Run: 2026-05-29-01KSSJEFWZ2DP6FZWT2ZEBPF27

Run Details

Duration:
37.3s
Cost:
$0.056400
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 rose out of the dark like the teeth of something long buried, and Rory stopped between them with her breath fogging in the cold. She hadn't expected Richmond Park to feel so enormous after the gates closed. By day it was joggers and prams and the slow grazing of deer; now it was a black country folded inside the city, and the orange smear of London glowed somewhere far behind her, beyond the trees, like the memory of fire. She'd come because Eva had told her to. Because the note — pinned beneath her door in handwriting she didn't recognise — had said the grove, after dark, alone, and because the pendant at her throat had begun to grow warm the moment she'd stepped off the bus. It was warm now. Not the gentle pulse she'd felt before, near the portals, but a steady, insistent heat, as if the crimson stone had swallowed a coal and meant to keep it burning against her sternum. "All right," she said, mostly to hear a voice. "I'm here." The clearing answered with wildflowers. That was the first wrong thing, though she'd half expected it. It was the dead heart of November, and yet the grass at her feet was thick with bloom — bluebells, foxgloves, things she had no name for, all of them faintly luminous, as though they'd drunk moonlight and were giving it back. They shouldn't exist. The codex of the ordinary world said so. And yet here they were, swaying though there was no wind. She crossed the ring of oaks. The air changed as she passed the threshold — thickened, the way water thickens around your ankles when you wade in too deep, too fast. Sound came differently here. Her own footsteps arrived a half-beat late, as if the grove were repeating them back to her after a moment's consideration. Rory turned in a slow circle. Nothing. The clearing was perhaps thirty feet across, ringed by ancient oaks whose branches knitted overhead into a black lattice that let through only fragments of stars. At its centre stood a single flat stone, pale as bone, worn smooth. She waited. She was good at waiting. She'd waited out worse than silence — waited out Evan's moods, the slow tightening of his voice before it broke into something with hands. She knew how to stand very still and read a room. And the thing she read now, standing in the swaying flowers, was that the room was reading her back. A sound came from the treeline. Soft. A single note, almost musical, like a fingernail drawn across a wineglass. Then gone. "Hello?" Her hand had risen to the pendant without her telling it to. The stone scalded her palm. "Eva? Is this your idea of a joke?" The flowers had stopped moving. She noticed it the way you notice a clock that's stopped — not the sound of it but the absence, the sudden weight of nothing where something had been. The luminous bluebells stood rigid. The thickened air pressed close around her ears. And in that held breath she became aware, with the calm and terrible clarity she'd learned to trust, that she was not alone in the grove. She did not look directly at it. That was the trick, the thing some animal part of her understood before her mind could form the rule. There was a shape at the edge of the clearing, just beyond the third oak to her left, and if she turned her head toward it the shape dissolved into branch and shadow and the ordinary architecture of the night. But if she kept her eyes on the pale stone at the centre, kept it fixed there, then at the corner of her vision the shape resolved — tall, too tall, narrow as a closed door, standing where the flowers grew thickest. Perfectly still. Watching. Her mouth had gone dry. "I can see you," she said, and was proud that her voice barely shook. The shape did not move. But somewhere behind her — behind her, where she had been certain nothing stood — the single glassy note sounded again, closer now, and beneath it a second sound, low and wet and rhythmic, that it took her a moment to recognise as breathing. The pendant pulsed once, hard, a heartbeat of pure heat that made her gasp. A portal. The thing the stone warned of. Somewhere very near, the skin between this world and another was thin as a soap bubble, and something on the other side was leaning its weight against it. Rory made herself breathe. In for four, out for four, the way the therapist in Cardiff had taught her, back when her problems had still been the human-sized kind. Don't run. Running was what prey did, and the moment you ran you told the thing in the dark exactly what it was. She kept her eyes on the stone. She kept her feet planted in the cold, glowing grass. "What do you want," she said. Not a question. She didn't expect an answer. She got one. It came not as a voice but as a sensation behind her teeth, a vibration that arranged itself into something almost like a word, almost like her own name spoken by someone who had only ever read it and never heard it aloud. *Malphora.* The flowers all turned their heads toward her at once. She felt it as much as saw it — the soft mass shifting underfoot, every luminous bell pivoting on its stem to face her like a field of small blind eyes. The tall narrow shape at the edge of her vision took a step. She heard it. The grass bending. The deliberate, patient placement of something that had a great deal of time and meant to spend it on her. And the worst of it, the thing that turned the cold in her belly to ice, was that some buried part of her answered to the name. A small terrible click, like a key finding its lock. As if it were hers. As if it had always been hers, and she had only borrowed *Rory*, borrowed *Aurora*, for twenty-five short years, and now the grove had come to collect. She did not run. But her hand closed around the burning pendant, and she took one slow step backward toward the standing stones, toward the orange smear of the ordinary world, and the thing at the edge of her vision took two steps after her, and the wineglass note rang out clear and bright across the silent, watching flowers — and this time it did not fade.
