Run: 2026-02-24-01KJ8TXDQAAPFAZCTNTCSYB4BZ

Run Details

Duration:
47.6s
Cost:
$0.031023
Provider:
Anthropic

Model input

System
You are an expert novelist with a gift for vivid, immersive prose. You write in tight third-person limited point of view with a strong narrative voice. Your prose is clean, precise, and engaging — you favor strong verbs, concrete details, and natural-sounding dialogue. You will be given a story bible (codex) containing canonical details about characters, locations, items, and lore. Use these details to ground your writing in the established world. Stay consistent with the codex. Write only the prose of the scene. Do not include titles, chapter headings, markdown formatting, or any commentary before or after the scene.
User/Human
<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> 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.

Model response

AI
The standing stones were wrong. Rory noticed it the moment she ducked beneath the low-hanging branch that marked the informal threshold to the grove — the way her eyes slid off the nearest oak as if the bark itself refused to be looked at directly. She blinked. Looked again. The stone was there, solid and ancient, three feet wide and shouldered with pale lichen. Nothing wrong with it. She was just tired. She'd cycled from the Kew Road gate in the dark and her eyes were still adjusting, and the moon was thin and the path through Richmond Park at half past eleven on a Tuesday was not exactly well-lit. She breathed out through her nose and stepped inside the boundary. The grove received her the way it always did — a faint pressure change, like descent in an aeroplane, her ears popping once and then settling. The temperature shifted, not warmer exactly, but less cold. More neutral. The air tasted green. Overhead, the canopy closed over the clearing in a rough circle, and through it she could see a scatter of stars that had not been visible from the park path, which probably meant something, though she'd never worked out precisely what. The wildflowers were blooming. Of course they were. It was November, and they bloomed regardless, pale clusters of them catching whatever vestigial light filtered down through the branches. She'd stopped being surprised by that weeks ago. She picked her way to the centre of the clearing and crouched to check the ground, looking for the marker she'd left at her last visit — a small flat stone with a scratch across it, her own crude notation system, nothing magic about it, just a way to track where exactly she'd stood when the pendant had last reacted. She found the stone, confirmed the scratch, and straightened up. She pressed two fingers to the Heartstone through the fabric of her jacket. It sat cool and inert against her sternum. Which was the whole problem. She'd come because it had stopped. Four days ago the pendant had pulsed warm the moment she'd stepped inside the grove boundary — a steady, faint throb she'd come to recognise, not unpleasant, like holding a hand to a radiator in another room. But yesterday it had gone quiet. Today it had remained quiet. She'd needed to know whether the quiet was in the stone or in the location, and the only way to know that was to come back at the same time, on foot, the same approach route, and stand in the same spot and pay attention. She counted to thirty. The pendant stayed cold. She unclenched her jaw. Fine. She'd note this and leave. She became aware of the silence only as she was turning to go — becoming aware the way you become aware of a noise that has stopped, that retroactive recognition of an absence. The grove had been quiet when she'd arrived, but there had been background: the distant mutter of the A316, the creak of branches, some small animal foraging somewhere in the undergrowth. She hadn't been conscious of listening for those things, but now that they were gone she felt their absence like a pressure against her eardrums. She stood still. The wildflowers at the edge of the clearing moved. A slow, continuous ripple along the nearest cluster, like fingers running through hair. There was no wind. Rory did not run. She'd learned, somewhere between Cardiff and here, between one version of herself and this one, that running was the thing that made situations worse, that cool was a skill and not a temperament. She turned a slow full circle, eyes tracking the perimeter between the standing stones. The oak trunks were dark. The spaces between them were darker. She counted eight visible gaps around the clearing's edge, the interstices where the boundary had its weak points, and she watched each of them in turn the way she'd learned to read a room when she'd lived with Evan — not looking for the threat directly, but holding her attention wide, catching movement in the periphery before it resolved into anything she had to name. There was nothing. And the nothing was very loud. She touched the pendant again, bare skin this time, working her fingers beneath her collar. Still cold. Still quiet. She took two steps toward the north exit, the way she'd come, and stopped. Something was breathing. It wasn't nearby — or rather, she couldn't tell how near it was, because the grove did things to sound, bent it around the canopy and redirected it at angles that made distance impossible to estimate. But it was regular. Slow. Patient. An in-breath that lasted slightly too long and an out-breath that released with something almost like consideration, as if whatever was producing it was doing so thoughtfully, deliberately. As if it had noticed she was listening and was letting her listen. The hair lifted on the back of her neck with an almost clinical precision. She moved to the exit. Not running. Measured, deliberate steps, her weight forward, her hands free. Three steps from the north gap between two of the standing oaks, she glanced back once — a quick check, nothing