NC Bench
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Run: 2026-02-17-01KHMMDRV2GB1DMQFA29PXANGB
Run Details
Model:
Claude 3.7 Sonnet
Test:
Bad Writing Habits
Scenario:
Fantasy: entering an ancient ruin
Duration:
43.7s
Cost:
$0.037356
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> <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
Aurora shivered as she crossed the boundary into the Fae Grove. The transition was subtle—one moment she
was walking
among the ordinary oaks of Richmond Park, and the next she had passed between two ancient, twisted trees that
seemed to
bend toward each other like guardians at a gate. The air changed, becoming sweeter and heavier with fragrance. "Did you
feel that?" she
whispered, touching the Heartstone Pendant at her throat. It remained cool against her skin, offering no warmth to indicate a Hel portal nearby. This was different—Fae territory. Nyx moved beside her, their shadowy form rippling like ink in water. "The Veil is thin here," they said, voice barely a whisper on the breeze. "We walk between worlds." The third member of their small party, Isolde, stepped forward with practiced grace, her silver hair catching what little sunlight filtered through the canopy. She moved without disturbing a single leaf, leaving no footprints on the soft moss beneath them. "My home," Isolde said, her pale lavender eyes surveying the grove with familiar affection. "Few mortals have seen it." A pause, then: "Fewer still have left." Rory wasn't sure if that was a warning or simply a statement of fact. With Isolde, it was difficult to tell. The half-Fae seer spoke in riddles, and though she couldn't lie—a compulsion of her heritage—she could certainly mislead. "It's beautiful," Aurora said, because it was. The further they ventured into the grove, the more
otherworldly
it became. Wildflowers bloomed in impossible profusion despite the December chill outside the grove's boundaries. Blues and purples dominated, but here and there, brilliant reds and golds punctuated the landscape. Butterfly-like creatures with wings of gossamer flitted from bloom to bloom, trailing luminescent dust. "Are we... still on Earth?" Aurora asked, reaching out to touch a flower with petals that
seemed to
be made of glass. It chimed
softly
at her touch, a delicate musical note that
hung in the air
. "Yes and no," Isolde replied, moving ahead of them. "The Grove exists in the spaces between. Like our shadow friend." She nodded toward Nyx. "A fold in reality where Earth and the Fae Realms overlap." Nyx drifted toward a pool of water so still and clear it looked like polished obsidian. When they leaned over it, their reflection showed not the shadowy form they currently wore but a man in 17th-century clothing—Aldric, their human form from long ago. "The waters remember," Isolde said
softly
. "They see beyond the Veil of time as well as realm." Aurora approached the pool
cautiously
. Her own reflection
wavered
and shifted, showing not just her present self but glimpses of... something else. Someone else. A woman with her face but adorned in crimson robes that
seemed to
flow like wine. "What am I seeing?" she asked, touching the crescent-shaped scar on her left wrist reflexively. "Possibilities," Isolde answered, "or perhaps memories not yet made." Nyx pulled back from the water, their violet eyes glowing more
intensely
. "We should continue. The solstice approaches, and the Veil thins further with each passing hour." They moved deeper into the grove, following a path that
seemed to
appear before them and vanish behind them. Aurora
noticed that the
trees were changing, becoming taller, more ancient. Their bark glittered with embedded crystals that caught the light in prismatic bursts. The canopy above had shifted too—what had seemed like ordinary daylight filtering through leaves was now revealed to be an amber sky, reminiscent of descriptions she'd heard of Dymas. "The grove is responding to our presence," Isolde explained, seeing Aurora's confusion. "It shows us what we seek... or what seeks us." The air grew warmer, heavier with the scent of ripe fruit and fermenting wine. Aurora touched the Heartstone Pendant again, and this time it pulsed with gentle warmth against her palm. "Dymas," she whispered. "I can feel it through the pendant." "The realm of Gluttony bleeds through here," Isolde confirmed. "Prince Belphegor's influence reaches far. The Fae Courts and Hel have long maintained... agreements." Aurora's hand moved to the Fae-Forged Blade secured at her hip, a gift from Isolde that she was still learning to use. Its moonsilver surface was cool even through the leather sheath. "Will we need this?" she asked. "One always needs protection when walking between worlds," Isolde replied cryptically. They came to a clearing where standing stones formed a perfect circle. Unlike the stones at the grove's entrance, these were not oak but something
