Run: 2026-02-24-01KJ8W9KCSQ87M806XTZYNPWW8

Run Details

Duration:
50.0s
Cost:
$0.033012
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
Richmond Park after midnight was a different country. Rory had read that once, in a tourist pamphlet of all places, and she'd thought it a ridiculous thing to say about a patch of managed green space in southwest London. Now she walked the outer path with her torch pressed low against her thigh, and she understood completely what the writer had meant. The deer were the first thing. During the day they moved in loose, indifferent herds, occasionally blocking the road, occasionally lifting their heads to stare at passing joggers with their flat amber eyes. At night they were absent. Not hidden — absent. The park held roughly six hundred of them, a fact she knew because she'd looked it up on the bus ride over, the kind of useless anchoring detail her brain reached for when the rest of her was sliding toward unease. Six hundred, and not one visible shape between the dark treelines, not one sound of hooves on frost-hardened ground. The park breathed and held its breath and breathed again, and there was nothing in it but Rory and the wind. She'd been given a note. That was why she was here. It had been slipped under the door of her flat three days ago, written on paper that felt heavier than paper should, in ink the colour of old tea. It named the grove. It named a time. It named her, not as Rory, not even as Aurora, but as a third name she'd only recently learned belonged to her, and that detail alone had been enough to make her come. Someone who knew that name was someone she needed to look at. The standing stones were easier to find than she'd expected. The grove sat in a hollow off the main path, past a long corridor of ancient oaks whose roots had split the footway into ridges and channels. A person could walk the park a hundred times and never find the hollow — she was certain of that, because Eva had tried twice before she'd succeeded. But tonight the path opened ahead of Rory as though it had been waiting, and the eight stones rose from the grass in a rough circle, each one oak, each one older than anything cultivated had the right to be, their bark silver-black in the thin moonlight. She stopped at the boundary. The wildflowers were blooming. Full, open blooms — dog violet, red campion, something pale and cup-shaped she couldn't name — spread across the ground inside the circle of stones and beyond them, into the clearing proper. February. Below freezing on the walk from the bus stop. The flowers didn't know that, or didn't care, or operated under a different set of agreements entirely. The Heartstone pendant sat against her sternum under two layers of clothing, and it pulsed. Not the faint, half-imagined warmth it occasionally gave off. A full, deliberate pulse, like a second heartbeat that had fallen slightly out of sync with her own. She pressed her hand flat against her chest through her coat. The warmth spread to her palm. She stepped between two of the stones. The sound changed. It wasn't silence exactly — the wind still moved through the high canopy, still pressed against the back of her neck — but all the ambient texture of the park outside dropped away, and what replaced it was a quality of listening. The grove didn't go quiet. It paid attention. Rory swept her torch in a slow arc. Empty clearing, roughly thirty feet across. A collapsed log near the far edge, furred with moss. The wildflowers, obscenely bright and open. A single rabbit frozen mid-posture beside the log, one foreleg lifted, its eyes twin amber coins in the torchlight. It didn't move. She watched it for a long moment. It didn't move, didn't twitch its nose, didn't set the foreleg down. She looked away. When she looked back it was gone, and the moss on the log where it had been sitting showed no impression, no parting, no disturbance at all. She stood very still and listened to what direction her instincts were pointing. They were pointing at the tree line to her left. Nothing there. Dark trunks, dark between the trunks. Her torchlight didn't reach far enough to do anything useful, only illuminated a pale column in front of her and made the darkness on either side of it absolute. She turned off the torch. It took three or four seconds for her eyes to begin adjusting, and in that interval the darkness was total and pressing and she became acutely aware of her own breathing — too loud, too regular, a metronome announcing position. She slowed it. Opened her mouth slightly to quiet the inhale. The grove resolved itself slowly: stone shapes, flower shapes, the silver geography of the clearing in dilute moonlight. Tree trunks to the left. Still nothing between them. But there was a smell. Not unpleasant — that was the wrongness of it. Something green and mineral, like rain striking chalk, or the inside of a well. It drifted and pooled around her and then it was gone, and then it was back, and it didn't move the way a smell moved when wind was carrying it. It moved the way a smell moved when something was moving. The pendant pulsed again. Again. Then a third time in quick succession, and the warmth through her coat became heat, and she reached inside instinctively and wrapped her fingers around it and felt it throb against her palm like something with a pulse of its own. She turned in a slow circle. The clearing was still empty. Still silent in that attentive way. The flowers open, the log mossy and unmoved, the stones at the boundary standing their patient watch. She looked at the stones. Seven. She counted again, taking her time, pointing at each in sequence. Seven stones. There had been eight when she entered — she was certain of it, as certain as she was of the cold or the flower smell on her hands. She'd noticed them specifically, had counted them specifically, because counting things was what her brain did when it needed somewhere to put its attention. Seven now. Her back was to the eighth spot in the circle. She didn't turn around immediately. She made herself take one breath, full and slow, fill her lungs and release it, and she pressed the pendant once between her fingers so that the heat of it grounded her in the specific, physical fact of her own hand. Then she turned.
