Run: 2026-05-29-01KSSJVTJFN3NSZWGF7RBD4CAG

Run Details

Duration:
38.7s
Cost:
$0.056775
Provider:
Anthropic

Model input

System
You are an expert fiction writer. Always keep the following rules in mind: - Write in past tense and use General English spelling, grammar, and colloquialisms/slang. - Write in active voice - Always follow the "show, don't tell" principle. - Avoid adverbs and cliches and overused/commonly used phrases. Aim for fresh and original descriptions. - Convey events and story through dialogue. - Mix short, punchy sentences with long, descriptive ones. Drop fill words to add variety. - Skip "he/she said said" dialogue tags and convey people's actions or face expressions through their speech - Avoid mushy dialog and descriptions, have dialogue always continue the action, never stall or add unnecessary fluff. Vary the descriptions to not repeat yourself. - Put dialogue on its own paragraph to separate scene and action. - Reduce indicators of uncertainty like "trying" or "maybe" When writing text: - NEVER conclude the scene on your own, follow the beat instructions very closely. - NEVER end with foreshadowing. - NEVER write further than what I prompt you with. - AVOID imagining possible endings, NEVER deviate from the instructions. - STOP EARLY if the continuation contains what was required in the instructions. You do not need to fill out the full amount of words possible.
User/Human
Take into account the following glossary of characters/locations/items/lore... when writing your response: <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> Continue the story using the following instructions: <instructions> 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. </instructions>

