Run: 2026-05-31-01KSYXPEEFSAN5SCJ41Y826HB7

Run Details

Duration:
38.7s
Cost:
$0.058300
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 note had said midnight, and Rory hated that it had said midnight. She pressed through the gap between the standing stones, the ancient oaks rising like petrified sentinels on either side, their bark gone silver under a moon she could no longer quite see. Richmond Park had been ordinary enough on the walk in—the smell of wet grass, the distant grind of traffic past the gates, a fox barking somewhere off toward the ponds. Ordinary. Then she'd crossed the threshold between the stones, and the ordinary had simply stopped. The traffic. The fox. The wind. All of it. Rory stood still and listened to the silence, and it listened back. The Fae Grove unrolled before her, a clearing that had no business existing inside a London park. Wildflowers bloomed everywhere despite it being the dead of October—foxglove and cornflower, primrose pale as bone, every petal lit from within by a light that came from nowhere. There was no moon overhead. There was no sky overhead, exactly. There was a kind of luminous dark, a held-breath grey that made her think of the moment after a candle is snuffed, when the eye still insists it can see. "Hello?" she said. Her voice didn't carry. It dropped at her feet like a stone into deep water and was gone. She'd come because of the letter. *If you want to understand what you are, come to the grove at midnight. Come alone.* No signature. The same elegant, slanting hand that had once accompanied the pendant now warming against her sternum. She touched it through her shirt—the Heartstone, deep crimson, no bigger than her thumbnail. It pulsed against her skin, a faint heartbeat answering her own, a little quicker than she'd like. That was wrong, too. It only did that near a portal. Rory let her hand fall and made herself breathe slow. *Cool head. Think.* That was the thing she was good at, the thing that had gotten her out of Cardiff and out of worse than Cardiff. She catalogued the clearing the way she'd been taught to catalogue a witness statement—for the things that didn't fit. The flowers didn't move. There was no wind, so why should they—but they leaned. Subtly. Toward her, the way sunflowers track the sun. When she turned her head they were upright again, innocent, and the certainty that they'd been leaning curdled in her gut. The light didn't flicker. The shadows did. She caught the first one at the edge of her vision, low against the treeline—a shape that detached itself from the dark between two oaks and slid sideways, smooth as oil, and was gone before she could turn. She turned anyway. Nothing. Wildflowers. The pale gleam of standing stones. The grove looked at her with its lovely, blooming, empty face. "I'm here," she called, and hated how thin she sounded. "You wanted me here. So talk." Nothing answered. But the pendant flared—a hot little throb, almost a sting—and somewhere behind her, very softly, a child laughed. Rory's whole body went cold. She knew that laugh. It was Eva's, from when they were small, from the garden behind the Ellis house with the broken trampoline—a high, delighted, breathless giggle that Rory hadn't heard in twenty years because people don't laugh like that once they grow up. It came from directly behind her, close enough that she should have felt breath on her neck. She did not turn around. Some animal part of her, older than her cleverness, locked her spine rigid and screamed *do not look.* She stared straight ahead at the standing stones, at the way out, and counted her own heartbeats, and the laugh came again—closer now, intimate, just over her right shoulder. A wet, contented sound, the sound of something that has been waiting a long time and is pleased. "You're not Eva," Rory whispered. The laughing stopped. In the silence that followed she heard, for the first time, the breathing. Not hers. It was huge and slow and patient, and it surrounded her—it came from the trees, the flowers, the grey not-sky, as though the entire grove were one vast sleeping lung and she was a mote of dust caught at the back of its throat. In. Out. The flowers swayed with it. *Of course they leaned,* she thought wildly. *They breathe with it. They've always breathed with it.* She took a step toward the stones. The breathing quickened to match her. She took another. The grass beneath her boots was suddenly longer, wetter, coiling around her ankles, and the standing stones—which had been twenty feet away—were now thirty. Forty. The clearing was stretching, opening, the treeline peeling back like a pupil dilating in the dark, and the more she walked the farther the way out receded, and the pendant against her chest was burning now, burning like a coal, screaming *portal, portal, portal* as if she didn't already know that she had walked through a door that was never meant to open for her. Rory stopped. Forced herself to stop. *It feeds on the running. Don't run.* She made herself stand perfectly still in the long wet grass, in the breathing dark, and she did the only thing she could think to do—she did nothing. She refused to give it the chase. And slowly, sullenly, the grove settled. The grass loosened. The stones drifted back to their proper distance, twenty feet, no more. The breathing softened into something almost like sleep. But she was not alone now, and she knew it utterly, the way you know in the dark of your bedroom that someone is sitting on the end of your bed. Something stood among the flowers to her left, just past the turn of her head, tall and patient and not quite still. She could see the suggestion of it in the corner of her eye—pale, narrow, wrong in its proportions, a height that bent at the wrong place. It did not move when she held still. It waited for her to look. "I'm not going to look at you," Rory said softly. Her voice didn't drop this time. The grove had decided to let her be heard. "I came for answers. Give them to me, and I'll go." A long pause. The flowers leaned. Then, from the tall pale shape that she would not, would not turn to see, came a voice like wind through a keyhole—courteous, ancient, and delighted. "But you came alone, little Malphora," it said. "And no one ever leaves a grove the way they came."
