Run: 2026-05-29-01KSSK1JQS990AN3EQ63G38BMX

Run Details

Duration:
40.0s
Cost:
$0.058000
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

AI
The cab driver had refused to take her past the locked gates of Richmond Park, so Rory walked the last half-mile in the dark, gravel crunching beneath her boots, the beam of her phone torch bouncing ahead like something nervous and alive. She wasn't supposed to be here. The park closed at dusk, and dusk had bled out hours ago. But the note had been specific — *the grove, after the moon clears the oaks* — and the note had come folded inside a delivery slip from the Golden Empress, tucked beneath a carton of cold spring rolls she hadn't ordered anyone to pick up. The handwriting matched nothing she'd ever seen. The pendant at her throat had gone warm the moment she'd unfolded it. It was warm now. Rory pressed two fingers to the crimson stone and felt it pulse against her skin, slow and steady, like a second heartbeat keeping rhythm just out of time with her own. The faint inner glow lit the hollow of her throat red. She'd learned to trust the thing's warnings, if not to understand them. Tonight it wasn't screaming. It was simply *aware*, and that, somehow, was worse. The standing stones came up out of the dark before she expected them. She knew them at once — ancient oaks grown into the shape of pillars, their bark folded and gnarled into faces that weren't quite faces, their canopies knitting together overhead into something that swallowed the sky. The boundary of Isolde's grove. The threshold between one world and the thinness of another. She'd been here twice in daylight and both times the air inside had tasted of summer. Now it tasted of nothing. Rory stopped at the line the stones made, her breath fogging though it hadn't been cold on the path. She swept the torch left, then right. The clearing opened beyond, the wildflowers that bloomed year-round catching the light in pale washes — foxglove, bluebell, something white she had no name for. They should have been swaying. There was a wind; she could hear it moving in the trees outside the grove, a low continuous hush like the sea heard through a wall. Inside, the flowers were perfectly still. "Hello?" Her voice came out smaller than she intended. It didn't echo. It went into the grove and stopped, the way a stone goes into deep water. She stepped across the boundary. The temperature dropped. Not gradually — all at once, the way it does when you walk from sun into a cellar, and with it came the silence. The wind in the outer trees cut off mid-breath. She turned and looked back through the gap between the stones and saw the path she'd come up, the moonlit gravel, the ordinary dark of the ordinary park. It looked very far away. It looked like a photograph of somewhere she'd once been. *Time moves differently here,* Eva had warned her. *An hour can be a minute. A minute can be a year. Don't dawdle, and for God's sake don't eat anything.* Rory checked her phone. The screen showed 11:47. She watched it. It did not change. The little second-counter beneath the clock had frozen on 11, and as she stared at it she became certain — with the cold, falling certainty of a dream tipping into nightmare — that it had been showing 11 since she crossed the stones. She lowered the phone. That was when she heard the first sound that shouldn't have been there. It was a child laughing. Far off, somewhere on the other side of the clearing, soft and delighted and entirely wrong — because there was no child, because it was midnight in a sealed park, because the laugh had a texture to it like fabric tearing. It rose and dipped and stopped, and in the stopping it left a shape in the silence, a hole exactly the size of itself. The pendant pulsed harder. "Who's there." Not a question this time. Her hand had drifted to the silver chain without her deciding to move it. Nothing answered. The flowers held their breath. She made herself walk forward, torch high, into the heart of the grove, telling herself the laugh had been an owl, a fox, the friction of branches — telling herself in her father's barrister voice, the voice for difficult juries, that there was a reasonable account of every fact before her. The reasonable account failed at the edge of the torchlight. Something moved there. Just past the throw of the beam, at the place where light gave up and darkness began, a paleness shifted — tall, slender, there and then not, the way a face appears in the corner of your eye and dissolves when you turn. She snapped the torch toward it. Bluebells. An empty stretch of grass. The white flowers she couldn't name. She turned back to her path and it was on the other side now. The same paleness. The same wrongness in the way it held still — too still, the stillness of something that has just this instant stopped moving because you looked. Rory did not run. Running, she understood with the cold clear part of her mind, was what it wanted. Running would tell it she was prey. She kept her steps even and her breath measured and she walked, and the pale thing kept pace with her at the edge of her vision, neither closing nor falling back, patient as the cold. "I was invited," she said aloud, because saying it made it true, because words were the only weapon she'd brought. "Someone sent for me. I'm here. So *show yourself.*" The laugh came again — closer, behind her, low by her ear, no longer a child's. The pendant flared so hot against her chest that she gasped and clutched it, and in the red light spilling between her fingers she saw, for one heartbeat, the whole clearing illuminated as if by a struck match — and she was not alone in it. They stood among the flowers, a dozen of them, two dozen, tall and pale and watching, their stillness the stillness of the bluebells, their faces almost faces, ringing her in a circle that had not been there a breath before. Then the glow guttered. The match went out. And in the absolute dark of the grove, where her torch no longer reached and her phone hung frozen at 11:47, something close enough to touch drew breath to speak her name. Not Rory. Not Aurora. The other one. The one she had never told anyone. "*Malphora,*" the dark said, gently, the way you'd wake a sleeping child. "You came home."
