Run: 2026-10-08-01M4DA5ZQAKFYTBGXHACV9Q2SM

Run Details

Duration:
15.5s
Cost:
$0.001271
Provider:
Claude Platform on AWS

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 gate at the Sheen Gate end of Richmond Park was locked, but the padlock hung open, its shackle rusted to a thin orange thread. Rory noticed that and decided not to think about it. She had come this far on a cold instinct and a pendant that had not stopped humming against her breastbone for three nights. She pushed through the gate and let it swing shut behind her. The park was quieter than it should have been. London at eleven o'clock on a Tuesday in late October should have offered the usual hum of traffic along Roehampton Lane, a dog barking somewhere past the bracken, a jet sliding toward Heathrow with its red lights blinking. Instead she heard only her own boots on wet gravel and the faint tick of her breath. Even the wind had stopped, though the oaks still moved overhead, their upper branches shifting in a slow, silent sway. She slipped a hand into her coat pocket and found the chain. The silver was cool, but the stone beneath her fingers was warm, warm the way a mug of tea stays warm long after the kettle clicks off. Rory drew it out and looked at it. The Heartstone rested in her palm, deep crimson, its faint inner glow brightening and dimming like something breathing. "Right," she said quietly. Her voice came back flat, as if the air had swallowed half of it. "Right, then." The path curved north through a stand of old trees. Rory followed it because the pendant tugged her in that direction, a gentle pressure that felt less like a compass and more like a hand resting lightly between her shoulder blades. Her mind kept producing reasons she should turn around. She had a shift at the Golden Empress at seven tomorrow. Silas would be closing up the bar downstairs from her flat. Eva would have sent a dozen texts by now, each one shorter than the last. She had not told Eva where she was going. She had not told anyone. The path ended at a clearing she did not remember from her one childhood visit, if she had ever been here at all. Ringed by ancient oaks, their trunks split and furrowed like old leather, it held a circle of standing stones, grey and lichen-spotted, each one taller than she was. Between them, in the long grass, wildflowers bloomed. Purple vetch, white yarrow, buttercups the colour of egg yolk. In late October. The petals were fresh and dew-bright, and not one of them had been touched by frost. Rory crouched and touched a buttercup with her fingertip. The petal was cool and soft and perfectly real. She stood again, slowly. The Heartstone had gone hot against her palm. She could feel the pulse of it now, each beat a little faster than the last, and it was pointing, unmistakably, toward the centre of the stones. She checked her phone. The screen showed 11:14 PM, which was correct, but the signal bars had vanished, and beneath the time the date read the same day as an hour ago. Then, as she watched, the numbers flickered: 11:14, 11:14, 11:15, and then, for a single heartbeat, a date three days in the future. She locked the screen and shoved the phone back into her pocket. Something moved at the edge of her vision. She turned her head. Nothing. Only the oaks and the ring of grey stones and the patient flowers. She waited, counting her breaths, the way she had learned to count when Evan's footsteps had come up the stairs and she had needed to decide, very quickly, whether to stay still or run. The movement came again, to her left, between two trunks. It was not an animal. Animals had weight, a rhythm to their passage through undergrowth. This was like a shadow pulled sideways through the dark, too smooth, lingering a fraction too long in each place before it slid out of sight. "Hello?" she said. The word died in the clearing. Then she heard it. Very faint, somewhere beyond the stones, a sound like a child humming a tune she half remembered from nursery school. It rose and fell, rose and fell, and it kept almost perfect time with the pulse of the pendant in her hand. Rory's left wrist ached along the old crescent scar, the one she had got falling against a garden fence when she was seven. She pressed her thumb against it and made herself breathe. The humming stopped. In the silence that followed, she became aware of something else: a second set of footsteps, unhurried and light, circling the clearing just outside the ring of stones. She could not see who was walking. She could only hear them, pacing, matching her own position step for step, always just beyond the reach of the grass where the flowers grew. They were not in a hurry. They had all night. She looked down at the Heartstone. Its glow had brightened until it lit her fingers from within, and it was hot enough now to sting. The footsteps stopped directly behind her. Rory did not turn around. She understood, with a cold clarity that settled in her chest like a stone, that whatever stood behind her had been waiting for her to arrive, and that the thing she had come here to find had been looking for her too. Somewhere in the trees, a voice began to say her name, softly, in her mother's voice, and it did not sound like it was calling her home.
created_at"2026-10-08T08:30:52.146Z" 10/8/2026, 8:30:52 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency15472
moderation_latency(null)
generation_time15472
tokens_prompt792
tokens_completion1294
native_tokens_prompt1172
native_tokens_completion2307
native_tokens_completion_images(null)
native_tokens_reasoning627
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"
usage0.0012707
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791448252-mfvGmTtTPStFU30Lu15G"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791448252-sMbihD7AmLoSf8p7o9Bp"
upstream_id"msg_011CfpTW4D7i2Jye1PW9hT4V"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpTW4D7i2Jye1PW9hT4V"
