Run: 2026-10-09-01M4FYKJ0M53H7TD0D0KH6086K

Run Details

Duration:
13.3s
Cost:
$0.001084
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 message had arrived at 11:48 without a sender's name, just a set of coordinates and a single line: *Come before the bells stop.* Rory had read it three times standing in the kitchen above Silas' bar, the bass from downstairs rattling the mugs on the shelf, and had almost deleted it. Instead she'd pulled on her coat, buttoned it to the throat, and taken the Night Bus to Richmond. Now the bus was a red smear fading down the Kingston Road, and she was standing at the edge of the park with the gate's iron spikes cold under her palm. The pendant lay against her breastbone, under her jumper, on its thin silver chain. She had stopped taking it off months ago. Nobody had ever told her who had left it on her doorstep, wrapped in tissue paper with no card, only the deep crimson stone catching the streetlight. Tonight it was warm. Not hot, not yet, just a steady heat like a palm pressed over her heart. *A portal,* she thought. *Or near one.* She told herself the thought was absurd, and then she climbed the fence where the wire was loose, because she was twenty-five and had been called cool-headed by everyone who'd ever known her, and cool-headed people did not turn back over a feeling. The grass inside was too quiet. Traffic from the A3 had been a constant hum at the boundary, the kind of sound a city makes when it forgets you are there. She walked away from it and the hum thinned, then stopped altogether, as if someone had closed a door. She checked her phone. The time read 11:52. She walked for what felt like ten minutes and checked again. 11:52. "Right," she said aloud. Her voice sounded flat, swallowed by the bracken. "Fine." The trees grew closer together. Old oaks, their trunks split and furred with moss, their lower branches bare and hooked like fingers. Between them the ground was carpeted in flowers that had no business blooming in late autumn: primroses pale as candle wax, clusters of blue bells, clover heads open to the dark. Their scent was thick and sweet. Rory's throat tightened around it. She saw the first stone through a gap in the trunks. Then a second. Then a ring of them, grey and leaning, each taller than a man, standing at uneven intervals around a clearing she could not quite see into. The pendant pulsed once against her skin, distinct and warm, and she stopped. Something moved at the edge of her vision, to her left, between two trunks. She turned her head slowly. Nothing. Bark. Moss. A shadow that was only a shadow. She kept her eyes on it anyway, counting her breaths the way she had in the hospital corridor years ago, when her wrist still ached from the glass and her mother had been talking too brightly to the nurse. The movement came again, to the right this time. A pale shape, tall and narrow, sliding behind an oak and not coming out the other side. "Hello?" she said. The wind answered with nothing. The flowers didn't stir. She began walking toward the ring of stones because there was nowhere else to go. The ground was soft, springy, almost warm through her boots. Somewhere ahead a bird began to sing, a long liquid run of notes, and then stopped mid-phrase, as though it had been interrupted. Then, from the trees behind her, came a voice. "Rory." It was her own voice. Not an echo. Not a copy. It was the exact way she said her name when she was tired and wanted someone to stop talking, and it came from about four feet away, at the height of her shoulder. She did not turn around. Her wrist throbbed along the old crescent scar, a dull ache that she felt more than remembered. Her hand had closed into a fist without her permission. She opened it, one finger at a time, and made herself take another step toward the stones. "Rory," the voice said again, softer now, almost fond. "You came back." She had never been here before. She was certain of that. And yet, as she reached the first standing stone and laid her palm against its cold, pitted surface, she knew with complete and sinking clarity that she had counted the stones on her way in, and there had been seven. There were eight now. Behind her, very close, the flowers began to bend, one after another, as if something was walking slowly through them, unhurried, in no particular rush to reach her. Rory kept her hand on the stone and did not look back. The pendant burned against her chest, and she understood, too late, that its warmth had never been a warning. It had been a welcome.
created_at"2026-10-09T09:06:17.243Z" 10/9/2026, 9:06:17 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency13299
moderation_latency(null)
generation_time13299
tokens_prompt792
tokens_completion1232
native_tokens_prompt1172
native_tokens_completion1934
native_tokens_completion_images(null)
native_tokens_reasoning458
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"
usage0.0010842
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791536777-bs9n7j7wk3bZfIZjRwZ6"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791536777-sBgcxZ6PwjJG2nGsXGPx"
upstream_id"msg_011CfrQ1d9N7EEft1bXtRTHy"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfrQ1d9N7EEft1bXtRTHy"
is_byokfalse
latency877
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0010842
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
totalTags4
adverbTagCount2
adverbTags
0"she said aloud [aloud]"
1"the voice said again [again]"
dialogueSentences6
tagDensity0.667
leniency1
rawRatio0.5
effectiveRatio0.5
81.41% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount807
totalAiIsmAdverbs3
found
0
adverb"slowly"
count2
1
adverb"very"
count1
highlights
0"slowly"
1"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)
75.22% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount807
totalAiIsms4
found
0
word"pulsed"
count1
1
word"echo"
count1
2
word"throbbed"
count1
3
word"warmth"
count1
highlights
0"pulsed"
1"echo"
2"throbbed"
3"warmth"
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
narrationSentences62
matches(empty)
96.77% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount2
narrationSentences62
filterMatches(empty)
hedgeMatches
0"began to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences65
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen52
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans3
markdownWords10
totalWords807
ratio0.012
matches
0"Come before the bells stop."
