Run: 2026-09-23-01M37Q6VFDVGMY73DS86J7F8X4

Run Details

Duration:
49.1s
Cost:
$0.070808
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 on Sawyer's Hill had been locked since dusk, but the fence beside it sagged where someone had leaned on it for years, and Rory went over it with her delivery bag still slung across her back out of habit. She'd left the bike chained outside the Roehampton gate. It felt wrong to bring it any further, as if it belonged to a part of her life that shouldn't come with her. The pendant had started warming around half ten, somewhere between a flat in Putney and a lamb-and-black-bean order that had gone cold because she'd stopped at a red light and pressed her palm flat against her sternum, feeling the Heartstone throb through her jumper like a second pulse. Faint, then not faint. It had never done that more than a few seconds at a time. Tonight it hadn't stopped. So here she was. Richmond Park at midnight, November, her breath smoking in front of her and the grass silvered with early frost. She knew the way. She'd walked it twice in daylight, and both times she'd come out of the trees to find the sun in the wrong place in the sky. She checked her phone now. 00:14. One bar of signal. Battery at sixty-one percent. She made herself remember the numbers. The deer were out. She could hear them before she saw them, the heavy, careless shuffle of big bodies through bracken, and then the shapes resolved: a loose herd of does on the slope to her left, heads down, grazing. One raised its head as she passed. Then another. Then all of them, together, the way a crowd turns at a noise. They weren't looking at her. They were looking past her, toward the trees she was walking into. Rory kept walking. The ground dipped, and the path, such as it was, threaded between hawthorns into older wood. The city's glow faded behind her, that dull orange smear London puts on every night, and the dark closed in blue-black and complete. She didn't turn on her torch. The first time she'd come here, the woman in the grove had told her lights were rude. Rory had thought she was joking. She smelled the flowers before she reached the stones. It hit her like walking into a warm kitchen, honeysuckle and meadowsweet and something green and crushed, absurd in the frost. Then the trees thinned and the first of the standing stones rose out of the dark. They weren't stone at all. They were oak, ancient oak, trunks worn smooth and grey as bone, each one taller than a man and leaning slightly inward like people bending over a cot. She passed between two of them, and the cold went away. Not gradually. It simply stopped, the way sound stops when you step into a car and shut the door. The air in the clearing was mild and still. Wildflowers came up to her shins, pale in the starlight: foxglove, campion, oxeye daisies that should have died back in September. Somewhere at the centre of the grove, water was moving, though she had never found a stream. "Hello?" she said, and hated how small it came out. Nothing answered. The water kept moving. Rory stood still and let her eyes adjust. The Heartstone was properly hot now, not burning, but insistent, and she closed her left hand around it through the fabric. The small crescent scar on her wrist pulled tight when she made a fist. She'd always been able to feel that scar in the cold. She could feel it now, and it wasn't cold. She counted the oaks, because counting was something to do. Eleven. She'd counted eleven last time, too. She remembered, because she'd wondered why not twelve, why not a proper number. A bicycle bell rang behind her. Two quick trills. Bright, tinny, unmistakable. The exact sound of the bell on her own bike, the one with the dent in the dome where she'd dropped it outside the Golden Empress her first week. She turned. Nothing but the gap between the oaks and the black wood beyond. Her bike was a mile away, chained to a railing. She knew that. She'd checked the lock twice. She did not call out again. She made herself walk the edge of the clearing, keeping the oaks on her right, because standing still felt like being looked at. The flowers brushed her jeans. Each step released another breath of scent, thick, almost cloying, like a bouquet left too long in its water. Her footsteps made soft sounds in the growth. After a dozen paces she realised there were more footsteps than there should have been. Not many more. Not loud. Just a softness following her own, a half-beat late, like an echo in a room with no walls to make one. When she walked, it walked. When she stopped, it took one more step, and then it stopped too. Rory's heart was going hard enough that she could feel it in her teeth. She kept her face forward. Something her father used to say from the courtroom came to her unbidden: *never show a witness you've been surprised.* She breathed through her nose. She took out her phone, as if to check the time, and angled the dark screen so she could see behind her in the reflection. Flowers. Oaks. The glassy dark of the gap. The screen woke under her thumb. 