Run: 2026-06-01-01KT1HDZNTZ00FHRCJS8R92VKN

Run Details

Model:
Claude Opus 4.8 (Reasoning, Low)
Test:
Bad Writing Habits
Scenario:
Fantasy: entering an ancient ruin
Duration:
39.3s
Cost:
$0.066125
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
37.84% Adverbs in dialogue tags (details)
95.22% AI-ism adverb frequency (details)
100.00% AI-ism character names (details)
100.00% AI-ism location names (details)
28.30% AI-ism word frequency (details)
100.00% Cliché density (details)
100.00% Emotion telling (show vs. tell) (details)
100.00% Filter word density (details)
100.00% Gibberish response detection (details)
100.00% Markdown formatting overuse (details)
100.00% Missing dialogue indicators (quotation marks) (details)
83.33% Name drop frequency (details)
100.00% Narrator intent-glossing (details)
100.00% "Not X but Y" pattern overuse (details)
100.00% Overuse of "that" (subordinate clause padding) (details)
100.00% Paragraph length variance (details)
100.00% Passive voice overuse (details)
100.00% Past progressive (was/were + -ing) overuse (details)
0.00% Em-dash & semicolon overuse (details)
94.97% Purple prose (modifier overload) (details)
100.00% Repeated phrase echo (details)
100.00% Sentence length variance (details)
72.73% Sentence opener variety (details)
0.00% Adverb-first sentence starts (details)
100.00% Pronoun-first sentence starts (details)
44.91% Subject-first sentence starts (details)
0.00% Subordinate conjunction sentence starts (details)
57.14% Technical jargon density (details)
100.00% Useless dialogue additions (details)
68.92% Dialogue tag variety (said vs. fancy) (details)
79.4453% Overall

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> <character id="4418" name="Nyx" aliases="Nyx, the Shadow, Nightwhisper" pronouns="they/them" species="Shade" storyRole="Wild Card"> <eyeColor>faintly glowing violet</eyeColor> <height>approximately 6'2" in solid form</height> <age>ageless</age> <form>humanoid silhouette of living shadow, can shift between solid and incorporeal</form> <voice>sounds like a whisper carried on the wind</voice> <description>A being of living shadow, existing between the mortal plane and the spaces between realms.</description> <backstory>Nyx was once a human sorcerer named Aldric who became trapped between realms during a failed summoning ritual in 1643. They now exist as a Shade, bound to the mortal plane but able to slip between shadows.</backstory> </character> <character id="4424" name="Isolde Varga" aliases="Isolde, the Seer" pronouns="she/her" species="Half-Fae" storyRole="Oracle"> <eyeColor>pale lavender</eyeColor> <hair>silver, reaching her waist</hair> <height>5'5"</height> <age>300 years old</age> <appearance>ethereal, ageless</appearance> <speech>speaks in riddles</speech> <footprints>leaves no footprints when she walks</footprints> <compulsion>cannot lie (Fae compulsion) but can mislead</compulsion> <description>A Half-Fae seer exiled from the Fae Courts for sharing visions with mortals.</description> <backstory>She now lives in a hidden grove in Richmond Park, offering cryptic prophecies to those who seek her out.</backstory> </character> <location id="853" name="Dymas (Gluttony)" aliases="Dymas, gluttony, Dymasian" realm="Hel" sin="Gluttony"> <ruler>Prince Belphegor</ruler> <skyColor>warm amber</skyColor> <description>A place of excess and indulgence. Sprawling vineyards, orchards, and gardens provide exotic ingredients for master chefs — often helbound souls contracted from Earth. Grand feasts and culinary competitions are common.</description> </location> <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> <item id="2006" name="Fae-Forged Blade" aliases="the Fae blade, Isolde's gift" type="Weapon" origin="The Fae Courts"> <material>moonsilver</material> <shape>slender, leaf-shaped dagger</shape> <temperature>always cold to the touch</temperature> <glow>faintly luminescent in moonlight</glow> <power>can cut through magical wards; particularly effective against demons</power> <givenTo>given to Aurora by Isolde as a gift</givenTo> <description>A weapon of the Fae Courts, rare and highly coveted.</description> </item> <lore id="7001" name="The Veil" aliases="the Veil, the Barrier, the Boundary" category="Cosmology"> <solsticeEffect>weakens during the winter solstice, strengthens during the summer solstice</solsticeEffect> <appearance>faint shimmering distortion visible only to those with supernatural sight</appearance> <monitoring>rift points (tears in the Veil) are monitored by the Wardens</monitoring> <description>The Veil is the metaphysical barrier separating Earth from Hel and the Fae Realms.