Run: 2026-10-08-01M4DA4JVJKNZW7BTQ0S4ZX6JP

Run Details

Duration:
12.7s
Cost:
$0.001018
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 park gates had been locked when Rory reached them, so she climbed the low fence beside the old oak and dropped onto the grass with her boots slipping in the wet. Richmond at midnight smelled of cut bracken and cold earth. The deer had gone quiet somewhere past the tree line. She stood still until her breathing settled, then pulled her coat tighter and checked the phone in her pocket. 11:52. No signal. She had expected that. The directions had come in a plain envelope tucked under the door of the flat above Silas' bar, no stamp, no return address. Three lines in careful handwriting: *Follow the path past the bridge. Count seven oaks. Step through on the stroke of midnight, and bring nothing that was not given to you.* She had almost thrown it out. Instead she had read it twice, then touched the pendant at her throat, the one she had never managed to take off since the day it arrived. Now the silver chain lay cool against her collarbone. Then, as she walked, it began to warm. It was small at first, a pressure no larger than a fingertip, the way a hand feels when someone rests it near your skin without touching. Rory slowed. The crimson stone pulsed once, faint and steady, like a heartbeat heard through a wall. She pressed her thumb against it through the wool of her scarf. *Near a Hel portal*, the benefactor's note had said nothing about that. She had looked it up at two in the morning, half-convinced she was wasting her time, and found only a scatter of folklore and a forum thread that had been deleted. Still, she knew what warmth meant when it came from a stone. She had felt it once before, in the grove, and had walked out with her hair full of clover and no memory of the hours in between. She counted the oaks. One. Two. The path curved, and the trees thickened on either side, their trunks grey and split with age. Three. Four. The air changed around the fifth tree. It didn't become colder so much as heavier, the way a room feels after someone has just left it. Five. Six. A sound came from her left, low and rhythmic. Tap. A pause. Tap. Rory turned her head. There was nothing there but the dark shapes of bracken and the pale band of the path. The sound came again, closer to the ground now, as if something small were knocking on a hollow log in time with her own footsteps. She stopped walking. The knocking stopped with her. *Deer*, she told herself. *Badgers. Someone's dog.* She started forward. The knocking started again, a half-beat behind. The seventh oak stood at the edge of a clearing, and the moment she saw its trunk she knew it was the right one. Its bark had been carved, long ago, with a ring of small marks, each one worn nearly smooth. Between the roots, wildflowers bloomed in the moonlight, white and violet and a yellow so bright it looked painted. It was October. There should have been nothing blooming at all. Rory crouched and touched one of the petals. It was cool and damp and perfectly real. Something moved at the edge of her vision. She did not turn her head. She had learned that much in the years since Evan, that the instinct to look straight at a threat only handed it the advantage. Instead she let her eyes drift sideways, slowly, and watched the far edge of the clearing from the corner of her eye. The standing stones there were taller than she had thought. Their shadows fell in the wrong direction for the moon's position. Between two of them, the dark seemed to thicken into a shape that was not quite tall enough to be a man and not quite low enough to be a fox. It was gone when she looked directly. It was there again, two stones over, when she looked away. Her watch had stopped. She noticed that now, her wrist cold where the crescent scar sat pale against her skin. The second hand hung motionless on the twelve. The phone in her pocket, when she slid it out with trembling fingers, showed 11:52 still, though she had been walking for what felt like a quarter hour, perhaps more. The pendant burned against her chest now. Not painfully. Insistently. Like something trying to get her attention. Behind her, very close, a voice said her name. It was not Eva's voice, or her mother's, or Evan's. It was soft and patient and sounded almost fond. "Aurora," it said again, "you came back." She had never told anyone where she had been that night. She had never told anyone her middle name was Laila, either. Rory did not answer. She did not run. She stood up slowly, the chain tight against the back of her neck, and kept her eyes on the flowers at her feet, where the tapping had started again, patient and perfectly in time with her heart.
