Run: 2026-10-08-01M4DA81WVJ1KST9D0AEGH0QR8

Run Details

Duration:
15.2s
Cost:
$0.001134
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 at dusk, which Rory had expected, and the gap in the hedge beyond it had been exactly where the message said it would be. She slipped through with her torch in one hand and her bag strap bunched in the other, and when she straightened on the far side, the park noise fell away so completely that she stopped moving to listen to it go. No traffic. No distant hum from the A3. No wind in the bracken. She switched the torch on. The beam cut a white column through the dark and lit up a clearing the size of a tennis court, ringed by oaks so old their trunks had split into separate trees and then grown back together. Between them stood the standing stones, grey and lichen-scabbed, leaning at angles that looked deliberate. Six of them. She had counted them from the hedge. The pendant under her jumper was warm. Not hot, just a steady, faint pulse against her breastbone, the way a hand feels when someone holds it near your skin. She pulled the silver chain free and let the crimson stone rest on her palm. It gave off its faint inner glow, a dim red ember in the torchlight, and the warmth beat once, twice, then settled. *Near a portal*, the note had said. *It will know when you're close.* "Right," she said quietly. Her voice sounded flat, swallowed by the trees. "Well. I'm close." She walked toward the centre of the clearing. Her boots pressed into moss that was softer than it had any right to be, and she noticed the flowers only when the torch swept across them. Bluebells, pale foxgloves, a drift of white anemones standing open in the cold. It was the second week of November. Every petal was fully open, dew beaded along the edges, as if it were June and someone had forgotten to tell the ground. She crouched and touched one. The petal was cold and slick. Ordinary. That was almost the worst part. Behind her, something stepped on a twig. Rory went still. She waited, one hand flat on the moss, the torch angled down so its light would not spill far. Nothing. She counted her breaths. Four. Five. Then she heard it again, and this time she understood it wasn't a twig. It was a footstep, placed carefully, the way someone walks when they are trying to match another person's stride. She stood slowly and turned. The trees were just trees. Thick trunks, black between the gaps, their branches a tangle that the torch could not reach. She swept the beam left, then right. Nothing moved on the ground. Nothing stood among the oaks. But the pendant had gone hot. Real heat now, pressing into her skin, and she realised it was pointing her. Not toward the stones. Toward the tree line to her left, where the dark seemed a shade heavier than the dark around it. "Hello?" she said. The word vanished. Nothing answered. Then, from somewhere deep among the trunks, a sound like a voice trying out a word it had only read: a soft, wet click, then a long exhalation. It might have been a deer. Rory had seen deer in Richmond Park, had nearly walked into a stag once on the path by Pen Ponds, and she knew what a deer sounded like. This was not that. She took one step back toward the hedge. Her boots made no sound on the moss. She tried again and heard only the faint rasp of her own jacket. Her heartbeat had found a rhythm that matched the pendant's pulse, quick and hard. She made herself breathe through her nose. Cool-headed, her mother used to say, when Rory was small and had been caught with a broken vase or a bloody knee. *Think first. Then move.* She thought. The hedge was twenty metres back. The gate was beyond it. The message had promised answers if she stayed until the clearing changed, and she had not yet seen it change, which meant either it had not happened or she had not been paying close enough attention. She looked at the stones again. There were seven. She was certain there had been six. She had counted them twice in the first thirty seconds, and each time she had landed on six, and the number had felt like a relief. Now a seventh stood at the far edge of the clearing, half-hidden by the nearest oak, its face turned toward her. She had not seen it arrive. There had been no sound of anything moving through the grass. The torch flickered. Only for a moment, a stutter in the beam like a bad connection. In that brief dimness, she saw movement at the edge of the light. Something pale, upright, the height of a person, slipping from one trunk to the next in a way that did not look like walking. She did not scream. She did not run. She stood with her torch raised and her other hand closed around the warm stone, and she waited for the beam to steady. When it did, the pale shape was gone. The seventh stone was still there. Behind her, very softly, someone counted her breaths back to her, one step behind.
