Run: 2026-07-09-01KX4102M32QPH487R1XWETPWC

Run Details

Duration:
16.9s
Cost:
$0.015010
Provider:
OpenAI

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
Rory knew Richmond Park well enough to distrust it at night. In daylight, the park was broad and ordinary: mud-dark paths, clipped grass, deer moving through the bracken with the bored authority of old residents. At night, its distances altered. The trees gathered close. The paths seemed to choose where they went. She crossed the last stretch by the light of her phone, though the beam barely reached beyond her shoes. Mist lay low over the grass. It silvered the tips of the wildflowers growing where no wildflowers should have been, blooming in January beneath the bare branches. Her fingers closed around the pendant at her throat. The Heartstone answered with a faint pulse of warmth. Rory stopped. The deep-crimson stone rested against her palm, thumbnail-sized and smooth as if it had been worn there for centuries. Its silver chain had tangled in the collar of her jumper. She worked it free, listening. Nothing. No traffic from the road. No distant voices. No wind. Then, somewhere among the trees, a branch gave a soft, deliberate crack. Rory turned her phone toward it. The beam caught trunks, mist, black undergrowth. Nothing moved. She waited, counting to ten. At seven, something shifted beyond the edge of the light. Not a shape. The suggestion of one. A darker interruption in the darkness, gone when she looked directly at it. She lowered the phone. “Very funny,” she said. Her voice fell flat. The silence absorbed it without an echo. She had come because of the pendant. Three nights ago, it had warmed against her chest while she stood in the kitchen above Silas’ bar. Not faintly, as it sometimes did near the strange disturbances she had learned not to discuss with herself. It had burned hot enough to make her gasp. Then it had pulsed. Once. Twice. Toward Richmond Park. Rory had spent the next day pretending that was not a reason to go. She had delivered takeaway orders through rain and traffic, smiled at strangers, and listened to Yu-Fei complain about suppliers. She had told herself that the pendant had been given to her by an unknown benefactor, and therefore it was not her responsibility to investigate every time it behaved mysteriously. By midnight, she had packed a torch, a phone charger, and the small knife she kept in the drawer beside her bed. The knife felt absurd now. It pressed against her ribs from inside her coat, a thin line of reassurance no more substantial than the phone’s failing battery. The Heartstone pulsed again. Ahead, the mist opened around a line of standing stones. They rose from the grass in a crooked arc, ancient oak made somehow solid, each one thick and black-barked, their roots buried beneath the earth. Rory had seen the stones before. During the day they looked like old trees arranged by accident. At night, they marked something. A boundary. She walked toward them. The flowers thickened as she approached. Bluebells, foxglove, white star-shaped blossoms, and small yellow flowers she did not recognize covered the ground in impossible abundance. Their heads turned toward her. Rory noticed that last detail only after stepping between the first two stones. She stopped with one boot lifted. Every flower nearest the boundary leaned in her direction. The mist slid around her ankles. Behind her, the park remained silent. She put her foot down. For an instant, the world tightened. The air pressed against her ears. Her phone screen flickered. The pendant flashed beneath her fingers, a dull red glow under the skin of the stone. Then the pressure released. Rory stood in a clearing. The grove was larger than it could possibly have been. The trees formed a high wall around it, their branches woven together overhead, but the sky showed through in unfamiliar constellations. Stars crowded the darkness. Some were too bright. Some seemed to move. Wildflowers covered everything. They grew over stones and roots, around a shallow pool at the clearing’s center, and along the narrow path that vanished between the trees opposite her. Their scent was sweet and heavy, almost rotten beneath the sweetness. Rory looked back. The standing stones were there, but the park had vanished beyond them. No road. No city glow. No mist. Only a wall of dark trunks. Her heartbeat thudded once, hard. She took out her phone. The screen showed 12:17 a.m. She had entered the grove at 12:09. Eight minutes. That should have helped. It did not. “Fine,” she murmured. “In, find the portal, out.” The pendant warmed in her hand and pulled—not physically, but with a subtle insistence—toward the pool. She followed. The ground felt soft under her boots. Not muddy. Breathing. Rory kept her eyes on the pool. Its surface was black and perfectly still. No reflection disturbed it. Not the stars. Not the trees. Not her own face. At the edge, she crouched. The pendant’s warmth sharpened. A faint inner