10
23
9
24
14
25
12
26
10
27
8
28
20
29
13
30
13
31
10
32
10
33
12
34
13
35
16
36
10
37
7
38
13
39
10
40
12
41
12
42
11
43
8
44
14
45
8
46
12
47
9
48
18
49
13
46.8254%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
2
diversityRatio
0.25396825396825395
totalSentences
63
uniqueOpeners
16
100.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
0
fancyCount
0
fancyTags
(empty)
76.9710%