NC Bench
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Run: 2026-02-17-01KHMMEACFP03577WEWXS10BXM
Run Details
Model:
Claude 3.5 Sonnet
Test:
Bad Writing Habits
Scenario:
Fantasy: entering an ancient ruin
Duration:
41.7s
Cost:
$0.048702
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> <character id="4418" name="Nyx" aliases="Nyx, the Shadow, Nightwhisper" pronouns="they/them" species="Shade" storyRole="Wild Card"> <eyeColor>faintly glowing violet</eyeColor> <height>approximately 6'2" in solid form</height> <age>ageless</age> <form>humanoid silhouette of living shadow, can shift between solid and incorporeal</form> <voice>sounds like a whisper carried on the wind</voice> <description>A being of living shadow, existing between the mortal plane and the spaces between realms.</description> <backstory>Nyx was once a human sorcerer named Aldric who became trapped between realms during a failed summoning ritual in 1643. They now exist as a Shade, bound to the mortal plane but able to slip between shadows.</backstory> </character> <character id="4424" name="Isolde Varga" aliases="Isolde, the Seer" pronouns="she/her" species="Half-Fae" storyRole="Oracle"> <eyeColor>pale lavender</eyeColor> <hair>silver, reaching her waist</hair> <height>5'5"</height> <age>300 years old</age> <appearance>ethereal, ageless</appearance> <speech>speaks in riddles</speech> <footprints>leaves no footprints when she walks</footprints> <compulsion>cannot lie (Fae compulsion) but can mislead</compulsion> <description>A Half-Fae seer exiled from the Fae Courts for sharing visions with mortals.</description> <backstory>She now lives in a hidden grove in Richmond Park, offering cryptic prophecies to those who seek her out.</backstory> </character> <location id="853" name="Dymas (Gluttony)" aliases="Dymas, gluttony, Dymasian" realm="Hel" sin="Gluttony"> <ruler>Prince Belphegor</ruler> <skyColor>warm amber</skyColor> <description>A place of excess and indulgence. Sprawling vineyards, orchards, and gardens provide exotic ingredients for master chefs — often helbound souls contracted from Earth. Grand feasts and culinary competitions are common.</description> </location> <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> <item id="2006" name="Fae-Forged Blade" aliases="the Fae blade, Isolde's gift" type="Weapon" origin="The Fae Courts"> <material>moonsilver</material> <shape>slender, leaf-shaped dagger</shape> <temperature>always cold to the touch</temperature> <glow>faintly luminescent in moonlight</glow> <power>can cut through magical wards; particularly effective against demons</power> <givenTo>given to Aurora by Isolde as a gift</givenTo> <description>A weapon of the Fae Courts, rare and highly coveted.</description> </item> <lore id="7001" name="The Veil" aliases="the Veil, the Barrier, the Boundary" category="Cosmology"> <solsticeEffect>weakens during the winter solstice, strengthens during the summer solstice</solsticeEffect> <appearance>faint shimmering distortion visible only to those with supernatural sight</appearance> <monitoring>rift points (tears in the Veil) are monitored by the Wardens</monitoring> <description>The Veil is the metaphysical barrier separating Earth from Hel and the Fae Realms.</description> </lore> </codex> Write a fully fleshed out scene of at least 1000 words in the fantasy genre. A small group enters an ancient, otherworldly place for the first time. The environment is alien and wondrous. Describe their exploration — what they see, hear, and feel as they move deeper. Include moments of discovery, unease, and wonder. Let the world-building emerge through the characters' experience rather than exposition. Use the codex entries above as your world reference for characters, setting, and lore. Only include the prose of the scene without any markdown or commentary.
