Run: 2026-02-17-01KHMQE6P8E0669SSCKPY8M5SD

Run Details

Duration:
19.9s
Cost:
$0.008523
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
Aurora stood at the boundary of the Fae Grove just after midnight, her trainers sinking slightly into the damp grass. The ancient oak standing stones loomed before her like sentries, their gnarled trunks black against the starless sky. She'd told herself coming here alone was necessary. Rational. A solo reconnaissance mission to understand what the Heartstone pendant was responding to. That reasoning felt increasingly stupid with each passing second. The pendant hung beneath her shirt, a warm weight against her sternum. It had been pulsing all evening—a steady, insistent warmth that had driven her from her flat above Silas' bar, through the midnight streets toward Richmond Park, and now to this precise spot where the world felt thin and negotiable. The wildflowers that should bloom year-round in this place were absent tonight. Instead, the clearing beyond the oak stones was dark and overgrown, as though winter had somehow seized this pocket realm by the throat. She pulled out her phone. No signal, naturally. She hadn't expected one, but the loss of it felt like severing a rope. She switched on her torch—a small LED lantern from the delivery job—and stepped between the standing stones. The air changed immediately. It was colder, yes, but it was more than that. The quality of the atmosphere itself seemed different, thicker somehow, pressing against her skin like warm oil. Aurora's breath came visible in small clouds. Her instinct was to turn back, to respect the wrongness her body was registering. But something in her—that same out-of-the-box thinking that had gotten her through a law degree she didn't want and a relationship she should have ended sooner—pushed her forward. The grove proper opened before her. The wildflowers were there after all, she realized, but they were wrong. Their petals were too dark, the whites tinged with grey, the colors muted as though seen through dirty glass. They didn't move in the breeze. There was no breeze. The air was perfectly, unnaturally still. Aurora moved deeper in, her torch beam cutting a narrow path through the darkness. The pendant's warmth had increased, a steady pulse like a second heartbeat. It wasn't unpleasant exactly, but it was insistent in a way that made her jaw clench. This place had always felt alive to her on her previous visits—vibrant, strange, but alive. Tonight it felt hollowed out, like a photograph of itself. A sound stopped her. A branch breaking, somewhere to her left. She turned, scanning the torch across the underbrush. Nothing. Just tangled growth and more of those pallid flowers. Her heart rate had ticked up. Stupid. Wind could have broken the branch. Or an animal. Richmond Park had deer, didn't it? She'd never actually checked if deer could exist in a place where time moved differently, where reality bent around the edges. The breaking sound came again, but this time from her right. And again, from behind. Aurora spun, her torch beam wheeling. The clearing seemed to shift around the light, pulling darker where the beam didn't reach, as though something was actively hiding from illumination. "Right then," she said aloud, hearing the tremor in her own voice. "Not actually trying the chatty approach. Got it." The silence that followed her words was absolute. Even the distant sounds of Richmond Park—the ambient hum of the city beyond, the occasional car on distant roads—had vanished. It was as though she'd stepped into a vacuum. She kept moving, deeper into the grove, because turning back felt like the wrong choice somehow. The pendant was burning now, not painfully, but with an urgency that overrode her growing dread. This was why she'd come. To understand what it wanted, what it was warning her about. The Heartstone was attuned to Hel portals according to what little she'd managed to piece together. And if it was reacting this strongly, that meant— The ground beneath her foot gave way. It was barely a dip, just enough to break her stride, but it was enough to send ice down her spine. She caught herself with her hands, went to one knee. The earth here was wrong too—too soft, almost damp though there was no moisture on it, and warm in a way that had nothing to do with weather. Her hand had pressed down on something that felt almost like hide. Aurora yanked her hand back and stood, torch shaking slightly in her grip. When she pointed it down, there was nothing—just the same pale flowers and dark earth. But the impression remained. She'd touched something. She was no longer alone in this clearing. That certainty came not from any evidence but from the primal part of her brain that had kept her ancestors alive. She could feel attention like weight, pressing down from multiple directions. Her heart was hammering against her ribs now. "If you're here," she called out, her voice stronger than she felt, "state your business. I'm not here to hurt anyone. I'm just—" The sound came again, but this time it wasn't a branch. It was a breath. Long and slow and absolutely deliberate. It came from above. Aurora looked up. The canopy of the grove was so thick she couldn't see sky, but something moved through it—a displacement of air that sent the twisted branches creaking. Whatever it was, it was massive. It moved with the fluid grace of something that had learned how to navigate the spaces between worlds. The pendant was screaming now, burning against her chest with an intensity that made her gasp. Not warning, she realized. Not anymore. Summoning. It was calling to whatever circled above her. She made a choice in that moment that she would later question repeatedly. She pulled the pendant from beneath her shirt, letting it swing freely, its silver chain catching the torchlight. The deep crimson stone pulsed like a living heart. The circling above stopped. The attention that had been pressing down on her from all directions snapped toward the pendant like iron to magnet. The clearing seemed to hold its breath. When the voice came, it didn't come from above. It came from everywhere at once—from the flowers at her feet and the twisted branches above her head and the very ground beneath her trainers. It was not a human voice. It was something like wind through a canyon, like the sound of stone being dragged across stone, like a frequency that shouldn't have been audible but was, resonating in her bones. "Malphora," it said, and the name wasn't hers but was hers, echoing with a recognition that made her vision swim. "You've brought us an invitation." The torch fell from her trembling fingers and extinguished on the soft earth. In the dark, Aurora heard movement. Felt it. Whatever had been circling descended. And the Fae Grove, where time moved differently, seemed to hold its breath and wait to see what would happen next.
