Run: 2026-05-29-01KSSJEFX1M282ZKGJB8W5374Z

Run Details

Duration:
45.0s
Cost:
$0.067700
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

AI
The standing stones came up out of the bracken without warning, the way teeth break the gum line — sudden, pale, and older than anything had a right to be. Rory stopped so abruptly that Nyx flowed into her back, a cool pressure like stepping into the shadow of a doorway. "You felt that," Nyx said. Their voice was the thing she still hadn't gotten used to, a whisper that seemed to arrive from no particular direction, as if the air itself had decided to confide in her. "The shift." She had. One step she'd been walking Richmond Park in the ordinary grey of a London afternoon, the distant grumble of the South Circular threading through the oaks, and the next the sound had simply — stopped. Not muffled. Gone. As though someone had closed a heavy door on the entire world she'd left behind. "Where's the noise?" she asked. "Outside," Nyx said. "We aren't, anymore." The stones were oak — not stone at all, she realized as she came closer, but timber so ancient and weathered it had taken on the grey hardness of granite. Two of them leaned toward each other to form a rough arch, their surfaces carved with whorls that her eye kept trying to follow and losing, the lines folding back into themselves like the loops of a knot with no end. When she lifted her hand toward one, the crescent scar on her left wrist gave a small cold throb, the way it sometimes did before rain. "Don't touch the markings," Nyx murmured. "They'll remember you." "That's not ominous at all." "It isn't meant to be comforting." She withdrew her hand and stepped through. The light changed. It was the first thing she noticed — that the grey was gone, and in its place was a low golden warmth that came from no sun she could find. The canopy overhead was thick and unbroken, yet the clearing beyond the stones glowed as though lit from somewhere just below the grass. Wildflowers grew everywhere, and they were wrong in the most beautiful way: foxgloves blooming beside snowdrops, poppies tangled with crocuses, summer and spring and the strange flush of autumn all crowding the same green floor. Things that should never share a season pressed petal to petal, none of them aware they were impossible. "It's June out there," she said. "And February. And — " She gave up. "Time keeps its own counsel here." Nyx had taken solid form, more or less, a tall silhouette of poured shadow standing a careful distance from the nearest flowers. The faint violet of their eyes was the only fixed point in them. "An hour spent in this place might cost you ten minutes outside. Or three days. The Grove decides. Eat nothing. Drink nothing. And whatever it offers you, do not say yes without first naming the price." "You've been here before." "No." A pause that felt deliberate. "But I have been places like it. The rules are old and they travel." Rory moved further in, and the grass took her weight in silence. That was the second wrongness, the one that crawled under her ribs and stayed there. No crunch of stems, no whisper of disturbed leaves. She glanced back at the line of her own steps and found nothing — no flattened blades, no marks at all, as if the Grove were already forgetting she'd passed. Behind her, where Nyx walked, the same. Half the stories she'd heard about the seer ran through her head at once; she pushed them down. The pendant against her sternum lay quiet and cold. Whatever this place was, it wasn't Hel. That was something. Sound returned to her in pieces as she went deeper, but none of it was the sound she expected. Water, somewhere — a thin silver trickle she couldn't see. Wind moving through leaves, except there was no wind; the air sat warm and still against her face while the canopy stirred overhead in a breeze that belonged to a different evening. And under it all, almost too low to hear, a tone. A single sustained note, like a wet finger drawn round the rim of a glass the size of a cathedral. It didn't rise or fall. It simply held, and the longer she listened the more she felt it in her back teeth. "Do you hear that?" she asked. "I hear a great deal," Nyx said, which was not a yes. A cluster of luminous things drifted up from the flowers as she passed — she took them for fireflies until one paused in the air a hand's breadth from her face. It had no body. It was a small clean point of light, and it hung there as if studying her, then dipped twice, almost a bow, and rejoined the others. They swirled around her in a slow spiral, unhurried, curious. One settled briefly on the back of her wrist, directly over the scar, and for the length of a heartbeat the old wound went warm instead of cold. Then the light lifted away and the chill came back, and she was left with the absurd feeling that she had just been recognized by something that had no eyes. "They like you," Nyx observed. "Is that good?" "It is information." The clearing opened ahead into a hollow where a single tree grew — though calling it a tree felt like calling the sea a puddle. Its trunk was silver-barked and split into a dozen boles that wove together and apart like braided rope, and its leaves were the deep impossible blue of a sky just after the last of the sun. Beneath it the year-round flowers fell away to bare, swept earth, pale as bone, and at the foot of the trunk sat a chair that had grown rather than been built, the roots themselves rising to cradle a hollow seat. It was empty. But the cold weight at Rory's hip — the dagger Isolde had pressed into her hands the last time, moonsilver and always frigid against her thigh — had begun, faintly, to sing. A high thin hum she felt through the leather of its sheath, answering the great low note in the air like a string finding its twin. "She knows we're here," Rory said softly. "She knew before we crossed the stones." Nyx's whisper had drawn tight, wary. "Seers always do. The trick is never what they know, Aurora. It's what they choose to let you take away." A wind that wasn't there moved through the blue leaves, and they rang — actually rang, a sound like distant bells underwater — and the single held note swelled to meet it, and for one dizzying moment the whole hollow seemed to lean inward, toward the empty chair, as if the Grove itself were holding its breath in anticipation of someone about to arrive. Rory rested her hand on the singing dagger and waited to see what would step out of the light.
