Run: 2026-02-19-01KHV72HN08PXPKGB6XT5Y5W1R

Run Details

Duration:
35.8s
Cost:
$0.022596
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 last bus had dropped Rory at the edge of Richmond Park forty minutes ago, and she'd walked the rest in the dark with her phone torch cutting a pale wedge through the trees. She knew the path. She'd walked it twice before, both times in daylight with Isolde beside her, the old woman pointing out the markers — a split elm, a cairn of three flat stones, the place where the ground dipped and the air turned faintly sweet. Rory had memorised it the way she memorised everything that mattered: methodically, without sentiment. She hadn't expected to need it at midnight on a Tuesday, but Isolde hadn't answered her phone in four days, and the pendant had started burning against her sternum somewhere around Hammersmith. Not painfully. Just insistently. The way a person taps their finger on a table when they're waiting for an answer. She found the split elm and turned left. The park was never truly silent, even at this hour. Foxes moved through the bracken, deer stood like dark furniture between the trees, the distant hum of the South Circular bled through on still nights. Rory had expected all of that. What she hadn't expected was the quality of the silence she walked into now — a silence that felt less like the absence of sound and more like the held breath before one. She stopped. The pendant pulsed once, slow and warm, against her ribs. She walked on. The standing stones came into view between the oaks, eight of them arranged in a rough ellipse, their surfaces silvered by a moon that sat too bright and too full for what her weather app had told her. She'd checked it on the bus. Seventy percent cloud cover, it had said. Yet here the sky sat clear and strange above the grove, as though the clouds had been asked to leave. Rory stepped between two of the stones. The temperature dropped. Not the creeping cold of a November night but a sudden subtraction of warmth, the way heat leaves a room when a window breaks. She pulled her jacket tighter and stood still for a moment, letting her eyes adjust. The wildflowers were there, white and yellow and a deep arterial red she couldn't name, blooming in clusters at the base of each stone the way Isolde had said they always bloomed, regardless of season. She focused on them. Something ordinary to look at. "Isolde." Her voice sounded smaller than she intended. Not frightened — just contained, as though the grove had walls she couldn't see. "It's Rory. I've been trying to reach you." Nothing moved. She walked toward the centre of the clearing, her boots pressing down the long grass without sound, and that was the first thing she catalogued consciously: her footsteps made no noise. She stopped and stamped once, deliberately. Nothing. The ground swallowed it. She took out her phone. Full signal, which meant nothing here, Isolde had warned her. The grove interfered with things in ways that didn't follow rules. She tried the number anyway. It rang four times and cut to voicemail. She lowered the phone. At the far edge of the clearing, just past the standing stones on the north side, something moved. She caught it in her periphery — a shift of shadow against shadow, low to the ground and too deliberate to be wind. She turned her head slowly. Nothing there. Just the dark between the oaks, layered and still. She turned back. The wildflowers nearest to her were facing the wrong direction. She was almost certain — she fixed on it, pressing it flat in her mind rather than letting it unseat her — she was almost certain they'd been facing outward when she'd arrived. Now their heads were turned inward. Toward her. Flowers didn't do that. The pendant pulsed again. Twice this time, in quick succession. Rory crouched and pressed her palm flat to the earth the way Isolde had shown her, feeling for what the old woman called the current — the low rhythmic thrum of the grove's pocket boundary, regular as a heartbeat. She pressed down and felt nothing. No thrum. A flatline. She straightened slowly. The sound came from behind her left shoulder: a single exhalation. Not wind. Breath. The kind a body makes, warm and involuntary, close enough that she felt the slight disturbance of air against the back of her neck. Every muscle in her body locked. She turned around. Nothing. Open grass. Wildflowers. The stones. She stood for ten full seconds counting her own pulse, eyes moving across every inch of what she could see. Her scar ached — the crescent on her left wrist, the one she barely noticed anymore — a deep cold ache that started in the bone. She pressed her thumb against it and felt it throb in time with the pendant. Something was watching her from the dark outside the stones. She couldn't see it. She couldn't hear it now. But the certainty settled over her the way certainty did when she'd worked through a problem and arrived at the only remaining answer: she was not alone in the grove, and whatever shared this space with her was not Isolde. The wildflowers turned again. A slow collective rotation, all of them, stems bending without wind. She watched it happen and didn't move. Then the grove went absolutely dark. Not the gradual dimming of cloud crossing the moon — instantaneous, total. Her phone torch was still on. She could see its beam in her hand. But the light stopped roughly three feet in front of her, as though the darkness had a surface. She stood at the edge of her own small circle of light and looked at where the beam died, and waited to see if anything on the other side of it moved.