created_at"2026-02-24T22:28:39.97Z" 2/24/2026, 10:28:39 PM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency887
moderation_latency(null)
generation_time49962
tokens_prompt1038
tokens_completion2163
native_tokens_prompt1064
native_tokens_completion1988
native_tokens_completion_images(null)
native_tokens_reasoning559
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"stop"
usage0.033012
router(null)
provider_responses
0
endpoint_id"6d408764-7dd7-4626-bb87-a6cc1589bc86"
id"msg_013zU5qs3jsomdNSmzyQJLTA"
is_byokfalse
latency884
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
provider_name"Anthropic"
status200
api_type"completions"
id"gen-1771972119-CW4K53Yd6J09WL4yCj95"
upstream_id"msg_013zU5qs3jsomdNSmzyQJLTA"
total_cost0.033012
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags0
77.13% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1093
totalAiIsmAdverbs5
found
0
adverb"completely"
count1
1
adverb"slightly"
count2
2
adverb"very"
count1
3
adverb"slowly"
count1
highlights
0"completely"
1"slightly"
2"very"
3"slowly"
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)
54.25% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1093
totalAiIsms10
found
0
word"pulsed"
count2
1
word"warmth"
count3
2
word"pulse"
count2
3
word"silence"
count1
4
word"resolved"
count1
5
word"throb"
count1
highlights
0"pulsed"
1"warmth"
2"pulse"
3"silence"
4"resolved"
5"throb"
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
narrationSentences82
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount0
narrationSentences82
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
maxSentenceWordsSeen48
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1102
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions1
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions13
wordCount1102
uniqueNames7
maxNameDensity0.45
worstName"Rory"
maxWindowNameDensity1.5
worstWindowName"Rory"
discoveredNames
Park1
London1
Rory5
Aurora1
Eva1
Heartstone1
Seven3
persons
0"Rory"
1"Eva"
places
0"Park"
1"London"
globalScore1
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences54
glossingSentenceCount0
matches(empty)
18.51% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches2
per1kWords1.815
wordCount1102
matches
0"not as Rory, not even as Aurora, but as a third name she'd only recently learned belonged to her"
1"not even as Aurora, but as a third name she'd only recently learned belonged to her"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences82
matches
0"knew that name"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs33
mean33.39
std30.27
cv0.906
sampleLengths
08
154
2123
311
482
510
6102
75
863
915
1044
117
123
1350
1449
153
1619
1730
1823
1937
205
2151
2227
235
2464
2546
266
2728
285
2966
302
3110
3249
88.15% Passive voice overuse
Target: ≤2% passive sentences
passiveCount4
totalSentences82
matches
0"been given"
1"been slipped"
2"was gone"
3"was gone"
0.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount5
totalVerbs162
matches
0"was sliding"
1"were blooming"
2"were pointing"
3"were pointing"
4"was carrying"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount9
semicolonCount0
flaggedSentences7
totalSentences82
ratio0.085
matches
0"Not hidden — absent."
1"A person could walk the park a hundred times and never find the hollow — she was certain of that, because Eva had tried twice before she'd succeeded."
2"Full, open blooms — dog violet, red campion, something pale and cup-shaped she couldn't name — spread across the ground inside the circle of stones and beyond them, into the clearing proper."
3"It wasn't silence exactly — the wind still moved through the high canopy, still pressed against the back of her neck — but all the ambient texture of the park outside dropped away, and what replaced it was a quality of listening."
4"It took three or four seconds for her eyes to begin adjusting, and in that interval the darkness was total and pressing and she became acutely aware of her own breathing — too loud, too regular, a metronome announcing position."
5"Not unpleasant — that was the wrongness of it."
6"There had been eight when she entered — she was certain of it, as certain as she was of the cold or the flower smell on her hands."
92.34% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1098
adjectiveStacks1
stackExamples
0"faint, half-imagined warmth"
adverbCount46
adverbRatio0.04189435336976321
lyAdverbCount20
lyAdverbRatio0.018214936247723135
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
mean13.44
std11.89
cv0.885
sampleLengths
08
131
223
36
427
55
64
741
819
921
105
116
1229
134
144
1533
1612
1710
1827
1928
2047
215
224
2332
241
259
2617
2715
289
2918
3011
316
327
333
3442
355
363
378
386
3910
406
4119
423
437
4412
453
4627
4713
4810
492
54.47% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats7
diversityRatio0.3780487804878049
totalSentences82
uniqueOpeners31
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount3
totalSentences76
matches
0"Then a third time in"
1"Still silent in that attentive"
2"Then she turned."
ratio0.039
67.37% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount29
totalSentences76
matches
0"She'd been given a note."
1"It had been slipped under"
2"It named the grove."
3"It named a time."
4"It named her, not as"
5"She stopped at the boundary."
6"She pressed her hand flat"
7"She stepped between two of"
8"It wasn't silence exactly —"
9"It paid attention."
10"It didn't move."
11"She watched it for a"
12"It didn't move, didn't twitch"
13"She looked away."
14"She stood very still and"
15"They were pointing at the"
16"Her torchlight didn't reach far"
17"She turned off the torch."
18"It took three or four"
19"She slowed it."
ratio0.382
85.00% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount57
totalSentences76
matches
0"Richmond Park after midnight was"
1"Rory had read that once,"
2"The deer were the first"
3"The park held roughly six"
4"The park breathed and held"
5"She'd been given a note."
6"That was why she was"
7"It had been slipped under"
8"It named the grove."
9"It named a time."
10"It named her, not as"
11"Someone who knew that name"
12"The standing stones were easier"
13"The grove sat in a"
14"A person could walk the"
15"She stopped at the boundary."
16"The wildflowers were blooming."
17"The flowers didn't know that,"
18"The Heartstone pendant sat against"
19"A full, deliberate pulse, like"
ratio0.75
65.79% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount1
totalSentences76
matches
0"Now she walked the outer"
ratio0.013
69.60% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences39
technicalSentenceCount4
matches
0"It had been slipped under the door of her flat three days ago, written on paper that felt heavier than paper should, in ink the colour of old tea."
1"But tonight the path opened ahead of Rory as though it had been waiting, and the eight stones rose from the grass in a rough circle, each one oak, each one olde…"
2"A full, deliberate pulse, like a second heartbeat that had fallen slightly out of sync with her own."
3"She counted again, taking her time, pointing at each in sequence."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags0
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags0
82.4203%