Run: 2026-02-17-01KHMQSPPMV7RZZZSKWRE6EJY8

Run Details

Duration:
55.3s
Cost:
$0.056515
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 last light bled from the sky as Aurora pushed through the undergrowth at the edge of Richmond Park. She'd waited until the rangers made their final rounds, watched the last dog-walker disappear toward the car park, and still she'd given it another twenty minutes before slipping past the gate. The pendant lay warm against her sternum, warmer than it should be, and that warmth had led her here three nights running. Tonight she'd finally worked up the nerve to follow it all the way. The ancient oaks rose around her like sentinels, their bark ridged and dark in the fading light. She knew these trees marked something—Silas had told her stories, late nights when the bar was empty and he'd had enough whiskey to loosen his tongue. Standing stones, he'd called them, though they'd never been stone at all. The oaks had simply grown into that purpose, roots drinking deep from soil that touched more than one world. Aurora found the gap between two of the largest trees and stepped through. The air changed immediately. It pressed against her skin like something alive, neither warm nor cold but present in a way air had no right to be. The clearing beyond stretched wider than it should have, given the density of the woods she'd just left. Wildflowers carpeted the ground in defiance of November, their petals pale and luminous in the darkness. No moon yet, but she could see them clearly. That should have been her first warning. She'd come because the pendant had been pulling her here for weeks. Because something had left it for her, and she needed to know what. Because the dreams had started—dreams of crimson light and a voice that spoke in languages she didn't know but somehow understood. The Heartstone pulsed against her chest, its rhythm quickening, and she pressed her palm flat against it through her jacket. "I'm here," she said quietly. Her voice fell flat, swallowed by the silence. Nothing answered. Aurora moved deeper into the grove, her boots soundless on the soft earth. The flowers bent away from her footsteps as if anticipating her path. Behind her, something rustled. She turned, too quickly, and saw only the pale blooms swaying in a breeze she couldn't feel. The wrongness crept in slowly. It started with the birds. Or rather, with their absence. Richmond Park was never truly silent—even at night, something always stirred. Owls. Foxes barking in the distance. The eternal background hum of London, that great machine breathing at the edge of every green space. Here there was nothing. The silence had weight, had texture. It pressed against her eardrums like deep water. Aurora's hand found the small crescent scar on her left wrist, a habit she'd never been able to break. She rubbed her thumb across the raised tissue, grounding herself. The childhood accident that had given her that mark seemed very far away now, a memory belonging to some other girl who had never stood in a clearing where the rules of the world grew thin. Something moved at the edge of her vision. She didn't turn this time. Didn't give it the satisfaction of her attention. Instead, she watched from the corner of her eye as a shape drifted between two oaks at the clearing's edge. Tall. Thin. Wrong in proportions she couldn't quite name. It was there for a heartbeat, and then the shadows swallowed it. The pendant flared hot against her skin. "I know you're there." Her voice came out steadier than she felt. "I'm not afraid of you." The lie hung in the air between them—her and whatever shared this space with her now. Aurora was afraid. She'd been afraid since Evan, since the night she'd finally run, since she'd learned what it meant to share a room with something that wanted to hurt her. But fear had never stopped her before. Fear was just another form of information. The wildflowers nearest to her left began to wilt. Not slowly, not the natural death of cut stems in a vase. They blackened from the center outward, petals curling like burning paper, and the decay spread in a widening circle that stopped precisely three feet from where she stood. Aurora held her ground. "The pendant." The voice came from everywhere and nowhere, a sound like wind through dead leaves, like ice cracking on a winter pond. "You wear what was not given." "It was left for me. That's close enough to given." Silence. The dead flowers at the circle's edge crumbled to ash. "You do not know what you carry." The voice had direction now, coming from behind her. "You do not know what door you hold the key to." Aurora turned slowly. Nothing stood there but shadow, pooled thick between the oaks like something liquid. But the shadow had shape. Had depth. Had, she realized with a cold shock, eyes. They weren't eyes in any human sense. Two points of absolute darkness in a darkness that somehow seemed lighter by comparison. They watched her with an intelligence she could feel like pressure against her thoughts, probing, curious, hungry. "Then tell me," she said. "That's why I'm here. To understand." The shadow laughed. The sound scraped against her bones. "You came because the stone called you. You came because the blood in your veins remembers what your mind has forgotten." The darkness shifted, and for a moment she saw the suggestion of a form within it—limbs too long, joints that bent at angles that made her stomach lurch. "You came because you have no choice. You have never had a choice." The temperature dropped. Aurora's breath misted in front of her face, and frost began to creep across the wildflowers, following the path the decay had carved. The pendant burned now, hot enough to hurt, and she pressed her hand against it reflexively. "Whatever you think I am," she said, "you're wrong." "Am I?" The shadow drew closer. She could feel it now, a cold that went beyond temperature, a wrongness that prickled along every nerve. "Tell me, Aurora Carter, what do you see when you close your eyes? What whispers in the space between sleeping and waking? What name do you speak in dreams that vanishes like smoke when you wake?" She didn't answer. Couldn't answer. Because the truth was she did dream of a name, a word that felt like a wound in her mouth, and every morning it slipped away before she could grasp it. "You wear the Heartstone," the shadow continued, "and you do not even know whose heart it was cut from. You walk between worlds and call yourself human. You fled one cage only to stumble into another, and still you do not see the bars." "I see you." Aurora's voice cracked, but she didn't look away from those terrible eyes. "I see you just fine." Something changed in the darkness. The shadows drew back, just slightly, and she caught a glimpse of what hid within them—pale skin that seemed to absorb light rather than reflect it, a face that was almost human except for the proportions, the angles, the smile that held too many teeth. "Perhaps you do," it said. "Perhaps that is why the stone chose you." "The stone didn't choose anything. Someone left it for me." "Yes." The figure leaned closer, and she smelled something ancient, something that made her think of deep caves and older bones. "But who left it? And why do you think they knew where you would be, Aurora Carter? Why do you think they knew you would run to London, would work for the woman with the red door, would sleep above the bar where the old man keeps his secrets?" The questions hit her like physical blows. She'd never thought—never let herself think—about the pendant's appearance. It had simply been there one morning, in the flat, sitting on her pillow like something she'd always owned. She'd assumed it was Eva's, borrowed and forgotten. When Eva denied it, she'd assumed she'd bought it herself during one of those blackout nights after she'd first arrived, when the drinks had been free and the grief had been bottomless. But she hadn't. She knew that now with a certainty that settled in her stomach like a stone. "What do you want?" she asked. The shadow smiled. Behind her, she heard something moving—not footsteps exactly, but the suggestion of movement, the whisper of something large displacing air. The pendant screamed against her skin, and she realized with horror that it wasn't warning her of danger. It was calling to something. "I want nothing," the figure said. "I merely observe. The question, Aurora Carter, is what do you want? What did you want badly enough to step through the oak-gates into the space between? What were you hoping to find in the grove where time runs sideways and the veil wears thin?" The movement behind her grew closer. She could feel breath on her neck now—breath that stank of copper and rot, breath that came in stuttering rhythms that matched the pounding of her heart. "Answers," she said, and her voice was barely a whisper. "Then turn around." The shadow's smile widened. "Turn around and see what answers have found you." Aurora closed her eyes. The scar on her wrist throbbed with her pulse. The pendant burned like a brand. She turned.
created_at"2026-02-17T02:46:11.89437+00:00" 2/17/2026, 2:46:11 AM
model"anthropic/claude-4.5-opus-20251124"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1523
moderation_latency(null)
generation_time55249
tokens_prompt812
tokens_completion2343
native_tokens_prompt838
native_tokens_completion2093
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"
usage0.056515
router(null)
provider_responses
0
id"msg_019cRKfWfELTuACM8RG1ynoQ"
status200
is_byokfalse
latency1523
endpoint_id"be883404-eb42-4b2d-b6e4-c7daa3aa8d62"
provider_name"Anthropic"
model_permaslug"anthropic/claude-4.5-opus-20251124"
api_type"completions"
id"gen-1771296316-dTD3ytxkuf1EB1GoMgXl"
upstream_id"msg_019cRKfWfELTuACM8RG1ynoQ"
total_cost0.056515
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"