glow moved through the crimson stone like a coal beneath ash. A Hel portal, she thought. She had no proof. Only stories, fragments, and the things she had seen since London began peeling back its ordinary skin. But the pendant had behaved this way before, and wherever it pointed, reality became unreliable. Rory leaned closer. Something pale moved beneath the water. She jerked back. The movement stopped. She stared until her eyes watered. The pool remained blank, black as ink. Then a voice said, “Aurora.” It came from behind her. Rory spun, phone raised like a weapon. The clearing was empty. Her breath clouded in front of her. The flowers bowed beneath a passing ripple that moved outward from the center of the grove, though there was no wind. “Who’s there?” Nothing answered. The voice had sounded like her mother. Not exactly. Jennifer’s voice carried a warm Welsh lilt, a softness that could turn stern without warning. This had been close enough to make Rory’s stomach clench. “Aurora,” it called again. From the trees. Rory rose slowly. She did not move toward the sound. Her mother had never called her Aurora except when angry or frightened. The voice had been frightened. Rory’s grip tightened around the phone. The small crescent scar on her left wrist whitened beneath her fingers. “Don’t,” she said. The grove listened. A faint rustle came from the path behind the pool. Something stepped between the trees. Rory saw only a shoulder, perhaps. A pale sliver. It withdrew before her phone beam reached it. She backed away from the pool. The pendant tugged toward the path. “No.” Its warmth intensified. A pulse traveled through the chain and against her throat. The pool answered. A single ripple crossed its surface. Then another. Rory glanced at her phone. 12:18. Eight minutes had passed. She looked toward the boundary. It seemed farther away now. The standing stones had become small, uneven shapes at the edge of the clearing, though she could have sworn she had walked only a few dozen steps. From somewhere to her right came the sound of footsteps. Slow. Careful. They stopped when she stopped breathing. Rory forced herself to move. She kept the pool at her back and walked toward the stones, one measured step at a time. The flowers brushed her coat. Their petals were cold and damp. One caught on her sleeve. When she pulled free, it left a dark mark like ink. Behind her, the footsteps resumed. They were not quite footsteps. There was a pause between each one, as if whatever made them had to remember how walking worked. Rory did not turn around. The boundary remained distant. Her phone chimed. The sound shattered the clearing. She nearly dropped it. A notification filled the screen. MUM: Are you safe? Rory stared. The message had arrived without signal. The phone showed no bars. Beneath the text, the time read 12:19. She had not told her mother she was coming here. She had not spoken to her in four days. Another message appeared. MUM: Turn around, love. The footsteps stopped. Rory’s mouth went dry. The screen dimmed. Her own reflection surfaced in the black glass: bright blue eyes, straight black hair framing her face, skin gone pale beneath the phone’s cold light. Over her shoulder, reflected in the screen, stood a woman. Rory did not move. The woman was tall and thin, her face hidden by hanging hair. She wore a pale dress that dragged through the flowers. One hand hung at her side. The fingers were too long. Rory held her breath. In the reflection, the woman lifted her head. Rory dropped the phone and ran. The grove broke apart around her. Flowers whipped at her legs. Branches clawed her coat. Behind her, something gave a soft, delighted sigh. She did not look back. The stones grew larger. The park waited beyond them—or something wearing the shape of the park. Rory pushed harder, lungs burning, knife knocking against her ribs. The pendant blazed against her chest. She reached the boundary and slammed into one of the oak stones. Pain flashed through her shoulder. The stone was warm. Not sun-warm. Body-warm. Rory pressed both hands against it and shoved away, but the bark flexed beneath her palms. A slow throb moved through the wood. Behind her, the footsteps entered the flowers. She could hear breathing now. It came from very close to her left ear. “Aurora,” her mother whispered. Rory looked at the gap between the stones. Beyond it stood Richmond Park, moonlit and empty. The road lamps glowed faintly in the distance. A fox moved across the grass. Freedom. She reached for the gap. A hand closed around her wrist. The fingers were cold and impossibly narrow. Rory made a sound she did not recognize. She twisted, driving her elbow backward. It struck something soft. The grip tightened. The old crescent scar on her wrist burned. The pendant answered with a violent pulse. Red light flooded the grove. For one instant, the thing behind her appeared in the glow. It had her mother’s face. It had Rory’s eyes. And beneath its chin, where a throat