created_at"2026-02-17T02:39:20.09873+00:00" 2/17/2026, 2:39:20 AM
model"anthropic/claude-4.5-haiku-20251001"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency425
moderation_latency(null)
generation_time19242
tokens_prompt812
tokens_completion1756
native_tokens_prompt838
native_tokens_completion1537
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"
usage0.008523
router(null)
provider_responses
0
id"msg_01VM85BwPggB9qCVnry68BDr"
status200
is_byokfalse
latency425
endpoint_id"41d2915a-92e6-4993-b537-210b4e10cba8"
provider_name"Anthropic"
model_permaslug"anthropic/claude-4.5-haiku-20251001"
api_type"completions"
id"gen-1771295939-UMpGMBiMpF4aQX7kV7Iw"
upstream_id"msg_01VM85BwPggB9qCVnry68BDr"
total_cost0.008523
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags3
adverbTagCount0
adverbTags(empty)
65.5172% AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount1160
totalAiIsmAdverbs4
found
0
adverb"perfectly"
count1
1
adverb"slightly"
count2
2
adverb"very"
count1
highlights
0"perfectly"
1"slightly"
2"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)
48.2759% AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount1160
totalAiIsms6
found
0
word"tinged"
count1
1
word"loomed"
count1
2
word"weight"
count2
3
word"echoing"
count1
4
word"navigate"
count1
highlights
0"tinged"
1"loomed"
2"weight"
3"echoing"
4"navigate"
100.0000% Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches0
maxInWindow0
found(empty)
highlights(empty)
100.0000% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences99
matches(empty)
100.0000% Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount0
hedgeCount4
narrationSentences99
filterMatches(empty)
hedgeMatches
0"seemed to"
1"managed to"
100.0000% Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount0
totalSentences101
matches(empty)
100.0000% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs28
mean40.96
std23.16
cv0.565
sampleLengths
060
19
286
339
480
553
667
711
861
915
1049
1137
1273
137
1471
1535
1648
1723
1825
1953
2031
2140
2231
2371
2425
2513
2613
2721
100.0000% Passive voice overuse
Target: ≤5% passive sentences
passiveCount2
totalSentences99
matches
0"was attuned"
1"being dragged"
100.0000% Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount9
totalVerbs195
matches
0"was responding"
1"was registering"
2"was burning"
3"was warning"
4"was reacting"
5"was hammering"
6"was screaming"
7"was calling"
8"was, resonating"
94.7345% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1130
adjectiveStacks0
stackExamples(empty)
adverbCount52
adverbRatio0.04601769911504425
lyAdverbCount18
lyAdverbRatio0.01592920353982301
100.0000% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences101
echoCount0
echoWords(empty)
100.0000% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences101
mean11.36
std7.48
cv0.658
sampleLengths
020
118
28
31
413
59
612
739
812
923
105
113
1214
1317
144
1510
1617
177
1814
1928
206
2112
2219
236
244
256
2614
2712
2816
2915
3010
314
327
338
341
359
366
371
386
393
406
4121
4211
434
446
4523
4612
478
488
4920
48.5149% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats11
diversityRatio0.3564356435643564
totalSentences101
uniqueOpeners36
0.0000% Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags3
fancyCount3
fancyTags
0"she said aloud, hearing the tremor in her own voice (say hear)"
1"she called out, her voice stronger than she felt (call out, feel)"
2"it said, and the name wasn't hers but was hers, echoing with a recognition that made her vision swim (say, does be not be echo make swim)"
85.7084%