</description> </lore> </codex> Continue the story using the following instructions: <instructions> Write a fully fleshed out scene of at least 1000 words in the fantasy genre. A small group enters an ancient, otherworldly place for the first time. The environment is alien and wondrous. Describe their exploration — what they see, hear, and feel as they move deeper. Include moments of discovery, unease, and wonder. Let the world-building emerge through the characters' experience rather than exposition. Use the codex entries above as your world reference for characters, setting, and lore. Only include the prose of the scene without any markdown or commentary. </instructions>

Model response

AI
The standing stones came into view between two oaks, grey and lichen-spotted, taller than any man. Rory slowed at the threshold. The air past the stones shimmered the way heat rises off tarmac in summer, except the day around them sat cold and damp, ordinary London grey hanging over Richmond Park. "That's it, then," Eva whispered behind her. "That's the boundary." "You don't have to whisper." "Feels like the kind of place you whisper in." Nyx moved ahead of them, their shadow-form thinning at the edges where the light hit it strange. "The Veil bends here. Thin as wet paper." They reached out one hand toward the gap between the stones, and the darkness of their fingers rippled, drawn toward it. "Step through together. Don't lag." Rory pressed her palm against the Heartstone at her collar out of habit. It lay quiet, no warmth, no pulse. Whatever waited beyond the stones, it wasn't Hel. She took a breath and crossed. The cold vanished. It wasn't warmth exactly that replaced it but a softness, like stepping into a room someone had left a candle burning in. The grey sky was gone. Above her stretched a canopy of trees she had no name for, their leaves shading from silver to a green so deep it bordered on black, and through the gaps overhead the light came golden and slow, thick as honey poured through water. No sun. The light simply was, hanging in the air, settling on her skin. Eva came through a half-second later and stopped dead, mouth open. "Rory. Rory, look at the—" "I see it." Wildflowers carpeted the clearing, every colour at once, and they should not all have bloomed in the same season. Bluebells against poppies against something with petals like spun glass that chimed faintly when the breeze touched them. The grass beneath their feet was springy, too soft, and where Nyx passed it bent and didn't rise again. Where Rory stepped it sprang back as if she'd never been there at all. "Don't pick anything," Nyx said. "Don't eat anything. Don't drink. You know the stories." "Everyone knows the stories." Eva crouched anyway, hands hovering over a flower that pulsed faint pink, like a heartbeat. "They never say how it feels, though. Like the whole place is breathing." It did. Rory noticed it now that Eva named it—a slow swell and settle in the light itself, the flowers leaning in and easing back, the trees creaking on a rhythm with no wind to drive them. She turned a slow circle. Behind them the standing stones still marked the gap they'd come through, but the park beyond had gone hazy and distant, like a photograph of a place she'd once visited. "How long do we have?" she asked. Nyx's violet eyes flickered. "Time runs sideways here. An hour, a day. We won't know until we leave." They drifted forward, incorporeal now, sliding between the trunks. "Keep moving. She's deeper in." They followed a path that wasn't a path—just a place where the flowers thinned and the moss grew flat and inviting. The deeper they went, the louder the silence became. Not silence, Rory corrected herself. Sound. There was sound everywhere, but soft, layered. Water somewhere she couldn't see. A high sustained note like a wet finger on crystal. And under it all, almost below hearing, something that might have been a voice or many voices, singing in a language that made the back of her teeth ache. "You hear that?" she said. Eva nodded slowly. "Trying not to." "Good instinct," Nyx murmured. "It wants you to follow it off the path. Don't." They passed a tree split open down its trunk, and inside, instead of wood, Rory saw stars. A pocket of night sky folded into the heart of it, deep and glittering, and when she leaned closer she felt the pull of falling, that lurch in the stomach you get at the edge of a great height. She stepped back fast. "This place doesn't obey," she