should have been, a dark vertical seam opened like a second mouth. Rory slammed the Heartstone against the oak stone. The world screamed. Not the creature. The trees screamed, the flowers, the water, the sky. The sound punched through her bones. The hand vanished from her wrist. Rory stumbled through the boundary and fell hard onto the grass. Silence returned. She lay there, gasping, staring at the ordinary night. The mist had come back. Traffic whispered beyond the park. Her phone lay beside her, screen cracked but still lit. 12:26 a.m. She had been gone seventeen minutes. Rory pushed herself upright. The standing stones stood behind her, dark and motionless. No flowers grew near them. No path led between them. Just bare winter grass. Her wrist throbbed where the thing had held her. She looked down. Five pale marks circled the scar. Then, from inside the grove, her mother called once more. “Aurora.” The voice was no longer frightened. It was patient. Rory rose, snatched up her phone, and ran toward the lights without looking back.
created_at"2026-07-09T18:07:18.672Z" 7/9/2026, 6:07:18 PM
model"openai/gpt-5.6-luna-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency339
moderation_latency(null)
generation_time16104
tokens_prompt812
tokens_completion3060
native_tokens_prompt742
native_tokens_completion2378
native_tokens_completion_images0
native_tokens_reasoning0
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"completed"
service_tier"default"
usage0.01501
router(null)
provider_responses
0
endpoint_id"eebea444-34a5-4642-a766-cb319471d33a"
id"resp_051d6b6f5a84d6df016a4fe356c3248193822e48906aaab48d"
is_byokfalse
latency205
model_permaslug"openai/gpt-5.6-luna-20260709"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1783620438-Qsy9tz0EsfLQ55IYTs9S"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783620438-d5n2aT8Wr0r8BPOdrzKQ"
upstream_id"resp_051d6b6f5a84d6df016a4fe356c3248193822e48906aaab48d"
total_cost0.01501
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
57.14% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags7
adverbTagCount1
adverbTags
0"it called again [again]"
dialogueSentences10
tagDensity0.7
leniency1
rawRatio0.143
effectiveRatio0.143
89.25% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1860
totalAiIsmAdverbs4
found
0
adverb"very"
count2
1
adverb"perfectly"
count1
2
adverb"slowly"
count1
highlights
0"very"
1"perfectly"
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)
38.17% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1860
totalAiIsms23
found
0
word"pulse"
count3
1
word"warmth"
count3
2
word"silence"
count2
3
word"echo"
count1
4
word"pulsed"
count2
5
word"flickered"
count1
6
word"lilt"
count1
7
word"stomach"
count1
8
word"footsteps"
count5
9
word"measured"
count1
10
word"shattered"
count1
11
word"throb"
count1
12
word"throbbed"
count1
highlights
0"pulse"
1"warmth"
2"silence"
3"echo"
4"pulsed"
5"flickered"
6"lilt"
7"stomach"
8"footsteps"
9"measured"
10"shattered"
11"throb"
12"throbbed"
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
narrationSentences259
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount2
narrationSentences259
filterMatches(empty)
hedgeMatches
0"seemed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences263
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen30
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1857
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions6
unquotedAttributions0
matches(empty)
63.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions49
wordCount1839
uniqueNames12
maxNameDensity1.74
worstName"Rory"
maxWindowNameDensity3
worstWindowName"Rory"
discoveredNames
Richmond3
Park3
January1
Heartstone3
Yu-Fei1
Hel1
London1
Welsh1
Rory32
Aurora1
Are1
Turn1
persons
0"Heartstone"
1"Rory"
2"Turn"
places
0"Richmond"
1"Park"
2"January"
3"London"
globalScore0.63
windowScore0.667
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences127
glossingSentenceCount2
matches
0"looked like old trees arranged by acciden"
1"sounded like her mother"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.539
wordCount1857
matches
0"not physically, but with a subtle insistence"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences263
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs174
mean10.67
std10.99
cv1.03
sampleLengths
011
141
246
39
49
52
635
71
810
912
106
117
122
1315
1420
154
164
1711
1852
194
201
211
223
2363
2422
2527
264
2710
2847
292
304
3130
3213
336
349
356
366
375
386
3926
404
415
4243
4340
443
4512
467
476
485
4910
99.84% Passive voice overuse
Target: ≤2% passive sentences
passiveCount4
totalSentences259
matches
0"been worn"
1"been given"
2"been frightened"
3"been gone"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount1
totalVerbs321
matches
0"was coming"
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount3
semicolonCount0
flaggedSentences2
totalSentences263
ratio0.008
matches
0"The pendant warmed in her hand and pulled—not physically, but with a subtle insistence—toward the pool."
