Run: 2026-10-08-01M4E18VJHT5DASBN3HWJ9YR2P

Run Details

Duration:
15.2s
Cost:
$0.001151
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 directions had been simple enough: past the Pen Ponds, off the gravel path, follow the deer fence until the oaks began. Rory had followed them with her phone torch angled at the ground, and by the time she reached the oaks the park had gone quiet in the particular way it did after the last joggers and dog walkers gave up for the night. No traffic hummed from the Kingston Road. No planes crossed the sky. Even the wind had stopped. She stood at the boundary and looked at the stones. There were nine of them, or she thought there were nine, rising out of the bracken like the teeth of something buried. Each was wrapped in oak, not carved but grown around, bark knotted over the stone as though the tree had swallowed it and thought better of the digestion. The gap between two of them was wide enough for a person. Beyond it, the dark was thicker, softer, the way a velvet curtain looks just before it's drawn. The pendant lay warm against her breastbone. She'd noticed the warmth on the Tube, a faint pressure like a fingertip resting against her skin, and had told herself it was the chain, or her own body heat, or the three cups of Yu-Fei's oolong she'd nursed during her shift. But it had grown steadily more insistent with every mile south-west, and now, standing a few feet from the gap, it throbbed in slow, deliberate beats. Heartstone, she thought. Like the thing was listening for something on the other side and had found it. She closed her fist around the pendant. It was warm. Not hot. Warm the way a hand is warm after holding a cup of tea. "Right," she said aloud, to nobody. Her voice came out smaller than she wanted. "You've come this far, Rory." She stepped through. The change was not dramatic. There was no rush of light, no pull at her stomach. The bracken simply gave way to grass, and the grass was longer and softer and somehow greener than the grass she had just left, and the air smelled of rain on warm stone. She could see clearly even though she had switched off her torch without remembering to. Wildflowers covered the clearing in drifts: foxglove, campion, something pale and star-shaped she didn't have a name for, all of them blooming at once. It was November. She had passed frost on the path. The clearing was perfectly round. She had expected a grove, trees and shadows, but there was only the open ring of grass and the oaks standing back from it in a wall, and no sound at all. That was the first wrong thing. The second was that she could not hear her own footsteps. She tested it, lifting her heel and setting it down. The grass took the weight without a whisper. She tried again, harder. Nothing. It was like walking on a photograph. She told herself that was a sensible thing to notice and a sensible thing to be unnerved by, and that she was allowed both. The clearing was empty. She made herself go slowly around its edge, keeping her back to the oaks as much as possible, and found the place she had been told to look: a flat stone at the centre, half-sunk in the turf, its surface worn smooth as soap. Someone had left a single white feather on it. The pendant pulsed so hard now she felt it in her teeth. She crouched and reached for the feather. Something moved at the far edge of her vision. She did not turn her head. She had learned that much from Eva, years ago, on a dare that had gone wrong in a Welsh quarry: the eye is quicker than the mind, and if you turn too fast you see only what you expected. So she kept her gaze fixed on the stone and let her peripheral vision work. A shape crossed between two trunks, low and unhurried, the colour of wet bark. It did not walk so much as lengthen, the way a shadow stretches when the light behind it shifts. She picked up the feather. It was cold. Everything else in this place was warm except that. When she straightened, the shape was gone, and the gap in the oaks where she had entered was gone too. The wall of trees looked unbroken, as though it had never had a gap at all. Rory breathed carefully through her nose. In. Out. Her left wrist ached along the small crescent scar, the way it always did when she was frightened, a habit of her body she had never managed to train out. "Hello?" she said. The word fell flat and dead. The flowers did not stir. Then, from somewhere behind the oaks, came a sound she recognised immediately, because she had heard it every day of her childhood at the kitchen table: a spoon tapping twice against the rim of a cup. Her mother's signal. Two taps meant *come and eat, it's getting cold*. Her throat closed. It was impossible. Her mother was in Cardiff, asleep, or at least she had been when Rory had left a message at ten. The tapping came again, patient and exact, and under it, faint as breath, a second sound joined the first. Footsteps. Slow. Circling. They were not coming closer. They were going around the clearing, a little further out each time, the way someone walks when they are looking for the place where a wall ends. The pendant beat against her skin, once, twice, and then held still, every pulse fading at once, as though whatever it had been signalling had finally arrived and no longer needed to announce itself. Rory looked down. The stone at her feet had changed. Its surface, which had been smooth and pale, was now marked with a fresh set of small prints, all pointing towards her, as if something had walked up to her while she was watching the trees and stood close enough to look at her face. She had not felt it come. She had not heard it. Behind her, very quietly, the spoon began again.