created_at"2026-05-29T10:03:58.082Z" 5/29/2026, 10:03:58 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2819
moderation_latency(null)
generation_time39950
tokens_prompt812
tokens_completion1657
native_tokens_prompt1170
native_tokens_completion2086
native_tokens_completion_images(null)
native_tokens_reasoning55
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"
usage0.058
router(null)
provider_responses
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endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_0137k56vRFFevdvpF3eta122"
is_byokfalse
latency1165
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-1780049038-l6qb0RH3YC4mBOi8nxkf"
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api_type"completions"
id"gen-1780049038-7Zomq6XX2eaeZ2UmO80f"
upstream_id"msg_0137k56vRFFevdvpF3eta122"
total_cost0.058
cache_discount(null)
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provider_name"Anthropic"
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Evaluation details

Result Evaluator Details Meta Data
0.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags3
adverbTagCount1
adverbTags
0"she said aloud [aloud]"
dialogueSentences6
tagDensity0.5
leniency1
rawRatio0.333
effectiveRatio0.333
86.39% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1102
totalAiIsmAdverbs3
found
0
adverb"perfectly"
count1
1
adverb"very"
count1
2
adverb"gently"
count1
highlights
0"perfectly"
1"very"
2"gently"
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)
72.78% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1102
totalAiIsms6
found
0
word"pulse"
count1
1
word"echo"
count1
2
word"silence"
count2
3
word"pulsed"
count1
4
word"measured"
count1
highlights
0"pulse"
1"echo"
2"silence"
3"pulsed"
4"measured"
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
emotionTells0
narrationSentences80
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount0
narrationSentences80
filterMatches(empty)
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences82
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen50
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans6
markdownWords37
totalWords1115
ratio0.033
matches
0"the grove, after the moon clears the oaks"
1"aware"
2"Time moves differently here,"
3"An hour can be a minute. A minute can be a year. Don't dawdle, and for God's sake don't eat anything."
4"show yourself."
5"Malphora,"
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions5
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions14
wordCount1096
uniqueNames9
maxNameDensity0.55
worstName"Rory"
maxWindowNameDensity1
worstWindowName"Rory"
discoveredNames
Richmond1
Park1
Rory6
Golden1
Empress1
Isolde1
Eva1
God1
Aurora1
persons
0"Rory"
1"Empress"
2"Isolde"
3"Eva"
4"God"
places
0"Richmond"
1"Park"
2"Golden"
globalScore1
windowScore1
51.96% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences51
glossingSentenceCount2
matches
0"quite faces, their canopies knitting together overhead into something that swallowed the sky"
1"looked like a photograph of somewhere she"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.897
wordCount1115
matches
0"neither closing nor"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences82
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs32
mean34.84
std28.25
cv0.811
sampleLengths
042
183
24
367
413
567
65
782
86
927
105
1179
1229
1358
144
1513
1670
174
1821
1958
2010
2164
2243
2361
2429
2516
2686
278
2832
294
3010
3115
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount0
totalSentences80
matches(empty)
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount1
totalVerbs176
matches
0"wasn't screaming"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount13
semicolonCount1
flaggedSentences12
totalSentences82
ratio0.146
matches
0"But the note had been specific — *the grove, after the moon clears the oaks* — and the note had come folded inside a delivery slip from the Golden Empress, tucked beneath a carton of cold spring rolls she hadn't ordered anyone to pick up."
1"She knew them at once — ancient oaks grown into the shape of pillars, their bark folded and gnarled into faces that weren't quite faces, their canopies knitting together overhead into something that swallowed the sky."
2"The clearing opened beyond, the wildflowers that bloomed year-round catching the light in pale washes — foxglove, bluebell, something white she had no name for."