crystalline
, embedded with what looked like frozen flames. At the center of the circle stood a table laden with a feast—fruits Aurora had never seen, wines in decanters that shifted colors like mood rings, and pastries that steamed despite there being no obvious source of heat. "Do not eat," Nyx warned
sharply
. "Accepting Fae hospitality without understanding the terms is dangerous." Isolde's lips curved in a smile. "Wise counsel from one who exists between states," she said. "The feast is not meant for consumption but for communion. It is how we will speak with the Emissary." "Emissary?" Aurora asked. "From where?" "From Dymas," Isolde replied, approaching the table. "You seek knowledge of the Helrealms' intentions as the solstice approaches. The Emissary can provide insight—for a price." Aurora
felt uneasy
. Her experiences with Hel's representatives had rarely ended well. She remembered the crimson-robed reflection in the pool and wondered if it was a warning. Nyx
seemed to
share her concerns. They moved closer to Aurora, their shadowy form solidifying
slightly
as if preparing for confrontation. "What price would this Emissary demand?" Aurora asked. "That depends on what you ask," Isolde said, arranging items on the table in some pattern that made sense only to her. "But it is always proportionate. A small secret for a small truth. A great sacrifice for a great revelation." The air in the clearing
began to
thicken and swirl. The amber light intensified, and the standing stones
began to
hum at a frequency that made Aurora's teeth ache. She felt the Heartstone Pendant growing warmer against her skin, nearly hot enough to burn. "It begins," Isolde said, stepping back from the table. "The Veil parts." The space above the feast table
shimmered
like heat rising from pavement in summer. Colors bent and twisted, forming a tear in reality itself. Through it, Aurora caught glimpses of sprawling vineyards, magnificent feasting halls, and kitchens where chefs worked at massive stoves. Dymas—the realm of Gluttony—revealed in fragmentary images. A figure
began to
coalesce from the tear. At first just a silhouette, then gradually filling with substance and color. A tall, elegant person with skin the deep red-brown of wine and eyes that glittered like amber gemstones. They wore robes that
seemed to
be made from liquid gold, and around their neck hung a pendant that mirrored Aurora's Heartstone, though larger and more elaborate. "Ah," the figure said, voice rich and melodious. "Visitors from the mortal fold. And the exiled seer." They nodded to Isolde. "It has been some time since you called upon Dymas." "Circumstances demand unusual alliances," Isolde replied. The Emissary's gaze fixed on Aurora, studying her with unsettling intensity. "You wear our token," they said, gesturing to the pendant. "Yet you are not contracted to our realm." Aurora's hand closed protectively around the Heartstone. "It was given to me. I don't know by whom." "Interesting," the Emissary said, smiling to reveal teeth like polished carnelian. "Nothing from Dymas is ever
truly
given. It is always... invested. A transaction awaiting completion." Nyx moved
slightly
forward, placing themselves between Aurora and the Emissary. "We seek information, not entanglements," they said, their whisper-voice somehow carrying with unexpected authority. The Emissary laughed, a sound like crystal glasses clinking in toast. "Says the shadow bound by its own failed ritual." They gestured expansively at the feast. "Everything is an entanglement, dear Shade. The question is merely what terms you find acceptable." Aurora stepped forward, one hand still on her pendant, the other resting on the hilt of her Fae blade. The juxtaposition wasn't lost on the Emissary, whose
eyes narrowed
at the sight of the weapon. "What can you tell us about the solstice ritual?" she asked. "Why is Hel so interested in the weakening of the Veil this year specifically?" The Emissary's smile widened, revealing more teeth than seemed possible in a human mouth. "Ah, you ask the expensive questions, little mortal. What are you prepared to offer in exchange?"