1"A portal,"
2"Or near one."
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions4
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions8
wordCount782
uniqueNames6
maxNameDensity0.38
worstName"Rory"
maxWindowNameDensity0.5
worstWindowName"Rory"
discoveredNames
Rory3
Night1
Bus1
Richmond1
Kingston1
Road1
persons
0"Rory"
places
0"Richmond"
1"Kingston"
2"Road"
globalScore1
windowScore1
18.42% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences38
glossingSentenceCount2
matches
0"felt like ten minutes and checked again"
1"not quite see into"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount807
matches(empty)
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences65
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs27
mean29.89
std21.88
cv0.732
sampleLengths
070
131
268
37
443
550
620
713
864
953
1014
1154
1226
133
149
1548
169
171
1844
195
2044
2112
2251
234
2428
2531
265
76.97% Passive voice overuse
Target: ≤2% passive sentences
passiveCount5
totalSentences62
matches
0"been called"
1"was carpeted"
2"been interrupted"
3"was tired"
4"been seven"
90.71% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount2
totalVerbs122
matches
0"was standing"
1"was walking"
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount0
semicolonCount0
flaggedSentences0
totalSentences65
ratio0
matches(empty)
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount36
adjectiveStacks0
stackExamples(empty)
adverbCount1
adverbRatio0.027777777777777776
lyAdverbCount0
lyAdverbRatio0
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences65
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences65
mean12.42
std11.57
cv0.932
sampleLengths
052
118
231
314
48
527
64
715
84
93
1043
116
1225
1319
144
154
1611
171
184
198
201
215
2217
2331
246
255
2611
273
2826
2913
3014
315
321
331
341
357
3639
379
3817
393
405
414
4215
4310
4423
459
461
475
483
493
66.15% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats6
diversityRatio0.453125
totalSentences64
uniqueOpeners29
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount5
totalSentences57
matches
0"Instead she'd pulled on her"
1"Then a second."
2"Then a ring of them,"
3"Somewhere ahead a bird began"
4"Then, from the trees behind"
ratio0.088
72.63% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount21
totalSentences57
matches
0"She had stopped taking it"
1"She told herself the thought"
2"She walked away from it"
3"She checked her phone."
4"She walked for what felt"
5"she said aloud"
6"Her voice sounded flat, swallowed"
7"Their scent was thick and"
8"She saw the first stone"
9"She turned her head slowly."
10"She kept her eyes on"
11"She began walking toward the"
12"It was her own voice."
13"It was the exact way"
14"She did not turn around."
15"Her wrist throbbed along the"
16"Her hand had closed into"
17"She opened it, one finger"
18"She had never been here"
19"She was certain of that."
ratio0.368
91.58% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount42
totalSentences57
matches
0"The message had arrived at"
1"The pendant lay against her"
2"She had stopped taking it"
3"Nobody had ever told her"
4"Tonight it was warm."
5"*A portal,* she thought."
6"She told herself the thought"
7"The grass inside was too"
8"Traffic from the A3 had"
9"She walked away from it"
10"She checked her phone."
11"The time read 11:52."
12"She walked for what felt"
13"she said aloud"
14"Her voice sounded flat, swallowed"
15"The trees grew closer together."
16"Their scent was thick and"
17"Rory's throat tightened around it."
18"She saw the first stone"
19"The pendant pulsed once against"
ratio0.737
100.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount2
totalSentences57
matches
0"Now the bus was a"
1"*Or near one.*"
ratio0.035
40.82% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences28
technicalSentenceCount4
matches
0"She told herself the thought was absurd, and then she climbed the fence where the wire was loose, because she was twenty-five and had been called cool-headed by…"
1"Between them the ground was carpeted in flowers that had no business blooming in late autumn: primroses pale as candle wax, clusters of blue bells, clover heads…"
2"Somewhere ahead a bird began to sing, a long liquid run of notes, and then stopped mid-phrase, as though it had been interrupted."
3"Behind her, very close, the flowers began to bend, one after another, as if something was walking slowly through them, unhurried, in no particular rush to reach…"
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags4
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags3
fancyCount0
fancyTags(empty)
dialogueSentences6
tagDensity0.5
leniency1
rawRatio0
effectiveRatio0
87.0225%