is_byokfalse
latency1227
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0012707
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
0.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags2
adverbTagCount1
adverbTags
0"she said quietly [quietly]"
dialogueSentences3
tagDensity0.667
leniency1
rawRatio0.5
effectiveRatio0.5
62.33% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount929
totalAiIsmAdverbs7
found
0
adverb"lightly"
count1
1
adverb"perfectly"
count1
2
adverb"slowly"
count1
3
adverb"very"
count2
4
adverb"quickly"
count1
5
adverb"softly"
count1
highlights
0"lightly"
1"perfectly"
2"slowly"
3"very"
4"quickly"
5"softly"
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)
40.80% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount929
totalAiIsms11
found
0
word"furrowed"
count1
1
word"could feel"
count1
2
word"pulse"
count2
3
word"flickered"
count1
4
word"footsteps"
count3
5
word"weight"
count1
6
word"perfect"
count1
7
word"silence"
count1
highlights
0"furrowed"
1"could feel"
2"pulse"
3"flickered"
4"footsteps"
5"weight"
6"perfect"
7"silence"
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
narrationSentences65
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount1
narrationSentences65
filterMatches(empty)
hedgeMatches
0"began to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences66
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen42
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords929
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions3
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions24
wordCount925
uniqueNames15
maxNameDensity0.65
worstName"Rory"
maxWindowNameDensity1
worstWindowName"Eva"
discoveredNames
Sheen1
Gate1
Richmond1
Park1
Tuesday1
October2
Roehampton1
Lane1
Heathrow1
Heartstone3
Golden1
Empress1
Eva2
Evan1
Rory6
persons
0"October"
1"Heartstone"
2"Eva"
3"Evan"
4"Rory"
places
0"Sheen"
1"Gate"
2"Richmond"
3"Park"
4"Roehampton"
5"Lane"
6"Heathrow"
7"Golden"
globalScore1
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences52
glossingSentenceCount0
matches(empty)
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount929
matches(empty)
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences66
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs25
mean37.16
std27.06
cv0.728
sampleLengths
058
112
284
365
420
587
614
788
822
935
1067
118
1252
1351
143
156
1646
1733
183
1960
2010
2125
226
2347
2427
99.87% Passive voice overuse
Target: ≤2% passive sentences
passiveCount1
totalSentences65
matches
0"been touched"
18.59% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount4
totalVerbs147
matches
0"was going"
1"was pointing"
2"was walking"
3"was calling"
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount0
semicolonCount0
flaggedSentences0
totalSentences66
ratio0
matches(empty)
95.36% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount927
adjectiveStacks0
stackExamples(empty)
adverbCount42
adverbRatio0.045307443365695796
lyAdverbCount11
lyAdverbRatio0.011866235167206042
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences66
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences66
mean14.08
std9.74
cv0.692
sampleLengths
025
110
223
312
49
538
617
720
812
927
108
1118
124
1314
142
1510
1631
179
1811
1911
2015
219
225
2323
2428
258
2610
273
2816
299
309
314
328
3327
344
3528
3623
3712
388
394
401
4113
4234
4310
445
4510
4626
473
486
494
58.08% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats5
diversityRatio0.3939393939393939
totalSentences66
uniqueOpeners26
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount7
totalSentences63
matches
0"Instead she heard only her"
1"Even the wind had stopped,"
2"Then, as she watched, the"
3"Only the oaks and the"
4"Then she heard it."
5"Very faint, somewhere beyond the"
6"Somewhere in the trees, a"
ratio0.111
61.27% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount25
totalSentences63
matches
0"She had come this far"
1"She pushed through the gate"
2"She slipped a hand into"
3"she said quietly"
4"Her voice came back flat,"
5"Her mind kept producing reasons"
6"She had a shift at"
7"She had not told Eva"
8"She had not told anyone."
9"She stood again, slowly."
10"She could feel the pulse"
11"She checked her phone."
12"She locked the screen and"
13"She turned her head."
14"She waited, counting her breaths,"
15"It was not an animal."
16"It rose and fell, rose"
17"She pressed her thumb against"
18"She could not see who"
19"She could only hear them,"
ratio0.397
55.24% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount51
totalSentences63
matches
0"The gate at the Sheen"
1"Rory noticed that and decided"
2"She had come this far"
3"She pushed through the gate"
4"The park was quieter than"
5"London at eleven o'clock on"
6"She slipped a hand into"
7"The silver was cool, but"
8"Rory drew it out and"
9"The Heartstone rested in her"
10"she said quietly"
11"Her voice came back flat,"
12"The path curved north through"
13"Rory followed it because the"
14"Her mind kept producing reasons"
15"She had a shift at"
16"Silas would be closing up"
17"Eva would have sent a"
18"She had not told Eva"
19"She had not told anyone."
ratio0.81
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences63
matches(empty)
ratio0
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences38
technicalSentenceCount2
matches
0"She had come this far on a cold instinct and a pendant that had not stopped humming against her breastbone for three nights."
1"In the silence that followed, she became aware of something else: a second set of footsteps, unhurried and light, circling the clearing just outside the ring of…"
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags2
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags2
fancyCount0
fancyTags(empty)
dialogueSentences3
tagDensity0.667
leniency1
rawRatio0
effectiveRatio0
83.0509%