Model response

AI
The standing stones leaned toward each other like old men sharing secrets, and Rory pushed through the gap between them with her phone torch cutting a thin blade through the dark. She'd come for answers. The pendant against her sternum had been warm all evening, warmer than her skin, and the note Eva left on the kitchen counter had said only one thing: *Richmond Park. The oaks. Midnight. Come alone.* Foolish, all of it. She knew that. But Eva hadn't answered her phone in three days, and the silence frightened her more than any clearing in the woods. Inside the ring of stones the air changed. Warmer, thicker, scented with something floral that didn't belong to October. Wildflowers spread across the grass in colours her torch couldn't quite name — blues that slid toward violet, reds that pulsed like something alive. She'd read about places like this in her mother's old books, the ones Jennifer kept on the high shelf and never explained. "Eva?" Her voice fell flat against the trees. No echo. That was the first wrong thing. She'd shouted across enough empty fields growing up to know how sound should behave. Here it simply stopped, swallowed the instant it left her mouth, as if the grove had hands and had closed them around the word. Rory swept the torch across the clearing. Empty. Grass and flowers and the dark wall of trees, and beyond them nothing she could see. "This isn't funny. You said midnight." She checked her phone. The clock read 11:58. Then she blinked and it read 12:46, and she hadn't felt the minutes pass at all. The torch flickered, steadied. Forty-eight per cent battery, then somehow fifty-one. She stared at the number until it hurt. The pendant burned now. Not the gentle warmth from her walk through the park but a real heat, the crimson stone glowing through the cotton of her shirt like a coal pressed to her chest. She pulled it loose and held it up. The inner light throbbed in a rhythm, slow and deliberate. Like a heartbeat. Not hers — hers was racing. A sound came from the treeline. Soft. The careful displacement of grass under weight, there and gone. "Eva, I swear to God." She turned the torch toward it. The beam found trunks, the gaps between them, the deeper black past the edge of the light. Nothing moved. But the certainty settled into her anyway, cold and absolute, the way you know a room has changed when someone walks in behind you. She was not alone. She'd stopped being alone some time ago, and only now had the grove decided to let her feel it. "Hello?" The flowers nearest her feet had closed. All of them, petals drawn tight, while the ones across the clearing still opened wide. A line ran between the closed and the open, and the line was moving toward her, flower by flower folding shut, as though something walked across the grass and the blooms shrank from its passing. Nothing was there. The grass didn't bend. But the petals kept closing, closer, six feet now, four. Rory stepped back. Her shoulder met one of the standing stones and she gasped — it was warm too, warm as flesh, and when she jerked away she could have sworn the bark beneath her hand had given like skin. "All right," she breathed. "All right. I'm leaving." She turned for the gap she'd come through. It wasn't there. Two stones stood where she remembered three, and the space between them showed only more trees, more flowers, the same impossible glow. She spun, torch wheeling, counting the stones. Five. There'd been five when she entered. She was sure. Nearly sure. The certainty she'd carried in with her had begun to rot at the edges, and the grove seemed to know it, seemed to lean in closer to watch. A laugh drifted across the clearing. Light, musical, a woman's laugh — and so much like Eva's that her chest seized. "Eva. Where are you?" "*Here,*" the voice answered, from the left. She turned. "*Here,*" it said, from the right, identical, overlapping the first by half a beat. "*Here,*" said a third, behind her, lower, and this one didn't sound like Eva at all. It sounded like it was learning to. The torch died. Not flickered — died, full black, and the dark that rushed in wasn't the dark of a park at night. No moon, no city glow, no stars between the branches. Just the grove and the crimson pulse of the pendant, throwing red light a few feet in every direction and no further. Within that small ring, the closed flowers. Beyond it, the slow patient sound of grass yielding to weight, circling. Rory pressed her back to the warm stone and held the pendant out like a candle. "What do you want?" The circling stopped. Directly ahead of her, just past the reach of the red glow, something exhaled. She felt the air of it move across her face, cool and damp, smelling of earth turned over and something sweeter underneath, the sweetness of fruit a day past ripe. "*Aurora,*" it said. She hadn't given her name. She'd called for Eva, only Eva. No one in this place should have known the name on her birth certificate, the one her father used when he was angry, the one her mother whispered. "*We've waited,*" the thing said, and now the voice had texture, layered, a dozen tones braided into one. "*The stone called and the stone came. Come closer, Aurora. Let us see the face that carries Dymas' heart.*" The pendant flared white-hot. She bit down on a cry and the light surged, pushing the red ring wider — and in the half second before it settled, the expanded glow caught the shape standing in front of her. Tall. Too tall. Pale where the light touched it and wrong in every place between, with a stillness no living thing should hold. Then the dark folded back over it, and it took a single step toward her, and the nearest flower closed.
created_at"2026-05-29T10:00:49.496Z" 5/29/2026, 10:00:49 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3019
moderation_latency(null)
generation_time38677
tokens_prompt1038
tokens_completion1542
native_tokens_prompt1480
native_tokens_completion1975
native_tokens_completion_images(null)
native_tokens_reasoning48
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"
usage0.056775
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01NQzeyMw8xYFvqsQSewcCG4"
is_byokfalse
latency1942
model_permaslug"anthropic/claude-4.8-opus-20260528"
provider_name"Anthropic"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.16.0; linux; x64))"
http_referer(null)
request_id"req-1780048849-dhI2VU21WEtm45dTfHQG"
session_id(null)
api_type"completions"
id"gen-1780048849-FavZ0PdNDKlkLYXlGVxC"
upstream_id"msg_01NQzeyMw8xYFvqsQSewcCG4"
total_cost0.056775
