Run: 2026-10-08-01M4DYZ48E7MG0ZV9PZ4HS0PRZ

Run Details

Duration:
14.7s
Cost:
$0.001127
Provider:
Claude Platform on AWS

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 gate at the edge of Richmond Park had been locked when Rory reached it, so she climbed. The iron was cold under her palms and her trainers slipped on the wet top bar before she dropped onto the grass on the far side. Nobody had seen her do it. The road beyond the trees hummed with the occasional car, and then even that faded, the way sound did when you walked far enough from a city. The directions in the letter had been brief. *Past the old oaks, where the ground stops being ground. Come alone. Come before the second bell.* She had read it four times in the Golden Empress kitchen between deliveries, Yu-Fei watching her over a pan of hot oil, and each time she had told herself it was a prank. Then she had felt the pendant warm against her breastbone, and she had stopped telling herself anything. The Heartstone hung on its thin silver chain beneath her jumper. Usually it was cool, a dull weight the size of her thumb's nail. Now it throbbed with a faint, patient heat, like a coin left in a pocket on a summer afternoon. She pressed her hand over it and kept walking. The oaks came first. They were enormous, older than any records she had read about the park, their trunks split and furred with moss. Between them stood the standing stones, grey and leaning, arranged in a loose ring that she could not quite see the end of. She counted the first six and lost count at seven. The ground beyond them was carpeted in wildflowers. Foxgloves, clover, a pale blue scatter of harebells, all in full bloom. It was January. Frost should have been silvering every blade of grass. Instead the flowers opened their faces to the dark as if it were noon, and the air smelled of honey and wet stone. Rory stopped at the boundary and looked back. The trees behind her were there. She could see the gap in the oaks where she had come through. Her footprints marked the grass, dark where the dew had been crushed. She took out her phone. The screen showed 11:52, and then, when she looked again a moment later, 11:52 still, though the second hand she could not see moved at no speed she could measure. She switched it off. The battery icon had been full all evening. Now it read four percent, then dropped to two as she watched, and the screen went black before she could decide what to make of it. "Hello?" Her voice came out smaller than she meant. The flowers swallowed it. Nothing answered. Then, somewhere to her left, a sound: a soft, deliberate tap, like a fingernail against wood. Then another. Then a pause, and a third, nearer. She turned. The stones stood where they had been. The grass was still. But at the very edge of her vision, where the light from the flowers gave out, something pale slid behind a trunk. She did not see it so much as notice the absence of the dark where it had been, a shape the wrong height, too narrow, moving the way a person moves when they are trying not to be seen moving. She did not run. Some sensible part of her, the part that had argued her way out of two years of Pre-Law essays and one terrible marriage of a relationship, kept her feet planted and her breathing even. Running would make her a rabbit. Rabbits were easy. She walked toward the stone nearest her, slowly, keeping the trunk of the nearest oak in view. The pendant burned now, a steady warmth that pressed against her skin. Ahead, in the gap between two stones, the air had begun to shimmer, faintly, the way heat rises off tarmac in August. Through the shimmer she could make out a second ring of stones, identical to the first, but their tops were lost in a pale fog that did not move with the wind. *Hel portal*, something in her thought, unbidden, the phrase arriving from nowhere she could trace. The pendant pulsed once, hard, in answer. Then she heard the humming. It was low and tuneless, a woman's voice or something that had learned to be one, coming from the fog between the stones. It rose and fell. It seemed to be counting, though she could not make out the numbers. Somewhere behind her, closer now, the tapping resumed, in rhythm with the humming, as if whoever made it was keeping time. "Who's there?" she said. The humming stopped. The silence that followed was total. No insects, no wind in the oaks, no distant engine on the road she could no longer hear. Even her own pulse seemed to pause. Then, very softly, from directly behind her left shoulder, close enough that she felt a breath stir the hair at her neck, a voice said her name. Not Rory. Not Aurora. "Laila." Nobody had called her that since she was nine years old, and only one person had ever known to use it. Rory did not turn around. She fixed her eyes on the pale fog between the stones and felt the scar on her left wrist ache, the old crescent of it cold beneath her sleeve. Slowly, she lifted her hand and closed it around the Heartstone. It was hot enough to hurt, and it was pulling her forward.
created_at"2026-10-08T14:34:07.514Z" 10/8/2026, 2:34:07 PM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency14625
moderation_latency(null)
generation_time14625
tokens_prompt792
tokens_completion1409
native_tokens_prompt1172
native_tokens_completion2020
native_tokens_completion_images(null)
native_tokens_reasoning401
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"
usage0.0011272
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791470047-txTveGFgGNCFvvQt1vMO"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791470047-3jfThWEB5ZqOkwF4R2Ky"
upstream_id"msg_011CfpwCgzwq7fasZLG6QQzp"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpwCgzwq7fasZLG6QQzp"
is_byokfalse
latency891
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0011272
cache_discount(null)