created_at"2026-10-08T15:14:23.452Z" 10/8/2026, 3:14:23 PM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2488
moderation_latency(null)
generation_time15130
tokens_prompt792
tokens_completion1577
native_tokens_prompt1172
native_tokens_completion2068
native_tokens_completion_images(null)
native_tokens_reasoning253
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"
usage0.0011512
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791472463-rQ6GO7LGM4khrmGrZTs6"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791472463-04g9f5nx9fipqG721bq6"
upstream_id"msg_011CfpzGn9UE6tSY245s5NzS"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpzGn9UE6tSY245s5NzS"
is_byokfalse
latency904
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0011512
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 aloud [aloud]"
dialogueSentences3
tagDensity0.667
leniency1
rawRatio0.5
effectiveRatio0.5
80.69% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1036
totalAiIsmAdverbs4
found
0
adverb"perfectly"
count1
1
adverb"slowly"
count1
2
adverb"carefully"
count1
3
adverb"very"
count1
highlights
0"perfectly"
1"slowly"
2"carefully"
3"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)
51.74% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1036
totalAiIsms10
found
0
word"velvet"
count1
1
word"warmth"
count1
2
word"throbbed"
count1
3
word"stomach"
count1
4
word"footsteps"
count2
5
word"weight"
count1
6
word"whisper"
count1
7
word"pulsed"
count1
8
word"pulse"
count1
highlights
0"velvet"
1"warmth"
2"throbbed"
3"stomach"
4"footsteps"
5"weight"
6"whisper"
7"pulsed"
8"pulse"
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
narrationSentences81
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount1
narrationSentences81
filterMatches
0"see"
hedgeMatches
0"managed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences82
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen45
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans1
markdownWords6
totalWords1036
ratio0.006
matches
0"come and eat, it's getting cold"
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions3
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions14
wordCount1029
uniqueNames11
maxNameDensity0.39
worstName"Rory"
maxWindowNameDensity1
worstWindowName"Rory"
discoveredNames
Pen1
Ponds1
Kingston1
Road1
Tube1
Yu-Fei1
November1
Eva1
Welsh1
Cardiff1
Rory4
persons
0"Yu-Fei"
1"Eva"
2"Rory"
places
0"Kingston"
1"Road"
2"Welsh"
3"Cardiff"
globalScore1
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences53
glossingSentenceCount0
matches(empty)
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.965
wordCount1036
matches
0"not carved but grown around, bark knotted over the stone as though the tree"
85.37% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount2
totalSentences82
matches
0"was that she"
1"learned that much"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs30
mean34.53
std28.81
cv0.834
sampleLengths
082
110
279
37
486
525
619
73
898
937
1017
1130
1224
1369
147
159
1693
1717
1836
1938
203
2111
2248
233
2445
2532
2634
2755
2811
298
79.27% Passive voice overuse
Target: ≤2% passive sentences
passiveCount6
totalSentences81
matches
0"was wrapped"
1"was allowed"
2"been told"
3"was gone"
4"was gone"
5"was frightened"
6"been when"
0.40% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount5
totalVerbs167
matches
0"was listening"
1"was like walking"
2"were not coming"
3"were going"
4"was watching"
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount0
semicolonCount0
flaggedSentences0
totalSentences82
ratio0
matches(empty)
85.80% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1033
adjectiveStacks1
stackExamples
0"lay warm against her"
adverbCount51
adverbRatio0.049370764762826716
lyAdverbCount11
lyAdverbRatio0.010648596321393998
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences82
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences82
mean12.63
std11.61
cv0.919
sampleLengths
022
143
27
35
45
510
622
728
812
917
107
1142
1226
133
1415
157
163
172
1813
196
208
215
223
235
2411
2533
2615
2724
283
297
305
3132
326
3311
3410
358
364
371
387
3924
404
4144
429
4312
447
459
466
4739
4815
4914
69.11% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats5
diversityRatio0.45121951219512196
totalSentences82
uniqueOpeners37
91.32% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount2
totalSentences73
matches
0"Even the wind had stopped."
1"Then, from somewhere behind the"
ratio0.027
44.66% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount32
totalSentences73
matches
0"She stood at the boundary"
1"She'd noticed the warmth on"
2"She closed her fist around"
3"It was warm."
4"she said aloud, to nobody"
5"Her voice came out smaller"
6"She stepped through."
7"She could see clearly even"
8"It was November."
9"She had passed frost on"
10"She had expected a grove,"
11"She tested it, lifting her"
12"She tried again, harder."
13"It was like walking on"
14"She told herself that was"
15"She made herself go slowly"
16"She crouched and reached for"
17"She did not turn her"
18"She had learned that much"
19"It did not walk so"
ratio0.438
55.89% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount59
totalSentences73
matches
0"The directions had been simple"
1"Rory had followed them with"
2"She stood at the boundary"
3"Each was wrapped in oak,"
4"The gap between two of"
5"The pendant lay warm against"
6"She'd noticed the warmth on"
7"Heartstone, she thought."
8"She closed her fist around"
9"It was warm."
10"she said aloud, to nobody"
11"Her voice came out smaller"
12"She stepped through."
13"The change was not dramatic."
14"The bracken simply gave way"
15"She could see clearly even"
16"Wildflowers covered the clearing in"
17"It was November."
18"She had passed frost on"
19"The clearing was perfectly round."
ratio0.808
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences73
matches(empty)
ratio0
79.83% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences34
technicalSentenceCount3
matches
0"Each was wrapped in oak, not carved but grown around, bark knotted over the stone as though the tree had swallowed it and thought better of the digestion."
1"The pendant beat against her skin, once, twice, and then held still, every pulse fading at once, as though whatever it had been signalling had finally arrived a…"
2"Its surface, which had been smooth and pale, was now marked with a fresh set of small prints, all pointing towards her, as if something had walked up to her whi…"
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
totalTags2
fancyCount0
fancyTags(empty)
dialogueSentences3
tagDensity0.667
leniency1
rawRatio0
effectiveRatio0
80.8027%