created_at"2026-05-29T09:53:32.816Z" 5/29/2026, 9:53:32 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4102
moderation_latency(null)
generation_time44715
tokens_prompt1590
tokens_completion1728
native_tokens_prompt2385
native_tokens_completion2231
native_tokens_completion_images(null)
native_tokens_reasoning71
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"end_turn"
service_tier"default"
usage0.0677
router(null)
provider_responses
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endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01JmD2hheKJgu9y1UoYsbsaQ"
is_byokfalse
latency1620
model_permaslug"anthropic/claude-4.8-opus-20260528"
provider_name"Anthropic"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.16.0; linux; x64))"
http_referer(null)
request_id"req-1780048412-qkMrozGluyYiaUCdOAjd"
session_id(null)
api_type"completions"
id"gen-1780048412-nhDi4dFeEyuaAV9hEdUH"
upstream_id"msg_01JmD2hheKJgu9y1UoYsbsaQ"
total_cost0.0677
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags12
adverbTagCount1
adverbTags
0"Rory said softly [softly]"
dialogueSentences24
tagDensity0.5
leniency1
rawRatio0.083
effectiveRatio0.083
95.68% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1157
totalAiIsmAdverbs1
found
0
adverb"softly"
count1
highlights
0"softly"
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)
52.46% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1157
totalAiIsms11
found
0
word"whisper"
count3
1
word"throb"
count1
2
word"comforting"
count1
3
word"warmth"
count1
4
word"weight"
count2
5
word"silence"
count1
6
word"chill"
count1
7
word"anticipation"
count1
highlights
0"whisper"
1"throb"
2"comforting"
3"warmth"
4"weight"
5"silence"
6"chill"
7"anticipation"
100.00% Cliché density
Target: ≤1 cliche(s) per 800-word window
totalCliches0
maxInWindow0
found(empty)
highlights(empty)
100.00% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells1
narrationSentences61
matches
0"h in anticipation"
96.02% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount2
narrationSentences61
filterMatches(empty)
hedgeMatches
0"seemed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences72
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen62
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1171
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions13
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions23
wordCount1022
uniqueNames10
maxNameDensity0.88
worstName"Nyx"
maxWindowNameDensity1.5
worstWindowName"Nyx"
discoveredNames
Nyx9
Richmond1
Park1
London1
South1
Circular1
Rory5
Grove2
Hel1
Isolde1
persons
0"Nyx"
1"Circular"
2"Rory"
3"Isolde"
places
0"Richmond"
1"Park"
2"London"
globalScore1
windowScore1
0.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences43
glossingSentenceCount3
matches
0"whisper that seemed to arrive from no particular direction, as if the air itself had decided to confide in her"
1"as if studying her, then dipped twice, almost a bow, and rejoined the others"
2"felt like calling the sea a puddle"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.854
wordCount1171
matches
0"not stone at all, she realized as she came closer, but timber so ancient"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences72
matches
0"noticed — that the"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs32
mean36.59
std39.3
cv1.074
sampleLengths
051
139
255
35
46
597
69
75
86
97
103
11106
1214
1377
144
1520
1691
1719
18114
196
2012
21129
225
233
243
25101
263
2758
287
2933
3064
3119
88.01% Passive voice overuse
Target: ≤2% passive sentences
passiveCount3
totalSentences61
matches
0"was gone"
1"been recognized"
2"been built"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount2
totalVerbs167
matches
0"were already forgetting"
1"were holding"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount12
semicolonCount2
flaggedSentences12
totalSentences72
ratio0.167
matches
0"The standing stones came up out of the bracken without warning, the way teeth break the gum line — sudden, pale, and older than anything had a right to be."
1"One step she'd been walking Richmond Park in the ordinary grey of a London afternoon, the distant grumble of the South Circular threading through the oaks, and the next the sound had simply — stopped."