Model response
Messages
Meta
AI
The pendant against Aurora's chest grew warm as they approached the ancient oak stones, their weathered surfaces
etched
with spiraling patterns that
seemed to
shift in the failing light. Nyx moved like liquid shadow beside her, their form rippling at the edges. Behind them both, Isolde's silver hair caught the last rays of sunset as she raised one elegant hand toward the standing stones. "The veil grows thin here," Isolde said, her voice carrying the lilt of centuries. "Step
carefully
. Time has different ideas in the grove." Aurora's fingers found the crescent scar on her left wrist, rubbing it absently as she often did when nervous. The air between the stones shimpered like heat waves rising from summer pavement, but the evening was cool. As they passed between the ancient oaks, the world... shifted. The transition was subtle at first – a change in the quality of light, as if the sun had moved position in the sky. Then the
very
air
seemed to
thicken, heavy with the scent of flowers that shouldn't bloom in December. Aurora's ears popped, and when she looked back, the Richmond Park she knew had vanished. In its place stood an endless wall of mist. "Welcome," Isolde said, "to my
sanctuary
." The grove opened before them like a dream. Wildflowers carpeted the ground in impossible colors – deep purples that
seemed to
pulse with their own light, blues that
shimmered
like captured starlight, whites so pure they hurt to look at directly. The trees here were ancient beyond reckoning, their trunks wider than cars, their canopy so high above that it vanished into perpetual twilight. "The air tastes like music," Aurora whispered, surprised to find it true. Each breath carried notes of something just beyond hearing, sweet and haunting. Nyx drifted forward, their violet eyes brightening with interest. "The boundaries are... peculiar here. I can feel multiple realms pressing close." Their whisper-voice
seemed to
blend with the grove's ambient song. They followed a path that hadn't been visible until they stepped upon it, stones that gleamed like mother-of-pearl appearing beneath their feet. Aurora noticed that while her boots left clear prints in the phosphorescent moss beside the path, Isolde's steps left no trace at all. The Fae-forged blade at Aurora's hip grew colder, its presence a constant reminder of the
otherworldly
nature of their surroundings. "Look," Nyx said, indicating a cluster of
crystalline
formations that grew like flowers from the base of a twisted oak. As they watched, the crystals chimed
softly
and changed color, shifting from deep amber to pale lavender – the same shade as Isolde's eyes. "They respond to presence," Isolde explained, though her tone suggested there was more she
wasn't saying
. "The grove remembers all who pass through it. Time leaves its
echoes
here." As if in response to her words, Aurora caught a glimpse of movement in her peripheral vision – a figure that
seemed to
be made of light and mist, walking a parallel path before fading away. The pendant at her throat pulsed once, warm against her skin.
"Was that—" she
started to
ask, but Isolde raised a finger to her lips. "Best not to question e
very
thing you see here. Some answers aren't meant for mortal minds." They pressed deeper into the grove, where the trees grew closer together and bioluminescent fungi traced patterns up their trunks. Somewhere in the distance, wind chimes played a melody that made Aurora's chest ache with a longing she couldn't name. The path led them to a circular clearing where standing stones similar to those at the entrance formed a perfect circle. Unlike their weathered cousins, these gleamed like polished obsidian, their surfaces
etched
with symbols that
seemed to
move when viewed directly. "The heart of my exile," Isolde said, her usual riddling tone replaced by something heavier. "And perhaps the key to what you seek." Nyx moved closer to one of the black stones, their shadowy form reflecting in the polished surface. "These aren't just markers. They're anchors, aren't they? Holding this pocket of space between the realms." "Clever shade," Isolde smiled. "Yes. They keep the grove tethered, preventing it from drifting too far into the Fae realms or too close to... other places." Her gaze
flickered
to Aurora's pendant meaningfully. Aurora stepped into the circle, and immediately the air grew heavier, charged with potential. The Fae blade at her hip turned ice-cold, and the Heartstone pendant pulsed rapidly, like a frightened heartbeat. Above them, the twilight canopy
seemed to
part, revealing not stars but swirling patterns of light that might have been another world's sky. "The Veil is tissue-thin here," Isolde said
softly
. "Can you feel it? The way the worlds press against each other, seeking connection?" Aurora could. It felt like standing in the eye of a storm, like being simultaneously in multiple places at once. Through the gaps between the stones, she caught glimpses of other landscapes – sun-drenched vineyards under an amber sky that might have been Dymas,
crystalline
forests that had to be the Fae Courts, and places she had no names for. "This is why you brought us here," she said, understanding dawning. "This isn't just your
sanctuary
. It's a crossroads." Isolde's smile was both sad and knowing. "All paths meet somewhere, dear one. The trick is knowing which one to take – and more importantly, which ones to leave untraveled."
