Run: 2026-09-23-01M37NVE72FVHK6PH1KT6H3KGY

Run Details

Duration:
42.8s
Cost:
$0.065628
Provider:
Claude Platform on AWS

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 deer had gone. Rory noticed that first, before the cold, before the quiet. On the walk in from Sheen Gate she had passed a whole herd of them bedded down in the bracken, their breath smoking under the sodium glow from the road. Forty heads had turned to track her. Now, a quarter mile on, the grass lay flattened in shallow ovals where they had been, still steaming, and not one animal stood in sight. She thumbed her torch on. The beam found bracken, a crisp packet, the pale trunk of a birch. Nothing else. "Right. Fine. Good." Her voice went nowhere. No echo, no carry. It dropped at her feet like a stone into mud. Isolde's message sat folded in her jacket pocket, three words in green ink on paper that smelled of crushed nettles. *Midnight. Come alone.* Rory had read it at half six in the back of the Golden Empress with a bag of prawn crackers in her other hand, and she had laughed, because who wrote like that? Now she wanted to take the note out and read it again, and check that she hadn't invented it. The oaks rose out of the dark ahead of her. Standing stones, Isolde called them, though they were wood, grey and furrowed and older than the city. Nine of them in a ring, each one thick as a car. Rory had walked between them four times before, and each time the air on the far side had tasted of honey and rain, and the wildflowers had turned their faces towards her like a crowd hearing its name called. She stepped through. No honey. The air carried a flat, mineral smell, the smell of a cellar flooded and drained. The wildflowers still grew, bluebells and campion and foxgloves shoulder-high, but every bloom had closed, petals clenched tight as fists. The torchlight slid across them and they did not stir. "Isolde?" The name died the same way her voice had outside. Rory swallowed. Under her collar the Heartstone lay against her sternum, and she pressed two fingers to it through her T-shirt. Cool. Just a stone on a chain. She checked her phone. 23:58. One bar of signal, then none. Fine. She was early. She'd wait. She picked a spot near the centre, where a flat rock broke through the grass, and sat with her back to it. From here she could see all nine oaks. Old habit, from the years with Evan: find the wall, face the door. She clicked the torch off to save the battery, and the dark swung in so fast she flinched. Her eyes adjusted. Starlight. The pale smudge of cloud over London. The oaks, black on black. A footstep. Rory held her breath. Soft, behind her and to the left, the sound of weight settling onto grass. She waited for the next one. It didn't come. "Isolde, if that's you, it's not funny." Nothing. She shifted her heel against the ground, and there it came again, the same soft press, from the same place, a half-second after her own movement. She did it once more, harder. Her heel. Then the other. Her own footstep, returned to her late, from somewhere she wasn't. She stood up. She didn't decide to. Her legs made the choice and her hands followed, fumbling the torch on and sweeping it over the flowers at her back. Closed bells. Closed campion. A gap in the foxgloves where the stems parted, as if something had pushed through, though the stems stood straight and unbroken. Phone. 23:58. She stared at it. She had sat on that rock for at least five minutes. She tapped the screen and watched the numbers hold, the colon between them blinking, blinking, the minutes refusing to turn. "Time moves differently." She said it aloud because Isolde had said it to her once, laughing, trailing her fingers through the grass. "An hour in here can be a day out there. That's all this is." The words came out thin. She tucked the phone away. At the edge of her vision, between the third and fourth oak, something tall leaned out from behind the trunk and drew back. Rory didn't turn her head. She knew that trick, knew that if she looked straight at it there would be nothing, only bark and shadow, and then she would start doubting her own eyes, and she needed her eyes. So she kept her gaze on the flat rock and let the corner of her sight do the work. The oak. The dark beside the oak. The dark hanging a shade too long, a shade too narrow, like a coat left on a hook. It didn't move again. It didn't need to. Her pulse ticked in the scar on her wrist. She pressed her thumb over the little crescent the way she had as a girl, when the thunder over Cardiff kept her awake. "Who's there?" The wind came up. It