2"The stones were oak — not stone at all, she realized as she came closer, but timber so ancient and weathered it had taken on the grey hardness of granite."
3"It was the first thing she noticed — that the grey was gone, and in its place was a low golden warmth that came from no sun she could find."
4"She glanced back at the line of her own steps and found nothing — no flattened blades, no marks at all, as if the Grove were already forgetting she'd passed."
5"Half the stories she'd heard about the seer ran through her head at once; she pushed them down."
6"Water, somewhere — a thin silver trickle she couldn't see."
7"Wind moving through leaves, except there was no wind; the air sat warm and still against her face while the canopy stirred overhead in a breeze that belonged to a different evening."
8"A cluster of luminous things drifted up from the flowers as she passed — she took them for fireflies until one paused in the air a hand's breadth from her face."
9"The clearing opened ahead into a hollow where a single tree grew — though calling it a tree felt like calling the sea a puddle."
10"But the cold weight at Rory's hip — the dagger Isolde had pressed into her hands the last time, moonsilver and always frigid against her thigh — had begun, faintly, to sing."
11"A wind that wasn't there moved through the blue leaves, and they rang — actually rang, a sound like distant bells underwater — and the single held note swelled to meet it, and for one dizzying moment the whole hollow seemed to lean inward, toward the empty chair, as if the Grove itself were holding its breath in anticipation of someone about to arrive."
97.82% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1012
adjectiveStacks0
stackExamples(empty)
adverbCount43
adverbRatio0.042490118577075096
lyAdverbCount9
lyAdverbRatio0.008893280632411068
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences72
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences72
mean16.26
std12.91
cv0.794
sampleLengths
030
121
25
332
42
52
635
72
81
915
105
113
123
1330
1441
1526
166
173
185
196
207
213
2230
2323
2435
2518
266
278
2828
2913
3036
314
326
3314
3412
3515
369
3730
387
3918
409
417
423
4319
4410
4532
4611
4720
485
4917
86.11% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats3
diversityRatio0.5416666666666666
totalSentences72
uniqueOpeners39
65.36% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount1
totalSentences51
matches
0"Then the light lifted away"
ratio0.02
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount12
totalSentences51
matches
0"Their voice was the thing"
1"She withdrew her hand and"
2"It was the first thing"
3"She gave up"
4"She glanced back at the"
5"It didn't rise or fall."
6"It simply held, and the"
7"It had no body."
8"It was a small clean"
9"They swirled around her in"
10"Its trunk was silver-barked and"
11"It was empty."
ratio0.235
87.45% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount38
totalSentences51
matches
0"The standing stones came up"
1"Rory stopped so abruptly that"
2"Their voice was the thing"
3"The stones were oak —"
4"She withdrew her hand and"
5"The light changed."
6"It was the first thing"
7"The canopy overhead was thick"
8"Wildflowers grew everywhere, and they"
9"Things that should never share"
10"She gave up"
11"Nyx had taken solid form,"
12"The faint violet of their"
13"A pause that felt deliberate"
14"Rory moved further in, and"
15"That was the second wrongness,"
16"She glanced back at the"
17"The pendant against her sternum"
18"Whatever this place was, it"
19"That was something."
ratio0.745
98.04% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount1
totalSentences51
matches
0"As though someone had closed"
ratio0.02
0.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences34
technicalSentenceCount7
matches
0"The canopy overhead was thick and unbroken, yet the clearing beyond the stones glowed as though lit from somewhere just below the grass."
1"She glanced back at the line of her own steps and found nothing — no flattened blades, no marks at all, as if the Grove were already forgetting she'd passed."
2"Wind moving through leaves, except there was no wind; the air sat warm and still against her face while the canopy stirred overhead in a breeze that belonged to…"
3"Then the light lifted away and the chill came back, and she was left with the absurd feeling that she had just been recognized by something that had no eyes."
4"Its trunk was silver-barked and split into a dozen boles that wove together and apart like braided rope, and its leaves were the deep impossible blue of a sky j…"
5"Beneath it the year-round flowers fell away to bare, swept earth, pale as bone, and at the foot of the trunk sat a chair that had grown rather than been built, …"
6"A wind that wasn't there moved through the blue leaves, and they rang — actually rang, a sound like distant bells underwater — and the single held note swelled …"
83.33% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags12
uselessAdditionCount1
matches
0"Nyx's whisper had, wary"
66.67% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags9
fancyCount2
fancyTags
0"Nyx murmured (murmur)"
1"Nyx observed (observe)"
dialogueSentences24
tagDensity0.375
leniency0.75
rawRatio0.222
effectiveRatio0.167
83.8983%