Run: 2026-02-19-01KHTRA38NMDNCVJFMA6PJ4PY2

Run Details

Duration:
47.1s
Cost:
$0.038703
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 mist clung to Richmond Park like a lover's embrace, turning the familiar landscape into something alien and unrecognizable. Rory checked the location on her phone one last time before tucking it away. The screen had shown her exactly where to go, but the coordinates made little sense now that she stood among the ancient oaks, their gnarled branches reaching toward the night sky like arthritic fingers. She'd come because of the pendant. Three nights in a row, she'd woken to find it pulsing against her chest, warm and insistent. Tonight, it had nearly burned her skin, and when she'd held it in her palm, it had tugged—actually tugged—in this direction. "This is mad," Rory muttered, her breath clouding in the unseasonable chill. "Following a bloody necklace into a park at midnight." The Heartstone swung from her fingers, its deep crimson catching what little moonlight filtered through the fog. It pulsed once, twice, then settled into a steady, faint glow that pointed ahead. Rory followed, dried leaves crunching beneath her boots. She'd dressed sensibly—heavy jacket, jeans, sturdy footwear—but the cold still seeped through, raising gooseflesh on her arms. The pendant grew warmer as she walked deeper into the woods, away from the paths tourists traveled during daylight hours. The standing stones appeared suddenly through the mist—ancient oaks petrified into monoliths, arranged in a rough circle. Rory's steps faltered. She'd lived in London for three years now, visited Richmond Park dozens of times, but never encountered this. The stones stood silent, sentinels guarding secrets older than human memory. "Right then," she whispered, stepping between two of the massive stones. The world... shifted. The mist remained, but the quality of the air changed. It smelled of wildflowers and summer rain, despite being the middle of October. Ahead lay a clearing bathed in soft, directionless light. Flowers bloomed underfoot—foxglove, primrose, bluebells—flowers that shouldn't bloom together, shouldn't bloom at all this time of year. The Heartstone burned hot against her skin now, no longer pulling her forward but thrumming with energy. Rory loosened her jacket, suddenly too warm in the unseasonable air. She'd found it—the Fae Grove that odd little book had mentioned, the one she'd discovered wedged behind the bar when helping Silas clean. The one she'd dismissed as fantasy until the pendant began its strange behavior. Rory checked her watch—12:17 AM. She'd give herself half an hour to explore, then head back. Evan would never think to look for her here if he was still stalking her. Nobody would. The first prickle of unease came when she realized she couldn't hear the distant sound of London anymore—no planes overhead, no far-off traffic. Only silence, broken occasionally by what might have been wind through leaves. Except there was no wind. Rory moved toward the center of the clearing where a flat stone rose from the ground like an altar. The Heartstone pulled harder, nearly choking her as the chain tightened around her neck. A twig snapped behind her. Rory whirled around, heart hammering. Nothing but mist and flowers and ancient trees. "Hello?" Her voice sounded wrong—too loud and simultaneously muffled, as if the air itself swallowed sound. No answer came. She turned back to the stone altar, but something caught her eye—movement at the periphery of her vision. When she looked directly, nothing was there. The pendant burned against her chest. Rory pulled it out, held it before her like a talisman. Its crimson depths seemed to swirl, patterns forming and dissolving too quickly to interpret. Another sound—the rustle of cloth, perhaps, or dry leaves sliding across stone. It came from everywhere and nowhere. "I know someone's there." Her voice betrayed her with a slight tremor. "Show yourself." Something whispered behind her—not words, but a sound like pages turning, rapid and rhythmic. Rory spun again and caught a glimpse of—what? A shadow? A figure? It disappeared the moment she focused on it. The flowers around the altar had changed. When had that happened? Where minutes before bloomed colorful wildflowers, now grew pale, spectral blooms—ghost orchids and moon flowers, their petals luminescent in the strange half-light. Time. The book had mentioned time moving differently in the Grove. Rory checked her watch again. The hands hadn't moved. The digital display read the same—12:17 AM. But that couldn't be right. She'd been here at least ten minutes. A soft sound drew her attention—a gentle splashing, like stones dropped into still water. It came from beyond a curtain of willow branches that hadn't been there before. The rational part of Rory's mind—the part that had nearly completed a law degree before she'd fled Cardiff—told her to leave