said. "Anything." "It obeys older rules." Nyx solidified again, their silhouette sharpening, and laid a hand near—not on—her shoulder. "Rules from before your kind drew lines around what's possible. The Fae carved this pocket out of two worlds and made it answer to neither. That's why she came here. Nowhere else would have her." Eva had stopped at a stream they hadn't heard until they nearly stepped in it. The water ran upward, climbing a slope of dark stones, gathering into a pool that hung above their heads without spilling. Tiny lights drifted in it, slow as embers. "Okay," Eva breathed. "Okay, that's—that's not allowed. Water doesn't do that." "Water does what it's told here." Rory found she was smiling, despite the cold knot of unease sitting under her ribs. Wonder and dread, she was learning, lived close together. "Don't touch it." "I wasn't going to touch it." "You were absolutely going to touch it." The breeze shifted then, carrying a scent—warm bread, cut grass, her mother's kitchen on a Sunday, all impossible and all real at once. Rory's chest tightened with a longing she had no name for. She caught Eva swaying toward it, eyes glassy. "Eva." She gripped her friend's wrist, found the pulse there hammering. "Eva, with me." Eva blinked. Came back. "I smelled my nan's house. She's been dead six years." "It shows you what you want," Nyx said quietly. "That's its cruelty. It isn't lying. The thing you smell is real—somewhere, somewhen. It just isn't here." They turned, the glow of their eyes the only steady thing in all that shifting light. "Keep your wants close. This place will use them as a leash." Rory swallowed and let go of Eva's wrist. Ahead, the trees opened wider, and the golden light pooled brighter, gathering toward a clearing within the clearing where the singing—if it was singing—grew clearer and the chiming flowers fell still. "She's there," Nyx said. "Past the next ring of oaks. Whatever she tells you, remember—she cannot lie. But she will let you lie to yourself." Rory pressed her hand to the Heartstone once more. Still cold. Still quiet. She drew her shoulders back and walked toward the light.
created_at"2026-06-01T12:09:42.847Z" 6/1/2026, 12:09:42 PM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1056
moderation_latency(null)
generation_time39317
tokens_prompt1816
tokens_completion1558
native_tokens_prompt2695
native_tokens_completion2106
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)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"end_turn"
service_tier"default"
usage0.066125
router(null)
provider_responses
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endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_013J6jV8o9GUJd89a9vrMmGL"
is_byokfalse
latency1052
model_permaslug"anthropic/claude-4.8-opus-20260528"
provider_name"Anthropic"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.16.0; linux; x64))"
http_referer(null)
request_id"req-1780315782-sMhfn8bHwicoP8OEt0iO"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780315782-CEjtDQRUVsJfSgoCvoEl"
upstream_id"msg_013J6jV8o9GUJd89a9vrMmGL"
total_cost0.066125
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
37.84% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags16
adverbTagCount3
adverbTags
0"Eva crouched anyway [anyway]"
1"Nyx solidified again [again]"
2"Nyx said quietly [quietly]"
dialogueSentences37
tagDensity0.432
leniency0.865
rawRatio0.188
effectiveRatio0.162
95.22% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1046
totalAiIsmAdverbs1
found
0
adverb"slowly"
count1
highlights
0"slowly"
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)
28.30% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1046
totalAiIsms15
found
0
word"shimmered"
count1
1
word"whisper"
count2
2
word"warmth"
count2
3
word"pulse"
count2
4
word"pulsed"
count1
5
word"flickered"
count1
6
word"silence"
count2
7
word"crystal"
count1
8
word"lurch"
count1
9
word"stomach"
count1
10
word"absolutely"
count1
highlights
0"shimmered"
1"whisper"
2"warmth"
3"pulse"
4"pulsed"
5"flickered"
6"silence"
7"crystal"
8"lurch"
9"stomach"
10"absolutely"
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
narrationSentences67
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount0
narrationSentences67
filterMatches(empty)
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences88
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen43
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1036
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions17
unquotedAttributions1
matches
0"Not silence, Rory corrected herself."
