Run: 2026-05-31-01KSYXDX9BMH4KKHXWFXRY4G19

Run Details

Duration:
41.4s
Cost:
$0.060075
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 instructions Eva had scrawled on the back of the receipt were specific: Richmond Park, north of the Pen Ponds, follow the deer track until the oaks form a ring. Wait for the pendant to wake. Aurora pressed through the bracken with the torch beam wavering ahead of her. The park gates had been locked for hours. She'd climbed the fence near Sheen Cross, snagging her jacket on the wrought iron, and now the city felt impossibly far away — no traffic hum, no orange wash of streetlights against the clouds. Just black trees and the smell of wet earth. The Heartstone hung cold against her sternum. That was the first thing wrong. "Pulses with warmth," Eva had promised. "You'll know when you're close." But the crimson stone lay dead under Aurora's collar, no glow, no flutter, nothing. She'd checked it three times since crossing the fence. She checked it again now, holding it up to the torchlight. The deep red caught the beam and threw it back, flat as a drop of dried blood. The deer track narrowed. The oaks closed in. She found the ring exactly where Eva said it would be — eight ancient trunks set in a rough circle, their bark silvered with lichen, their crowns lost in the dark above. Wildflowers grew thick around their roots. Foxgloves, cornflowers, something pale and bell-shaped she didn't recognise. In October. In a frost. Aurora stopped at the boundary and listened. Nothing. That was wrong too. A wood at night should breathe — owls, foxes, the rustle of small things in the leaf litter, the creak of branches settling. Here the silence had a texture to it, dense and waiting, like the hush of a room she'd just walked into mid-conversation. "Hello?" Her voice didn't carry. It dropped at her feet and stayed there. She stepped between two of the oaks. The temperature changed at once — not warmer, not colder, just other, the air thicker on her tongue, faintly sweet, like the back of her throat had filled with honey. The torch beam shortened. It had been throwing light twenty feet down the track; now it stopped dead at six, swallowed by a darkness that didn't behave like ordinary dark. She swept it left and right. The trunks stood patient in the cone of light, then dissolved into black where the beam gave out. "Eva said you'd come," Aurora told the clearing. "She said someone would meet me." The flowers nodded, though there was no wind. She waited. One minute, two. The cold pendant rested over her heart, and she had the sudden, certain sense that it wasn't broken — that it had gone quiet the way a animal goes quiet when a predator walks into the field. A sound came from behind her. Soft. A footstep in long grass, the press and lift of weight. Aurora turned. The torch found nothing — only the gap she'd come through, the deer track running off into the trees. "Who's there?" The grass shifted again, off to her right this time, low and deliberate. She spun the beam toward it and caught — for less than a heartbeat — a paleness sliding behind one of the oaks. Tall. Thin. Gone before the light reached it. Her pulse climbed into her ears. "I can see you," she lied. The clearing answered with a smell. It rolled over her in a slow wave — the green sweetness of the air curdling into something underneath it, the wet-meat reek of a thing left too long in the dark. She pressed the back of her wrist to her nose. The crescent scar there throbbed, an old ache she hadn't felt in years. A whisper threaded through the silence. Not words — or words in a shape her mouth couldn't have made — and it came from everywhere at once, from the trunks and the flowers and the black canopy overhead, soft as breath against her ear. She backed toward the gap between the oaks. The whisper followed. "I'm leaving," she said, and hated how thin it sounded. "Tell Eva — tell her I came. I waited. Nobody —" Something moved at the edge of the beam. She didn't see it directly; she never saw any of it directly. It lived in the corner of her eye, in the half-second after the torch had passed, a long pale limb folding back behind a trunk, a glint that might have been an eye catching the light and might have been nothing. Each time she swung the torch to pin it, the clearing was empty and still, the flowers bobbing, the silence pressing. It was circling her. She understood that the way you understand a thing in a dream — not through reasoning but as a fact dropped whole into her chest. The footsteps came from the left now, then ahead, then behind, never hurrying, taking their time, the long grass whispering with each unseen step. Counterclockwise. Closing. Aurora reached the boundary oaks and put her back against the nearest trunk. The bark was wrong under her palm — warm, and slightly soft, giving like skin. She snatched her hand away. The Heartstone moved. Not warmth. The opposite. A spreading chill, sharp as ice water, pooling out from the stone and down through her ribs, and with it a clarity that cut through the honeyed fog in her head. Whatever shared the grove with her — the pendant had not gone quiet because she was safe. It had gone quiet because what stood here was older than the thing it had been made to warn her of, and the stone had nothing to say about it. Nothing it could do. The whisper stopped. The footsteps stopped. The whole clearing held its breath, and in that held breath Aurora heard, very close, just past the edge of the torchlight, the unmistakable sound of something breathing in. Slow. Deep. Drawing the air she'd just used, tasting her on it. She didn't turn the torch toward it. She'd learned that much. To look at it directly was to invite it to be seen — to make it real, to give it the right. Instead she stared straight ahead at the gap between the oaks, the deer track, the way out, and she made her feet take one step toward it. Then another. The breathing moved with her. Patient. Amused, almost, in a way that had nothing human in it at all. "You're not what I came for," she whispered, and the dark behind her seemed to lean closer to hear.