carried no smell of grass or rain, and it didn't touch the flowers. Not one stem swayed. It moved across her face and through her hair and nowhere else, as if it had come all this way for her alone. Then, from the far side of the ring, a woman's voice, warm and tired and full of Swansea vowels: "Aurora, love. You'll catch your death out here." Every muscle in Rory's back locked. Her mother's voice. Her mother's exact voice, the one that had called her in from the garden a thousand times, the one that went up at the end of *love* like a question. It came from the dark beyond the sixth oak, and it sounded like it was smiling. "Mam's not here." Rory's lips had gone numb. "Mam's in Cardiff. Mam's asleep." "Come on, now. Come in. I've put the kettle on." The voice moved. Rory heard no footsteps. The sound slid from the sixth oak to the seventh, patient and easy, keeping the same distance from her the whole way round. The Heartstone warmed. She felt it through the cotton, a slow bloom of heat against her skin, like a palm laid flat on her chest. She hooked the chain with one finger and drew the pendant out. Crimson light seeped between her knuckles, faint and pulsing, a heartbeat that was not hers. It had done this twice before. Both times, something had been coming through. "Aurora." Closer now. The eighth oak. The voice had dropped all its warmth, and what remained sounded like her mother reading a word off a page in a language she didn't speak. "Aur. Or. A." Rory backed up until the flat rock hit her calves. The torch beam shook across the ring and she couldn't make it stop. Oak. Oak. Flowers. Oak. She counted without meaning to, the way you count stairs in the dark. Seven. Eight. Nine. Ten. She stopped. She swung the beam back to the start and counted again, slower, lips moving. One, the gap she had walked through. Two. Three, four, with the narrow shadow gone from between them. Five. Six. Seven. Eight. Nine. Ten. The tenth stood between the ninth and the first, where the gate should have been. Grey. Furrowed. The same girth as the others. Its bark ran in long vertical seams, and when the torchlight crossed it the seams did not throw shadows the way the other trunks did. The light lay flat on it, like light on a painted wall. The pendant beat against her fist. Faster now. "I'm not coming in," Rory said. From somewhere behind the tenth oak, in her own voice, low and steady and a half-second late, something answered. "I'm not coming in."
created_at"2026-09-23T17:43:41.05Z" 9/23/2026, 5:43:41 PM
model"anthropic/claude-opus-5.5-20260921"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency5101
moderation_latency(null)
generation_time42737
tokens_prompt1008
tokens_completion1962
native_tokens_prompt1482
native_tokens_completion2985
native_tokens_completion_images(null)
native_tokens_reasoning555
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"
usage0.065628
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790185421-qgIHJh8zONA2AqAM58NV"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790185421-qzMp4wR4WlQtiJshNzrI"
upstream_id"msg_011CfLnXN91RgHPFvr8RAohR"
provider_responses
0
endpoint_id"3a2388bc-3740-4e64-a1f5-4e301726b6b9"
id"msg_011CfLnXN91RgHPFvr8RAohR"
is_byokfalse
latency1528
model_permaslug"anthropic/claude-opus-5.5-20260921"
provider_name"Claude Platform on AWS"
status200
total_cost0.065628
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
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags3
adverbTagCount0
adverbTags(empty)
dialogueSentences14
tagDensity0.214
leniency0.429
rawRatio0
effectiveRatio0
100.00% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1285
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)
72.76% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1285
totalAiIsms7
found
0
word"echo"
count1
1
word"furrowed"
count2
2
word"weight"
count1
3
word"pulse"
count1
4
word"footsteps"
count1
5
word"warmth"
count1
highlights
0"echo"
1"furrowed"
2"weight"
3"pulse"
4"footsteps"
5"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
narrationSentences133
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount0
narrationSentences133
filterMatches(empty)
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences144
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen39
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans2
markdownWords4
totalWords1285
ratio0.003
matches
0"Midnight. Come alone."
1"love"
75.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions5
unquotedAttributions1
matches
0"Standing stones, Isolde called them, though they were wood, grey and furrowed and older than the city."