00:14. She stared at it. She'd been walking for ten minutes at least. More. She watched the numbers, and they didn't change, and they didn't change, and then they read 03:52 and her battery read nineteen percent, and the one bar of signal was gone. She put the phone away very carefully, the way you'd set down something that might go off. Somewhere to her left, at the very corner of her eye, one of the oaks moved. Not swayed. There was no wind. It *shifted*, the way a person shifts their weight when they've been standing too long. When she turned her head it was still, grey, bone-smooth, leaning in with the others. She counted again, lips moving silently. Twelve. She counted a third time, slower, touching each with her eyes. Twelve. The new one stood between the fourth and fifth, where there had been a gap wide enough to walk through. It was the same height as the others. The same pale, worn grey. It leaned inward exactly as they did. Only its lean was toward her. The water sound had stopped. She didn't know when. The grove was so quiet now she could hear the faint tick of the pendant's chain against her collarbone as her chest rose and fell. And under that, something else, so low she thought at first it was her own blood in her ears. Breathing. Slow. Deep. Patient. In, and a long pause, and out. Rory held her own breath to be sure. It went on without her. She was aware, in the cool, precise part of her mind that had always gotten her through the worst of things, the part that had packed a bag while Evan slept and walked to Cardiff Central without looking back, that she had options. The gap she'd come in through was behind her and to the right. Twenty paces. Maybe twenty-five. She knew it was there because she knew it was there, and she would not look at it, because she had a sudden and total certainty that if she looked she would find it closed. The Heartstone throbbed against her palm, hot, hot, like something alive trying to get out of her fist. "Aurora." The voice came from the far side of the clearing, from somewhere low among the foxgloves. It was her mother's voice. Not a close copy. *Her mother's voice*, the soft Valleys lilt on the second syllable, the exact tired warmth of Jennifer Carter calling her in from the garden when the streetlights came on. Nobody in London called her Aurora like that. Nobody in London knew how. "Aurora, love. Come here and let me see you." Rory's eyes stung. She didn't move. Something in the flowers moved instead. She couldn't see it, only the flowers themselves bending, a slow furrow parting the pale heads of the daisies, coming toward her across the grove at a walking pace. No shape. No sound but the whisper of stems and that long, patient breathing, getting closer. She took a step back. The furrow didn't hurry. It didn't need to. Then she saw the flowers. All of them. Every foxglove bell, every campion, every white-rayed daisy in the grove. She'd walked past them facing the sky, the way flowers face the sun even at night. They weren't facing the sky anymore. They had turned, silently, every one, and they were facing her. The breathing stopped just in front of her, close enough that the daisies at her feet trembled. And the bicycle bell rang again, twice, bright and cheerful, from somewhere right behind her ear.
created_at"2026-09-23T18:07:23.652Z" 9/23/2026, 6:07:23 PM
model"anthropic/claude-opus-5.5-20260921"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4669
moderation_latency(null)
generation_time49009
tokens_prompt792
tokens_completion2378
native_tokens_prompt1172
native_tokens_completion3306
native_tokens_completion_images(null)
native_tokens_reasoning572
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"
usage0.070808
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790186843-XkuEzqJTfDTzrntm2Gcw"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790186843-NGAcJlr6abdpuHWS9Nbs"
upstream_id"msg_011CfLpLDBg4YNUvtMf9MoPV"
provider_responses
0
endpoint_id"3a2388bc-3740-4e64-a1f5-4e301726b6b9"
id"msg_011CfLpLDBg4YNUvtMf9MoPV"
is_byokfalse
latency1277
model_permaslug"anthropic/claude-opus-5.5-20260921"
provider_name"Claude Platform on AWS"
status200
total_cost0.070808
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
totalTags1
adverbTagCount0
adverbTags(empty)
dialogueSentences3
tagDensity0.333
leniency0.667
rawRatio0
effectiveRatio0
86.73% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1507
totalAiIsmAdverbs4
found
0
adverb"slightly"
count1
1
adverb"very"
count2
2
adverb"carefully"
count1
highlights
0"slightly"
1"very"
2"carefully"
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)
53.55% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1507
totalAiIsms14
found
0
word"throb"
count1
1
word"pulse"
count1
2
word"resolved"
count1
3
word"could feel"
count2
4
word"footsteps"
count2
5
word"echo"
count1
6
word"weight"
count1
7
word"throbbed"
count1
8
word"lilt"
count1
9
word"warmth"
count1
10
word"whisper"
count1
11
word"trembled"
count1
highlights
0"throb"
1"pulse"
2"resolved"
3"could feel"
4"footsteps"
5"echo"
6"weight"
7"throbbed"
8"lilt"
9"warmth"
10"whisper"
11"trembled"
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
narrationSentences140
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount0
narrationSentences140
filterMatches(empty)
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences142
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen51
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans3
markdownWords11
totalWords1507
ratio0.007
matches
0"never show a witness you've been surprised."
