Run: 2026-09-23-01M37PD165A50RX66PTTCJKFJ0

Run Details

Duration:
51.2s
Cost:
$0.066468
Provider:
Claude Platform on AWS

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 last bus had dropped her at Roehampton Gate a little after eleven, and the park had been locked for hours. Rory went over the railings where the hawthorn grew thin, snagged her jacket on a spike, and landed in wet grass that soaked straight through her trainers. She still smelled of the Golden Empress: chilli oil, star anise, the sweet rot of the bins out back. Yu-Fei had let her go early without asking why. Her phone buzzed against her hip. "Tell me you're not in there." "I'm not in there, Eva." "You're in there. I can hear you breathing like a pug. Rory, it's a royal park. There are *deer*. They've got antlers and opinions." "Isolde asked for me. Midnight, at the stones. She wouldn't have written if it wasn't important." "She didn't write. A leaf turned up on your windowsill with words burned into it. That isn't a letter, that's a craft project from a serial killer." Rory laughed, and the sound went out across the grass and did not come back. No echo. The field swallowed it whole. "Stay on the line till I get there?" "Obviously. And if you die I'm telling your mum it was your idea." The track curved towards the plantation, and the lights of Kingston sank behind the ridge until there was nothing but a smear of orange cloud and the black comb of trees. Bracken stood waist-high on either side, rust-brown and brittle, and it hissed against her jeans with every step. Somewhere off to the left a stag coughed, that hoarse bark they made in October, a sound like a man clearing a throat full of gravel. "Was that you?" "Deer." "Christ. Right. Keep talking so I know you're alive." "Tell me about your shift." Eva launched into something about a customer who'd returned a candle because it smelled *too much like candle*, and Rory let the voice carry her forward. The pendant lay cold against her breastbone under her jumper. She'd stopped noticing it most days. Tonight she kept touching it through the wool, the way you'd press a bruise. The stag coughed again. Same pitch. Same rasp. Same two-beat pause and a third, shorter bark. She slowed. It came a third time, from the right now, and it was the identical sound, as though someone had recorded it and was playing it back from a different speaker. "—and I said, madam, that's the *product*—Rory? You've gone quiet." "Nothing. Go on." The oak stones rose out of the dark ahead, and the phone crackled in her ear. They weren't stones at all, not really. Seven trunks, petrified or near enough, grey as old teeth and ringed in a loose circle on a slight rise. She'd been here twice in daylight with Isolde, and both times the air inside the ring had tasted of honey and cut grass. Now it tasted of nothing. She stopped at the edge where the bracken gave way to short turf and wildflowers, the ones that bloomed through January frosts, the ones Isolde said were older than the city. They were all closed. Every bloom furled tight like a fist. "Eva, I'm at the stones." A burst of static. Then Eva's voice, slowed and thickened. "—*ory*—can't—*where*—" "Eva?" The line went dead. Three bars of signal became none. She checked the time out of habit. 11:58. She stepped over the boundary. The cold hit first, a clean, deep cold like opening a chest freezer, and then the quiet. Not the quiet of the park, which had wind in it and the far drone of the A3. This had no floor to it. Her own heartbeat seemed loud enough to carry. "Isolde? It's Rory." No answer. She walked to the centre, where a flat slab of root-tangled earth marked the place Isolde liked to sit. The grass there was flattened in a shape. Longer than a person. Narrow. The blades hadn't sprung back, and when she crouched to touch them they were warm. Behind her, a single flower opened. She heard it. A soft wet unpeeling, like a lip parting from teeth. She turned. One white bloom stood open among the closed ones, near the stone at her back, its face tilted towards her. The others stayed shut. She stood. Another opened, a yard to the left of the first. Then a third. Each one faced the middle of the circle, faced her, and each opened only when her eyes were somewhere else. "Right," she said to nobody. "Fine. That's fine." She pulled the leaf from her pocket. The burned letters had been clear on her windowsill. *Midnight. The stones. Come alone, Aurora.* Under her phone torch they'd gone brown and smeared, and there was a fourth line she hadn't seen before, finer than the rest, scorched so lightly it looked like a vein. *Thank you for coming.