Run: 2026-06-01-01KT1H85QQRNRNJMZP559NNEJM

Run Details

Duration:
41.5s
Cost:
$0.058775
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 directions Eva scrawled on the back of a receipt had ended at the iron gates of Richmond Park, and from there Rory walked on memory and stubbornness. The path narrowed past the last lamp, mud sucking at her boots, until even the city's orange smear behind the trees gave up and let the dark settle proper. She'd come for answers. That was the deal she made with herself crossing the park. Eva had spoken of a grove, a place where the woman called Isolde might explain the pendant that hummed against Rory's sternum, and Rory had laughed at the time. She wasn't laughing now. The standing stones rose out of nothing. One moment there were only birches, pale and ordinary. The next, two oaks loomed ahead, thicker than any tree had a right to be, their trunks grey and fissured like old bone. They leaned toward each other at the top, almost touching, and between them lay a clearing lit by no moon she could find. "Hello?" Her voice went out and didn't come back. No echo. The word simply stopped, swallowed, as if the air past the stones were thicker than the air behind her. She stepped through. Wildflowers brushed her shins. Foxgloves, she thought, and bluebells, and others she had no name for, all of them open and bright in the middle of the night, in the middle of a London winter. Their colours shouldn't have been visible at all. There was a glow to the grove, low and even, coming from everywhere and nowhere, the way a memory of light persists behind closed eyes. The pendant warmed. Not the gentle pulse she'd grown used to. This was a steady heat, a coal pressed flat to her skin, and she dragged the crimson stone out from under her collar to look at it. Its inner glow had deepened to the colour of a banked fire. She watched it throb once, twice, in time with something that wasn't her heart. "Right," she breathed. "I'm here. So where's Isolde?" Nothing answered. But the silence shifted. She felt it before she understood it — the quality of the quiet had changed, the way a room changes when someone enters it behind you. The flowers had stopped moving. There was no wind, she realised. There had never been wind. So why had they been swaying when she came through the stones? Rory turned a slow circle. The oaks stood at her back where she'd left them, the dark beyond them complete. The clearing stretched further than it should have, the treeline soft and uncertain at its edges, dissolving into a grey blur that hurt to look at directly. A sound came from that blur. A small wet click, like a tongue against the roof of a mouth. "Eva said you'd talk to me," she called, louder now, hating the tremor that crept into it. "I've got the pendant. That's why I came. That's the only reason I came." The click answered her. Closer. She kept her eyes on the spot where she thought it had come from, and that was the mistake, because the movement happened at the other side of her vision — a shape low to the ground, long-limbed, sliding from behind one foxglove stalk to behind another. When she snapped her head round there was only the flower, trembling, settling. Her breath fogged. The temperature had dropped. The flowers, impossibly, still bloomed. "I can see you," she lied. The grove seemed to consider this. Somewhere off in the grey, the clicking multiplied — not one source now but several, scattered around the clearing's rim, an idle conversation in a language built from small dry noises. She held the pendant in her fist. The heat of it was almost pain. A hand's worth of time passed, or an hour. She had no way to measure it. Eva's warning surfaced through the rising static of her fear: *time runs sideways in there, Rory, an hour can be a heartbeat or a week, don't trust the dark, don't follow anything that asks you to.* Nothing had asked her to follow. Not yet. The light flickered. For half a second the grove went truly black, and in that black she saw them — not with her eyes but with whatever sense lives below the eyes, the one that knows when a stair is missing in the dark. Tall now. Standing where the low shapes had crouched. A ring of them just past the flowers, patient, swaying with the absent wind, their heads tilted at angles necks don't make. Then the glow returned and the ring was empty grass. Rory took a step back toward the stones. The oaks were further than she'd left them. She was certain of it. The clearing had stretched while she wasn't looking, the way the corridor of a nightmare lengthens with every stride. "Okay," she whispered, to herself, to steady the thing rattling in her chest. "Okay. Walk. Just walk." She walked. The flowers parted. The pendant burned. Behind her — and this was the worst of it, this was the thing that scraped at the base of her skull — behind her, the soft sound of footsteps in grass kept perfect time with her own. When she stopped, they stopped. A half-beat late, every time, as though whatever made them had to remember how walking was done. She stopped. The footsteps stopped, late. "Isolde?" Her voice cracked on it. "If that's you, I'd really like you to say something." The click came from directly behind her left shoulder. Inches away. Warm and wet and patient. She didn't turn. Some animal sense locked her spine straight and told her that turning was an invitation, that the thing was waiting, polite as a guest, for her to face it and make it welcome. The pendant flared so hot she gasped, and in its crimson light she saw her own breath hanging, and past her breath, cast huge across the swaying flowers, a shadow that was not her shape at all — too long in the arms, too thin in the neck, crowned with something that branched like antlers, or like fingers, splayed and reaching toward the smaller dark blot that was her. The footsteps behind her shifted their weight. And from the centre of the grove, where there had been nothing a moment ago, a woman's voice spoke, low and amused and very, very old. "You're early, little flame. They haven't finished deciding whether to keep you."
