Run: 2026-05-31-01KSYX9DJ0QT6QZQDG1FJWRMWS

Run Details

Model:
Claude Opus 4.8 (Reasoning, High)
Test:
Bad Writing Habits
Scenario:
Fantasy: entering an ancient ruin
Duration:
40.5s
Cost:
$0.068150
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
100.00% Adverbs in dialogue tags (details)
85.55% AI-ism adverb frequency (details)
100.00% AI-ism character names (details)
100.00% AI-ism location names (details)
80.73% 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)
95.45% Name drop frequency (details)
0.00% 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)
99.87% Passive voice overuse (details)
100.00% Past progressive (was/were + -ing) overuse (details)
0.00% Em-dash & semicolon overuse (details)
94.13% Purple prose (modifier overload) (details)
100.00% Repeated phrase echo (details)
100.00% Sentence length variance (details)
87.95% Sentence opener variety (details)
61.73% Adverb-first sentence starts (details)
100.00% Pronoun-first sentence starts (details)
52.59% Subject-first sentence starts (details)
92.59% Subordinate conjunction sentence starts (details)
68.97% Technical jargon density (details)
66.18% Useless dialogue additions (details)
61.76% Dialogue tag variety (said vs. fancy) (details)
84.9168% 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 rose out of the bracken like the ribs of some long-dead beast, weathered oak gone silver-grey with age. Aurora stopped between two of them, her hand still half-raised from pushing aside a curtain of ivy. "This isn't Richmond Park anymore," she breathed. Behind her, Nyx slid through the gap in the stones, their shadow-form rippling at the edges where the light caught them wrong. "No. We crossed the threshold three steps ago. Couldn't you feel it?" She had. A pressure behind her ears, like descending too fast in a lift, and then nothing — a silence so complete it pressed against her skin. The traffic noise from the A-road, the distant aircraft, the city's constant low hum, all of it gone. In its place came a sound she couldn't name. Bells, maybe. Or water over glass. "Where are we?" "Between." Nyx drifted forward, head tilting as though listening to something she couldn't hear. "Not Earth. Not the Fae Courts. A pocket sewn into the seam where they meet." The third member of their party, a wiry man named Caleb who'd talked his way along by claiming he knew the Grove's location, hadn't spoken since they'd stepped through. Now he crouched and pressed two fingers to the ground. "The grass," he muttered. "It's warm." Aurora knelt beside him. He was right. The earth held a heat that had no business there in November, and when she looked closer she saw the wildflowers — not the tired survivors of an English autumn but blooms in full riot. Foxgloves taller than her waist, their bells faintly luminous. Clusters of something blue and star-shaped that turned, slow as sunflowers, to follow her movement. She pulled her hand back. "They're watching us." "Everything here watches," Nyx said. "Touch nothing you don't intend to keep." They moved deeper. The light changed as they walked, though Aurora couldn't find its source — no sun hung in the sky, only a soft amberish glow diffused through the canopy, the same warm gold she'd glimpsed once in a dream she'd rather forget. The trees grew stranger the further in they went. Oaks at first, ordinary enough, but their bark soon gave way to something pale and smooth, almost like bone, and their leaves rang faintly when the windless air stirred them. Caleb laughed, the sound too loud, too sharp. "This is it. This is what they don't tell you about. You could sell a single one of these leaves for—" "Don't." Aurora caught his wrist before he could reach up. The crescent scar on her own wrist pressed against his skin. "You heard Nyx." He shook her off but didn't reach again. The path — if it was a path, a ribbon of moss that seemed to firm beneath their feet only where they meant to step — wound between roots the size of fallen pillars. Aurora trailed her fingers along one and felt it pulse, a slow throb like a heartbeat, warm and patient and old. She thought of the pendant at her throat, the Heartstone, and was unsurprised to find it warm too, though no Hel portal lay near here. Different magic. The grove answered it anyway. "Listen," Nyx said. She stopped. Beneath the bell-chime of the leaves came running water, and under that, faint, a melody. Voices, or the memory of voices, threaded so fine she couldn't tell if she heard them with her ears or somewhere behind her sternum. "Singing?" Caleb's earlier bravado had thinned. "Who's singing?" "No one." Nyx's glowing eyes dimmed and brightened. "And everyone who ever sang here. The grove keeps sound the way amber keeps insects. Step carefully. Some songs will try to keep you, too." They came out into a clearing. Aurora forgot, for a moment, how to breathe. A pool lay at its centre, perfectly round, its surface so still it threw back the amber light like beaten gold. Around it the wildflowers grew thick enough to hide the ground entirely, and over it leaned a single tree unlike any she'd seen — its trunk braided from a dozen smaller trunks, its branches hung with fruit that glowed soft as paper lanterns. Pale moths drifted between the boughs, leaving faint trails of light that hung in the air for seconds after they'd passed. "It's beautiful," she whispered. "It's a trap," Nyx