Run: 2026-02-19-01KHV72HMQ1NX0FAVCQ39ESYPE

Run Details

Duration:
36.6s
Cost:
$0.022176
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 looked smaller at night. Rory had visited the Fae Grove twice before, always in daylight, always with Isolde or someone who knew the way. She told herself it was different at night only because she was alone — that the ancient oaks forming the boundary of the clearing simply cast longer shadows, that the stones themselves hadn't changed, that the unease crawling up the back of her neck was tiredness and nothing more. She pushed through the last of the bracken and stepped across the boundary. The wildflowers were open. That was the first wrong thing. White blooms she didn't know the name of, scattered across the clearing floor like something spilled, their petals fully spread in the dark the way flowers weren't supposed to be. No moon to justify it. No light source she could identify. They simply glowed, faintly, from no particular source. She checked her phone. Half past eleven. She'd left the flat at quarter past, walked the familiar path through Richmond Park with her torch and her resolved, practical mind, told herself she was only here because the pendant had started doing something new. It had been pulsing all day — not the gentle throb she'd come to recognise near a portal, but something faster, more urgent, the way a second heartbeat would feel pressed against your palm. She'd come to the Grove because the Grove was the only place she understood even slightly. She'd come because standing in her flat watching the stone glow against her collarbone felt worse than coming here. She stood in the centre of the clearing and held the pendant up. The deep crimson of the stone caught nothing and gave back a faint inner light of its own. It had stopped pulsing. She waited. The trees at the boundary moved — just the upper branches, just a little, the way they did when a breeze came through. Except the air around her was completely still. She could feel that plainly. Not a breath of movement against her skin, no shift in the tall grass at the clearing's edge. The branches moved anyway. She lowered the pendant. Something in the trees to her left made a sound. Not loud — a single soft crack, like weight settling onto dry wood, and then silence. She turned toward it and kept her torch pointed low, the way Isolde had shown her, so she didn't ruin her own night vision. Nothing. The wildflowers nearest the tree line were bending. Not all of them — just a cluster, three or four, their white heads tilting slowly in the direction of the standing stones as though tracking something moving through the air. She watched them for a full minute. They kept bending. Then they stopped. She let out a slow breath and started toward the nearest standing stone, thinking she'd rest a hand on it, thinking the cold of old oak would clarify something. She'd taken four steps when she heard it — a sound from directly behind her. Not a crack this time. Something lower. A long, sustained pressure of air, almost below the threshold of sound, the kind of thing you felt behind your sternum before you properly heard it with your ears. She turned around. The clearing was empty. The wildflowers sat still. The boundary trees held their branches where branches belonged. She was not frightened. She was not frightened — she made the decision about that clearly, named it in her own mind the way her father used to name disputed facts in court, laid it flat on the table. She was not frightened. She was alert. There was a distinction. She checked the pendant again. Still, and cold now in a way it hadn't been a moment ago, the silver chain carrying a chill up through her fingers. She heard footsteps. Or not footsteps exactly — the impression of footsteps, weight on grass at a regular interval, coming from the far side of the clearing. She looked. The grass didn't move. The sound kept coming, steady, unhurried, growing neither louder nor quieter, as though whatever made it was neither approaching nor retreating but simply moving parallel to her, always at the same distance, always at the edge of where her vision softened into dark. She turned slowly, tracking it. It moved with her. Whatever it was — sound, presence, trick of acoustics in the pocket-space between realms — it maintained exactly the distance it had started with, and it moved precisely as she moved, and she stood very still in the middle of the clearing and became aware, with a cold and total certainty, that it had been doing this since before she'd noticed it. That it had been circling her since she'd stepped across the boundary stones, and that she had only now tuned her attention correctly. She counted her breaths. Four in. Four out. The footsteps stopped. The silence that followed had a quality to it she didn't like — the quality of held breath, of something that had stopped moving not because it had gone but because it had arrived. Because it was where it had intended to be. She could feel the shape of it behind her right shoulder, feel it the way you feel a word on the tip of your tongue, a certainty without evidence. She did not turn around. The pendant flared against her chest, sudden and sharp, the warmth of it cutting through her shirt like a pressed coin left in hot sunlight. Not the slow pulse from earlier. One hard beat, like a warning. One of the white flowers at her feet folded shut. Then another. Then the whole cluster, one after the next, petals drawing inward in the dark, as though something nearby had swallowed the source of whatever light they'd been drinking from. Rory stood very still, her torch in one hand and the cold silver chain in the other, and the Grove went absolutely, completely quiet.