* Isolde didn't thank people. The pendant was warm. Not warm from her skin. Warm from inside, a slow flush spreading out from the stone through the wool until she felt it on her collarbone like a thumb pressed there. She fished it out by the chain. The crimson glow, usually so faint she had to cup her hands to see it, lit her knuckles pink. Somewhere past the far stone, a footstep. Leaves crunching under weight. She held her breath. Nothing followed. She took a step towards the gap between two trunks, and on the far side something took a step as well, a half-second behind hers, the way a bad echo lags. She stopped. It stopped, one crunch late. She lifted her foot and set it down, heel first, deliberate. Crunch. Crunch. "I can hear you." Her voice came out steadier than she'd expected. "If you're one of Isolde's, you can come in. If you're not, you can bugger off." A blackbird sang. At night. In October. A full liquid run of notes, bright as a May morning, from the dark branches overhead where there should have been no bird at all. It sang the phrase once, then again, and on the third repetition the phrasing changed, stretched, dropped lower, until it was no longer birdsong but something shaped like the rhythm of speech. Four syllables. Rising at the end, like a question. She knew those syllables. Her mother used to call them up the stairs in Cardiff. *Au-ro-ra, love?* She did not look up. Movement at the corner of her left eye, pale, low to the ground, gone when she turned. It had been between the stones, she was sure. Where the bracken met the turf. Now there was only bracken, standing still, every frond unmoving, though a moment before the breeze had been working through it in slow ripples. No breeze now. Not a stir. She checked her phone again because her hand wanted something to do. 11:58. The flowers had all opened. Every one. A ring of white faces inside the ring of grey trunks, and she couldn't remember hearing the last of them go. The pendant throbbed now, a steady pulse she could feel in her teeth, and the flattened shape in the grass beside her was bigger than it had been. Wider at one end. She hadn't watched it happen. "Isolde." Louder. "If this is a test, I've passed it. I'm terrified. Well done." From just outside the circle, behind the stone at her back, close enough that she felt the warmth of breath across the nape of her neck, a voice answered her in Eva's exact tone, down to the little catch Eva got when she was about to laugh. "Keep talking so I know you're alive." Rory's hand closed around the pendant, so hot now it stung her palm, and she didn't turn around.
created_at"2026-09-23T17:53:17.599Z" 9/23/2026, 5:53:17 PM
model"anthropic/claude-opus-5.5-20260921"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency5334
moderation_latency(null)
generation_time51122
tokens_prompt1008
tokens_completion2097
native_tokens_prompt1482
native_tokens_completion3027
native_tokens_completion_images(null)
native_tokens_reasoning518
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"
usage0.066468
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790185997-mZdDyDd7tVf5NTjVSwxI"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790185997-3U2j6FftnfPmXtuU2yey"
upstream_id"msg_011CfLoFrUzq2ySMjMR47wKA"
provider_responses
0
endpoint_id"3a2388bc-3740-4e64-a1f5-4e301726b6b9"
id"msg_011CfLoFrUzq2ySMjMR47wKA"
is_byokfalse
latency1452
model_permaslug"anthropic/claude-opus-5.5-20260921"
provider_name"Claude Platform on AWS"
status200
total_cost0.066468
cache_discount(null)
upstream_inference_cost0
provider_name"Claude Platform on AWS"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags3
adverbTagCount0
adverbTags(empty)
dialogueSentences24
tagDensity0.125
leniency0.25
rawRatio0
effectiveRatio0
92.28% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1295
totalAiIsmAdverbs2
found
0
adverb"really"
count1
1
adverb"lightly"
count1
highlights
0"really"
1"lightly"
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)
72.97% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1295
totalAiIsms7
found
0
word"echo"
count2
1
word"weight"
count1
2
word"throbbed"
count1
3
word"pulse"
count1
4
word"could feel"
count1
5
word"warmth"
count1
highlights
0"echo"
1"weight"
2"throbbed"
3"pulse"
4"could feel"
5"warmth"
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
narrationSentences109
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount0
narrationSentences109
filterMatches(empty)
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences129
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen47
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans8
markdownWords20
totalWords1294
ratio0.015
matches
0"deer"
1"too much like candle"
2"product"
3"ory"
4"where"
5"Midnight. The stones. Come alone, Aurora."
6"Thank you for coming."
7"Au-ro-ra, love?"
