Run: 2026-10-08-01M4DA0NWPA8MN6ZK6CK9843SE

Run Details

Duration:
12.9s
Cost:
$0.000987
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 in the park wall had been left open, which was the first thing Rory did not like. Richmond Park closed its gates at dusk, and the keeper's padlock hung from the iron bars, shining in her torchlight, unlocked and swinging a little in the wind. She stood there for a long moment with her hand on the cold metal, then pushed through. The path ran straight for a hundred yards between bracken taller than her shoulders. After that it simply stopped being a path. The bracken gave way to grass, and the grass to a ring of standing stones, grey-green and furred with moss, each one wider than a man's arm span. Oaks rose behind them, black against a sky that had no moon. She had been told to come alone. She had been told not to bring a phone, and she had brought one anyway, switched off, in the inside pocket of her coat. Its weight was reassuring. So was the small pressure of the chain against her collarbone, the Heartstone resting under her shirt where it always rested. Rory stopped at the boundary and waited for her eyes to adjust. The torch beam fell across the grass inside the circle, and she saw flowers. Foxgloves. Clover. A scatter of pale blue harebells. It was late October. Every flower in that clearing was in full bloom, dew beaded on the petals, and not one of them had any business being alive. *Wildflowers bloom year-round,* Isolde had written in the letter. *Do not be startled.* She had not been startled. She had been curious, and then she had been stubborn, and now, standing with one foot inside the stones, she was something else entirely. She clicked the torch off. The dark came down like a lid. For several seconds she could see nothing at all. Then the starlight returned, thin and silver, and the clearing came back into focus, and she realised she could hear the wind had stopped. She had not noticed when it stopped. That was the worst part. There was no sound from the oaks, no rustle from the bracken beyond the stones, no distant traffic from the road. Only her own breathing, and the faint, steady tick of her wristwatch. She looked at the watch. The second hand was moving. The hour hand said twenty past nine. She had left the car at a quarter to. Rory swallowed and stepped inside the circle. The pendant warmed against her skin. It was not the sudden heat of a hand pressed to her chest. It was slow and deliberate, a gentle throb, like something sleeping and turning over. She had felt it do this twice before, both times near places she had later wished she'd stayed away from. She pressed her palm flat over her sternum and kept walking toward the centre of the ring, where the grass was flattened and pale, as if something large had lain there recently. Movement at the edge of her vision. She turned her head. Nothing. A stone, a shadow between two stones, the dark trunk of an oak. She told herself she had imagined it. She kept her eyes on the middle distance, the way her father had taught her to watch a witness across a courtroom, and she counted her breaths. Four. Five. Six. A sound from behind her. Soft, rhythmic. Like someone pacing the ring at a measured distance, bare feet on damp moss. She stopped. The sound stopped. "Hello?" Her voice came out smaller than she meant it to. Nothing answered. The harebells swayed though there was no breeze. Then they were still again. She turned slowly, scar-pale wrist brushing her coat, and made herself look at each stone in turn. The third one from her left had something carved into it she had not seen before, a spiral of lines that seemed to shift when she stared at it, the way a word does when you repeat it too many times. She looked away. When she looked back, the spiral was just moss. Her mouth was dry. She thought of Eva, who had begged her not to come, and of the envelope with its unsigned note, and of the fact that she had been prepared for a lie or a trap, for a man with a knife, for a cruel joke at her expense. She had not been prepared for this kind of quiet, where every natural sound had been taken away and left something listening in its place. The pendant pulsed again, hotter now. Closer to the centre of the ring, the warmth was almost painful. She knew, with a cold certainty that settled in her stomach, that whatever she had come to find was not going to appear simply because she had waited long enough. Something was standing at the edge of the stones. She could feel it the way you feel a window open in a room you thought was empty. The air shifted against her face, cool and faintly sweet, like lilies left too long in a vase. She did not turn around. "I came because you asked me to," she said quietly. "So say what you have to say." Behind her, very softly, someone began to hum.