created_at"2026-02-19T15:07:41.378Z" 2/19/2026, 3:07:41 PM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency749
moderation_latency(null)
generation_time36226
tokens_prompt1038
tokens_completion1473
native_tokens_prompt1047
native_tokens_completion1269
native_tokens_completion_images(null)
native_tokens_reasoning0
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"
usage0.022176
router(null)
provider_responses
0
endpoint_id"6d408764-7dd7-4626-bb87-a6cc1589bc86"
id"msg_01TrEtTqAinEfjRXphTUt7m9"
is_byokfalse
latency749
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
provider_name"Anthropic"
status200
api_type"completions"
id"gen-1771513661-3s4tUTaifP3HA14aZ3aC"
upstream_id"msg_01TrEtTqAinEfjRXphTUt7m9"
total_cost0.022176
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
59.60% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount990
totalAiIsmAdverbs8
found
0
adverb"slightly"
count1
1
adverb"completely"
count2
2
adverb"slowly"
count2
3
adverb"precisely"
count1
4
adverb"very"
count2
highlights
0"slightly"
1"completely"
2"slowly"
3"precisely"
4"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)
14.14% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount990
totalAiIsms17
found
0
word"familiar"
count1
1
word"resolved"
count1
2
word"throb"
count1
3
word"could feel"
count2
4
word"weight"
count2
5
word"silence"
count2
6
word"chill"
count1
7
word"footsteps"
count4
8
word"warmth"
count1
9
word"pulse"
count1
10
word"absolutely"
count1
highlights
0"familiar"
1"resolved"
2"throb"
3"could feel"
4"weight"
5"silence"
6"chill"
7"footsteps"
8"warmth"
9"pulse"
10"absolutely"
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
narrationSentences75
matches(empty)
66.67% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount2
hedgeCount2
narrationSentences75
filterMatches
0"feel feel"
hedgeMatches
0"started to"
1"tended to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences75
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
maxSentenceWordsSeen61
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1000
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions4
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions9
wordCount1000
uniqueNames5
maxNameDensity0.4
worstName"Grove"
maxWindowNameDensity1
worstWindowName"Grove"
discoveredNames
Fae1
Grove4
Isolde2
Richmond1
Park1
persons
0"Isolde"
places
0"Fae"
1"Grove"
2"Richmond"
3"Park"
globalScore1
windowScore1
90.48% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences42
glossingSentenceCount1
matches
0"as though tracking something moving through the air"
0.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches3
per1kWords3
wordCount1000
matches
0"not the gentle throb she'd come to recognise near a portal, but something faster, more urgent, the way a second heartbeat wo"
1"neither louder nor"
2"neither approaching nor"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences75
matches
0"changed, that the"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs30
mean33.33
std30.74
cv0.922
sampleLengths
07
169
213
359
4112
531
64
760
84
950
101
1152
1280
133
1417
1550
1628
173
1873
195
204
2185
228
233
2472
255
2637
2710
2831
2924
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount0
totalSentences75
matches(empty)
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount1
totalVerbs150
matches
0"were bending"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount11
semicolonCount0
flaggedSentences10
totalSentences75
ratio0.133
matches
0"She told herself it was different at night only because she was alone — that the ancient oaks forming the boundary of the clearing simply cast longer shadows, that the stones themselves hadn't changed, that the unease crawling up the back of her neck was tiredness and nothing more."
