Run: 2026-02-18-01KHQ9410SS1GKPP5R929WXP23

Run Details

Duration:
54.2s
Cost:
$0.033882
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 oak trees rose like cathedral pillars around the boundary of the grove, massive and ancient, their bark silver-grey in the moonlight. Rory had been here twice before, always in daylight, always with someone else at her side. She had told herself that was coincidence. Standing now at the treeline with only her phone torch and the cold October air for company, she understood it hadn't been coincidence at all. She went in anyway. The pendant was the reason. It had started warming against her sternum an hour ago while she was eating leftover noodles above Silas' bar, an insistent gentle heat, the way a coal holds warmth long after the fire has gone. She'd touched it through her shirt and felt the pulse of it — rhythmic, almost biological — and known without being able to explain how she knew that it was pointing her here. To Richmond. To the grove. She'd taken the tube and then the bus and then walked twenty minutes along the dark edge of the park, telling herself with every step that she was being ridiculous. That was fine. Ridiculous was better than the alternative, which was that the pendant meant what it seemed to mean, and that there was genuinely something waiting for her in the clearing between worlds at eleven o'clock on a Tuesday night. The wildflowers were still blooming. That was the first thing she noticed as she stepped between the standing stones — the way there always were flowers here, regardless of season. White and violet and pale yellow, low to the ground, faintly luminous where the moonlight caught their petals. In daylight it was beautiful. Now it looked like something preserved under glass. Too still. Too perfect. Rory swept her phone torch in a slow arc. The grove was small — perhaps thirty metres across — and she could see the whole of it from where she stood. Mossy earth, a tumble of flat stones near the centre, the wildflowers carpeting the ground between patches of exposed root. Empty. Quiet. She breathed out slowly and the mist of her breath dissolved into the cold air. "Right," she said quietly to no one. Hearing her own voice helped. She walked toward the centre stones, her footsteps soft on the moss. The pendant pulsed again, stronger now, a warmth that spread up through her sternum like the first sip of tea. She looked down at it where it lay against the front of her jacket — that faint inner glow, the deep crimson of the stone bleeding a dim rose-coloured light through the fabric. She hadn't zipped the jacket fully. She hadn't thought to. She stopped at the central stones and stood still and listened. The park was never truly silent. There was always the distant sound of the A316, a low arterial murmur of London carrying itself forward through the night, and there were usually foxes, and the shift of branches in whatever wind was moving. These sounds existed now at the grove's perimeter. But within the boundary of the standing oaks, the air was different. Thicker. The sounds of the city reached her as though filtered through water, distant and compressed, and in their place was a quiet that wasn't quite absence of sound. More like something waiting for the right moment to begin. She turned her torch toward the far edge of the clearing, scanning the space between the oaks. Nothing there. She made herself look away. She crouched by the flat stones and pressed her palm to the largest one, which was cold and slightly damp, perfectly ordinary beneath her fingers. Her left wrist rested against its edge, and she felt the crescent scar brush the stone's surface the way it always caught on things — cuffs, countertops, the corner of a page — a small habitual reminder. The wildflowers nearest her ankle moved. Not in wind. There was no wind inside the grove. The grove had its own atmosphere, its own interior weather, and she had noticed before how still the air was here even when the trees outside the boundary were bending. These flowers moved the way flowers do when something brushes past them low to the ground. A small displacement. Then stillness again. Rory stood up slowly. She didn't run the torch toward the flowers. She wasn't sure she wanted to see whatever was there. That was new, that particular quality of not wanting to know. She was not generally a person prone to dread. She was generally a person who checked under the bed and opened the cupboard and said well, nothing there then, in a practical voice. But the grove at night had its own logic and she found herself defaulting to it. She stood very still and waited. Somewhere to her left, something