created_at
"2026-02-17T01:47:19.53973+00:00"
2/17/2026, 1:47:19 AM
model
"anthropic/claude-3.5-sonnet"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
926
moderation_latency
158
generation_time
41462
tokens_prompt
1590
tokens_completion
1402
native_tokens_prompt
1757
native_tokens_completion
1272
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
0.048702
router
(null)
provider_responses
0
id
"3cb1310a-ac2d-481d-883b-bf755230db71"
status
200
is_byok
false
latency
926
endpoint_id
"d4fb79bd-9786-4932-af81-b83040e9f4e4"
provider_name
"Amazon Bedrock"
model_permaslug
"anthropic/claude-3.5-sonnet"
api_type
"completions"
id
"gen-1771292797-nUT9DqxVpweMrkcW87UH"
upstream_id
"3cb1310a-ac2d-481d-883b-bf755230db71"
total_cost
0.048702
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Amazon Bedrock"
Evaluation details
Result
Evaluator
Details
Meta Data
66.6667%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
10
adverbTagCount
2
adverbTags
0
"Nyx said, indicating a cluster of crystalline formations that grew like flowers from the base of a twisted oak [like]"
1
"Isolde said softly [softly]"
55.4069%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
897
totalAiIsmAdverbs
4
found
0
adverb
"carefully"
count
1
1
adverb
"softly"
count
2
2
adverb
"very"
count
1
highlights
0
"carefully"
1
"softly"
2
"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
897
totalAiIsms
10
found
0
word
"crystalline"
count
2
1
word
"sanctuary"
count
2
2
word
"flickered"
count
1
3
word
"shimmered"
count
1
4
word
"otherworldly"
count
1
5
word
"echoes"
count
1
6
word
"etched"
count
2
highlights
0
"crystalline"
1
"sanctuary"
2
"flickered"
3
"shimmered"
4
"otherworldly"
5
"echoes"
6
"etched"
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
46
matches
(empty)
76.5595%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
0
hedgeCount
8
narrationSentences
46
filterMatches
(empty)
hedgeMatches
0
"seemed to"
1
"started to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
1
totalSentences
54
matches
0
"\"Was that—\" she"
100.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
23
mean
38.96
std
20.2
cv
0.519
sampleLengths
0
64
1
23
2
47
3
66
4
6
5
64
6
24
7
31
8
65
9
44
10
29
11
47
12
14
13
15
14
82
15
23
16
33
17
33
18
55
19
22
20
60
21
19
22
30
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
0
totalSentences
46
matches
(empty)
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
1
totalVerbs
122
matches
0
"wasn't saying"
100.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
717
adjectiveStacks
0
stackExamples
(empty)
adverbCount
28
adverbRatio
0.03905160390516039
lyAdverbCount
10
lyAdverbRatio
0.01394700139470014
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
54
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
54
mean
16.59
std
8.02
cv
0.483
sampleLengths
0
29
1
13
2
22
3
14
4
9
5
19
6
18
7
9
8
1
9
24
10
18
11
15
12
9
13
6
14
8
15
33
16
23
17
12
18
12
19
9
20
22
21
22
22
23
23
20
24
20
25
24
26
16
27
13
28
36
29
11
30
14
31
15
32
20
33
20
34
21
35
21
36
15
37
8
38
17
39
16
40
4
41
29
42
14
43
18
44
23
45
8
46
14
47
2
48
18
49
40
85.8025%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
2
diversityRatio
0.5370370370370371
totalSentences
54
uniqueOpeners
29
0.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
10
fancyCount
9
fancyTags
0
"Isolde said, her voice carrying the lilt of centuries (say, carry)"
1
"Aurora whispered, surprised to find it true (whisper, surprise find)"
2
"Nyx said, indicating a cluster of crystalline formations that grew like flowers from the base of a twisted oak (say, indicate grow like)"
3
"Isolde explained, though her tone suggested there was more she wasn't saying (explain, suggest be does not say)"
4
"started (start)"
5
"Isolde said, her usual riddling tone replaced by something heavier (say, replace)"
6
"Isolde smiled (smile)"
7
"Isolde said softly (say softly)"
8
"she said, understanding dawning (say, dawn)"
81.4374%