created_at"2026-05-31T11:46:19.74Z" 5/31/2026, 11:46:19 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2401
moderation_latency(null)
generation_time38676
tokens_prompt812
tokens_completion1657
native_tokens_prompt1170
native_tokens_completion2098
native_tokens_completion_images(null)
native_tokens_reasoning45
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"
usage0.0583
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01ArZqktb92z4VTSF82EQ5Vt"
is_byokfalse
latency1243
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-1780227979-lMyZxzBSbAKsPERvDzsf"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780227979-RvLx7ZFpREz2vNK8X3Uq"
upstream_id"msg_01ArZqktb92z4VTSF82EQ5Vt"
total_cost0.0583
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
0.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags5
adverbTagCount1
adverbTags
0"Rory said softly [softly]"
dialogueSentences8
tagDensity0.625
leniency1
rawRatio0.2
effectiveRatio0.2
68.38% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1107
totalAiIsmAdverbs7
found
0
adverb"very"
count1
1
adverb"softly"
count2
2
adverb"suddenly"
count1
3
adverb"perfectly"
count1
4
adverb"slowly"
count1
5
adverb"utterly"
count1
highlights
0"very"
1"softly"
2"suddenly"
3"perfectly"
4"slowly"
5"utterly"
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)
68.38% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1107
totalAiIsms7
found
0
word"sentinels"
count1
1
word"silence"
count2
2
word"pulsed"
count1
3
word"flicker"
count1
4
word"throb"
count1
5
word"quickened"
count1
highlights
0"sentinels"
1"silence"
2"pulsed"
3"flicker"
4"throb"
5"quickened"
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
narrationSentences92
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount2
hedgeCount0
narrationSentences92
filterMatches
0"think"
1"know"
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences95
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen65
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans7
markdownWords45
totalWords1091
ratio0.041
matches
0"If you want to understand what you are, come to the grove at midnight. Come alone."
1"Cool head. Think."
2"do not look."
3"Of course they leaned,"
4"They breathe with it. They've always breathed with it."
5"portal, portal, portal"
6"It feeds on the running. Don't run."
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions8
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions18
wordCount1044
uniqueNames10
maxNameDensity0.77
worstName"Rory"
maxWindowNameDensity1.5
worstWindowName"Rory"
discoveredNames
Rory8
Park1
Fae1
Grove1
London1
October1
Heartstone1
Cardiff2
Eva1
Ellis1
persons
0"Rory"
1"Eva"
places
0"Park"
1"Fae"
2"Grove"
3"London"
4"Cardiff"
5"Ellis"
globalScore1
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences51
glossingSentenceCount1
matches
0"not quite still"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount1091
matches(empty)
26.32% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount4
totalSentences95
matches
0"hated that it"
1"did that near"
2"knew that laugh"
3"know that she"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs32
mean34.09
std29.64
cv0.869
sampleLengths
013
177
29
312
486
53
618
771
811
955
1044
117
1260
1316
1420
155
1661
175
1865
195
203
2182
2213
2393
2413
2535
2629
2793
2836
296
3026
3119
93.82% Passive voice overuse
Target: ≤2% passive sentences
passiveCount3
totalSentences92
matches
0"was gone"
1"been taught"
2"was gone"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount2
totalVerbs179
matches
0"was stretching"
1"was burning"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount16
semicolonCount0
flaggedSentences14
totalSentences95
ratio0.147
matches
0"Richmond Park had been ordinary enough on the walk in—the smell of wet grass, the distant grind of traffic past the gates, a fox barking somewhere off toward the ponds."
1"Wildflowers bloomed everywhere despite it being the dead of October—foxglove and cornflower, primrose pale as bone, every petal lit from within by a light that came from nowhere."
2"She touched it through her shirt—the Heartstone, deep crimson, no bigger than her thumbnail."
3"She catalogued the clearing the way she'd been taught to catalogue a witness statement—for the things that didn't fit."
4"There was no wind, so why should they—but they leaned."
5"She caught the first one at the edge of her vision, low against the treeline—a shape that detached itself from the dark between two oaks and slid sideways, smooth as oil, and was gone before she could turn."