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags6
adverbTagCount0
adverbTags(empty)
dialogueSentences14
tagDensity0.429
leniency0.857
rawRatio0
effectiveRatio0
100.00% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1016
totalAiIsmAdverbs0
found(empty)
highlights(empty)
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)
45.87% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1016
totalAiIsms11
found
0
word"silence"
count1
1
word"pulsed"
count1
2
word"echo"
count1
3
word"flickered"
count2
4
word"warmth"
count1
5
word"throbbed"
count1
6
word"racing"
count1
7
word"weight"
count2
8
word"pulse"
count1
highlights
0"silence"
1"pulsed"
2"echo"
3"flickered"
4"warmth"
5"throbbed"
6"racing"
7"weight"
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
emotionTells1
narrationSentences87
matches
0"was angry"
93.60% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount2
hedgeCount1
narrationSentences87
filterMatches
0"know"
1"feel"
hedgeMatches
0"seemed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences95
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen36
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans7
markdownWords32
totalWords1022
ratio0.031
matches
0"Richmond Park. The oaks. Midnight. Come alone."
1"Here,"
2"Here,"
3"Here,"
4"Aurora,"
5"We've waited,"
6"The stone called and the stone came. Come closer, Aurora. Let us see the face that carries Dymas' heart."
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions13
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions14
wordCount970
uniqueNames6
maxNameDensity0.62
worstName"Eva"
maxWindowNameDensity2
worstWindowName"Eva"
discoveredNames
Rory4
Eva6
Park1
Foolish1
October1
Jennifer1
persons
0"Rory"
1"Eva"
2"Jennifer"
places
0"Park"
1"October"
globalScore1
windowScore1
62.28% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences57
glossingSentenceCount2
matches
0"quite name — blues that slid toward violet, reds that pulsed like something alive"
1"sounded like it was learning to"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.978
wordCount1022
matches
0"Not the gentle warmth from her walk through the park but a real heat, the crimson stone glowing through the cotton of"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences95
matches
0"that her"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs38
mean26.89
std22.31
cv0.83
sampleLengths
031
167
265
31
415
538
624
76
843
953
109
1117
125
1372
141
1557
1617
1740
188
198
203
2169
2221
234
247
2516
2623
273
2871
2916
304
3147
323
3339
3437
3539
3623
3720
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount0
totalSentences87
matches(empty)
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount2
totalVerbs163
matches
0"was racing"
1"was learning"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount6
semicolonCount0
flaggedSentences6
totalSentences95
ratio0.063
matches
0"Wildflowers spread across the grass in colours her torch couldn't quite name — blues that slid toward violet, reds that pulsed like something alive."
1"Not hers — hers was racing."
2"Her shoulder met one of the standing stones and she gasped — it was warm too, warm as flesh, and when she jerked away she could have sworn the bark beneath her hand had given like skin."
3"Light, musical, a woman's laugh — and so much like Eva's that her chest seized."
4"Not flickered — died, full black, and the dark that rushed in wasn't the dark of a park at night."
5"She bit down on a cry and the light surged, pushing the red ring wider — and in the half second before it settled, the expanded glow caught the shape standing in front of her."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount967
adjectiveStacks0
stackExamples(empty)
adverbCount29
adverbRatio0.02998965873836608
lyAdverbCount7
lyAdverbRatio0.007238883143743537
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences95
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences95
mean10.76
std9.36
cv0.87
sampleLengths
031
14
230
32
41
56
63
721
88
911
1024
1122
121
137
142
156
1614
1724
187
191
2016
216
224
234
2416
254
267
278
284
2931
308
3110
323
336
346
351
3610
375
386
3917
402
4124
424
4319
441
457
4615
4735
483
494
67.37% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats6
diversityRatio0.4421052631578947
totalSentences95
uniqueOpeners42
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount5
totalSentences74
matches
0"Then she blinked and it"
1"Light, musical, a woman's laugh"
2"Just the grove and the"
3"Directly ahead of her, just"
4"Then the dark folded back"
ratio0.068
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount22
totalSentences74
matches
0"She'd come for answers."
1"She knew that."
2"She'd read about places like"
3"Her voice fell flat against"
4"She'd shouted across enough empty"
5"She checked her phone."
6"She stared at the number"
7"She pulled it loose and"
8"She turned the torch toward"
9"She was not alone."
10"She'd stopped being alone some"
11"Her shoulder met one of"
12"She turned for the gap"
13"It wasn't there."
14"She spun, torch wheeling, counting"
15"She was sure."
16"it said, from the right,"
17"It sounded like it was"
18"She felt the air of"
19"She hadn't given her name."
ratio0.297
100.00% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount50
totalSentences74
matches
0"The standing stones leaned toward"
1"She'd come for answers."
2"The pendant against her sternum"
3"She knew that."
4"Wildflowers spread across the grass"
5"She'd read about places like"
6"Her voice fell flat against"
7"That was the first wrong"
8"She'd shouted across enough empty"
9"Here it simply stopped, swallowed"
10"Rory swept the torch across"
11"Grass and flowers and the"
12"She checked her phone."
13"The clock read 11:58."
14"The torch flickered, steadied."
15"She stared at the number"
16"The pendant burned now."
17"She pulled it loose and"
18"The inner light throbbed in"
19"A sound came from the"
ratio0.676
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences74
matches(empty)
ratio0
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences34
technicalSentenceCount1
matches
0"A line ran between the closed and the open, and the line was moving toward her, flower by flower folding shut, as though something walked across the grass and t…"
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags6
uselessAdditionCount0
matches(empty)
78.57% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags6
fancyCount1
fancyTags
0"she breathed (breathe)"
dialogueSentences14
tagDensity0.429
leniency0.857
rawRatio0.167
effectiveRatio0.143
88.2561%