immediately. Nothing good came from investigating strange noises in stranger places. But the pendant pulled her forward, and her curiosity had always been stronger than her caution. The willow branches parted at her touch, revealing a small pool of water so clear it might have been glass. The surface rippled, though nothing disturbed it. Rory knelt beside it, drawn by a compulsion she couldn't name. The Heartstone swung from her neck, dangling over the water. Its reflection showed not crimson but midnight blue, swirling with stars. "What are you?" Rory whispered. The pendant answered with a pulse of heat that nearly scorched her fingers when she touched it. In the water, something moved. Not a reflection—something beneath the surface, dark and sinuous. Rory leaned closer, squinting to make out its shape. Eyes opened underwater, meeting hers. Human eyes in a face that was almost, but not quite, human. Rory jerked backward, falling onto the soft ground. The surface of the pool remained undisturbed, as if she'd imagined it. But she hadn't. She was certain of that. A laugh echoed through the clearing—high and musical and utterly inhuman. It bounced from stone to stone, multiplying until it seemed to come from a dozen throats. "Who's there?" Rory climbed to her feet, turning in a slow circle. "What do you want?" The laughter stopped. The sudden silence pressed against her eardrums like deep water. "You brought it back," came a voice, soft and sibilant, from directly behind her. Rory whirled, but again, nothing was there. "I don't know what you're talking about." Her hand closed protectively around the pendant. The mist thickened, coiling around her ankles like living smoke. It climbed higher, wrapping around her calves in a gentle but insistent embrace. "The Heartstone," the voice came again, this time from her right. "You've brought it home." Rory turned toward the sound and for an instant saw a figure—tall and slender, with limbs too long and joints that bent wrong. It dissolved into mist before she could make out details. "I didn't know it belonged to anyone." Rory backed away, bumping into one of the standing stones. The mist followed, clinging to her like cobwebs. "I found it." "Did you?" The voice came from directly above her now. "Or did it find you, Aurora Carter?" The use of her full name sent ice through Rory's veins. She looked up slowly, dreading what she might see. Nothing but branches and mist. The pendant burned against her skin, its glow intensifying until it shone through her jacket like a miniature sun. "What do you want from me?" Her voice emerged steadier than she felt. "Want?" The word echoed from multiple directions. "Nothing you haven't already given freely by crossing the threshold." The mist rose higher, curling around her waist, her chest, her throat. It caressed her face with fingers of vapor that left moisture beading on her skin. "I haven't given anything," Rory said, struggling to keep her voice level. "And I'm leaving now." She turned toward where she thought the entrance lay, but the standing stones surrounded her in an unbroken circle. Which ones had she passed through? They all looked identical now. The pendant jerked, hard enough to snap her head forward. It pulled toward one pair of stones, the glow dimming slightly. Trusting the one thing that had guided her here, Rory moved in that direction, the mist trailing from her body like reluctant hands. "The Heartstone remembers the way," came the voice, closer now. "But are you certain you wish to leave so soon? Time moves differently here. Perhaps it's already too late." Rory reached the gap between the stones, relief flooding through her. But before she could step through, something moved in her peripheral vision—something tall and angular and wrong. This time, when she turned, it didn't vanish. Human but not, hidden partially by mist yet unmistakably present. Its proportions were subtly wrong—limbs too long, fingers too numerous, features beautiful but alien. Eyes like the ones she'd seen in the pool regarded her with ancient amusement. "The door swings both ways, Aurora Carter." It smiled, revealing teeth too sharp and numerous. "You may leave now, if you wish. But the Heartstone has tasted home. It will call you back. And next time..." The figure stepped closer, mist swirling around it like a cloak. "Next time, perhaps we'll have more time to talk about what else you carry inside you. Something far more valuable than a simple trinket." Rory backed through the standing stones, the pendant suddenly cold against her skin. The mist dissolved, the otherworldly light faded, and the sounds of distant London returned—a siren, the rumble of a late-night lorry. She glanced at her watch. 3:42 AM. Three and a half hours, gone in what had felt like minutes. Rory turned and ran, not stopping until she reached the park gates, the Heartstone silent and cold against her thundering heart.