created_at"2026-05-29T09:53:32.754Z" 5/29/2026, 9:53:32 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2765
moderation_latency(null)
generation_time37020
tokens_prompt812
tokens_completion1619
native_tokens_prompt1170
native_tokens_completion2022
native_tokens_completion_images(null)
native_tokens_reasoning53
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"
usage0.0564
router(null)
provider_responses
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endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_019ffTGhmWWyjikw6E357TDg"
is_byokfalse
latency1188
model_permaslug"anthropic/claude-4.8-opus-20260528"
provider_name"Anthropic"
status200
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request_id"req-1780048412-kIaTkug3vY0bJAk905ss"
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upstream_id"msg_019ffTGhmWWyjikw6E357TDg"
total_cost0.0564
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Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags4
adverbTagCount0
adverbTags(empty)
dialogueSentences6
tagDensity0.667
leniency1
rawRatio0
effectiveRatio0
86.43% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1105
totalAiIsmAdverbs3
found
0
adverb"very"
count2
1
adverb"perfectly"
count1
highlights
0"very"
1"perfectly"
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)
63.80% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1105
totalAiIsms8
found
0
word"pulse"
count1
1
word"footsteps"
count1
2
word"silence"
count1
3
word"weight"
count2
4
word"resolved"
count1
5
word"rhythmic"
count1
6
word"pulsed"
count1
highlights
0"pulse"
1"footsteps"
2"silence"
3"weight"
4"resolved"
5"rhythmic"
6"pulsed"
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
emotionTells1
narrationSentences76
matches
0"was proud"
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount0
narrationSentences76
filterMatches
0"notice"
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences78
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen62
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans3
markdownWords3
totalWords1116
ratio0.003
matches
0"Malphora."
1"Rory"
2"Aurora"
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
totalMentions11
wordCount1095
uniqueNames8
maxNameDensity0.37
worstName"Rory"
maxWindowNameDensity0.5
worstWindowName"Rory"
discoveredNames
Rory4
Richmond1
Park1
London1
Eva1
November1
Evan1
Cardiff1
persons
0"Rory"
1"Eva"
2"Evan"
places
0"Richmond"
1"Park"
2"London"
3"Cardiff"
globalScore1
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences48
glossingSentenceCount0
matches(empty)
0.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches3
per1kWords2.688
wordCount1116
matches
0"Not the gentle pulse she'd felt before, near the portals, but a steady, insistent heat, as if the crimson stone had swallo"
1"not the sound of it but the absence, the sudden weight of nothing"
2"not as a voice but as a sensation behind her teeth, a vibration"
38.46% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount3
totalSentences78
matches
0"was that the"
1"trust, that she"
2"was that some"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs31
mean36
std30.24
cv0.84
sampleLengths
027
1103
237
311
45
575
656
746
82
959
1021
1126
125
1368
147
15104
165
1714
1849
1914
2036
2169
2214
233
2443
251
2610
2770
2869
294
3063
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount1
totalSentences76
matches
0"stopped "
47.62% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount4
totalVerbs175
matches
0"were giving"
1"were, swaying"
2"were repeating"
3"was reading"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount11
semicolonCount1
flaggedSentences10
totalSentences78
ratio0.128
matches
0"By day it was joggers and prams and the slow grazing of deer; now it was a black country folded inside the city, and the orange smear of London glowed somewhere far behind her, beyond the trees, like the memory of fire."
1"Because the note — pinned beneath her door in handwriting she didn't recognise — had said the grove, after dark, alone, and because the pendant at her throat had begun to grow warm the moment she'd stepped off the bus."
2"It was the dead heart of November, and yet the grass at her feet was thick with bloom — bluebells, foxgloves, things she had no name for, all of them faintly luminous, as though they'd drunk moonlight and were giving it back."
