Run: 2026-10-08-01M4DYK3K8ZASGX0ND07D9MA2W

Run Details

Duration:
14.0s
Cost:
$0.001059
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 had been locked, so Rory climbed it. The iron spikes along the top caught the hem of her coat, and she freed it with a sharp tug and dropped onto the wet grass on the far side. Behind her, Richmond Park lay under a thin moon, the bracken black and the bare trees standing in ranks like people waiting for a bus that wasn't coming. She had told no one where she was going. That had been a choice, and she was starting to suspect it had been a sensible one. The message had arrived at 4:12 that afternoon, between a lunch order for the Golden Empress and a text from Silas asking whether she was alive. No sender. Just a set of coordinates, a time, and one line: *Bring the pendant.* She touched it now through the wool of her coat, the silver chain cool against her collarbone and the stone beneath her fingers. The Heartstone. Deep crimson, the size of her thumbnail, given to her by someone who had never signed their name. For months it had been an oddity in a drawer. Tonight it had been warm since she left the Tube. She followed the phone's torch along a path of packed earth, then off it, where the trail narrowed and the bracken closed in around her knees. The coordinates led her east, toward a rise in the land she had walked past a dozen times in daylight and never once noticed. The air changed as she climbed. It grew still, the way a room does when someone has just stopped speaking. At the crest, the stones stood waiting. They were oak, or had been once. Seven of them formed a rough ring, each taller than a man and split with age, bark gone silver and furred with moss. Between them, the grass gave way to wildflowers. Foxglove, a pale blue she didn't have a name for, clusters of white campion. Rory stopped at the edge of the ring and stared. It was November. Half the trees in the park were already bare, and yet the blooms here were open and heavy with dew, as if someone had watered them that morning. She checked her watch. 11:38. She had left the flat at a quarter past nine. Surely the walk hadn't taken two and a half hours. She checked again, and the hands had not moved. "Hello?" Her voice came out smaller than she intended. The grove took it and gave nothing back. She stepped between two stones. The warmth at her throat rose, a slow, steady pulse like a second heartbeat. She told herself it was the cold making her imagine things. She told herself a lot of things on the walk up. Somewhere to her left, a branch cracked. Not the snap of a dead limb underfoot, but a sound with weight to it, deliberate, the way a person shifts their weight when they don't want to be heard but have forgotten to be quiet. Rory turned slowly. The torch beam swept across the grass and the flowers and the dark trunks. Nothing. A deer, perhaps. Richmond was full of them. She had seen them at dusk, their great heads lifting from the bracken to watch the traffic on the road. She waited. Her breath clouded and drifted away between the stones. The grove was too quiet now. No owl, no wind in the high branches, no distant hum of the A3. Even the sound of her own heartbeat seemed to have gone somewhere else. Then, at the edge of her vision, something moved. She didn't look at it directly. She had learned that in the flat, years ago, when she had lain awake listening for footsteps on the stairs. You never looked straight at the thing that wasn't there. You kept your eyes on the middle distance and let the movement pass through the corner of your sight. A pale shape, tall, folding itself back behind the nearest stone the way a shadow folds when a lamp is moved. Her left wrist ached along the old crescent scar, a dull memory of metal and blood from when she was nine. She pressed her thumb against it and forced her voice steady. "I came because I was asked to," she said. "I'm here. So you can stop pretending you're not." Silence. Then, from behind the stone, very softly, a sound like someone humming a tune she half recognised. It stopped as soon as she named it to herself. The pendant was burning now, not painfully, but insistently, pressing against her skin like a hand. She lifted it free of her collar and held it in her palm. In the torchlight the crimson stone looked almost black, and the faint inner glow that had always been there had brightened, as if something behind it had turned to face her. Rory understood, with a cold clarity she distrusted, that the stone had not been warming because of the grove. It had been warming because of what was coming. Behind her, the grass whispered. Not a footfall. Something drawing slowly across the ground, closer, patient, as though it had all the time in the world, and the grove, she was beginning to suspect, had nothing but. She did not run. Not yet. She turned, very carefully, toward the sound, and lifted the stone in her fist like a lantern.