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions9
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions23
wordCount1119
uniqueNames12
maxNameDensity0.45
worstName"Rory"
maxWindowNameDensity1.5
worstWindowName"Rory"
discoveredNames
Roehampton1
Gate1
Golden1
Empress1
Kingston1
October2
Rory5
Isolde4
January1
Eva4
May1
Cardiff1
persons
0"Rory"
1"Isolde"
2"January"
3"Eva"
places
0"Roehampton"
1"Kingston"
2"October"
3"Cardiff"
globalScore1
windowScore1
66.67% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences60
glossingSentenceCount2
matches
0"seemed loud enough to carry"
1"looked like a vein"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.773
wordCount1294
matches
0"no longer birdsong but"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences129
matches
0"coughed, that hoarse"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs62
mean20.87
std22.8
cv1.092
sampleLengths
076
16
26
35
424
516
627
722
88
913
1075
113
121
139
145
1556
164
1744
1810
193
2016
2186
2211
235
2410
251
261
2717
281
295
3049
313
3249
336
3439
3535
368
3753
384
394
404
4157
427
4341
447
4511
462
4728
483
4970
95.61% Passive voice overuse
Target: ≤2% passive sentences
passiveCount3
totalSentences109
matches
0"been locked"
1"was flattened"
2"been between"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount1
totalVerbs178
matches
0"was playing"
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount2
semicolonCount0
flaggedSentences1
totalSentences129
ratio0.008
matches
0"\"—and I said, madam, that's the *product*—Rory? You've gone quiet.\""
94.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount334
adjectiveStacks1
stackExamples
0"lay cold against her"
adverbCount4
adverbRatio0.011976047904191617
lyAdverbCount1
lyAdverbRatio0.0029940119760479044
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences129
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences129
mean10.03
std9.26
cv0.923
sampleLengths
021
127
219
39
46
56
65
724
816
927
1015
112
125
138
1413
1531
1618
1726
183
191
209
215
2226
2310
246
2514
264
272
282
298
302
3130
3210
333
3416
357
3620
3723
385
3931
404
417
425
434
446
451
461
474
486
497
72.18% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats5
diversityRatio0.4566929133858268
totalSentences127
uniqueOpeners58
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount4
totalSentences87
matches
0"Somewhere off to the left"
1"Then Eva's voice, slowed and"
2"Then a third."
3"Somewhere past the far stone,"
ratio0.046
91.26% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount28
totalSentences87
matches
0"She still smelled of the"
1"Her phone buzzed against her"
2"She'd stopped noticing it most"
3"It came a third time,"
4"They weren't stones at all,"
5"She'd been here twice in"
6"She stopped at the edge"
7"They were all closed."
8"She checked the time out"
9"She stepped over the boundary."
10"Her own heartbeat seemed loud"
11"She walked to the centre,"
12"She heard it."
13"she said to nobody"
14"She pulled the leaf from"
15"She fished it out by"
16"She held her breath."
17"She took a step towards"
18"It stopped, one crunch late."
19"She lifted her foot and"
ratio0.322
97.93% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount63
totalSentences87
matches
0"The last bus had dropped"
1"Rory went over the railings"
2"She still smelled of the"
3"Yu-Fei had let her go"
4"Her phone buzzed against her"
5"Rory laughed, and the sound"
6"The field swallowed it whole."
7"The track curved towards the"
8"Eva launched into something about"
9"The pendant lay cold against"
10"She'd stopped noticing it most"
11"Tonight she kept touching it"
12"The stag coughed again."
13"It came a third time,"
14"\"—and I said, madam, that's"
15"The oak stones rose out"
16"They weren't stones at all,"
17"She'd been here twice in"
18"She stopped at the edge"
19"They were all closed."
ratio0.724
100.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount2
totalSentences87
matches
0"Now it tasted of nothing."
1"Now there was only bracken,"
ratio0.023
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences39
technicalSentenceCount1
matches
0"It came a third time, from the right now, and it was the identical sound, as though someone had recorded it and was playing it back from a different speaker."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags3
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags2
fancyCount0
fancyTags(empty)
dialogueSentences24
tagDensity0.083
leniency0.167
rawRatio0
effectiveRatio0
96.0966%