83.33% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions36
wordCount777
uniqueNames10
maxNameDensity1.29
worstName"Rory"
maxWindowNameDensity2.5
worstWindowName"Eva"
discoveredNames
London1
Richmond1
Park1
Nyx8
Rory10
Heartstone2
Hel1
Eva10
Wonder1
Sunday1
persons
0"Nyx"
1"Rory"
2"Eva"
places
0"London"
1"Richmond"
2"Park"
3"Heartstone"
globalScore0.856
windowScore0.833
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences42
glossingSentenceCount0
matches(empty)
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount1036
matches(empty)
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences88
matches
0"falling, that lurch"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs36
mean28.78
std24.44
cv0.849
sampleLengths
051
110
25
39
451
534
63
784
811
95
103
1170
1214
1332
1472
157
1632
1787
185
196
2014
2160
227
2352
2444
2511
2633
276
287
2942
3014
3114
3254
3339
3425
3523
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount1
totalSentences67
matches
0"was gone"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount2
totalVerbs144
matches
0"was learning"
1"was singing"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount7
semicolonCount0
flaggedSentences5
totalSentences88
ratio0.057
matches
0"Rory noticed it now that Eva named it—a slow swell and settle in the light itself, the flowers leaning in and easing back, the trees creaking on a rhythm with no wind to drive them."
1"They followed a path that wasn't a path—just a place where the flowers thinned and the moss grew flat and inviting."
2"\"It obeys older rules.\" Nyx solidified again, their silhouette sharpening, and laid a hand near—not on—her shoulder."
3"The breeze shifted then, carrying a scent—warm bread, cut grass, her mother's kitchen on a Sunday, all impossible and all real at once."
4"Ahead, the trees opened wider, and the golden light pooled brighter, gathering toward a clearing within the clearing where the singing—if it was singing—grew clearer and the chiming flowers fell still."
94.97% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount787
adjectiveStacks0
stackExamples(empty)
adverbCount36
adverbRatio0.045743329097839895
lyAdverbCount7
lyAdverbRatio0.008894536213468869
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences88
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences88
mean11.77
std9.77
cv0.83
sampleLengths
016
15
230
37
43
55
69
717
829
95
1013
117
128
136
143
1522
165
1743
182
1912
2011
215
223
2319
2418
2519
2614
275
289
2919
3013
312
3235
335
3430
357
364
3723
385
3921
409
415
421
437
445
4510
4629
475
483
493
72.73% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats6
diversityRatio0.4772727272727273
totalSentences88
uniqueOpeners42
0.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount0
totalSentences53
matches(empty)
ratio0
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount13
totalSentences53
matches
0"They reached out one hand"
1"It lay quiet, no warmth,"
2"She took a breath and"
3"It wasn't warmth exactly that"
4"She turned a slow circle."
5"They drifted forward, incorporeal now,"
6"They followed a path that"
7"They passed a tree split"
8"She stepped back fast."
9"She caught Eva swaying toward"
10"She gripped her friend's wrist,"
11"They turned, the glow of"
12"She drew her shoulders back"
ratio0.245
44.91% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount44
totalSentences53
matches
0"The standing stones came into"
1"Rory slowed at the threshold."
2"The air past the stones"
3"Eva whispered behind her"
4"Nyx moved ahead of them,"
5"They reached out one hand"
6"Rory pressed her palm against"
7"It lay quiet, no warmth,"
8"Whatever waited beyond the stones,"
9"She took a breath and"
10"The cold vanished."
11"It wasn't warmth exactly that"
12"The grey sky was gone."
13"The light simply was, hanging"
14"Eva came through a half-second"
15"Wildflowers carpeted the clearing, every"
16"Bluebells against poppies against something"
17"The grass beneath their feet"
18"Eva crouched anyway, hands hovering"
19"Rory noticed it now that"
ratio0.83
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences53
matches(empty)
ratio0
57.14% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences25
technicalSentenceCount3
matches
0"Bluebells against poppies against something with petals like spun glass that chimed faintly when the breeze touched them."
1"And under it all, almost below hearing, something that might have been a voice or many voices, singing in a language that made the back of her teeth ache."
2"The water ran upward, climbing a slope of dark stones, gathering into a pool that hung above their heads without spilling."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags16
uselessAdditionCount0
matches(empty)
68.92% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags9
fancyCount3
fancyTags
0"Eva whispered (whisper)"
1"Nyx murmured (murmur)"
2"Eva breathed (breathe)"
dialogueSentences37
tagDensity0.243
leniency0.486
rawRatio0.333
effectiveRatio0.162
79.4453%