created_at"2026-10-08T08:30:06.202Z" 10/8/2026, 8:30:06 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency12641
moderation_latency(null)
generation_time12641
tokens_prompt792
tokens_completion1314
native_tokens_prompt1172
native_tokens_completion1801
native_tokens_completion_images(null)
native_tokens_reasoning290
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"
usage0.0010177
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791448206-AX7BCMeh5wMYpZiCHBwd"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791448206-6IQRSmMdLfBzuFCdlXMT"
upstream_id"msg_011CfpTSfnu52t92A2B99Dpe"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpTSfnu52t92A2B99Dpe"
is_byokfalse
latency840
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0010177
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
0.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags2
adverbTagCount1
adverbTags
0"it said again [again]"
dialogueSentences1
tagDensity1
leniency1
rawRatio0.5
effectiveRatio0.5
70.59% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount850
totalAiIsmAdverbs5
found
0
adverb"perfectly"
count2
1
adverb"slowly"
count2
2
adverb"very"
count1
highlights
0"perfectly"
1"slowly"
2"very"
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)
76.47% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount850
totalAiIsms4
found
0
word"pulsed"
count1
1
word"warmth"
count1
2
word"rhythmic"
count1
3
word"footsteps"
count1
highlights
0"pulsed"
1"warmth"
2"rhythmic"
3"footsteps"
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
narrationSentences79
matches(empty)
70.52% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount3
narrationSentences79
filterMatches
0"watch"
hedgeMatches
0"managed to"
1"began to"
2"seemed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences79
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen37
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans4
markdownWords33
totalWords850
ratio0.039
matches
0"Follow the path past the bridge. Count seven oaks. Step through on the stroke of midnight, and bring nothing that was not given to you."
1"Near a Hel portal"
2"Deer"
3"Badgers. Someone's dog."
41.67% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions3
unquotedAttributions1
matches
0"*Deer*, she told herself."
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions13
wordCount839
uniqueNames7
maxNameDensity0.6
worstName"Rory"
maxWindowNameDensity1
worstWindowName"Rory"
discoveredNames
Rory5
Three2
Hel1
October1
Evan2
Eva1
Laila1
persons
0"Rory"
1"Three"
2"Evan"
3"Eva"
4"Laila"
places
0"Hel"
globalScore1
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences50
glossingSentenceCount1
matches
0"felt like a quarter hour, perhaps more"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount850
matches(empty)
82.28% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount2
totalSentences79
matches
0"learned that much"
1"been that night"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs20
mean42.5
std30.55
cv0.719
sampleLengths
078
186
217
355
482
551
62
767
87
910
1072
1116
128
13104
1418
1558
1617
1735
1822
1945
87.50% Passive voice overuse
Target: ≤2% passive sentences
passiveCount4
totalSentences79
matches
0"been locked"
1"been deleted"
2"been carved"
3"was gone"
95.83% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount2
totalVerbs128
matches
0"was wasting"
1"were knocking"
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount0
semicolonCount0
flaggedSentences0
totalSentences79
ratio0
matches(empty)
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount95
adjectiveStacks0
stackExamples(empty)
adverbCount3
adverbRatio0.031578947368421054
lyAdverbCount0
lyAdverbRatio0
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences79
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences79
mean10.76
std9.16
cv0.851
sampleLengths
032
110
210
319
41
52
64
723
811
93
1022
1127
129
138
1426
152
1615
1712
1812
1931
2012
2127
224
231
241
2517
261
271
287
2919
301
311
329
331
342
351
364
3717
3825
393
405
414
421
432
443
457
4624
4718
4819
493
63.25% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats9
diversityRatio0.44871794871794873
totalSentences78
uniqueOpeners35
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount3
totalSentences63
matches
0"Instead she had read it"
1"Then, as she walked, it"
2"Instead she let her eyes"
ratio0.048
48.57% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount27
totalSentences63
matches
0"She stood still until her"
1"She had expected that."
2"It was small at first,"
3"She pressed her thumb against"
4"She had looked it up"
5"She had felt it once"
6"She counted the oaks."
7"It didn't become colder so"
8"She stopped walking."
9"She started forward."
10"Its bark had been carved,"
11"It was October."
12"It was cool and damp"
13"She did not turn her"
14"She had learned that much"
15"Their shadows fell in the"
16"It was gone when she"
17"It was there again, two"
18"Her watch had stopped."
19"She noticed that now, her"
ratio0.429
71.11% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount49
totalSentences63
matches
0"The park gates had been"
1"Richmond at midnight smelled of"
2"The deer had gone quiet"
3"She stood still until her"
4"She had expected that."
5"The directions had come in"
6"It was small at first,"
7"The crimson stone pulsed once,"
8"She pressed her thumb against"
9"She had looked it up"
10"She had felt it once"
11"She counted the oaks."
12"The path curved, and the"
13"The air changed around the"
14"It didn't become colder so"
15"A sound came from her"
16"Rory turned her head."
17"The sound came again, closer"
18"She stopped walking."
19"The knocking stopped with her."
ratio0.778
79.37% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount1
totalSentences63
matches
0"Now the silver chain lay"
ratio0.016
99.57% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences33
technicalSentenceCount2
matches
0"She had looked it up at two in the morning, half-convinced she was wasting her time, and found only a scatter of folklore and a forum thread that had been delet…"
1"The sound came again, closer to the ground now, as if something small were knocking on a hollow log in time with her own footsteps."
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)
dialogueSentences1
tagDensity1
leniency1
rawRatio0
effectiveRatio0
86.2241%