more — and in the centre of the clearing, exactly where she'd been crouching to look at her marked stone, there was a shape. It was dark. It was roughly human in outline. It was quite still, in the manner of things that do not need to move because they are not afraid of you, and the difference between that kind of stillness and all other kinds is something the body understands before the mind does. The clearing was forty feet wide. The moon had slipped behind the canopy. She could not see the shape's face and she did not want to. The Heartstone pressed against her fingers, still cold, still silent — and in its silence she understood something that hadn't occurred to her before: warmth near a Hel portal. The pendant pulsed near portals. Near doors. Near openings. The absence of warmth didn't mean nothing was here. It meant she was not near a door. It meant whatever was in this clearing with her had not come through one. She stepped back through the standing stones, met the cold air of the park on the other side, and walked — still not running, still measured, though her hands were shaking now and she could feel her heart in her throat — walked until the stones were behind her, until the pressure in her ears popped again and the sound of the A316 came back and gravel crunched under her trainers. She did not look back. She'd learned that too, somewhere between one city and another. She walked until she found the path. Then she allowed herself to pedal fast. Behind her, through the treeline, through the standing oaks and the inert stone boundary she had always believed kept things out as much as it kept the grove concealed, something exhaled. Long. Slow. Patient. She didn't hear it. But her left wrist ached, the small crescent scar gone suddenly cold, and she'd stopped dismissing things like that weeks ago.
created_at"2026-02-24T22:04:32.37Z" 2/24/2026, 10:04:32 PM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency998
moderation_latency(null)
generation_time47587
tokens_prompt812
tokens_completion2106
native_tokens_prompt856
native_tokens_completion1897
native_tokens_completion_images(null)
native_tokens_reasoning332
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"
usage0.031023
router(null)
provider_responses
0
endpoint_id"6d408764-7dd7-4626-bb87-a6cc1589bc86"
id"msg_019dJSspX1sec1q7Xdz6tRM1"
is_byokfalse
latency992
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
provider_name"Anthropic"
status200
api_type"completions"
id"gen-1771970672-CyHgGIDHxgo50coIF8lY"
upstream_id"msg_019dJSspX1sec1q7Xdz6tRM1"
total_cost0.031023
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
79.06% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1194
totalAiIsmAdverbs5
found
0
adverb"precisely"
count1
1
adverb"very"
count1
2
adverb"slightly"
count1
3
adverb"deliberately"
count1
4
adverb"suddenly"
count1
highlights
0"precisely"
1"very"
2"slightly"
3"deliberately"
4"suddenly"
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)
49.75% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1194
totalAiIsms12
found
0
word"pulsed"
count2
1
word"throb"
count1
2
word"silence"
count2
3
word"resolved"
count1
4
word"measured"
count2
5
word"weight"
count1
6
word"warmth"
count2
7
word"could feel"
count1
highlights
0"pulsed"
1"throb"
2"silence"
3"resolved"
4"measured"
5"weight"
6"warmth"
7"could feel"
100.00% Cliché density
Target: ≤1 cliche(s) per 800-word window
totalCliches1
maxInWindow1
found
0
label"clenched jaw/fists"
count1
highlights
0"clenched her jaw"
100.00% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences88
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount0
narrationSentences88
filterMatches
0"listen"
hedgeMatches(empty)
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
maxSentenceWordsSeen69
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1206
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions3
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions11
wordCount1206
uniqueNames10
maxNameDensity0.17
worstName"Heartstone"
maxWindowNameDensity0.5
worstWindowName"Heartstone"
discoveredNames
Kew1
Road1
Richmond1
Park1
Tuesday1
November1
Heartstone2
Cardiff1
Evan1
Hel1
persons
0"Evan"
places
0"Kew"
1"Road"
2"Richmond"
3"Park"
4"Cardiff"
5"Hel"
globalScore1
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences50
glossingSentenceCount0
matches(empty)
34.16% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches2
per1kWords1.658
wordCount1206
matches
0"not warmer exactly, but less cold"
1"not looking for the threat directly, but holding her attention wide, catching movement in the periphe"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences88
matches
0"like that weeks"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs30
mean40.2
std33.09
cv0.823
sampleLengths
05
1105
211
382
436
591
65
799
88
910
1089
113
1226
1337
1490
159
1619
1714
1886
1914
2061
2152
2226
2355
2414
2571
2615
2714
2834
2925
97.29% Passive voice overuse
Target: ≤2% passive sentences
passiveCount2
totalSentences88
matches
0"being surprised"
1"were gone"
0.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount9
totalVerbs195
matches
0"were still adjusting"
1"were blooming"
2"was turning"
3"was breathing"
4"was producing"
5"was doing"
6"was listening"
7"was letting"
8"were shaking"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount12
semicolonCount0
flaggedSentences10
totalSentences88
ratio0.114
matches
0"Rory noticed it the moment she ducked beneath the low-hanging branch that marked the informal threshold to the grove — the way her eyes slid off the nearest oak as if the bark itself refused to be looked at directly."
1"The grove received her the way it always did — a faint pressure change, like descent in an aeroplane, her ears popping once and then settling."