created_at"2026-02-19T15:07:41.434Z" 2/19/2026, 3:07:41 PM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency973
moderation_latency198
generation_time35086
tokens_prompt1038
tokens_completion1437
native_tokens_prompt1047
native_tokens_completion1297
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"
usage0.022596
router(null)
provider_responses
0
endpoint_id"6d408764-7dd7-4626-bb87-a6cc1589bc86"
id"msg_01WqEurAHU45eQv267FxvFM4"
is_byokfalse
latency972
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
provider_name"Anthropic"
status200
api_type"completions"
id"gen-1771513661-HWv5Pn1DIOHtjmY6lYxp"
upstream_id"msg_01WqEurAHU45eQv267FxvFM4"
total_cost0.022596
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
totalTags1
adverbTagCount0
adverbTags(empty)
dialogueSentences2
tagDensity0.5
leniency1
rawRatio0
effectiveRatio0
79.34% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount968
totalAiIsmAdverbs4
found
0
adverb"truly"
count1
1
adverb"deliberately"
count1
2
adverb"slowly"
count2
highlights
0"truly"
1"deliberately"
2"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)
48.35% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount968
totalAiIsms10
found
0
word"silence"
count2
1
word"pulsed"
count2
2
word"warmth"
count1
3
word"footsteps"
count1
4
word"rhythmic"
count1
5
word"pulse"
count1
6
word"throb"
count1
7
word"absolutely"
count1
highlights
0"silence"
1"pulsed"
2"warmth"
3"footsteps"
4"rhythmic"
5"pulse"
6"throb"
7"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
narrationSentences84
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount0
narrationSentences84
filterMatches(empty)
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences85
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
maxSentenceWordsSeen41
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords978
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
totalMentions18
wordCount969
uniqueNames9
maxNameDensity0.62
worstName"Isolde"
maxWindowNameDensity1.5
worstWindowName"Rory"
discoveredNames
Rory5
Richmond1
Park1
Isolde6
Tuesday1
Hammersmith1
South1
Circular1
November1
persons
0"Rory"
1"Isolde"
2"Circular"
places
0"Richmond"
1"Park"
globalScore1
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences51
glossingSentenceCount0
matches(empty)
97.75% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords1.022
wordCount978
matches
0"Not the creeping cold of a November night but a sudden subtraction of warmth, the way heat leaves a room"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences85
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs32
mean30.56
std27.41
cv0.897
sampleLengths
034
192
220
38
474
52
610
73
871
97
1086
1130
122
1342
1439
154
1657
173
1851
194
2010
2149
223
2344
243
251
265
2761
2859
2922
3050
3132
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount1
totalSentences84
matches
0"been asked"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount2
totalVerbs150
matches
0"were facing"
1"was watching"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount10
semicolonCount0
flaggedSentences8
totalSentences85
ratio0.094
matches
0"She'd walked it twice before, both times in daylight with Isolde beside her, the old woman pointing out the markers — a split elm, a cairn of three flat stones, the place where the ground dipped and the air turned faintly sweet."
1"What she hadn't expected was the quality of the silence she walked into now — a silence that felt less like the absence of sound and more like the held breath before one."
2"Not frightened — just contained, as though the grove had walls she couldn't see."
3"She caught it in her periphery — a shift of shadow against shadow, low to the ground and too deliberate to be wind."
4"She was almost certain — she fixed on it, pressing it flat in her mind rather than letting it unseat her — she was almost certain they'd been facing outward when she'd arrived."
5"Rory crouched and pressed her palm flat to the earth the way Isolde had shown her, feeling for what the old woman called the current — the low rhythmic thrum of the grove's pocket boundary, regular as a heartbeat."
6"Her scar ached — the crescent on her left wrist, the one she barely noticed anymore — a deep cold ache that started in the bone."
7"Not the gradual dimming of cloud crossing the moon — instantaneous, total."
92.50% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount959
adjectiveStacks1
stackExamples
0"deep arterial red she"
adverbCount40
adverbRatio0.04171011470281543
lyAdverbCount13
lyAdverbRatio0.013555787278415016
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences85
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences85
mean11.51
std11.06
cv0.961
sampleLengths
034
14
242
314
432
52
62
716
88
910
1025
116
1233
132
1410
153
1638
176
187
1920
207
213
2224
2315
2435
254
265
278
2814
298
302
3131
326
331
344
355
3610
3711
385
398
404
4118
4223
435
442
459
463
4710
4833
496
50.20% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats4
diversityRatio0.32941176470588235
totalSentences85
uniqueOpeners28
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount3
totalSentences69
matches
0"Just the dark between the"
1"Twice this time, in quick"
2"Then the grove went absolutely"
ratio0.043
40.29% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount31
totalSentences69
matches
0"She knew the path."
1"She'd walked it twice before,"
2"She hadn't expected to need"
3"She found the split elm"
4"She walked on."
5"She'd checked it on the"
6"She pulled her jacket tighter"
7"She focused on them."
8"Her voice sounded smaller than"
9"She walked toward the centre"
10"She stopped and stamped once,"
11"She took out her phone."
12"She tried the number anyway."
13"It rang four times and"
14"She lowered the phone."
15"She caught it in her"
16"She turned her head slowly."
17"She turned back."
18"She was almost certain —"
19"She pressed down and felt"
ratio0.449
61.45% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount55
totalSentences69
matches
0"The last bus had dropped"
1"She knew the path."
2"She'd walked it twice before,"
3"Rory had memorised it the"
4"She hadn't expected to need"
5"The way a person taps"
6"She found the split elm"
7"The park was never truly"
8"Foxes moved through the bracken,"
9"Rory had expected all of"
10"The pendant pulsed once, slow"
11"She walked on."
12"The standing stones came into"
13"She'd checked it on the"
14"Rory stepped between two of"
15"The temperature dropped."
16"She pulled her jacket tighter"
17"The wildflowers were there, white"
18"She focused on them."
19"Something ordinary to look at."
ratio0.797
72.46% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount1
totalSentences69
matches
0"Now their heads were turned"
ratio0.014
79.83% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences34
technicalSentenceCount3
matches
0"Rory had memorised it the way she memorised everything that mattered: methodically, without sentiment."
1"The standing stones came into view between the oaks, eight of them arranged in a rough ellipse, their surfaces silvered by a moon that sat too bright and too fu…"
2"Full signal, which meant nothing here, Isolde had warned her."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags1
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags0
87.4057%