countered, though even their windswept voice held something like reverence. "Beauty here is rarely just beauty." Caleb had already crossed half the distance to the pool. "There's something in the water." "Caleb—" "No, look." He pointed. "Faces. There are faces." Aurora came up beside him against her better judgement and looked down. The water showed no reflection of the tree, no glowing fruit, no amber sky. Instead it showed a face — her face, but younger, frightened, a bruise blooming across one cheek. Evan's hand fisted in her hair just out of frame. She jerked back as if scalded. "That's not real," she said, more to herself than to anyone. "It was." A new voice, soft as fallen snow, came from across the clearing. "The pool shows what the heart still carries. It does not lie. None of us here can." Isolde stood among the foxgloves where no one had stood a moment before. Silver hair pooled around her, lavender eyes reflecting the lantern-fruit, and where she'd walked the flowers were undisturbed — no bent stems, no crushed petals, no footprints at all. Aurora's hand drifted toward the moonsilver dagger at her hip before she caught herself. "You came," Isolde said. "Though you came with more company than I foresaw." Her gaze settled on Caleb, who'd gone very still. "And one who came to steal. The grove knows the shape of greed. It has eaten such hearts before." The fruit overhead pulsed brighter, and from somewhere in the braided tree came a sound like a slow, considering inhale. Aurora stepped between the seer and Caleb. "He's with me. Whatever the grove wants, it goes through me first." A smile touched the corner of Isolde's mouth, faint as the moths' light. "Spoken like someone who already knows the price of this place." She turned, and the flowers parted before her. "Come. We have little time, and the Veil thins more each night."
created_at"2026-05-31T11:39:12.844Z" 5/31/2026, 11:39:12 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2671
moderation_latency(null)
generation_time40431
tokens_prompt1816
tokens_completion1619
native_tokens_prompt2695
native_tokens_completion2187
native_tokens_completion_images(null)
native_tokens_reasoning47
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"
usage0.06815
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01H45kf6rvD264f9w1kBAVC3"
is_byokfalse
latency1340
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-1780227552-OxkrCtDAUndD5tXmuqv3"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780227552-QlVCqjSfbejrgLMNMNOd"
upstream_id"msg_01H45kf6rvD264f9w1kBAVC3"
total_cost0.06815
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
totalTags17
adverbTagCount0
adverbTags(empty)
dialogueSentences34
tagDensity0.5
leniency1
rawRatio0
effectiveRatio0
85.55% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1038
totalAiIsmAdverbs3
found
0
adverb"carefully"
count1
1
adverb"perfectly"
count1
2
adverb"very"
count1
highlights
0"carefully"
1"perfectly"
2"very"
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)
80.73% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1038
totalAiIsms4
found
0
word"silence"
count1
1
word"pulse"
count1
2
word"throb"
count1
3
word"pulsed"
count1
highlights
0"silence"
1"pulse"
2"throb"
3"pulsed"
100.00% Cliché density
Target: ≤1 cliche(s) per 800-word window
totalCliches1
maxInWindow1
found
0
label"hung in the air"
count1
highlights
0"hung in the air"
100.00% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences65
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount1
narrationSentences65
filterMatches(empty)
hedgeMatches
0"seemed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences83
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
totalWords1046
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions15
unquotedAttributions0
matches(empty)
95.45% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions29
wordCount825
uniqueNames9
maxNameDensity1.09
worstName"Aurora"
maxWindowNameDensity1.5
worstWindowName"Nyx"
discoveredNames
Nyx6
Caleb6
Grove1
Aurora9
November1
English1
Heartstone1
Hel1
Isolde3
persons
0"Nyx"
1"Caleb"
2"Grove"
3"Aurora"
4"Isolde"
places
0"November"
globalScore0.955
windowScore1
0.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences47
glossingSentenceCount3
matches
0"as though listening to something she couldn't hear"
1"moss that seemed to firm beneath their feet only where they meant to step — wound between roots the size of fallen pillars"
2"something like reverence"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.956
wordCount1046
matches
0"not the tired survivors of an English autumn but blooms in full riot"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences83
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs37
mean28.27
std25.14
cv0.889
sampleLengths
038
17
234
360
43
529
639
76
871
93
1012
1183
128
1321
1424
158
1687
173
1841
198
2033
216
2293
234
2420
2515
261
278
2859
2911
3031
3156
3241
3320
3419
3513
3631
99.87% Passive voice overuse
Target: ≤2% passive sentences
passiveCount1
totalSentences65
matches
0"was unsurprised"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount0
totalVerbs140
matches(empty)
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount8
semicolonCount0
flaggedSentences7
totalSentences83
ratio0.084
matches
0"A pressure behind her ears, like descending too fast in a lift, and then nothing — a silence so complete it pressed against her skin."