created_at"2026-02-19T10:49:39.865Z" 2/19/2026, 10:49:39 AM
model"anthropic/claude-3-7-sonnet-20250219"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency368
moderation_latency(null)
generation_time46882
tokens_prompt1038
tokens_completion2582
native_tokens_prompt1046
native_tokens_completion2371
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"
usage0.038703
router(null)
provider_responses
0
endpoint_id"1347c8dc-12f5-47df-8355-3ec7e80a8c67"
id"msg_018y9TPoUqm9UGpzDiSJ4DnK"
is_byokfalse
latency368
model_permaslug"anthropic/claude-3-7-sonnet-20250219"
provider_name"Anthropic"
status200
api_type"completions"
id"gen-1771498179-IRz3I9Ei8gTR79kjoKea"
upstream_id"msg_018y9TPoUqm9UGpzDiSJ4DnK"
total_cost0.038703
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"

Evaluation details

Result Evaluator Details Meta Data
57.14% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags14
adverbTagCount2
adverbTags
0"Her hand closed protectively [protectively]"
1"the voice came again [again]"
dialogueSentences27
tagDensity0.519
leniency1
rawRatio0.143
effectiveRatio0.143
78.41% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1621
totalAiIsmAdverbs7
found
0
adverb"suddenly"
count3
1
adverb"quickly"
count1
2
adverb"utterly"
count1
3
adverb"slowly"
count1
4
adverb"slightly"
count1
highlights
0"suddenly"
1"quickly"
2"utterly"
3"slowly"
4"slightly"
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)
56.82% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1621
totalAiIsms14
found
0
word"familiar"
count1
1
word"chill"
count1
2
word"pulsed"
count1
3
word"sturdy"
count1
4
word"sentinels"
count1
5
word"silence"
count2
6
word"depths"
count1
7
word"rhythmic"
count1
8
word"spectral"
count1
9
word"pulse"
count1
10
word"echoed"
count2
11
word"otherworldly"
count1
highlights
0"familiar"
1"chill"
2"pulsed"
3"sturdy"
4"sentinels"
5"silence"
6"depths"
7"rhythmic"
8"spectral"
9"pulse"
10"echoed"
11"otherworldly"
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
narrationSentences131
matches(empty)
88.33% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount3
hedgeCount2
narrationSentences131
filterMatches
0"watch"
hedgeMatches
0"seemed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences142
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
maxSentenceWordsSeen34
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1592
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions6
unquotedAttributions0
matches(empty)
58.77% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions44
wordCount1425
uniqueNames10
maxNameDensity1.82
worstName"Rory"
maxWindowNameDensity3
worstWindowName"Rory"
discoveredNames
Richmond2
Park2
Heartstone5
London3
October1
Fae1
Grove2
Silas1
Rory26
Cardiff1
persons
0"Heartstone"
1"Silas"
2"Rory"
places
0"Richmond"
1"Park"
2"London"
3"Fae"
4"Grove"
5"Cardiff"
globalScore0.588
windowScore0.667
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences104
glossingSentenceCount2
matches
0"not quite human"
1"felt like minutes"
11.56% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches3
per1kWords1.884
wordCount1592
matches
0"no longer pulling her forward but"
1"not words, but a sound like pages turning, rapid"
2"not crimson but midnight blue, swirling with stars"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences142
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs72
mean22.11
std12.55
cv0.568
sampleLengths
067
144
221
331
445
549
611
73
849
928
1036
1133
1235
135
1433
155
1613
1716
183
1925
2031
2118
2214
2334
2433
2511
2616
2712
2828
2932
3016
3127
3232
335
3417
3523
3617
3720
388
3927
4016
4113
4214
437
4414
4523
4615
4733
4828
4917
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount0
totalSentences131
matches(empty)
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount0
totalVerbs263
matches(empty)
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount26
semicolonCount0
flaggedSentences22
totalSentences142
ratio0.155
matches
0"Tonight, it had nearly burned her skin, and when she'd held it in her palm, it had tugged—actually tugged—in this direction."
1"She'd dressed sensibly—heavy jacket, jeans, sturdy footwear—but the cold still seeped through, raising gooseflesh on her arms."
2"The standing stones appeared suddenly through the mist—ancient oaks petrified into monoliths, arranged in a rough circle."
3"Flowers bloomed underfoot—foxglove, primrose, bluebells—flowers that shouldn't bloom together, shouldn't bloom at all this time of year."
4"She'd found it—the Fae Grove that odd little book had mentioned, the one she'd discovered wedged behind the bar when helping Silas clean."
5"Rory checked her watch—12:17 AM."
6"The first prickle of unease came when she realized she couldn't hear the distant sound of London anymore—no planes overhead, no far-off traffic."
7"\"Hello?\" Her voice sounded wrong—too loud and simultaneously muffled, as if the air itself swallowed sound."
