Run: 2026-02-19-01KHV72HMV07F1MHEEDS7XJSDM

Run Details

Duration:
39.2s
Cost:
$0.023406
Provider:
Anthropic

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
Richmond Park at night belonged to a different world. Rory had known that before she came. She'd told herself it didn't matter, that she'd be in and out before midnight, that the pendant would guide her and she'd find what she was looking for without any fuss. She'd told herself a lot of things on the bus ride over, watching the orange blur of streetlamps give way to darker roads, and she believed fewer of them with every step she took into the park. The main gates had been locked, of course. She'd climbed the side wall where the stone had crumbled lowest, dropping down into the wet grass with a sound that seemed to carry for miles in the stillness. She stood there a moment, listening to her own breathing, before she moved on. The park stretched ahead of her in shades of grey and black. The path she knew from daytime visits — the one that curved south past the ponds and into the denser treeline — looked different now. Narrower. The grass on either side rose higher than she remembered, and the distant silhouettes of the old oaks sat hunched against a sky that gave almost no light. Cloud cover had eaten the moon whole. She kept her torch low, aimed at the ground in front of her feet. She'd read somewhere that you shouldn't shine a torch into the dark of Richmond Park at night, that the deer would startle and charge. She wasn't entirely certain that was the only reason she kept the beam pointed down. The Heartstone pendant lay warm against her sternum beneath her jacket. She pressed her fingers to it through the fabric out of habit, and found the warmth had deepened since she'd left the road. It pulsed with a faint, slow rhythm, like something sleeping with a heartbeat distinct from her own. That was good, she reminded herself. That meant she was heading the right direction. The path dissolved into open ground, and she navigated by memory and the pendant's pull, crossing the grass until the treeline closed around her. The oaks here were enormous, older than anything that had a right to still be standing, their roots buckling up through the ground in long arches she had to step over. The beam of her torch swept their bark and found faces in the grooves — not really, she knew, just shadows and pattern recognition doing what brains did in the dark. Just that. She heard the deer before she saw them. A rustle in the undergrowth to her left. Then stillness. She stopped walking and held the torch steady, but there was nothing in the beam. After a moment she moved on. The sound came again, further along, keeping pace. Deer moved quietly but not that quietly, and they moved in groups, and they didn't track along parallel to a person's path for two hundred metres without breaking cover. She told herself this one was curious. Territorial, maybe. A stag — rutting season had been recent enough that a large male might still be jumpy and aggressive. She told herself this and kept walking, and the sound kept moving beside her. When it stopped, the silence felt louder than the footfalls had. She reached the boundary stones earlier than she expected. They stood in a rough arc at the edge of the clearing, ancient oaks split and weathered into shapes that weren't quite natural, their angles too deliberate, their spacing too precise to be the work of anything but intention. Wildflowers grew at their bases in defiance of the season — small white things, and something pale yellow she couldn't name, their petals open as though it were noon in July rather than a November night close to midnight. She crouched beside one and touched a petal. It was soft and entirely real. The Grove sat beyond them, the clearing itself lower than the surrounding ground, cupped like a palm held open. She could feel the air change as she passed the first stone — a pressure shift, like descending in a lift, like the world had adjusted its hold on her very slightly. She went in. The pendant's pulse quickened. She unzipped her jacket and curled her fingers around it, and the warmth spread into her palm like a coal held through cloth. She was looking for a marker, something she'd been told to find. A split stone near the centre of the clearing, half-buried, with markings on its underside. She started towards the middle of the Grove, her torch sweeping slow arcs across the grass. That was when she heard the breathing. Not hers. Hers she could account for — the careful, measured pull and push of someone trying to stay calm. This was different. Slower. Heavier. Coming from somewhere behind her and slightly to the left, near one of the boundary oaks. She turned. Her torch found nothing but the standing stones and the wildflowers and the dark. She stood without moving for long enough that her calves began to ache from the tension of being ready to run, and nothing moved, and the breathing didn't repeat, and she began to construct reasonable explanations. Sound carried strangely in enclosed spaces. She was tired. She'd been frightened coming in and her mind was primed to misread stimulus. She turned back to the centre of the clearing. The torch beam slid across the grass, and she saw the depression in the ground she'd been looking for — shallow, circular, the soil slightly darker — and there was the split stone at its edge, just as she'd been told. She crossed towards it and was almost there when she noticed that the wildflowers around the depression were all closed. Every one of them. Petals drawn tight as fists. The ones at the boundary stones had been open. She stopped. The pendant went cold. Not cooler — cold. Ice-against-skin cold, a sudden drop that made her breath catch, and she pulled her hand away from it and pressed it to her side and stood in the centre of the Grove and understood, with a clarity that had nothing to do with reasoning, that something in the clearing had noticed her. She didn't move. She didn't shine the torch to her left, where the grass had begun, very quietly, to bend.