created_at"2026-10-08T08:31:59.912Z" 10/8/2026, 8:31:59 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2779
moderation_latency(null)
generation_time14963
tokens_prompt792
tokens_completion1279
native_tokens_prompt1172
native_tokens_completion2034
native_tokens_completion_images(null)
native_tokens_reasoning473
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"
usage0.0011342
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791448319-FnW1by3S3AKf5AiWuXpF"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791448319-GpiHEGxKS2OAZJX4FUYu"
upstream_id"msg_011CfpTb4MgqwWCHNy373gLb"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpTb4MgqwWCHNy373gLb"
is_byokfalse
latency862
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0011342
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
71.78% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount886
totalAiIsmAdverbs5
found
0
adverb"completely"
count1
1
adverb"carefully"
count1
2
adverb"slowly"
count1
3
adverb"very"
count1
4
adverb"softly"
count1
highlights
0"completely"
1"carefully"
2"slowly"
3"very"
4"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)
77.43% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount886
totalAiIsms4
found
0
word"pulse"
count2
1
word"warmth"
count1
2
word"flickered"
count1
highlights
0"pulse"
1"warmth"
2"flickered"
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
filterCount0
hedgeCount0
narrationSentences81
filterMatches(empty)
hedgeMatches(empty)
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
maxSentenceWordsSeen41
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans3
markdownWords13
totalWords886
ratio0.015
matches
0"Near a portal"
1"It will know when you're close."
2"Think first. Then move."
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
totalMentions10
wordCount881
uniqueNames7
maxNameDensity0.45
worstName"Rory"
maxWindowNameDensity1
worstWindowName"Rory"
discoveredNames
Rory4
November1
June1
Richmond1
Park1
Pen1
Ponds1
persons
0"Rory"
places
0"Richmond"
1"Park"
globalScore1
windowScore1
55.66% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences53
glossingSentenceCount2
matches
0"sounded like"
1"felt like a relief"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount886
matches(empty)
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences82
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs25
mean35.44
std28.53
cv0.805
sampleLengths
070
113
267
366
413
515
678
718
87
962
105
1138
1243
133
1467
154
1629
1796
186
193
2071
2153
2231
2314
2414
92.27% Passive voice overuse
Target: ≤2% passive sentences
passiveCount3
totalSentences81
matches
0"been locked"
1"been caught"
2"was gone"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount1
totalVerbs145
matches
0"was pointing"
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount0
semicolonCount0
flaggedSentences0
totalSentences82
ratio0
matches(empty)
92.44% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount884
adjectiveStacks0
stackExamples(empty)
adverbCount43
adverbRatio0.048642533936651584
lyAdverbCount12
lyAdverbRatio0.013574660633484163
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
mean10.8
std9.2
cv0.852
sampleLengths
029
141
22
36
45
55
637
715
83
97
107
1122
1215
1322
147
156
164
178
183
198
2027
2113
227
2323
245
256
261
276
287
293
3019
311
324
331
341
3514
3619
375
385
3916
407
415
425
436
4414
454
4619
473
483
492
61.38% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats8
diversityRatio0.4268292682926829
totalSentences82
uniqueOpeners35
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount4
totalSentences73
matches
0"Then she heard it again,"
1"Then, from somewhere deep among"
2"Then move.* She thought."
3"Only for a moment, a"
ratio0.055
55.62% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount30
totalSentences73
matches
0"She slipped through with her"
1"She switched the torch on."
2"She had counted them from"
3"She pulled the silver chain"
4"It gave off its faint"
5"*It will know when you're"
6"she said quietly"
7"Her voice sounded flat, swallowed"
8"She walked toward the centre"
9"Her boots pressed into moss"
10"It was the second week"
11"She crouched and touched one."
12"She waited, one hand flat"
13"She counted her breaths."
14"It was a footstep, placed"
15"She stood slowly and turned."
16"She swept the beam left,"
17"It might have been a"
18"She took one step back"
19"Her boots made no sound"
ratio0.411
100.00% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount51
totalSentences73
matches
0"The gate had been locked"
1"She slipped through with her"
2"She switched the torch on."
3"The beam cut a white"
4"She had counted them from"
5"The pendant under her jumper"
6"She pulled the silver chain"
7"It gave off its faint"
8"*It will know when you're"
9"she said quietly"
10"Her voice sounded flat, swallowed"
11"She walked toward the centre"
12"Her boots pressed into moss"
13"Bluebells, pale foxgloves, a drift"
14"It was the second week"
15"Every petal was fully open,"
16"She crouched and touched one."
17"The petal was cold and"
18"That was almost the worst"
19"Rory went still."
ratio0.699
68.49% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount1
totalSentences73
matches
0"Now a seventh stood at"
ratio0.014
71.43% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences30
technicalSentenceCount3
matches
0"Between them stood the standing stones, grey and lichen-scabbed, leaning at angles that looked deliberate."
1"Her heartbeat had found a rhythm that matched the pendant's pulse, quick and hard."
2"Something pale, upright, the height of a person, slipping from one trunk to the next in a way that did not look like walking."
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
88.2165%