created_at"2026-06-01T12:06:32.445Z" 6/1/2026, 12:06:32 PM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2740
moderation_latency(null)
generation_time41505
tokens_prompt1038
tokens_completion1635
native_tokens_prompt1480
native_tokens_completion2055
native_tokens_completion_images(null)
native_tokens_reasoning68
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"
usage0.058775
router(null)
provider_responses
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endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_017RhnLZDnMpXJQQhW6xQQZV"
is_byokfalse
latency1173
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-1780315592-svzHx8dKHgzOoe6I51dv"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780315592-O4kMMHuCFJPZRKY87piO"
upstream_id"msg_017RhnLZDnMpXJQQhW6xQQZV"
total_cost0.058775
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)
dialogueSentences11
tagDensity0.455
leniency0.909
rawRatio0
effectiveRatio0
81.52% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1082
totalAiIsmAdverbs4
found
0
adverb"truly"
count1
1
adverb"really"
count1
2
adverb"very"
count2
highlights
0"truly"
1"really"
2"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)
49.17% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1082
totalAiIsms11
found
0
word"loomed"
count1
1
word"echo"
count1
2
word"pulse"
count1
3
word"throb"
count1
4
word"silence"
count1
5
word"flickered"
count1
6
word"footsteps"
count3
7
word"perfect"
count1
8
word"weight"
count1
highlights
0"loomed"
1"echo"
2"pulse"
3"throb"
4"silence"
5"flickered"
6"footsteps"
7"perfect"
8"weight"
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
hedgeCount1
narrationSentences82
filterMatches(empty)
hedgeMatches
0"seemed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences88
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen68
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans1
markdownWords26
totalWords1089
ratio0.024
matches
0"time runs sideways in there, Rory, an hour can be a heartbeat or a week, don't trust the dark, don't follow anything that asks you to."
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions9
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions13
wordCount1030
uniqueNames6
maxNameDensity0.58
worstName"Rory"
maxWindowNameDensity1.5
worstWindowName"Rory"
discoveredNames
Eva3
Richmond1
Park1
Rory6
Isolde1
London1
persons
0"Eva"
1"Rory"
2"Isolde"
places
0"Richmond"
1"Park"
2"London"
globalScore1
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences50
glossingSentenceCount0
matches(empty)
16.35% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches2
per1kWords1.837
wordCount1089
matches
0"not one source now but several, scattered around the clearing's rim, an idle conver"
1"not with her eyes but with whatever sense lives below the eyes, the one"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences88
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs36
mean30.25
std26.28
cv0.869
sampleLengths
057
148
27
355
41
529
63
768
83
961
108
116
1254
1347
1419
1531
165
1760
1812
196
2051
2152
228
233
2472
2510
2640
2717
2868
296
3016
3116
32105
337
3426
3512
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount0
totalSentences82
matches(empty)
85.71% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount3
totalVerbs175
matches
0"wasn't laughing"
1"wasn't looking"
2"was waiting"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount7
semicolonCount0
flaggedSentences6
totalSentences88
ratio0.068
matches
0"She felt it before she understood it — the quality of the quiet had changed, the way a room changes when someone enters it behind you."