upstream_inference_cost0
provider_name"Claude Platform on AWS"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags2
adverbTagCount0
adverbTags(empty)
dialogueSentences3
tagDensity0.667
leniency1
rawRatio0
effectiveRatio0
72.50% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount909
totalAiIsmAdverbs5
found
0
adverb"very"
count2
1
adverb"slowly"
count2
2
adverb"softly"
count1
highlights
0"very"
1"slowly"
2"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)
67.00% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount909
totalAiIsms6
found
0
word"weight"
count1
1
word"throbbed"
count1
2
word"warmth"
count1
3
word"pulsed"
count1
4
word"silence"
count1
5
word"pulse"
count1
highlights
0"weight"
1"throbbed"
2"warmth"
3"pulsed"
4"silence"
5"pulse"
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
narrationSentences70
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount2
narrationSentences70
filterMatches(empty)
hedgeMatches
0"seemed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences71
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen40
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans2
markdownWords19
totalWords909
ratio0.021
matches
0"Past the old oaks, where the ground stops being ground. Come alone. Come before the second bell."
1"Hel portal"
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions1
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions15
wordCount905
uniqueNames11
maxNameDensity0.44
worstName"Rory"
maxWindowNameDensity1
worstWindowName"Rory"
discoveredNames
Richmond1
Park1
Rory4
Golden1
Empress1
Yu-Fei1
Heartstone2
January1
Pre-Law1
August1
Aurora1
persons
0"Rory"
1"Yu-Fei"
2"Heartstone"
places
0"Richmond"
1"Park"
2"Golden"
3"August"
globalScore1
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences51
glossingSentenceCount1
matches
0"not quite see the end of"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount909
matches(empty)
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences71
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs21
mean43.29
std31.35
cv0.724
sampleLengths
077
175
252
3112
439
573
613
727
875
947
1083
1122
125
1361
144
153
1662
171
1821
1945
2012
85.21% Passive voice overuse
Target: ≤2% passive sentences
passiveCount4
totalSentences70
matches
0"been locked"
1"was carpeted"
2"been crushed"
3"were lost"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount2
totalVerbs137
matches
0"was keeping"
1"was pulling"
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount0
semicolonCount0
flaggedSentences0
totalSentences71
ratio0
matches(empty)
98.34% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount907
adjectiveStacks0
stackExamples(empty)
adverbCount38
adverbRatio0.04189636163175303
lyAdverbCount7
lyAdverbRatio0.007717750826901874
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences71
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences71
mean12.8
std9.67
cv0.756
sampleLengths
018
126
26
327
48
510
62
738
817
911
1013
1119
129
134
1420
1523
1610
178
1812
193
209
2123
228
236
2413
2512
265
2730
284
298
3026
319
324
332
3416
352
367
372
387
394
4022
4140
424
4334
446
453
4617
4712
4822
4932
59.62% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats11
diversityRatio0.4507042253521127
totalSentences71
uniqueOpeners32
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount10
totalSentences63
matches
0"Then she had felt the"
1"Usually it was cool, a"
2"Instead the flowers opened their"
3"Then, somewhere to her left,"
4"Then a pause, and a"
5"Then she heard the humming."
6"Somewhere behind her, closer now,"
7"Even her own pulse seemed"
8"Then, very softly, from directly"
9"Slowly, she lifted her hand"
ratio0.159
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount17
totalSentences63
matches
0"She pressed her hand over"
1"They were enormous, older than"
2"She counted the first six"
3"It was January."
4"She could see the gap"
5"Her footprints marked the grass,"
6"She took out her phone."
7"She switched it off."
8"Her voice came out smaller"
9"She did not see it"
10"She did not run."
11"She walked toward the stone"
12"It was low and tuneless,"
13"It rose and fell."
14"It seemed to be counting,"
15"She fixed her eyes on"
16"It was hot enough to"
ratio0.27
100.00% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount44
totalSentences63
matches
0"The gate at the edge"
1"The iron was cold under"
2"Nobody had seen her do"
3"The road beyond the trees"
4"The directions in the letter"
5"The Heartstone hung on its"
6"She pressed her hand over"
7"The oaks came first."
8"They were enormous, older than"
9"She counted the first six"
10"The ground beyond them was"
11"Foxgloves, clover, a pale blue"
12"It was January."
13"Frost should have been silvering"
14"Rory stopped at the boundary"
15"The trees behind her were"
16"She could see the gap"
17"Her footprints marked the grass,"
18"She took out her phone."
19"The screen showed 11:52, and"
ratio0.698
100.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount2
totalSentences63
matches
0"Now it throbbed with a"
1"Now it read four percent,"
ratio0.032
83.33% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences36
technicalSentenceCount3
matches
0"Some sensible part of her, the part that had argued her way out of two years of Pre-Law essays and one terrible marriage of a relationship, kept her feet plante…"
1"It was low and tuneless, a woman's voice or something that had learned to be one, coming from the fog between the stones."
2"Somewhere behind her, closer now, the tapping resumed, in rhythm with the humming, as if whoever made it was keeping time."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags2
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags1
fancyCount0
fancyTags(empty)
dialogueSentences3
tagDensity0.333
leniency0.667
rawRatio0
effectiveRatio0
95.5335%