3"There was a wind; she could hear it moving in the trees outside the grove, a low continuous hush like the sea heard through a wall."
4"Not gradually — all at once, the way it does when you walk from sun into a cellar, and with it came the silence."
5"The little second-counter beneath the clock had frozen on 11, and as she stared at it she became certain — with the cold, falling certainty of a dream tipping into nightmare — that it had been showing 11 since she crossed the stones."
6"Far off, somewhere on the other side of the clearing, soft and delighted and entirely wrong — because there was no child, because it was midnight in a sealed park, because the laugh had a texture to it like fabric tearing."
7"She made herself walk forward, torch high, into the heart of the grove, telling herself the laugh had been an owl, a fox, the friction of branches — telling herself in her father's barrister voice, the voice for difficult juries, that there was a reasonable account of every fact before her."
8"Just past the throw of the beam, at the place where light gave up and darkness began, a paleness shifted — tall, slender, there and then not, the way a face appears in the corner of your eye and dissolves when you turn."
9"The same wrongness in the way it held still — too still, the stillness of something that has just this instant stopped moving because you looked."
10"The laugh came again — closer, behind her, low by her ear, no longer a child's."
11"The pendant flared so hot against her chest that she gasped and clutched it, and in the red light spilling between her fingers she saw, for one heartbeat, the whole clearing illuminated as if by a struck match — and she was not alone in it."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1087
adjectiveStacks0
stackExamples(empty)
adverbCount38
adverbRatio0.034958601655933765
lyAdverbCount8
lyAdverbRatio0.007359705611775529
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences82
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences82
mean13.6
std12.87
cv0.947
sampleLengths
042
16
212
345
47
513
64
731
811
912
104
119
1213
1336
145
1510
1616
175
1819
197
2025
215
2226
236
249
253
2615
275
283
2924
309
3128
325
3310
348
356
366
379
384
394
403
414
4243
434
4413
455
4641
4724
484
497
52.03% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats9
diversityRatio0.3780487804878049
totalSentences82
uniqueOpeners31
87.72% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount2
totalSentences76
matches
0"Just past the throw of"
1"Then the glow guttered."
ratio0.026
77.89% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount27
totalSentences76
matches
0"She wasn't supposed to be"
1"It was warm now."
2"She'd learned to trust the"
3"It was simply *aware*, and"
4"She knew them at once"
5"She'd been here twice in"
6"She swept the torch left,"
7"They should have been swaying."
8"Her voice came out smaller"
9"It didn't echo."
10"It went into the grove"
11"She stepped across the boundary."
12"She turned and looked back"
13"It looked very far away."
14"It looked like a photograph"
15"She watched it."
16"It did not change."
17"She lowered the phone."
18"It was a child laughing."
19"It rose and dipped and"
ratio0.355
45.53% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount63
totalSentences76
matches
0"The cab driver had refused"
1"She wasn't supposed to be"
2"The park closed at dusk,"
3"The handwriting matched nothing she'd"
4"The pendant at her throat"
5"It was warm now."
6"Rory pressed two fingers to"
7"The faint inner glow lit"
8"She'd learned to trust the"
9"Tonight it wasn't screaming."
10"It was simply *aware*, and"
11"The standing stones came up"
12"She knew them at once"
13"The boundary of Isolde's grove."
14"The threshold between one world"
15"She'd been here twice in"
16"Rory stopped at the line"
17"She swept the torch left,"
18"The clearing opened beyond, the"
19"They should have been swaying."
ratio0.829
65.79% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount1
totalSentences76
matches
0"Now it tasted of nothing."
ratio0.013
40.82% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences35
technicalSentenceCount5
matches
0"She knew them at once — ancient oaks grown into the shape of pillars, their bark folded and gnarled into faces that weren't quite faces, their canopies knitting…"
1"The clearing opened beyond, the wildflowers that bloomed year-round catching the light in pale washes — foxglove, bluebell, something white she had no name for."
2"The same wrongness in the way it held still — too still, the stillness of something that has just this instant stopped moving because you looked."
3"The pendant flared so hot against her chest that she gasped and clutched it, and in the red light spilling between her fingers she saw, for one heartbeat, the w…"
4"They stood among the flowers, a dozen of them, two dozen, tall and pale and watching, their stillness the stillness of the bluebells, their faces almost faces, …"
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags3
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags2
fancyCount0
fancyTags(empty)
dialogueSentences6
tagDensity0.333
leniency0.667
rawRatio0
effectiveRatio0
82.6968%