created_at
"2026-02-17T01:47:03.633111+00:00"
2/17/2026, 1:47:03 AM
model
"anthropic/claude-3-7-sonnet-20250219"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
507
moderation_latency
(null)
generation_time
43602
tokens_prompt
1590
tokens_completion
2268
native_tokens_prompt
1757
native_tokens_completion
2139
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
0.037356
router
(null)
provider_responses
0
id
"msg_01Pp7NmLpxtWnFrgqokMTcLY"
status
200
is_byok
false
latency
507
endpoint_id
"1347c8dc-12f5-47df-8355-3ec7e80a8c67"
provider_name
"Anthropic"
model_permaslug
"anthropic/claude-3-7-sonnet-20250219"
api_type
"completions"
id
"gen-1771292779-DVnxHlU6DXneF1N35Zyp"
upstream_id
"msg_01Pp7NmLpxtWnFrgqokMTcLY"
total_cost
0.037356
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Anthropic"
Evaluation details
Result
Evaluator
Details
Meta Data
46.9136%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
27
adverbTagCount
7
adverbTags
0
"they said, voice barely a whisper on the breeze [barely]"
1
"Isolde said softly [softly]"
2
"Isolde replied cryptically [cryptically]"
3
"Nyx warned sharply [sharply]"
4
"Isolde said, arranging items on the table in some pattern that made sense only to her [only]"
5
"Isolde said, stepping back from the table [back]"
6
"they said, their whisper-voice somehow carrying with unexpected authority [somehow]"
43.5028%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
1416
totalAiIsmAdverbs
8
found
0
adverb
"cautiously"
count
1
1
adverb
"intensely"
count
1
2
adverb
"sharply"
count
1
3
adverb
"slightly"
count
2
4
adverb
"softly"
count
2
5
adverb
"truly"
count
1
highlights
0
"cautiously"
1
"intensely"
2
"sharply"
3
"slightly"
4
"softly"
5
"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)
71.7514%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
1416
totalAiIsms
4
found
0
word
"crystalline"
count
1
1
word
"shimmered"
count
1
2
word
"wavered"
count
1
3
word
"otherworldly"
count
1
highlights
0
"crystalline"
1
"shimmered"
2
"wavered"
3
"otherworldly"
100.0000%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
2
maxInWindow
1
found
0
label
"eyes widened/narrowed"
count
1
1
label
"hung in the air"
count
1
highlights
0
"eyes narrowed"
1
"hung in the air"
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
1
narrationSentences
90
matches
0
"felt uneasy"
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
0
hedgeCount
9
narrationSentences
90
filterMatches
(empty)
hedgeMatches
0
"seemed to"
1
"began to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
2
totalSentences
110
matches
0
"feel that?\" she"
1
"noticed that the"
100.0000%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
46
mean
30.43
std
16.63
cv
0.546
sampleLengths
0
58
1
32
2
30
3
40
4
26
5
39
6
61
7
37
8
35
9
43
10
17
11
40
12
15
13
9
14
27
15
72
16
22
17
31
18
10
19
23
20
32
21
6
22
11
23
71
24
15
25
35
26
5
27
25
28
27
29
21
30
8
31
41
32
44
33
12
34
50
35
65
36
31
37
6
38
29
39
17
40
26
41
25
42
41
43
35
44
25
45
30
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
0
totalSentences
90
matches
(empty)
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
1
totalVerbs
196
matches
0
"was walking"
98.5770%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
1033
adjectiveStacks
0
stackExamples
(empty)
adverbCount
43
adverbRatio
0.041626331074540175
lyAdverbCount
20
lyAdverbRatio
0.01936108422071636
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
110
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
110
mean
12.73
std
6.44
cv
0.506
sampleLengths
0
11
1
38
2
9
3
13
4
15
5
4
6
12
7
14
8
4
9
24
10
16
11
14
12
12
13
14
14
7
15
18
16
7
17
12
18
13
19
15
20
14
21
22
22
15
23
9
24
15
25
11
26
16
27
27
28
6
29
11
30
5
31
15
32
2
33
2
34
16
35
15
36
9
37
12
38
15
39
19
40
11
41
13
42
29
43
12
44
10
45
14
46
17
47
3
48
7
49
9
77.2727%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
5
diversityRatio
0.4909090909090909
totalSentences
110
uniqueOpeners
54
17.5926%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
27
fancyCount
17
fancyTags
0
"whispered (whisper)"
1
"they said, voice barely a whisper on the breeze (say, voice barely)"
2
"Isolde said, her pale lavender eyes surveying the grove with familiar affection (say, survey)"
3
"Aurora said, because it was (say, be)"
4
"Isolde said softly (say softly)"
5
"Isolde explained, seeing Aurora's confusion (explain, see)"
6
"she whispered (whisper)"
7
"Isolde confirmed (confirm)"
8
"Isolde replied cryptically (reply cryptically)"
9
"Nyx warned sharply (warn sharply)"
10
"Isolde replied, approaching the table (reply, approach)"
11
"Isolde said, arranging items on the table in some pattern that made sense only to her (say, arrange make)"
12
"Isolde said, stepping back from the table (say, step)"
13
"the figure said, voice rich and melodious (say, voice)"
14
"they said, gesturing to the pendant (say, gesture)"
15
"the Emissary said, smiling to reveal teeth like polished carnelian (say, smile reveal like)"
16
"they said, their whisper-voice somehow carrying with unexpected authority (say, somehow carry)"
85.6241%