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions30
wordCount1217
uniqueNames13
maxNameDensity0.9
worstName"Rory"
maxWindowNameDensity2
worstWindowName"Rory"
discoveredNames
Sheen1
Gate1
Rory11
Golden1
Empress1
Isolde3
Heartstone2
Evan1
London1
Cardiff1
Swansea1
Nine3
Oak3
persons
0"Gate"
1"Rory"
2"Isolde"
3"Heartstone"
4"Evan"
places
0"Sheen"
1"London"
2"Cardiff"
3"Oak"
globalScore1
windowScore1
74.24% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences66
glossingSentenceCount2
matches
0"sounded like it was smiling"
1"sounded like her mother reading a word off"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount1285
matches(empty)
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount2
totalSentences144
matches
0"check that she"
1"knew that trick"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs53
mean24.25
std23.34
cv0.963
sampleLengths
04
172
220
33
418
575
678
73
847
91
1038
1111
126
1361
1416
152
1627
177
1838
1911
2055
212
2235
2336
2410
2523
2683
278
2832
292
3045
3119
328
336
3449
3513
3610
3730
383
3962
401
4131
423
4340
443
451
4639
471
4860
498
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount0
totalSentences133
matches(empty)
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount0
totalVerbs178
matches(empty)
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount0
semicolonCount0
flaggedSentences0
totalSentences144
ratio0
matches(empty)
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1220
adjectiveStacks0
stackExamples(empty)
adverbCount33
adverbRatio0.027049180327868853
lyAdverbCount2
lyAdverbRatio0.001639344262295082
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences144
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences144
mean8.92
std8.58
cv0.961
sampleLengths
04
110
230
37
425
55
613
72
83
94
104
1110
1220
131
1435
1519
1610
1717
1812
1939
203
212
2215
2320
2410
251
2610
272
2819
291
306
314
321
336
341
353
362
3722
388
3913
4018
413
421
437
445
452
464
4714
486
493
50.94% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats21
diversityRatio0.39436619718309857
totalSentences142
uniqueOpeners56
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount4
totalSentences95
matches
0"Just a stone on a"
1"Soft, behind her and to"
2"Then the other."
3"Then, from the far side"
ratio0.042
60.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount38
totalSentences95
matches
0"She thumbed her torch on."
1"Her voice went nowhere."
2"It dropped at her feet"
3"She stepped through."
4"She checked her phone."
5"She was early."
6"She picked a spot near"
7"She clicked the torch off"
8"Her eyes adjusted."
9"She waited for the next"
10"It didn't come."
11"She shifted her heel against"
12"She did it once more,"
13"Her own footstep, returned to"
14"She stood up."
15"She didn't decide to."
16"Her legs made the choice"
17"She stared at it."
18"She had sat on that"
19"She tapped the screen and"
ratio0.4
75.79% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount73
totalSentences95
matches
0"The deer had gone."
1"Rory noticed that first, before"
2"She thumbed her torch on."
3"The beam found bracken, a"
4"Her voice went nowhere."
5"It dropped at her feet"
6"Isolde's message sat folded in"
7"The oaks rose out of"
8"Rory had walked between them"
9"She stepped through."
10"The air carried a flat,"
11"The wildflowers still grew, bluebells"
12"The torchlight slid across them"
13"The name died the same"
14"She checked her phone."
15"She was early."
16"She picked a spot near"
17"She clicked the torch off"
18"Her eyes adjusted."
19"The pale smudge of cloud"
ratio0.768
100.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount2
totalSentences95
matches
0"Now, a quarter mile on,"
1"Now she wanted to take"
ratio0.021
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences51
technicalSentenceCount2
matches
0"Isolde's message sat folded in her jacket pocket, three words in green ink on paper that smelled of crushed nettles."
1"A gap in the foxgloves where the stems parted, as if something had pushed through, though the stems stood straight and unbroken."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags3
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags2
fancyCount0
fancyTags(empty)
dialogueSentences14
tagDensity0.143
leniency0.286
rawRatio0
effectiveRatio0
93.6245%