1"shifted"
2"Her mother's voice"
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
totalMentions29
wordCount1496
uniqueNames19
maxNameDensity0.47
worstName"Rory"
maxWindowNameDensity1
worstWindowName"Rory"
discoveredNames
Sawyer1
Hill1
Rory7
Roehampton1
Putney1
Heartstone3
Park1
November1
London3
September1
Golden1
Empress1
Evan1
Cardiff1
Central1
Valleys1
Jennifer1
Carter1
Aurora1
persons
0"Sawyer"
1"Hill"
2"Rory"
3"Heartstone"
4"Evan"
5"Jennifer"
6"Carter"
7"Aurora"
places
0"Roehampton"
1"Putney"
2"Park"
3"London"
4"September"
5"Golden"
6"Cardiff"
globalScore1
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences83
glossingSentenceCount1
matches
0"felt like being looked at"
67.29% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches2
per1kWords1.327
wordCount1507
matches
0"not burning, but insistent"
1"No sound but"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount2
totalSentences142
matches
0"feel that scar"
1"back, that she"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs50
mean30.14
std25.79
cv0.856
sampleLengths
073
169
223
350
462
517
63
768
879
911
1066
1110
126
1363
1430
156
1635
1732
186
1955
2015
2144
2269
238
247
2544
2617
2716
2842
291
3052
316
3253
331
3410
358
365
3795
3818
391
4067
419
426
4351
4413
455
4636
4711
4817
4916
92.73% Passive voice overuse
Target: ≤2% passive sentences
passiveCount5
totalSentences140
matches
0"been locked"
1"was, threaded"
2"being looked"
3"been surprised"
4"was gone"
3.09% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount7
totalVerbs237
matches
0"weren't looking"
1"were looking"
2"was walking"
3"was joking"
4"was going"
5"weren't facing"
6"were facing"
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount0
semicolonCount0
flaggedSentences0
totalSentences142
ratio0
matches(empty)
90.63% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1505
adjectiveStacks1
stackExamples
0"grey, bone-smooth, leaning"
adverbCount66
adverbRatio0.043853820598006646
lyAdverbCount11
lyAdverbRatio0.007308970099667774
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences142
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences142
mean10.61
std9.45
cv0.891
sampleLengths
041
19
223
348
44
513
64
74
819
94
1026
115
121
134
144
156
164
1736
187
192
2013
215
2212
233
2416
2523
266
2717
286
299
3021
3116
325
3328
3411
352
3617
379
3821
3917
4010
412
424
438
4421
4514
4611
479
4810
491
39.76% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats21
diversityRatio0.32857142857142857
totalSentences140
uniqueOpeners46
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount8
totalSentences119
matches
0"Then all of them, together,"
1"Then the trees thinned and"
2"Somewhere at the centre of"
3"Bright, tinny, unmistakable."
4"Just a softness following her"
5"Somewhere to her left, at"
6"Only its lean was toward"
7"Then she saw the flowers."
ratio0.067
41.85% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount53
totalSentences119
matches
0"She'd left the bike chained"
1"It felt wrong to bring"
2"It had never done that"
3"She knew the way."
4"She'd walked it twice in"
5"She checked her phone now."
6"She made herself remember the"
7"She could hear them before"
8"They weren't looking at her."
9"They were looking past her,"
10"She didn't turn on her"
11"She smelled the flowers before"
12"It hit her like walking"
13"They weren't stone at all."
14"They were oak, ancient oak,"
15"She passed between two of"
16"It simply stopped, the way"
17"she said, and hated how"
18"She'd always been able to"
19"She could feel it now,"
ratio0.445
65.04% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount94
totalSentences119
matches
0"The gate on Sawyer's Hill"
1"She'd left the bike chained"
2"It felt wrong to bring"
3"The pendant had started warming"
4"It had never done that"
5"Tonight it hadn't stopped."
6"Richmond Park at midnight, November,"
7"She knew the way."
8"She'd walked it twice in"
9"She checked her phone now."
10"Battery at sixty-one percent."
11"She made herself remember the"
12"The deer were out."
13"She could hear them before"
14"They weren't looking at her."
15"They were looking past her,"
16"Rory kept walking."
17"The ground dipped, and the"
18"The city's glow faded behind"
19"She didn't turn on her"
ratio0.79
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences119
matches(empty)
ratio0
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences57
technicalSentenceCount3
matches
0"The pendant had started warming around half ten, somewhere between a flat in Putney and a lamb-and-black-bean order that had gone cold because she'd stopped at …"
1"Wildflowers came up to her shins, pale in the starlight: foxglove, campion, oxeye daisies that should have died back in September."
2"She was aware, in the cool, precise part of her mind that had always gotten her through the worst of things, the part that had packed a bag while Evan slept and…"
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags1
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
84.6890%