1"She kept her eyes on the spot where she thought it had come from, and that was the mistake, because the movement happened at the other side of her vision — a shape low to the ground, long-limbed, sliding from behind one foxglove stalk to behind another."
2"Somewhere off in the grey, the clicking multiplied — not one source now but several, scattered around the clearing's rim, an idle conversation in a language built from small dry noises."
3"For half a second the grove went truly black, and in that black she saw them — not with her eyes but with whatever sense lives below the eyes, the one that knows when a stair is missing in the dark."
4"Behind her — and this was the worst of it, this was the thing that scraped at the base of her skull — behind her, the soft sound of footsteps in grass kept perfect time with her own."
5"The pendant flared so hot she gasped, and in its crimson light she saw her own breath hanging, and past her breath, cast huge across the swaying flowers, a shadow that was not her shape at all — too long in the arms, too thin in the neck, crowned with something that branched like antlers, or like fingers, splayed and reaching toward the smaller dark blot that was her."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1025
adjectiveStacks0
stackExamples(empty)
adverbCount31
adverbRatio0.03024390243902439
lyAdverbCount7
lyAdverbRatio0.006829268292682927
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences88
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences88
mean12.38
std12.18
cv0.984
sampleLengths
028
129
24
311
429
54
67
79
823
923
101
118
122
1319
143
154
1631
178
1825
193
208
2127
2212
2314
243
255
262
274
2826
295
306
315
3212
335
3415
3527
366
3713
3817
3914
404
411
4247
4313
443
454
465
476
486
4931
64.77% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats8
diversityRatio0.4431818181818182
totalSentences88
uniqueOpeners39
92.59% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount2
totalSentences72
matches
0"Somewhere off in the grey,"
1"Then the glow returned and"
ratio0.028
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount18
totalSentences72
matches
0"She'd come for answers."
1"She wasn't laughing now."
2"They leaned toward each other"
3"Her voice went out and"
4"She stepped through."
5"Their colours shouldn't have been"
6"Its inner glow had deepened"
7"She watched it throb once,"
8"She felt it before she"
9"she called, louder now, hating"
10"She kept her eyes on"
11"Her breath fogged."
12"She held the pendant in"
13"She had no way to"
14"She was certain of it."
15"she whispered, to herself, to"
16"Her voice cracked on it"
17"She didn't turn."
ratio0.25
64.17% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount57
totalSentences72
matches
0"The directions Eva scrawled on"
1"The path narrowed past the"
2"She'd come for answers."
3"That was the deal she"
4"Eva had spoken of a"
5"She wasn't laughing now."
6"The standing stones rose out"
7"The next, two oaks loomed"
8"They leaned toward each other"
9"Her voice went out and"
10"The word simply stopped, swallowed,"
11"She stepped through."
12"Wildflowers brushed her shins."
13"Foxgloves, she thought, and bluebells,"
14"Their colours shouldn't have been"
15"The pendant warmed."
16"This was a steady heat,"
17"Its inner glow had deepened"
18"She watched it throb once,"
19"She felt it before she"
ratio0.792
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences72
matches(empty)
ratio0
23.81% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences30
technicalSentenceCount5
matches
0"She watched it throb once, twice, in time with something that wasn't her heart."
1"The clearing stretched further than it should have, the treeline soft and uncertain at its edges, dissolving into a grey blur that hurt to look at directly."
2"Behind her — and this was the worst of it, this was the thing that scraped at the base of her skull — behind her, the soft sound of footsteps in grass kept perf…"
3"A half-beat late, every time, as though whatever made them had to remember how walking was done."
4"The pendant flared so hot she gasped, and in its crimson light she saw her own breath hanging, and past her breath, cast huge across the swaying flowers, a shad…"
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
fancyCount3
fancyTags
0"she breathed (breathe)"
1"she lied (lie)"
2"she whispered (whisper)"
dialogueSentences11
tagDensity0.364
leniency0.727
rawRatio0.75
effectiveRatio0.545
79.2695%