exhaled. It was a small sound, barely a sound at all, but she was certain of what it was — the kind of soft exhalation made by something that had been holding very still and had let a little of its held breath go. Not a nocturnal animal. The sound was too controlled, too deliberate in its quietness, as if whatever had made it understood the value of silence and had only just failed. Rory did not turn her head immediately. She kept her gaze on the central stones and let her peripheral vision work, scanning leftward. She had lived with Evan long enough to know that stillness was a weapon. That the time between hearing something and reacting was the time in which decisions were made. Left, fifteen degrees, something was standing at the treeline. She couldn't see it directly. That was the thing — the thing at the edge of her vision had a shape, a human-ish shape, taller than she would have liked, standing with the particular stillness of something that doesn't move because it doesn't need to. When she turned her head toward it, it was a shadow. An arrangement of tree trunks and darkness that formed nothing. But in the periphery it was there. She shifted her weight and it didn't move. The pendant pulsed again. Hot now. Almost uncomfortably hot, and she flattened her palm against it through her jacket and felt the warmth radiating upward into her fingers. It had never done this before. Whatever was near wasn't just fae-touched, wasn't just a shimmer in the boundary between this place and whatever lay beyond the grove. The stone was telling her something different now. Something with more urgency in its language. She turned her torch toward the shape. Bark and shadow. Nothing there. She swung the beam back to centre and stood breathing. Her heartbeat was measured and even — she was grateful for that. She had spent a year learning to keep her heartbeat even, to make her face give nothing away, to treat the body as a manageable system. That year had not been wasted. The moss to her right produced a single soft sound. A settling weight. A compression. And then, in her left periphery, the shadow moved. Not lurching. Not rushing. It moved the way fog moves, a slow decisive drift that crossed from the treeline toward the centre of the clearing, and when she turned her torch directly toward it there was nothing and when she looked away it was closer and it had no face that she could discern and it had no particular edges but it moved with intention, with the patience of something that understood time differently from her, and the grove around her seemed to hold its breath in the way that groves apparently could. Rory closed her fingers around the pendant and held on. The warmth in the stone flared sudden and sharp, bright heat against her palm, and the pendant lit through her fingers like a coal — the crimson of it visible even in her closed fist — and the shadow at the edge of her vision paused. Just paused. In the space of that pause she became certain of one thing with a clarity that felt almost physical: whatever this was, it was not the thing she had come here to find. The pendant hadn't led her here for this. This was something else. Something that had noticed the same warmth she was carrying and had followed it into the grove, and had been watching her from the moment she crossed the standing stones. She took one step backward, then another, her torch held steady and pointing nowhere useful. The shadow drifted again, unhurried, lateral now, moving along the treeline. She kept backing up until her heel found the edge of the standing stone boundary and she felt the change in air against the back of her neck — the city returning, the faint smell of exhaust and damp leaves, the low murmur of the A316 resolving back into itself, London reaching in from the outside to claim her. She stepped back through the boundary. The pendant cooled. She stood on the outside of the standing oaks and watched the clearing and there was nothing in it. Wildflowers in their impossible bloom. Flat stones at the centre. Moonlight and stillness. She stayed there for a long time, the cold working into her jacket, her left hand pressed against the pendant through the fabric. Nothing came out of the grove after her. Eventually she put her phone torch away and turned and walked back toward the park gate through the dark, and the city came up around her gradually — the orange glow of street lamps, the sound of tyres on wet tarmac, someone's music from a passing car. Normal things. Solid things. She didn't run. But she walked quickly, and she didn't look back, and she didn't take her hand off the pendant until the park gate was closed behind her.