1"The earth held a heat that had no business there in November, and when she looked closer she saw the wildflowers — not the tired survivors of an English autumn but blooms in full riot."
2"The light changed as they walked, though Aurora couldn't find its source — no sun hung in the sky, only a soft amberish glow diffused through the canopy, the same warm gold she'd glimpsed once in a dream she'd rather forget."
3"The path — if it was a path, a ribbon of moss that seemed to firm beneath their feet only where they meant to step — wound between roots the size of fallen pillars."
4"Around it the wildflowers grew thick enough to hide the ground entirely, and over it leaned a single tree unlike any she'd seen — its trunk braided from a dozen smaller trunks, its branches hung with fruit that glowed soft as paper lanterns."
5"Instead it showed a face — her face, but younger, frightened, a bruise blooming across one cheek."
6"Silver hair pooled around her, lavender eyes reflecting the lantern-fruit, and where she'd walked the flowers were undisturbed — no bent stems, no crushed petals, no footprints at all."
94.13% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount835
adjectiveStacks0
stackExamples(empty)
adverbCount39
adverbRatio0.046706586826347304
lyAdverbCount6
lyAdverbRatio0.00718562874251497
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences83
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences83
mean12.6
std9.43
cv0.748
sampleLengths
021
117
27
322
412
52
625
718
89
92
104
113
1214
1315
1429
1510
164
172
184
193
2035
219
2215
235
243
255
267
273
2841
299
3030
318
3221
3310
3411
353
368
3734
3821
3925
402
415
423
432
4415
4524
466
472
488
4925
87.95% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats2
diversityRatio0.5421686746987951
totalSentences83
uniqueOpeners45
61.73% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount1
totalSentences54
matches
0"Instead it showed a face"
ratio0.019
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount10
totalSentences54
matches
0"He was right."
1"She pulled her hand back."
2"They moved deeper."
3"He shook her off but"
4"She thought of the pendant"
5"They came out into a"
6"She jerked back as if"
7"she said, more to herself"
8"Her gaze settled on Caleb,"
9"She turned, and the flowers"
ratio0.185
52.59% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount44
totalSentences54
matches
0"The standing stones rose out"
1"Aurora stopped between two of"
2"A pressure behind her ears,"
3"The traffic noise from the"
4"Nyx drifted forward, head tilting"
5"The third member of their"
6"Aurora knelt beside him."
7"He was right."
8"The earth held a heat"
9"Foxgloves taller than her waist,"
10"Clusters of something blue and"
11"She pulled her hand back."
12"They moved deeper."
13"The light changed as they"
14"The trees grew stranger the"
15"Oaks at first, ordinary enough,"
16"Caleb laughed, the sound too"
17"Aurora caught his wrist before"
18"The crescent scar on her"
19"He shook her off but"
ratio0.815
92.59% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount1
totalSentences54
matches
0"Now he crouched and pressed"
ratio0.019
68.97% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences29
technicalSentenceCount3
matches
0"The earth held a heat that had no business there in November, and when she looked closer she saw the wildflowers — not the tired survivors of an English autumn …"
1"The path — if it was a path, a ribbon of moss that seemed to firm beneath their feet only where they meant to step — wound between roots the size of fallen pill…"
2"Around it the wildflowers grew thick enough to hide the ground entirely, and over it leaned a single tree unlike any she'd seen — its trunk braided from a dozen…"
66.18% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags17
uselessAdditionCount2
matches
0"she said, more to herself than to anyone"
1"She turned, and the flowers parted before her"
61.76% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags7
fancyCount3
fancyTags
0"she breathed (breathe)"
1"he muttered (mutter)"
2"she whispered (whisper)"
dialogueSentences34
tagDensity0.206
leniency0.412
rawRatio0.429
effectiveRatio0.176
84.9168%