created_at"2026-10-08T14:27:33.617Z" 10/8/2026, 2:27:33 PM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2397
moderation_latency(null)
generation_time13969
tokens_prompt792
tokens_completion1315
native_tokens_prompt1172
native_tokens_completion1883
native_tokens_completion_images(null)
native_tokens_reasoning289
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"
usage0.0010587
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791469653-DPJ9AFDlDB14tt9fap4M"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791469653-kgAaoiQuwjNvI7UhfHpe"
upstream_id"msg_011CfpvhezaxNtoaRSThDBQA"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpvhezaxNtoaRSThDBQA"
is_byokfalse
latency854
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0010587
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
66.78% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount903
totalAiIsmAdverbs6
found
0
adverb"slowly"
count2
1
adverb"very"
count2
2
adverb"softly"
count1
3
adverb"carefully"
count1
highlights
0"slowly"
1"very"
2"softly"
3"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)
61.24% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount903
totalAiIsms7
found
0
word"warmth"
count1
1
word"pulse"
count1
2
word"weight"
count2
3
word"footsteps"
count1
4
word"silence"
count1
5
word"footfall"
count1
highlights
0"warmth"
1"pulse"
2"weight"
3"footsteps"
4"silence"
5"footfall"
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
narrationSentences72
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount1
narrationSentences72
filterMatches
0"watch"
hedgeMatches
0"seemed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences73
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen36
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans1
markdownWords3
totalWords903
ratio0.003
matches
0"Bring the pendant."
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
totalMentions14
wordCount886
uniqueNames10
maxNameDensity0.45
worstName"Rory"
maxWindowNameDensity1
worstWindowName"Rory"
discoveredNames
Rory4
Richmond2
Park1
Golden1
Empress1
Silas1
Heartstone1
Tube1
November1
Silence1
persons
0"Rory"
1"Silas"
places
0"Richmond"
1"Park"
globalScore1
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences55
glossingSentenceCount0
matches(empty)
0.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches2
per1kWords2.215
wordCount903
matches
0"Not the snap of a dead limb underfoot, but a sound with weight to it, deliberate, the way a person shif"
1"not painfully, but insistently, pressing against her skin like a hand"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences73
matches
0"distrusted, that the"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs23
mean39.26
std22.76
cv0.58
sampleLengths
067
126
241
363
470
57
693
734
817
941
1043
1146
1244
139
1476
1532
1618
1728
1860
1919
209
2137
2223
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount1
totalSentences72
matches
0"been locked"
0.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount6
totalVerbs135
matches
0"wasn't coming"
1"was going"
2"was starting"
3"was burning"
4"was coming"
5"was beginning"
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount0
semicolonCount0
flaggedSentences0
totalSentences73
ratio0
matches(empty)
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount886
adjectiveStacks0
stackExamples(empty)
adverbCount30
adverbRatio0.033860045146726865
lyAdverbCount8
lyAdverbRatio0.009029345372460496
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences73
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences73
mean12.37
std8.32
cv0.673
sampleLengths
09
130
228
39
417
526
62
713
823
92
1018
1110
1210
1326
1424
156
1614
177
187
1923
208
2114
2210
233
2428
254
261
2710
2810
299
309
318
325
3314
3411
3511
367
3736
383
3914
401
413
425
4320
442
459
466
4714
4813
499
62.96% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats8
diversityRatio0.4444444444444444
totalSentences72
uniqueOpeners32
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount6
totalSentences64
matches
0"Just a set of coordinates,"
1"Surely the walk hadn't taken"
2"Somewhere to her left, a"
3"Even the sound of her"
4"Then, at the edge of"
5"Then, from behind the stone,"
ratio0.094
57.50% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount26
totalSentences64
matches
0"She had told no one"
1"She touched it now through"
2"She followed the phone's torch"
3"It grew still, the way"
4"They were oak, or had"
5"It was November."
6"She checked her watch."
7"She had left the flat"
8"She checked again, and the"
9"Her voice came out smaller"
10"She stepped between two stones."
11"She told herself it was"
12"She told herself a lot"
13"She had seen them at"
14"Her breath clouded and drifted"
15"She didn't look at it"
16"She had learned that in"
17"You never looked straight at"
18"You kept your eyes on"
19"Her left wrist ached along"
ratio0.406
100.00% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount46
totalSentences64
matches
0"The gate had been locked,"
1"The iron spikes along the"
2"She had told no one"
3"That had been a choice,"
4"The message had arrived at"
5"She touched it now through"
6"Tonight it had been warm"
7"She followed the phone's torch"
8"The coordinates led her east,"
9"The air changed as she"
10"It grew still, the way"
11"They were oak, or had"
12"Foxglove, a pale blue she"
13"Rory stopped at the edge"
14"It was November."
15"She checked her watch."
16"She had left the flat"
17"She checked again, and the"
18"Her voice came out smaller"
19"The grove took it and"
ratio0.719
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences64
matches(empty)
ratio0
71.43% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences40
technicalSentenceCount4
matches
0"Behind her, Richmond Park lay under a thin moon, the bracken black and the bare trees standing in ranks like people waiting for a bus that wasn't coming."
1"Deep crimson, the size of her thumbnail, given to her by someone who had never signed their name."
2"In the torchlight the crimson stone looked almost black, and the faint inner glow that had always been there had brightened, as if something behind it had turne…"
3"Something drawing slowly across the ground, closer, patient, as though it had all the time in the world, and the grove, she was beginning to suspect, had nothin…"
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
83.9970%