created_at"2026-02-19T15:07:41.414Z" 2/19/2026, 3:07:41 PM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency667
moderation_latency(null)
generation_time38700
tokens_prompt1038
tokens_completion1550
native_tokens_prompt1047
native_tokens_completion1351
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"
usage0.023406
router(null)
provider_responses
0
endpoint_id"6d408764-7dd7-4626-bb87-a6cc1589bc86"
id"msg_01GaWx9hDTg7qkkYon2ANamg"
is_byokfalse
latency667
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
provider_name"Anthropic"
status200
api_type"completions"
id"gen-1771513661-O0AZJHckqJ1eQ8ra24VM"
upstream_id"msg_01GaWx9hDTg7qkkYon2ANamg"
total_cost0.023406
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags0
71.51% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1053
totalAiIsmAdverbs6
found
0
adverb"really"
count1
1
adverb"very"
count2
2
adverb"slightly"
count3
highlights
0"really"
1"very"
2"slightly"
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)
52.52% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1053
totalAiIsms10
found
0
word"warmth"
count2
1
word"pulsed"
count1
2
word"navigated"
count1
3
word"silence"
count1
4
word"could feel"
count1
5
word"pulse"
count1
6
word"quickened"
count1
7
word"measured"
count1
8
word"tension"
count1
highlights
0"warmth"
1"pulsed"
2"navigated"
3"silence"
4"could feel"
5"pulse"
6"quickened"
7"measured"
8"tension"
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
narrationSentences74
matches(empty)
84.94% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount3
narrationSentences74
filterMatches(empty)
hedgeMatches
0"seemed to"
1"started to"
2"began to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences74
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
maxSentenceWordsSeen54
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1060
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions6
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions10
wordCount1060
uniqueNames6
maxNameDensity0.28
worstName"Grove"
maxWindowNameDensity1
worstWindowName"Grove"
discoveredNames
Park2
Richmond2
Heartstone1
July1
November1
Grove3
persons
0"Grove"
places
0"Park"
1"Richmond"
2"July"
globalScore1
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences56
glossingSentenceCount1
matches
0"sound that seemed to carry for miles in the stillness"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount1060
matches(empty)
76.58% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount2
totalSentences74
matches
0"matter, that she'd"
1"noticed that the"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs32
mean33.13
std27.77
cv0.838
sampleLengths
09
175
251
373
453
551
614
788
88
931
108
1171
1211
139
1492
1551
163
1727
1843
197
2041
212
2214
2358
249
2561
269
279
282
294
3056
3120
81.56% Passive voice overuse
Target: ≤2% passive sentences
passiveCount5
totalSentences74
matches
0"been locked"
1"been told"
2"been frightened"
3"was primed"
4"been told"
5"been open"
85.71% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount3
totalVerbs175
matches
0"was looking"
1"was heading"
2"was looking"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount10
semicolonCount0
flaggedSentences8
totalSentences74
ratio0.108
matches
0"The path she knew from daytime visits — the one that curved south past the ponds and into the denser treeline — looked different now."