created_at"2026-10-08T08:27:58.237Z" 10/8/2026, 8:27:58 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2346
moderation_latency(null)
generation_time12735
tokens_prompt792
tokens_completion1298
native_tokens_prompt1172
native_tokens_completion1740
native_tokens_completion_images(null)
native_tokens_reasoning205
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"
usage0.0009872
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791448078-4gLSeQM2Lcq3ISVKfeQ8"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791448078-1ZRAogaWP5CdhVXepi1p"
upstream_id"msg_011CfpTHEh3PCRpJYhyR8GcS"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpTHEh3PCRpJYhyR8GcS"
is_byokfalse
latency718
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0009872
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"she said quietly [quietly]"
dialogueSentences3
tagDensity0.667
leniency1
rawRatio0.5
effectiveRatio0.5
82.90% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount877
totalAiIsmAdverbs3
found
0
adverb"slowly"
count1
1
adverb"very"
count1
2
adverb"softly"
count1
highlights
0"slowly"
1"very"
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)
54.39% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount877
totalAiIsms8
found
0
word"weight"
count1
1
word"throb"
count1
2
word"rhythmic"
count1
3
word"measured"
count1
4
word"pulsed"
count1
5
word"warmth"
count1
6
word"stomach"
count1
7
word"could feel"
count1
highlights
0"weight"
1"throb"
2"rhythmic"
3"measured"
4"pulsed"
5"warmth"
6"stomach"
7"could feel"
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
narrationSentences74
matches(empty)
65.64% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount2
hedgeCount2
narrationSentences74
filterMatches
0"look"
1"feel"
hedgeMatches
0"seemed to"
1"began to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences75
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen47
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans2
markdownWords7
totalWords877
ratio0.008
matches
0"Wildflowers bloom year-round,"
1"Do not be startled."
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions2
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions8
wordCount862
uniqueNames6
maxNameDensity0.35
worstName"Rory"
maxWindowNameDensity1
worstWindowName"Rory"
discoveredNames
Rory3
Park1
Heartstone1
October1
Isolde1
Eva1
persons
0"Rory"
1"Isolde"
2"Eva"
places
0"Park"
globalScore1
windowScore1
98.98% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences49
glossingSentenceCount1
matches
0"lines that seemed to shift when she stared at it, the way a word does when you repeat it too many times"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount877
matches(empty)
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences75
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs25
mean35.08
std23.96
cv0.683
sampleLengths
064
162
256
326
436
513
634
740
845
926
107
1185
127
1352
143
1526
1611
1715
1870
1976
2048
2145
225
2317
248
72.07% Passive voice overuse
Target: ≤2% passive sentences
passiveCount7
totalSentences74
matches
0"been left"
1"been told"
2"been told"
3"been startled"
4"was flattened"
5"been prepared"
6"been prepared"
7"been taken"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount1
totalVerbs133
matches
0"was standing"
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount0
semicolonCount0
flaggedSentences0
totalSentences75
ratio0
matches(empty)
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount865
adjectiveStacks0
stackExamples(empty)
adverbCount30
adverbRatio0.03468208092485549
lyAdverbCount9
lyAdverbRatio0.010404624277456647
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences75
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences75
mean11.69
std9.65
cv0.825
sampleLengths
019
128
217
314
48
528
612
77
824
94
1021
1112
1214
131
141
156
164
1724
189
194
205
2124
225
237
249
2524
267
275
2821
2912
305
315
327
339
347
356
3613
3714
3820
3932
407
414
421
4313
447
4527
461
471
481
495
64.89% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats8
diversityRatio0.4533333333333333
totalSentences75
uniqueOpeners34
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount3
totalSentences65
matches
0"Then the starlight returned, thin"
1"Only her own breathing, and"
2"Then they were still again."
ratio0.046
47.69% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount28
totalSentences65
matches
0"She stood there for a"
1"She had been told to"
2"She had been told not"
3"Its weight was reassuring."
4"It was late October."
5"She had not been startled."
6"She had been curious, and"
7"She clicked the torch off."
8"She had not noticed when"
9"She looked at the watch."
10"She had left the car"
11"It was not the sudden"
12"It was slow and deliberate,"
13"She had felt it do"
14"She pressed her palm flat"
15"She turned her head."
16"She told herself she had"
17"She kept her eyes on"
18"Her voice came out smaller"
19"She turned slowly, scar-pale wrist"
ratio0.431
52.31% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount53
totalSentences65
matches
0"The gate in the park"
1"Richmond Park closed its gates"
2"She stood there for a"
3"The path ran straight for"
4"The bracken gave way to"
5"Oaks rose behind them, black"
6"She had been told to"
7"She had been told not"
8"Its weight was reassuring."
9"Rory stopped at the boundary"
10"The torch beam fell across"
11"A scatter of pale blue"
12"It was late October."
13"Every flower in that clearing"
14"*Wildflowers bloom year-round,* Isolde had"
15"She had not been startled."
16"She had been curious, and"
17"She clicked the torch off."
18"The dark came down like"
19"She had not noticed when"
ratio0.815
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences65
matches(empty)
ratio0
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences31
technicalSentenceCount1
matches
0"She pressed her palm flat over her sternum and kept walking toward the centre of the ring, where the grass was flattened and pale, as if something large had lai…"
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
84.6288%