6"But the pendant flared—a hot little throb, almost a sting—and somewhere behind her, very softly, a child laughed."
7"It was Eva's, from when they were small, from the garden behind the Ellis house with the broken trampoline—a high, delighted, breathless giggle that Rory hadn't heard in twenty years because people don't laugh like that once they grow up."
8"Some animal part of her, older than her cleverness, locked her spine rigid and screamed *do not look.* She stared straight ahead at the standing stones, at the way out, and counted her own heartbeats, and the laugh came again—closer now, intimate, just over her right shoulder."
9"It was huge and slow and patient, and it surrounded her—it came from the trees, the flowers, the grey not-sky, as though the entire grove were one vast sleeping lung and she was a mote of dust caught at the back of its throat."
10"The grass beneath her boots was suddenly longer, wetter, coiling around her ankles, and the standing stones—which had been twenty feet away—were now thirty."
11"She made herself stand perfectly still in the long wet grass, in the breathing dark, and she did the only thing she could think to do—she did nothing."
12"She could see the suggestion of it in the corner of her eye—pale, narrow, wrong in its proportions, a height that bent at the wrong place."
13"Then, from the tall pale shape that she would not, would not turn to see, came a voice like wind through a keyhole—courteous, ancient, and delighted."
84.51% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1062
adjectiveStacks1
stackExamples
0"high, delighted, breathless giggle"
adverbCount54
adverbRatio0.05084745762711865
lyAdverbCount15
lyAdverbRatio0.014124293785310734
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences95
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences95
mean11.48
std11.79
cv1.027
sampleLengths
013
132
230
31
414
52
62
72
83
912
1017
1128
125
136
1430
153
164
1714
186
1914
204
2116
2214
2317
244
257
2610
272
2824
2919
304
3110
321
338
3421
354
363
3738
383
391
401
416
4211
4310
446
452
4618
475
484
4940
49.47% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats13
diversityRatio0.37894736842105264
totalSentences95
uniqueOpeners36
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount3
totalSentences74
matches
0"Then she'd crossed the threshold"
1"*Of course they leaned,* she"
2"Then, from the tall pale"
ratio0.041
74.05% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount27
totalSentences74
matches
0"She pressed through the gap"
1"Her voice didn't carry."
2"It dropped at her feet"
3"She'd come because of the"
4"She touched it through her"
5"It pulsed against her skin,"
6"It only did that near"
7"She catalogued the clearing the"
8"She caught the first one"
9"She turned anyway."
10"she called, and hated how"
11"She knew that laugh."
12"It was Eva's, from when"
13"It came from directly behind"
14"She did not turn around."
15"It was huge and slow"
16"*They breathe with it."
17"They've always breathed with it.*"
18"She took a step toward"
19"She took another."
ratio0.365
81.62% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount56
totalSentences74
matches
0"The note had said midnight,"
1"She pressed through the gap"
2"Richmond Park had been ordinary"
3"Rory stood still and listened"
4"The Fae Grove unrolled before"
5"Wildflowers bloomed everywhere despite it"
6"Her voice didn't carry."
7"It dropped at her feet"
8"She'd come because of the"
9"The same elegant, slanting hand"
10"She touched it through her"
11"It pulsed against her skin,"
12"That was wrong, too."
13"It only did that near"
14"Rory let her hand fall"
15"She catalogued the clearing the"
16"The flowers didn't move."
17"The light didn't flicker."
18"The shadows did."
19"She caught the first one"
ratio0.757
67.57% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount1
totalSentences74
matches
0"*If you want to understand"
ratio0.014
0.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences35
technicalSentenceCount7
matches
0"Wildflowers bloomed everywhere despite it being the dead of October—foxglove and cornflower, primrose pale as bone, every petal lit from within by a light that …"
1"The same elegant, slanting hand that had once accompanied the pendant now warming against her sternum."
2"She catalogued the clearing the way she'd been taught to catalogue a witness statement—for the things that didn't fit."
3"A wet, contented sound, the sound of something that has been waiting a long time and is pleased."
4"It was huge and slow and patient, and it surrounded her—it came from the trees, the flowers, the grey not-sky, as though the entire grove were one vast sleeping…"
5"The grass beneath her boots was suddenly longer, wetter, coiling around her ankles, and the standing stones—which had been twenty feet away—were now thirty."
6"The clearing was stretching, opening, the treeline peeling back like a pupil dilating in the dark, and the more she walked the farther the way out receded, and …"
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags5
uselessAdditionCount0
matches(empty)
50.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags5
fancyCount1
fancyTags
0"Rory whispered (whisper)"
dialogueSentences8
tagDensity0.625
leniency1
rawRatio0.2
effectiveRatio0.2
78.8043%