Evaluation details

Result Evaluator Details Meta Data
50.0000% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags8
adverbTagCount2
adverbTags
0"she said quietly [quietly]"
1"she said, and her voice was barely a whisper [barely]"
49.3029% AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount1578
totalAiIsmAdverbs8
found
0
adverb"precisely"
count1
1
adverb"quickly"
count1
2
adverb"slightly"
count1
3
adverb"slowly"
count3
4
adverb"truly"
count1
5
adverb"very"
count1
highlights
0"precisely"
1"quickly"
2"slightly"
3"slowly"
4"truly"
5"very"
100.0000% AI-ism character names
Target: 0 AI-default names (17 tracked, −20% each)
codexExemptions(empty)
found(empty)
100.0000% AI-ism location names
Target: 0 AI-default location names (33 tracked, −20% each)
codexExemptions(empty)
found(empty)
55.6401% AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount1578
totalAiIsms7
found
0
word"luminous"
count1
1
word"sentinels"
count1
2
word"lurch"
count1
3
word"throbbed"
count1
4
word"weight"
count1
5
word"footsteps"
count2
highlights
0"luminous"
1"sentinels"
2"lurch"
3"throbbed"
4"weight"
5"footsteps"
100.0000% Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches1
maxInWindow1
found
0
label"hung in the air"
count1
highlights
0"hung in the air"
100.0000% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells1
narrationSentences110
matches
0"was afraid"
100.0000% Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount2
hedgeCount4
narrationSentences110
filterMatches
0"think"
hedgeMatches
0"appear to"
1"began to"
2"seemed to"
100.0000% Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount0
totalSentences123
matches(empty)
100.0000% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs49
mean31.96
std23.97
cv0.75
sampleLengths
072
113
274
313
477
566
613
72
846
95
1062
1165
128
1354
147
1517
1661
1749
184
1929
2010
2111
2227
2331
2438
2511
269
2762
2842
299
3060
3136
3244
3320
3450
3513
3610
3770
3875
3918
406
4141
425
4351
4433
4510
4616
4719
482
100.0000% Passive voice overuse
Target: ≤5% passive sentences
passiveCount0
totalSentences110
matches(empty)
100.0000% Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount2
totalVerbs213
matches
0"wasn't warning"
1"was calling"
94.0000% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1257
adjectiveStacks1
stackExamples
0"lay warm against her"
adverbCount50
adverbRatio0.03977724741447892
lyAdverbCount18
lyAdverbRatio0.014319809069212411
100.0000% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences123
echoCount0
echoWords(empty)
100.0000% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences123
mean12.73
std10.48
cv0.823
sampleLengths
019
131
222
313
417
526
612
719
813
94
1023
1118
1216
139
147
1512
1613
1721
1820
195
208
212
2213
2312
244
2517
265
275
285
2911
301
315
3217
334
346
358
3619
3710
3836
398
405
418
4220
431
441
457
4612
477
4812
495
51.4905% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats10
diversityRatio0.35772357723577236
totalSentences123
uniqueOpeners44
81.2500% Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags8
fancyCount3
fancyTags
0"she said quietly (say quietly)"
1"the shadow continued (continue)"
2"she said, and her voice was barely a whisper (say, be barely)"
87.1579%