created_at"2026-05-31T11:41:40.024Z" 5/31/2026, 11:41:40 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2783
moderation_latency(null)
generation_time41355
tokens_prompt1038
tokens_completion1639
native_tokens_prompt1480
native_tokens_completion2107
native_tokens_completion_images(null)
native_tokens_reasoning51
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"
usage0.060075
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01FfyUhhBWivBpBwQS6ejH2k"
is_byokfalse
latency1316
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-1780227700-WjddalgcDZs6utRcyFW7"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780227700-A8qeT1u48pyFm2J1OYwR"
upstream_id"msg_01FfyUhhBWivBpBwQS6ejH2k"
total_cost0.060075
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
totalTags5
adverbTagCount0
adverbTags(empty)
dialogueSentences10
tagDensity0.5
leniency1
rawRatio0
effectiveRatio0
90.77% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1084
totalAiIsmAdverbs2
found
0
adverb"slightly"
count1
1
adverb"very"
count1
highlights
0"slightly"
1"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)
21.59% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1084
totalAiIsms17
found
0
word"wavering"
count1
1
word"warmth"
count2
2
word"silence"
count3
3
word"predator"
count1
4
word"weight"
count1
5
word"pulse"
count1
6
word"throbbed"
count1
7
word"whisper"
count3
8
word"glint"
count1
9
word"footsteps"
count2
10
word"chill"
count1
highlights
0"wavering"
1"warmth"
2"silence"
3"predator"
4"weight"
5"pulse"
6"throbbed"
7"whisper"
8"glint"
9"footsteps"
10"chill"
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
narrationSentences93
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount1
narrationSentences93
filterMatches(empty)
hedgeMatches
0"seemed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences98
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen42
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1100
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions6
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions19
wordCount1056
uniqueNames10
maxNameDensity0.66
worstName"Aurora"
maxWindowNameDensity1.5
worstWindowName"Eva"
discoveredNames
Eva3
Richmond1
Park1
Pen1
Ponds1
Sheen1
Cross1
Heartstone2
Aurora7
October1
persons
0"Eva"
1"Ponds"
2"Cross"
3"Heartstone"
4"Aurora"
places
0"Richmond"
1"Park"
2"Sheen"
3"October"
globalScore1
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences59
glossingSentenceCount0
matches(empty)
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.909
wordCount1100
matches
0"not through reasoning but as a fact dropped whole into her chest"
98.64% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount2
totalSentences98
matches
0"understood that the"
1"learned that much"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs41
mean26.83
std24.96
cv0.93
sampleLengths
036
164
213
311
451
58
652
77
81
949
101
1112
127
1384
1414
158
1642
1718
1821
192
2044
216
226
2361
2444
258
263
2721
2882
294
3051
3133
323
3386
343
353
3641
377
3855
3919
4019
97.72% Passive voice overuse
Target: ≤2% passive sentences
passiveCount2
totalSentences93
matches
0"been locked"
1"been made"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount1
totalVerbs157
matches
0"was circling"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount15
semicolonCount2
flaggedSentences15
totalSentences98
ratio0.153
matches
0"She'd climbed the fence near Sheen Cross, snagging her jacket on the wrought iron, and now the city felt impossibly far away — no traffic hum, no orange wash of streetlights against the clouds."
1"She found the ring exactly where Eva said it would be — eight ancient trunks set in a rough circle, their bark silvered with lichen, their crowns lost in the dark above."