8"She turned back to the stone altar, but something caught her eye—movement at the periphery of her vision."
9"Another sound—the rustle of cloth, perhaps, or dry leaves sliding across stone."
10"Something whispered behind her—not words, but a sound like pages turning, rapid and rhythmic."
11"Rory spun again and caught a glimpse of—what?"
12"Where minutes before bloomed colorful wildflowers, now grew pale, spectral blooms—ghost orchids and moon flowers, their petals luminescent in the strange half-light."
13"The digital display read the same—12:17 AM."
14"A soft sound drew her attention—a gentle splashing, like stones dropped into still water."
15"The rational part of Rory's mind—the part that had nearly completed a law degree before she'd fled Cardiff—told her to leave immediately."
16"Not a reflection—something beneath the surface, dark and sinuous."
17"A laugh echoed through the clearing—high and musical and utterly inhuman."
18"Rory turned toward the sound and for an instant saw a figure—tall and slender, with limbs too long and joints that bent wrong."
19"But before she could step through, something moved in her peripheral vision—something tall and angular and wrong."
20"Its proportions were subtly wrong—limbs too long, fingers too numerous, features beautiful but alien."
21"The mist dissolved, the otherworldly light faded, and the sounds of distant London returned—a siren, the rumble of a late-night lorry."
91.07% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1454
adjectiveStacks0
stackExamples(empty)
adverbCount73
adverbRatio0.050206327372764786
lyAdverbCount27
lyAdverbRatio0.018569463548830812
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences142
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences142
mean11.21
std6
cv0.535
sampleLengths
019
114
234
36
417
521
612
79
817
914
108
1117
1220
1317
143
1518
1611
1711
182
191
2010
2113
229
2317
2417
2511
2623
2713
285
2911
3015
312
3223
3312
345
3519
3614
375
385
398
4016
413
4218
437
446
4511
4614
4712
486
4912
49.30% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats5
diversityRatio0.31690140845070425
totalSentences142
uniqueOpeners45
27.10% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount1
totalSentences123
matches
0"Only silence, broken occasionally by"
ratio0.008
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount31
totalSentences123
matches
0"She'd come because of the"
1"It pulsed once, twice, then"
2"She'd dressed sensibly—heavy jacket, jeans,"
3"She'd lived in London for"
4"she whispered, stepping between two"
5"It smelled of wildflowers and"
6"She'd found it—the Fae Grove"
7"She'd give herself half an"
8"Her voice sounded wrong—too loud"
9"She turned back to the"
10"Its crimson depths seemed to"
11"It came from everywhere and"
12"Her voice betrayed her with"
13"It disappeared the moment she"
14"She'd been here at least"
15"It came from beyond a"
16"Its reflection showed not crimson"
17"She was certain of that."
18"It bounced from stone to"
19"Her hand closed protectively around"
ratio0.252
37.24% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount104
totalSentences123
matches
0"The mist clung to Richmond"
1"Rory checked the location on"
2"The screen had shown her"
3"She'd come because of the"
4"Tonight, it had nearly burned"
5"Rory muttered, her breath clouding"
6"The Heartstone swung from her"
7"It pulsed once, twice, then"
8"Rory followed, dried leaves crunching"
9"She'd dressed sensibly—heavy jacket, jeans,"
10"The pendant grew warmer as"
11"The standing stones appeared suddenly"
12"Rory's steps faltered."
13"She'd lived in London for"
14"The stones stood silent, sentinels"
15"she whispered, stepping between two"
16"The mist remained, but the"
17"It smelled of wildflowers and"
18"Flowers bloomed underfoot—foxglove, primrose, bluebells—flowers"
19"The Heartstone burned hot against"
ratio0.846
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences123
matches(empty)
ratio0
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences70
technicalSentenceCount1
matches
0"Trusting the one thing that had guided her here, Rory moved in that direction, the mist trailing from her body like reluctant hands."
17.86% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags14
uselessAdditionCount3
matches
0"Rory muttered, her breath clouding in the unseasonable chill"
1"Her voice sounded, as if the air itself swallowed sound"
2"Rory said, struggling to keep her voice level"
38.89% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags4
fancyCount3
fancyTags
0"Rory muttered (mutter)"
1"she whispered (whisper)"
2"Rory whispered (whisper)"
dialogueSentences27
tagDensity0.148
leniency0.296
rawRatio0.75
effectiveRatio0.222
73.7492%