Run: 2026-05-29-01KSSK8Q11MVYNRFVAMS8JKENX

Run Details

Model:
Claude Opus 4.8 (Reasoning)
Test:
Bad Writing Habits
Scenario:
Fantasy: entering an ancient ruin
Duration:
38.9s
Cost:
$0.065550
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
100.00% Adverbs in dialogue tags (details)
100.00% AI-ism adverb frequency (details)
100.00% AI-ism character names (details)
100.00% AI-ism location names (details)
55.97% AI-ism word frequency (details)
66.67% 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)
64.74% Name drop frequency (details)
100.00% Narrator intent-glossing (details)
0.00% "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)
100.00% Purple prose (modifier overload) (details)
100.00% Repeated phrase echo (details)
100.00% Sentence length variance (details)
64.77% Sentence opener variety (details)
60.61% Adverb-first sentence starts (details)
100.00% Pronoun-first sentence starts (details)
41.82% Subject-first sentence starts (details)
0.00% Subordinate conjunction sentence starts (details)
56.28% Technical jargon density (details)
100.00% Useless dialogue additions (details)
73.08% Dialogue tag variety (said vs. fancy) (details)
79.4641% 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 loomed out of the fog like teeth, and Rory stopped between them. "This is it," Eva said. "This is where she said the boundary was." "It doesn't look like anything." Rory pressed her palm against the nearest oak. The bark felt warm, alive, pulsing under her fingers in a slow rhythm that matched no heartbeat she knew. "Wait. Feel that." Nyx slid forward, a smear of darkness against the grey afternoon. "I feel it. The air here is thin. Like skin stretched too far over something underneath." "That's reassuring." "You asked." Rory ducked between the stones first. The others followed — Eva clutching her coat shut, Nyx pouring through the gap like spilled ink. The cold of Richmond Park vanished between one step and the next. Then the light changed. Sunlight slanted gold and thick through the canopy, and the trees were wrong. Not wrong in any way she could name, only that the leaves moved when no wind touched them, turning to follow the three of them as they walked. Wildflowers crowded the clearing floor — bluebells beside foxgloves beside blooms Rory had no name for, petals the colour of bruised plums that breathed open and shut. The grass underfoot gave off a scent of crushed mint and something sweeter beneath, like fruit left to soften in the sun. "It's warm," Eva whispered. "It was November outside." "It isn't November here." Rory crouched, touched a flower. It curled away from her finger, shy. "I don't think it's any month here." Nyx had gone still at the edge of the clearing, their violet eyes narrowed to slits. "Listen." They all stopped. Beneath the birdsong — and there was birdsong, layered and strange, notes bending in ways no throat should manage — ran a low hum. It came up through the soles of Rory's boots, through her teeth, settling behind her sternum like a second pulse. The Heartstone at her throat warmed against her skin, and she pressed two fingers to it. "It's reacting," she said. "The pendant. It's getting warmer." "Then we're close to something." Nyx drifted ahead, testing the ground. Where their form passed over the flowers, the blooms leaned toward the shadow rather than away. "Stay on the path." "What path?" Nyx pointed. A thread of pale moss wound between the trees, almost luminous, curling deeper into the grove. Rory hadn't seen it a moment ago. She was fairly certain it hadn't been there. Eva fell in close behind her. "How long have we been walking?" "Couple minutes." "It feels longer." It did. The light hadn't moved, the sun pinned at the same angle, yet Rory's legs ached as though she'd been climbing for an hour. She glanced back the way they'd come and found no stones, no fog, only more trees fading into golden haze. Her stomach dropped. "Don't look behind you," Nyx murmured. "It encourages the place to lose the way out. Keep your eyes forward." "You couldn't have mentioned that earlier?" "You didn't ask." She wanted to throttle them, and the urge was a comfort, something ordinary to hold against the strangeness. They walked on. The trees thinned and the canopy opened to a sky that was not any sky — neither blue nor amber but some shifting between, clouds moving fast and high while the air below stayed dead calm. A stream cut across the path, the water running clear over stones, and when Rory looked down she saw not her reflection but a flicker of somewhere else: a vaulted ceiling, candlelight, a face she didn't recognise mouthing words she couldn't hear. She jerked back. "Don't drink it," Nyx said. "Don't touch it. The water here shows what the Court wants you to see, never what is." "Lovely." Eva edged around the stream, arms wrapped tight. "Everything in this place wants something." "Yes." Nyx said it plainly. "That's what makes it old." They crossed at a place where flat stepping-stones broke the current, and the hum grew louder, resolving now into something almost like voices — a choir heard through water, words sliding apart before Rory could catch them. The Heartstone pulsed steady against her chest, warm as a held coal. Ahead, the moss-path widened into a second