1"It had been pulsing all day — not the gentle throb she'd come to recognise near a portal, but something faster, more urgent, the way a second heartbeat would feel pressed against your palm."
2"The trees at the boundary moved — just the upper branches, just a little, the way they did when a breeze came through."
3"Not loud — a single soft crack, like weight settling onto dry wood, and then silence."
4"Not all of them — just a cluster, three or four, their white heads tilting slowly in the direction of the standing stones as though tracking something moving through the air."
5"She'd taken four steps when she heard it — a sound from directly behind her."
6"She was not frightened — she made the decision about that clearly, named it in her own mind the way her father used to name disputed facts in court, laid it flat on the table."
7"Or not footsteps exactly — the impression of footsteps, weight on grass at a regular interval, coming from the far side of the clearing."
8"Whatever it was — sound, presence, trick of acoustics in the pocket-space between realms — it maintained exactly the distance it had started with, and it moved precisely as she moved, and she stood very still in the middle of the clearing and became aware, with a cold and total certainty, that it had been doing this since before she'd noticed it."
9"The silence that followed had a quality to it she didn't like — the quality of held breath, of something that had stopped moving not because it had gone but because it had arrived."
93.42% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount990
adjectiveStacks0
stackExamples(empty)
adverbCount44
adverbRatio0.044444444444444446
lyAdverbCount23
lyAdverbRatio0.023232323232323233
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences75
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences75
mean13.33
std12.9
cv0.968
sampleLengths
07
120
249
313
44
56
630
75
86
98
104
113
1236
1334
1416
1519
1613
1718
184
192
2023
218
225
2318
244
254
2610
2716
2824
291
308
3131
327
333
343
3529
3615
375
382
3929
403
414
424
439
444
4535
464
473
484
495
28.67% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats16
diversityRatio0.29333333333333333
totalSentences75
uniqueOpeners22
98.04% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount2
totalSentences68
matches
0"Then they stopped."
1"Then the whole cluster, one"
ratio0.029
49.41% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount29
totalSentences68
matches
0"She told herself it was"
1"She pushed through the last"
2"They simply glowed, faintly, from"
3"She checked her phone."
4"She'd left the flat at"
5"It had been pulsing all"
6"She'd come to the Grove"
7"She'd come because standing in"
8"She stood in the centre"
9"It had stopped pulsing."
10"She could feel that plainly."
11"She lowered the pendant."
12"She turned toward it and"
13"She watched them for a"
14"They kept bending."
15"She let out a slow"
16"She'd taken four steps when"
17"She turned around."
18"She was not frightened."
19"She was not frightened —"
ratio0.426
92.35% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount50
totalSentences68
matches
0"The standing stones looked smaller"
1"Rory had visited the Fae"
2"She told herself it was"
3"She pushed through the last"
4"The wildflowers were open."
5"That was the first wrong"
6"They simply glowed, faintly, from"
7"She checked her phone."
8"She'd left the flat at"
9"It had been pulsing all"
10"She'd come to the Grove"
11"She'd come because standing in"
12"She stood in the centre"
13"The deep crimson of the"
14"It had stopped pulsing."
15"The trees at the boundary"
16"She could feel that plainly."
17"The branches moved anyway."
18"She lowered the pendant."
19"Something in the trees to"
ratio0.735
73.53% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount1
totalSentences68
matches
0"Because it was where it"
ratio0.015
50.69% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences31
technicalSentenceCount4
matches
0"Not all of them — just a cluster, three or four, their white heads tilting slowly in the direction of the standing stones as though tracking something moving th…"
1"The sound kept coming, steady, unhurried, growing neither louder nor quieter, as though whatever made it was neither approaching nor retreating but simply movin…"
2"The silence that followed had a quality to it she didn't like — the quality of held breath, of something that had stopped moving not because it had gone but bec…"
3"Then the whole cluster, one after the next, petals drawing inward in the dark, as though something nearby had swallowed the source of whatever light they'd been…"
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
80.5663%