created_at"2026-02-18T02:27:23.825647+00:00" 2/18/2026, 2:27:23 AM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency884
moderation_latency(null)
generation_time54114
tokens_prompt812
tokens_completion2403
native_tokens_prompt839
native_tokens_completion2091
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"
usage0.033882
router(null)
provider_responses
0
id"msg_01PjLidsG4rwv1UrpwDTSAMS"
status200
is_byokfalse
latency884
endpoint_id"6d408764-7dd7-4626-bb87-a6cc1589bc86"
provider_name"Anthropic"
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
api_type"completions"
id"gen-1771381589-5YuyPjhmTOS8WIR3akaG"
upstream_id"msg_01PjLidsG4rwv1UrpwDTSAMS"
total_cost0.033882
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"

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]"
dialogueSentences1
tagDensity1
leniency1
rawRatio0.5
effectiveRatio0.5
75.48% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1631
totalAiIsmAdverbs8
found
0
adverb"slowly"
count2
1
adverb"truly"
count1
2
adverb"slightly"
count1
3
adverb"perfectly"
count1
4
adverb"very"
count2
5
adverb"quickly"
count1
highlights
0"slowly"
1"truly"
2"slightly"
3"perfectly"
4"very"
5"quickly"
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)
38.69% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1631
totalAiIsms20
found
0
word"warmth"
count5
1
word"pulse"
count1
2
word"rhythmic"
count1
3
word"perfect"
count1
4
word"footsteps"
count1
5
word"pulsed"
count2
6
word"scanning"
count2
7
word"reminder"
count1
8
word"silence"
count1
9
word"weight"
count2
10
word"measured"
count1
11
word"lurching"
count1
12
word"resolving"
count1
highlights
0"warmth"
1"pulse"
2"rhythmic"
3"perfect"
4"footsteps"
5"pulsed"
6"scanning"
7"reminder"
8"silence"
9"weight"
10"measured"
11"lurching"
12"resolving"
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
emotionTells1
narrationSentences120
matches
0"was grateful"
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount2
narrationSentences120
filterMatches
0"look"
hedgeMatches
0"seemed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences120
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
maxSentenceWordsSeen89
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1643
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
totalMentions12
wordCount1624
uniqueNames7
maxNameDensity0.31
worstName"Rory"
maxWindowNameDensity1
worstWindowName"Rory"
discoveredNames
October1
Richmond1
Tuesday1
Hearing1
London2
Evan1
Rory5
persons
0"Evan"
1"Rory"
places
0"Richmond"
1"London"
globalScore1
windowScore1
57.41% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences81
glossingSentenceCount3
matches
0"looked like something preserved under gla"
1"quite absence of sound"
2"ay that groves apparently could"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.609
wordCount1643
matches
0"no particular edges but"
83.33% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount3
totalSentences120
matches
0"knew that it"
1"was that the"
2"know that stillness"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs45
mean36.51
std34.95
cv0.957
sampleLengths
070
14
2149
365
468
512
675
711
8101
917
102
115
1262
136
1462
154
1678
176
186
1973
2053
219
2273
238
2471
257
265
2754
2815
299
3093
3110
3246
332
3475
3515
3611
3759
386
393
4055
418
4251
433
4426
99.42% Passive voice overuse
Target: ≤2% passive sentences
passiveCount2
totalSentences120
matches
0"were made"
1"been wasted"
3.09% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount7
totalVerbs237
matches
0"was eating"
1"was pointing"
2"was being"
3"were bending"
4"was standing"
5"was telling"
6"was carrying"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount15
semicolonCount0
flaggedSentences11
totalSentences120
ratio0.092
matches
0"She'd touched it through her shirt and felt the pulse of it — rhythmic, almost biological — and known without being able to explain how she knew that it was pointing her here."
1"That was the first thing she noticed as she stepped between the standing stones — the way there always were flowers here, regardless of season."
2"The grove was small — perhaps thirty metres across — and she could see the whole of it from where she stood."
3"She looked down at it where it lay against the front of her jacket — that faint inner glow, the deep crimson of the stone bleeding a dim rose-coloured light through the fabric."
4"Her left wrist rested against its edge, and she felt the crescent scar brush the stone's surface the way it always caught on things — cuffs, countertops, the corner of a page — a small habitual reminder."
5"It was a small sound, barely a sound at all, but she was certain of what it was — the kind of soft exhalation made by something that had been holding very still and had let a little of its held breath go."
6"That was the thing — the thing at the edge of her vision had a shape, a human-ish shape, taller than she would have liked, standing with the particular stillness of something that doesn't move because it doesn't need to."
7"Her heartbeat was measured and even — she was grateful for that."