1"The beam of her torch swept their bark and found faces in the grooves — not really, she knew, just shadows and pattern recognition doing what brains did in the dark."
2"A stag — rutting season had been recent enough that a large male might still be jumpy and aggressive."
3"Wildflowers grew at their bases in defiance of the season — small white things, and something pale yellow she couldn't name, their petals open as though it were noon in July rather than a November night close to midnight."
4"She could feel the air change as she passed the first stone — a pressure shift, like descending in a lift, like the world had adjusted its hold on her very slightly."
5"Hers she could account for — the careful, measured pull and push of someone trying to stay calm."
6"The torch beam slid across the grass, and she saw the depression in the ground she'd been looking for — shallow, circular, the soil slightly darker — and there was the split stone at its edge, just as she'd been told."
7"Not cooler — cold."
88.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1053
adjectiveStacks2
stackExamples
0"lay warm against her"
1"kept moving beside her."
adverbCount41
adverbRatio0.0389363722697056
lyAdverbCount12
lyAdverbRatio0.011396011396011397
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences74
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences74
mean14.32
std11.63
cv0.812
sampleLengths
09
17
231
337
48
529
614
712
825
91
1028
117
1214
1324
1415
1511
1623
1717
186
198
2024
2131
2231
232
248
258
262
2715
286
298
3029
317
322
3319
3414
3511
369
3739
3839
398
406
4119
4232
433
444
4523
4612
4715
4816
497
45.50% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats13
diversityRatio0.3783783783783784
totalSentences74
uniqueOpeners28
0.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount0
totalSentences65
matches(empty)
ratio0
29.23% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount31
totalSentences65
matches
0"She'd told herself it didn't"
1"She'd told herself a lot"
2"She'd climbed the side wall"
3"She stood there a moment,"
4"She kept her torch low,"
5"She'd read somewhere that you"
6"She wasn't entirely certain that"
7"She pressed her fingers to"
8"It pulsed with a faint,"
9"She heard the deer before"
10"She stopped walking and held"
11"She told herself this one"
12"She told herself this and"
13"She reached the boundary stones"
14"They stood in a rough"
15"She crouched beside one and"
16"It was soft and entirely"
17"She could feel the air"
18"She went in."
19"She unzipped her jacket and"
ratio0.477
0.00% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount60
totalSentences65
matches
0"Richmond Park at night belonged"
1"Rory had known that before"
2"She'd told herself it didn't"
3"She'd told herself a lot"
4"The main gates had been"
5"She'd climbed the side wall"
6"She stood there a moment,"
7"The park stretched ahead of"
8"The path she knew from"
9"The grass on either side"
10"Cloud cover had eaten the"
11"She kept her torch low,"
12"She'd read somewhere that you"
13"She wasn't entirely certain that"
14"The Heartstone pendant lay warm"
15"She pressed her fingers to"
16"It pulsed with a faint,"
17"That was good, she reminded"
18"That meant she was heading"
19"The path dissolved into open"
ratio0.923
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences65
matches(empty)
ratio0
48.87% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences38
technicalSentenceCount5
matches
0"The grass on either side rose higher than she remembered, and the distant silhouettes of the old oaks sat hunched against a sky that gave almost no light."
1"The oaks here were enormous, older than anything that had a right to still be standing, their roots buckling up through the ground in long arches she had to ste…"
2"They stood in a rough arc at the edge of the clearing, ancient oaks split and weathered into shapes that weren't quite natural, their angles too deliberate, the…"
3"Wildflowers grew at their bases in defiance of the season — small white things, and something pale yellow she couldn't name, their petals open as though it were…"
4"Ice-against-skin cold, a sudden drop that made her breath catch, and she pulled her hand away from it and pressed it to her side and stood in the centre of the …"
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags0
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags0
75.4804%