clearing, and Rory's breath caught. A tree stood at its centre that dwarfed the standing oaks behind them. Its trunk was silver-barked and broad as a house, its roots heaving up through the earth in coils thick as her body, and from its branches hung lanterns — no, not lanterns. Lights, suspended without thread or chain, drifting slow as snowfall, each one a soft globe of colour. Pale gold, deep rose, a blue so dark it ached. Beneath them the flowers grew thickest, and the scent here was overwhelming, honeyed and heavy, the kind that made Rory want to lie down in the grass and close her eyes. "Don't," Nyx said, and a cold hand of shadow closed around her wrist. The chill snapped her back. She hadn't realised she'd stopped walking. "The drowsiness is the grove's. Half the mortals who come here never leave. They sleep until they're roots." Eva had gone pale. "You're saying these flowers—" "Were people. Some of them." Nyx's voice carried no cruelty, only fact, which was worse. "Keep moving. She'll be near the tree." Rory looked at the blooms with new horror, the breathing petals, the way they turned their faces toward the light. She forced her legs forward, each step a negotiation. The crescent scar on her wrist throbbed where the cold had touched it. "There." Eva's whisper. A figure sat among the roots, where the great silver trunk split into a hollow like a throne. Silver hair spilled past her waist, catching the drifting lights. She did not look up, but her voice reached them across the clearing, soft and amused and certain, the way a person speaks who already knows the answer to every question asked. "You came through the stones," Isolde said. "Most turn back at the water. You're either brave, or you've nothing left to lose." She lifted her head, lavender eyes finding Rory's. "Which is it, child of two shores?"
created_at"2026-05-29T10:07:51.847Z" 5/29/2026, 10:07:51 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1086
moderation_latency153
generation_time38713
tokens_prompt1816
tokens_completion1555
native_tokens_prompt2695
native_tokens_completion2083
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"
usage0.06555
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01Lsxjn4BwPXGz5wzPjPaE7K"
is_byokfalse
latency1086
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-1780049271-BVzEdLmYILADUCSWNZHf"
session_id(null)
api_type"completions"
id"gen-1780049271-PGwI4rTAIHr1pUiuXTQ7"
upstream_id"msg_01Lsxjn4BwPXGz5wzPjPaE7K"
total_cost0.06555
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags14
adverbTagCount1
adverbTags
0"Eva edged around [around]"
dialogueSentences39
tagDensity0.359
leniency0.718
rawRatio0.071
effectiveRatio0.051
100.00% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1022
totalAiIsmAdverbs0
found(empty)
highlights(empty)
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)
55.97% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1022
totalAiIsms9
found
0
word"loomed"
count1
1
word"pulse"
count1
2
word"stomach"
count1
3
word"flicker"
count1
4
word"resolving"
count1
5
word"pulsed"
count1
6
word"chill"
count1
7
word"throbbed"
count1
8
word"whisper"
count1
highlights
0"loomed"
1"pulse"
2"stomach"
3"flicker"
4"resolving"
5"pulsed"
6"chill"
7"throbbed"
8"whisper"
66.67% Cliché density
Target: ≤1 cliche(s) per 800-word window
totalCliches2
maxInWindow2
found
0
label"eyes widened/narrowed"
count1
1
label"stomach dropped/sank"
count1
highlights
0"eyes narrowed"
1"stomach dropped"
100.00% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences64
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount0
narrationSentences64
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
maxSentenceWordsSeen42
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1029
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions16
unquotedAttributions0
matches(empty)
64.74% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions35
wordCount821
uniqueNames6
maxNameDensity1.71
worstName"Rory"
maxWindowNameDensity2.5
worstWindowName"Rory"
discoveredNames
Rory14
Eva7
Nyx10
Richmond1
Park1
Heartstone2
persons
0"Rory"
1"Eva"
2"Nyx"
places
0"Richmond"
1"Park"
globalScore0.647
windowScore0.833
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences46
glossingSentenceCount0
matches(empty)
0.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches3
per1kWords2.915
wordCount1029
matches
0"not any sky — neither blue nor amber but some shifting between, clouds moving fast"
1"neither blue nor"
2"not her reflection but a flicker of somewhere else: a vaulted ceiling, candlelight"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences88
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs39
mean26.38
std26.82
cv1.016
sampleLengths
015
113
235
327
42
52
635
74
890
98
1023
1117
123
1360
149
1531
162
1733
1812
192
203
2148
2219
236
243
2599
263
2722
2815
2910
3061
31103
3242
338
3422
3542
363
3760
3837
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount0
totalSentences64
matches(empty)
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount0
totalVerbs145
matches(empty)
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount7
semicolonCount0
flaggedSentences6
totalSentences88
ratio0.068
matches
0"The others followed — Eva clutching her coat shut, Nyx pouring through the gap like spilled ink."