2"She picked her way to the centre of the clearing and crouched to check the ground, looking for the marker she'd left at her last visit — a small flat stone with a scratch across it, her own crude notation system, nothing magic about it, just a way to track where exactly she'd stood when the pendant had last reacted."
3"Four days ago the pendant had pulsed warm the moment she'd stepped inside the grove boundary — a steady, faint throb she'd come to recognise, not unpleasant, like holding a hand to a radiator in another room."
4"She became aware of the silence only as she was turning to go — becoming aware the way you become aware of a noise that has stopped, that retroactive recognition of an absence."
5"She counted eight visible gaps around the clearing's edge, the interstices where the boundary had its weak points, and she watched each of them in turn the way she'd learned to read a room when she'd lived with Evan — not looking for the threat directly, but holding her attention wide, catching movement in the periphery before it resolved into anything she had to name."
6"It wasn't nearby — or rather, she couldn't tell how near it was, because the grove did things to sound, bent it around the canopy and redirected it at angles that made distance impossible to estimate."
7"Three steps from the north gap between two of the standing oaks, she glanced back once — a quick check, nothing more — and in the centre of the clearing, exactly where she'd been crouching to look at her marked stone, there was a shape."
8"The Heartstone pressed against her fingers, still cold, still silent — and in its silence she understood something that hadn't occurred to her before: warmth near a Hel portal."
9"She stepped back through the standing stones, met the cold air of the park on the other side, and walked — still not running, still measured, though her hands were shaking now and she could feel her heart in her throat — walked until the stones were behind her, until the pressure in her ears popped again and the sound of the A316 came back and gravel crunched under her trainers."
97.72% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1197
adjectiveStacks0
stackExamples(empty)
adverbCount51
adverbRatio0.042606516290726815
lyAdverbCount15
lyAdverbRatio0.012531328320802004
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
mean13.7
std15.47
cv1.129
sampleLengths
05
140
22
32
415
54
64
738
811
926
109
112
124
1341
144
154
1620
178
1860
1910
2013
218
225
236
2437
256
265
2745
284
294
304
311
325
3333
3431
3525
363
379
3813
394
404
4133
4214
435
446
4565
463
476
4815
492
32.95% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats21
diversityRatio0.3409090909090909
totalSentences88
uniqueOpeners30
90.09% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount2
totalSentences74
matches
0"Of course they were."
1"Then she allowed herself to"
ratio0.027
30.81% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount35
totalSentences74
matches
0"She was just tired."
1"She'd cycled from the Kew"
2"She breathed out through her"
3"It was November, and they"
4"She'd stopped being surprised by"
5"She picked her way to"
6"She found the stone, confirmed"
7"She pressed two fingers to"
8"It sat cool and inert"
9"She'd come because it had"
10"She'd needed to know whether"
11"She counted to thirty."
12"She unclenched her jaw."
13"She'd note this and leave."
14"She became aware of the"
15"She hadn't been conscious of"
16"She stood still."
17"She'd learned, somewhere between Cardiff"
18"She turned a slow full"
19"She counted eight visible gaps"
ratio0.473
68.11% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount58
totalSentences74
matches
0"The standing stones were wrong."
1"Rory noticed it the moment"
2"The stone was there, solid"
3"Nothing wrong with it."
4"She was just tired."
5"She'd cycled from the Kew"
6"She breathed out through her"
7"The grove received her the"
8"The temperature shifted, not warmer"
9"The air tasted green."
10"The wildflowers were blooming."
11"It was November, and they"
12"She'd stopped being surprised by"
13"She picked her way to"
14"She found the stone, confirmed"
15"She pressed two fingers to"
16"It sat cool and inert"
17"She'd come because it had"
18"She'd needed to know whether"
19"She counted to thirty."
ratio0.784
67.57% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount1
totalSentences74
matches
0"As if it had noticed"
ratio0.014
0.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences34
technicalSentenceCount9
matches
0"Rory noticed it the moment she ducked beneath the low-hanging branch that marked the informal threshold to the grove — the way her eyes slid off the nearest oak…"
1"The grove received her the way it always did — a faint pressure change, like descent in an aeroplane, her ears popping once and then settling."
2"Overhead, the canopy closed over the clearing in a rough circle, and through it she could see a scatter of stars that had not been visible from the park path, w…"
3"She became aware of the silence only as she was turning to go — becoming aware the way you become aware of a noise that has stopped, that retroactive recognitio…"
4"She'd learned, somewhere between Cardiff and here, between one version of herself and this one, that running was the thing that made situations worse, that cool…"
5"It wasn't nearby — or rather, she couldn't tell how near it was, because the grove did things to sound, bent it around the canopy and redirected it at angles th…"
6"An in-breath that lasted slightly too long and an out-breath that released with something almost like consideration, as if whatever was producing it was doing s…"
7"It was quite still, in the manner of things that do not need to move because they are not afraid of you, and the difference between that kind of stillness and a…"
8"The Heartstone pressed against her fingers, still cold, still silent — and in its silence she understood something that hadn't occurred to her before: warmth ne…"
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
78.2504%