8"The warmth in the stone flared sudden and sharp, bright heat against her palm, and the pendant lit through her fingers like a coal — the crimson of it visible even in her closed fist — and the shadow at the edge of her vision paused."
9"She kept backing up until her heel found the edge of the standing stone boundary and she felt the change in air against the back of her neck — the city returning, the faint smell of exhaust and damp leaves, the low murmur of the A316 resolving back into itself, London reaching in from the outside to claim her."
10"Eventually she put her phone torch away and turned and walked back toward the park gate through the dark, and the city came up around her gradually — the orange glow of street lamps, the sound of tyres on wet tarmac, someone's music from a passing car."
94.20% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1630
adjectiveStacks0
stackExamples(empty)
adverbCount76
adverbRatio0.046625766871165646
lyAdverbCount24
lyAdverbRatio0.014723926380368098
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences120
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences120
mean13.69
std13.77
cv1.006
sampleLengths
022
116
27
325
44
55
635
733
82
93
1030
113
1238
135
1425
1518
165
178
182
192
209
2122
2220
231
241
2515
267
275
2812
2920
3033
316
324
3311
346
3536
368
3712
381
3928
4010
4117
422
435
4425
4537
466
473
487
4930
52.50% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats12
diversityRatio0.375
totalSentences120
uniqueOpeners45
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount5
totalSentences105
matches
0"More like something waiting for"
1"Then stillness again."
2"Somewhere to her left, something"
3"Almost uncomfortably hot, and she"
4"Eventually she put her phone"
ratio0.048
75.24% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount38
totalSentences105
matches
0"She had told herself that"
1"She went in anyway."
2"It had started warming against"
3"She'd touched it through her"
4"She'd taken the tube and"
5"She breathed out slowly and"
6"she said quietly to no"
7"She walked toward the centre"
8"She looked down at it"
9"She hadn't zipped the jacket"
10"She hadn't thought to."
11"She stopped at the central"
12"She turned her torch toward"
13"She made herself look away."
14"She crouched by the flat"
15"Her left wrist rested against"
16"She didn't run the torch"
17"She wasn't sure she wanted"
18"She was not generally a"
19"She was generally a person"
ratio0.362
83.81% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount79
totalSentences105
matches
0"The oak trees rose like"
1"Rory had been here twice"
2"She had told herself that"
3"She went in anyway."
4"The pendant was the reason."
5"It had started warming against"
6"She'd touched it through her"
7"She'd taken the tube and"
8"That was fine."
9"The wildflowers were still blooming."
10"That was the first thing"
11"Rory swept her phone torch"
12"The grove was small —"
13"She breathed out slowly and"
14"she said quietly to no"
15"She walked toward the centre"
16"The pendant pulsed again, stronger"
17"She looked down at it"
18"She hadn't zipped the jacket"
19"She hadn't thought to."
ratio0.752
95.24% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount2
totalSentences105
matches
0"To the grove."
1"Now it looked like something"
ratio0.019
37.04% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences54
technicalSentenceCount8
matches
0"Ridiculous was better than the alternative, which was that the pendant meant what it seemed to mean, and that there was genuinely something waiting for her in t…"
1"She was generally a person who checked under the bed and opened the cupboard and said well, nothing there then, in a practical voice."
2"It was a small sound, barely a sound at all, but she was certain of what it was — the kind of soft exhalation made by something that had been holding very still…"
3"The sound was too controlled, too deliberate in its quietness, as if whatever had made it understood the value of silence and had only just failed."
4"That was the thing — the thing at the edge of her vision had a shape, a human-ish shape, taller than she would have liked, standing with the particular stillnes…"
5"An arrangement of tree trunks and darkness that formed nothing."
6"It moved the way fog moves, a slow decisive drift that crossed from the treeline toward the centre of the clearing, and when she turned her torch directly towar…"
7"Something that had noticed the same warmth she was carrying and had followed it into the grove, and had been watching her from the moment she crossed the standi…"
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
totalTags1
fancyCount0
fancyTags(empty)
dialogueSentences1
tagDensity1
leniency1
rawRatio0
effectiveRatio0
79.8479%