1"Wildflowers crowded the clearing floor — bluebells beside foxgloves beside blooms Rory had no name for, petals the colour of bruised plums that breathed open and shut."
2"Beneath the birdsong — and there was birdsong, layered and strange, notes bending in ways no throat should manage — ran a low hum."
3"The trees thinned and the canopy opened to a sky that was not any sky — neither blue nor amber but some shifting between, clouds moving fast and high while the air below stayed dead calm."
4"They crossed at a place where flat stepping-stones broke the current, and the hum grew louder, resolving now into something almost like voices — a choir heard through water, words sliding apart before Rory could catch them."
5"Its trunk was silver-barked and broad as a house, its roots heaving up through the earth in coils thick as her body, and from its branches hung lanterns — no, not lanterns."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount817
adjectiveStacks0
stackExamples(empty)
adverbCount24
adverbRatio0.02937576499388005
lyAdverbCount5
lyAdverbRatio0.006119951040391677
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
mean11.69
std9.13
cv0.781
sampleLengths
015
15
28
313
419
53
611
716
82
92
106
1117
1212
134
1413
1528
1627
1722
184
194
209
217
227
2316
241
253
2624
2720
2816
294
305
3111
3216
334
342
352
3616
377
388
396
406
412
423
432
4423
4520
463
476
4813
496
64.77% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats8
diversityRatio0.4431818181818182
totalSentences88
uniqueOpeners39
60.61% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount1
totalSentences55
matches
0"Then the light changed."
ratio0.018
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount15
totalSentences55
matches
0"It curled away from her"
1"They all stopped."
2"It came up through the"
3"She was fairly certain it"
4"She glanced back the way"
5"Her stomach dropped."
6"She wanted to throttle them,"
7"They walked on."
8"She jerked back."
9"They crossed at a place"
10"Its trunk was silver-barked and"
11"She hadn't realised she'd stopped"
12"She forced her legs forward,"
13"She did not look up,"
14"She lifted her head, lavender"
ratio0.273
41.82% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount46
totalSentences55
matches
0"The standing stones loomed out"
1"Rory pressed her palm against"
2"The bark felt warm, alive,"
3"Nyx slid forward, a smear"
4"Rory ducked between the stones"
5"The others followed — Eva"
6"The cold of Richmond Park"
7"Sunlight slanted gold and thick"
8"Wildflowers crowded the clearing floor"
9"The grass underfoot gave off"
10"Rory crouched, touched a flower"
11"It curled away from her"
12"Nyx had gone still at"
13"They all stopped."
14"It came up through the"
15"The Heartstone at her throat"
16"Nyx drifted ahead, testing the"
17"A thread of pale moss"
18"Rory hadn't seen it a"
19"She was fairly certain it"
ratio0.836
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences55
matches(empty)
ratio0
56.28% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences33
technicalSentenceCount4
matches
0"The bark felt warm, alive, pulsing under her fingers in a slow rhythm that matched no heartbeat she knew."
1"Wildflowers crowded the clearing floor — bluebells beside foxgloves beside blooms Rory had no name for, petals the colour of bruised plums that breathed open an…"
2"The trees thinned and the canopy opened to a sky that was not any sky — neither blue nor amber but some shifting between, clouds moving fast and high while the …"
3"Beneath them the flowers grew thickest, and the scent here was overwhelming, honeyed and heavy, the kind that made Rory want to lie down in the grass and close …"
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags14
uselessAdditionCount0
matches(empty)
73.08% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags9
fancyCount3
fancyTags
0"Rory pressed (press)"
1"Eva whispered (whisper)"
2"Nyx murmured (murmur)"
dialogueSentences39
tagDensity0.231
leniency0.462
rawRatio0.333
effectiveRatio0.154
79.4641%