2"A wood at night should breathe — owls, foxes, the rustle of small things in the leaf litter, the creak of branches settling."
3"The temperature changed at once — not warmer, not colder, just other, the air thicker on her tongue, faintly sweet, like the back of her throat had filled with honey."
4"It had been throwing light twenty feet down the track; now it stopped dead at six, swallowed by a darkness that didn't behave like ordinary dark."
5"The cold pendant rested over her heart, and she had the sudden, certain sense that it wasn't broken — that it had gone quiet the way a animal goes quiet when a predator walks into the field."
6"The torch found nothing — only the gap she'd come through, the deer track running off into the trees."
7"She spun the beam toward it and caught — for less than a heartbeat — a paleness sliding behind one of the oaks."
8"It rolled over her in a slow wave — the green sweetness of the air curdling into something underneath it, the wet-meat reek of a thing left too long in the dark."
9"Not words — or words in a shape her mouth couldn't have made — and it came from everywhere at once, from the trunks and the flowers and the black canopy overhead, soft as breath against her ear."
10"She didn't see it directly; she never saw any of it directly."
11"She understood that the way you understand a thing in a dream — not through reasoning but as a fact dropped whole into her chest."
12"The bark was wrong under her palm — warm, and slightly soft, giving like skin."
13"Whatever shared the grove with her — the pendant had not gone quiet because she was safe."
14"To look at it directly was to invite it to be seen — to make it real, to give it the right."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount652
adjectiveStacks0
stackExamples(empty)
adverbCount22
adverbRatio0.03374233128834356
lyAdverbCount4
lyAdverbRatio0.006134969325153374
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences98
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences98
mean11.22
std10.19
cv0.908
sampleLengths
030
16
213
38
434
59
67
76
86
95
1014
119
1211
1317
144
154
1632
176
189
192
203
217
221
234
2423
2522
261
274
288
297
3030
314
3226
336
3418
358
366
378
382
393
4037
416
421
4311
442
4519
462
4713
4823
491
61.56% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats8
diversityRatio0.41836734693877553
totalSentences98
uniqueOpeners41
86.58% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount2
totalSentences77
matches
0"Just black trees and the"
1"Instead she stared straight ahead"
ratio0.026
95.32% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount24
totalSentences77
matches
0"She'd climbed the fence near"
1"She'd checked it three times"
2"She checked it again now,"
3"She found the ring exactly"
4"Her voice didn't carry."
5"It dropped at her feet"
6"She stepped between two of"
7"It had been throwing light"
8"She swept it left and"
9"She spun the beam toward"
10"Her pulse climbed into her"
11"It rolled over her in"
12"She pressed the back of"
13"She backed toward the gap"
14"she said, and hated how"
15"She didn't see it directly;"
16"It lived in the corner"
17"It was circling her."
18"She understood that the way"
19"She snatched her hand away."
ratio0.312
31.43% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount66
totalSentences77
matches
0"The instructions Eva had scrawled"
1"Aurora pressed through the bracken"
2"The park gates had been"
3"She'd climbed the fence near"
4"The Heartstone hung cold against"
5"That was the first thing"
6"Eva had promised"
7"She'd checked it three times"
8"She checked it again now,"
9"The deep red caught the"
10"The deer track narrowed."
11"The oaks closed in."
12"She found the ring exactly"
13"Wildflowers grew thick around their"
14"Foxgloves, cornflowers, something pale and"
15"Aurora stopped at the boundary"
16"That was wrong too."
17"A wood at night should"
18"Here the silence had a"
19"Her voice didn't carry."
ratio0.857
64.94% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount1
totalSentences77
matches
0"To look at it directly"
ratio0.013
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences37
technicalSentenceCount2
matches
0"It had been throwing light twenty feet down the track; now it stopped dead at six, swallowed by a darkness that didn't behave like ordinary dark."
1"It lived in the corner of her eye, in the half-second after the torch had passed, a long pale limb folding back behind a trunk, a glint that might have been an …"
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags5
uselessAdditionCount0
matches(empty)
0.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags4
fancyCount2
fancyTags
0"she lied (lie)"
1"she whispered (whisper)"
dialogueSentences10
tagDensity0.4
leniency0.8
rawRatio0.5
effectiveRatio0.4
84.9517%