3"The air changed as she passed the threshold — thickened, the way water thickens around your ankles when you wade in too deep, too fast."
4"She'd waited out worse than silence — waited out Evan's moods, the slow tightening of his voice before it broke into something with hands."
5"She noticed it the way you notice a clock that's stopped — not the sound of it but the absence, the sudden weight of nothing where something had been."
6"But if she kept her eyes on the pale stone at the centre, kept it fixed there, then at the corner of her vision the shape resolved — tall, too tall, narrow as a closed door, standing where the flowers grew thickest."
7"But somewhere behind her — behind her, where she had been certain nothing stood — the single glassy note sounded again, closer now, and beneath it a second sound, low and wet and rhythmic, that it took her a moment to recognise as breathing."
8"She felt it as much as saw it — the soft mass shifting underfoot, every luminous bell pivoting on its stem to face her like a field of small blind eyes."
9"But her hand closed around the burning pendant, and she took one slow step backward toward the standing stones, toward the orange smear of the ordinary world, and the thing at the edge of her vision took two steps after her, and the wineglass note rang out clear and bright across the silent, watching flowers — and this time it did not fade."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1087
adjectiveStacks0
stackExamples(empty)
adverbCount40
adverbRatio0.03679852805887764
lyAdverbCount11
lyAdverbRatio0.010119595216191352
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences78
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences78
mean14.31
std13.48
cv0.942
sampleLengths
027
113
242
38
440
54
633
79
82
95
1011
1142
123
138
1411
156
1625
174
1821
196
201
2126
2213
232
245
2524
2611
2719
286
291
3012
312
3213
335
348
355
3629
375
388
3926
407
4119
4240
4342
442
451
465
4714
485
4944
58.12% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats8
diversityRatio0.41025641025641024
totalSentences78
uniqueOpeners32
50.51% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount1
totalSentences66
matches
0"Somewhere very near, the skin"
ratio0.015
74.55% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount24
totalSentences66
matches
0"She hadn't expected Richmond Park"
1"She'd come because Eva had"
2"It was warm now."
3"she said, mostly to hear"
4"It was the dead heart"
5"They shouldn't exist."
6"She crossed the ring of"
7"Her own footsteps arrived a"
8"She was good at waiting."
9"She'd waited out worse than"
10"She knew how to stand"
11"Her hand had risen to"
12"She noticed it the way"
13"She did not look directly"
14"Her mouth had gone dry."
15"she said, and was proud"
16"She kept her eyes on"
17"She kept her feet planted"
18"She didn't expect an answer."
19"She got one."
ratio0.364
88.79% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount49
totalSentences66
matches
0"The standing stones rose out"
1"She hadn't expected Richmond Park"
2"She'd come because Eva had"
3"It was warm now."
4"she said, mostly to hear"
5"The clearing answered with wildflowers."
6"That was the first wrong"
7"It was the dead heart"
8"They shouldn't exist."
9"The codex of the ordinary"
10"She crossed the ring of"
11"The air changed as she"
12"Sound came differently here."
13"Her own footsteps arrived a"
14"Rory turned in a slow"
15"The clearing was perhaps thirty"
16"She was good at waiting."
17"She'd waited out worse than"
18"She knew how to stand"
19"A sound came from the"
ratio0.742
100.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount3
totalSentences66
matches
0"Because the note — pinned"
1"As if it were hers."
2"As if it had always"
ratio0.045
3.97% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences36
technicalSentenceCount7
matches
0"Not the gentle pulse she'd felt before, near the portals, but a steady, insistent heat, as if the crimson stone had swallowed a coal and meant to keep it burnin…"
1"It was the dead heart of November, and yet the grass at her feet was thick with bloom — bluebells, foxgloves, things she had no name for, all of them faintly lu…"
2"Her own footsteps arrived a half-beat late, as if the grove were repeating them back to her after a moment's consideration."
3"She noticed it the way you notice a clock that's stopped — not the sound of it but the absence, the sudden weight of nothing where something had been."
4"The pendant pulsed once, hard, a heartbeat of pure heat that made her gasp."
5"It came not as a voice but as a sensation behind her teeth, a vibration that arranged itself into something almost like a word, almost like her own name spoken …"
6"The deliberate, patient placement of something that had a great deal of time and meant to spend it on her."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags4
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags3
fancyCount0
fancyTags(empty)
dialogueSentences6
tagDensity0.5
leniency1
rawRatio0
effectiveRatio0
80.4078%