1"The park waited beyond them—or something wearing the shape of the park."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount272
adjectiveStacks0
stackExamples(empty)
adverbCount8
adverbRatio0.029411764705882353
lyAdverbCount2
lyAdverbRatio0.007352941176470588
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences263
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences263
mean7.06
std5.31
cv0.753
sampleLengths
011
124
25
34
48
519
66
721
89
99
102
1119
1211
135
141
155
163
172
1812
196
207
212
225
2310
243
254
2613
274
284
294
307
317
3218
3318
349
354
361
371
383
3914
4019
4130
4222
435
4422
454
4610
4725
486
4911
42.37% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats20
diversityRatio0.2480916030534351
totalSentences262
uniqueOpeners65
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount8
totalSentences231
matches
0"Then, somewhere among the trees,"
1"Then it had pulsed."
2"Then the pressure released."
3"Only a wall of dark"
4"Only stories, fragments, and the"
5"Then a voice said,"
6"Just bare winter grass."
7"Then, from inside the grove,"
ratio0.035
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount65
totalSentences231
matches
0"She crossed the last stretch"
1"It silvered the tips of"
2"Her fingers closed around the"
3"Its silver chain had tangled"
4"She worked it free, listening."
5"She waited, counting to ten."
6"She lowered the phone."
7"Her voice fell flat."
8"She had come because of"
9"It had burned hot enough"
10"She had delivered takeaway orders"
11"She had told herself that"
12"It pressed against her ribs"
13"They rose from the grass"
14"She walked toward them."
15"Their heads turned toward her."
16"She stopped with one boot"
17"She put her foot down."
18"Her phone screen flickered."
19"They grew over stones and"
ratio0.281
74.72% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount178
totalSentences231
matches
0"Rory knew Richmond Park well"
1"The trees gathered close."
2"The paths seemed to choose"
3"She crossed the last stretch"
4"Mist lay low over the"
5"It silvered the tips of"
6"Her fingers closed around the"
7"The Heartstone answered with a"
8"The deep-crimson stone rested against"
9"Its silver chain had tangled"
10"She worked it free, listening."
11"Rory turned her phone toward"
12"The beam caught trunks, mist,"
13"She waited, counting to ten."
14"The suggestion of one."
15"A darker interruption in the"
16"She lowered the phone."
17"Her voice fell flat."
18"The silence absorbed it without"
19"She had come because of"
ratio0.771
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences231
matches(empty)
ratio0
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences57
technicalSentenceCount3
matches
0"The deep-crimson stone rested against her palm, thumbnail-sized and smooth as if it had been worn there for centuries."
1"They grew over stones and roots, around a shallow pool at the clearing’s center, and along the narrow path that vanished between the trees opposite her."
2"Jennifer’s voice carried a warm Welsh lilt, a softness that could turn stern without warning."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags7
uselessAdditionCount0
matches(empty)
0.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags6
fancyCount2
fancyTags
0"she murmured (murmur)"
1"her mother whispered (whisper)"
dialogueSentences10
tagDensity0.6
leniency1
rawRatio0.333
effectiveRatio0.333
85.4829%