Run: 2026-05-29-01KSSJZBYY1BTWFQNSRED3CH6W

Run Details

Model:
Claude Opus 4.8 (Reasoning)
Test:
Bad Writing Habits
Scenario:
Fantasy: entering an ancient ruin
Duration:
38.5s
Cost:
$0.062150
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
100.00% Adverbs in dialogue tags (details)
85.13% AI-ism adverb frequency (details)
100.00% AI-ism character names (details)
100.00% AI-ism location names (details)
30.62% AI-ism word frequency (details)
100.00% Cliché density (details)
100.00% Emotion telling (show vs. tell) (details)
57.14% Filter word density (details)
100.00% Gibberish response detection (details)
100.00% Markdown formatting overuse (details)
100.00% Missing dialogue indicators (quotation marks) (details)
86.71% Name drop frequency (details)
18.42% 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)
100.00% Purple prose (modifier overload) (details)
100.00% Repeated phrase echo (details)
100.00% Sentence length variance (details)
89.37% Sentence opener variety (details)
0.00% Adverb-first sentence starts (details)
100.00% Pronoun-first sentence starts (details)
34.47% Subject-first sentence starts (details)
0.00% Subordinate conjunction sentence starts (details)
53.57% Technical jargon density (details)
86.54% Useless dialogue additions (details)
100.00% Dialogue tag variety (said vs. fancy) (details)
78.0660% 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 before anything else made sense—great slabs of weathered oak rising from the bracken like the ribs of some buried beast, each one taller than a man and ringed with moss that glowed faint green at its roots. "This wasn't here yesterday." Rory pressed her palm against the nearest stone. The bark hummed beneath her skin, warm where the autumn air should have left it cold. "I walked this path a hundred times when Eva still lived in Richmond. There was nothing but oaks and dog walkers." "That's rather the point of a hidden grove, isn't it." Nyx slid between two stones, their shadow-form thinning to a smear of darkness before snapping solid on the other side. "You don't find it. It allows itself to be found." Rory stepped through after them. The cold dropped away. Behind her, London hummed—traffic, sirens, the distant churn of a city that never quite slept—and then, between one footfall and the next, silence swallowed it whole. She turned. The gap between the stones showed only more grove, more wildflowers, no sign of the park path she'd walked in on. "Don't." Nyx caught her wrist before she could reach back through. "The way out isn't where the way in was. It never is." "Comforting." She pulled the Heartstone pendant from beneath her collar. It sat dark and quiet against her sternum, no warmth, no pulse. Whatever this place was, it touched neither Hel nor the rift points the Wardens watched. "It's gone still. The pendant. Like it can't read this place at all." "Because this place doesn't belong to anyone's map." They walked. The grove opened wider than the ring of stones had any right to contain. Wildflowers carpeted the ground in colours Rory had no names for—violets that shaded into gold at their edges, blooms the deep crimson of arterial blood, petals that seemed to drink the light and hold it. When her boot crushed one, it released a scent like crushed honey and ozone, and the bloom righted itself the moment she lifted her foot, unbruised. "They're healing." She crouched, watching a second flower mend. "I stepped right on it and it just—" "Time moves differently here." Nyx hadn't slowed. Their violet eyes scanned the canopy overhead, where branches knit so tightly the sky showed only in fractured slivers. "An hour inside can be a minute out there. Or a week. The flowers don't mend. We simply move slow enough to watch them grow." Rory stood. A chill walked the length of her spine. "How long have we been in here?" "Does it matter? You came for an answer. The answer doesn't keep clocks." Deeper in, the light changed. There was no sun—Rory looked and found none, only a diffuse glow that seemed to seep from the air itself, the colour of late afternoon held permanently in amber. Birdsong threaded through the trees, but when she stopped to listen, the notes ran backward, rising where they ought to fall, looping in patterns that prickled at the base of her skull. "Don't follow the song." Nyx's whisper barely carried. "It's not for ears like yours." "Then what's it for?" "Things with more patience than sense." A stream cut across their path, water so clear it seemed not to be there at all, only a ribbon of distortion over silver stones. Rory knelt and cupped a handful. It weighed nothing. When she opened her fingers, the water didn't fall—it lifted, breaking into beads that drifted upward and vanished into the canopy like reversed rain. "Don't drink it." Nyx didn't even look back this time. "I wasn't going to." She wiped her dry palm on her jeans. "Why does everything here have a rule attached?" "Because everything here will kill you, given the chance and a loophole. The Fae built their realms on bargains. Even the water expects something in return." The Fae blade sat sheathed at her hip, and as they crossed the stream it warmed against her thigh—no, the opposite. It went colder, cold enough to bite through denim, the moonsilver drinking in something she couldn't see. She rested her hand on the hilt and the chill steadied her, anchored her, a single honest thing in a place that bent every truth it touched. On the far bank, the trees gave way. The clearing held a tree unlike the rest—an oak so vast its trunk could have housed her flat three times over, bark gnarled into faces that shifted when she looked away and stilled when she looked back. Lanterns hung from its lower branches, though no flame burned inside them; they held captured light, pale and lavender, swaying though no wind moved. "We're close." Nyx had gone very still, their form flickering at the edges. "She'll know we're here. She knew before we crossed the stones." Rory's breath fogged in air that had no business being cold. "You said you'd been here before." "Once." The shadow's voice frayed. "Long before this face. Long before yours. Places like this remember everyone who passes through. That's what makes them dangerous." They turned, and for the first time the easy mockery had drained out of them. "It remembers me as something I'd rather it forgot." A footstep sounded behind her—except there were no footsteps. Rory spun, hand already on the blade, and found only flattened flowers springing slowly back to upright. No prints in the soft earth. None at all. "She walks ahead of us." Nyx hadn't moved. "Or behind. The Seer doesn't leave a trail to follow. You'll only ever find her where she chooses to be found." Rory's pulse hammered against the cold weight of the pendant. The lanterns swayed harder now, their lavender light pulling toward the great oak's roots, where the shadows pooled deep and the gnarled faces seemed to lean inward, listening. "Then we go to the tree." She drew a breath that tasted of honey and lightning. "And we hope she's decided to be found."
created_at"2026-05-29T10:02:45.609Z" 5/29/2026, 10:02:45 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1444
moderation_latency(null)
generation_time38463
tokens_prompt1816
tokens_completion1503
native_tokens_prompt2695
native_tokens_completion1947
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"
usage0.06215
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_012Pw8ws4LMbYNK48LJn7UPf"
is_byokfalse
latency1444
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-1780048965-2ZkPB5xfS4rRqO8IhEby"
session_id(null)
api_type"completions"
id"gen-1780048965-jFUhe3cKytrgsXztDhyc"
upstream_id"msg_012Pw8ws4LMbYNK48LJn7UPf"
total_cost0.06215
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
totalTags13
adverbTagCount0
adverbTags(empty)
dialogueSentences33
tagDensity0.394
leniency0.788
rawRatio0
effectiveRatio0
85.13% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1009
totalAiIsmAdverbs3
found
0
adverb"tightly"
count1
1
adverb"very"
count1
2
adverb"slowly"
count1
highlights
0"tightly"
1"very"
2"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)
30.62% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1009
totalAiIsms14
found
0
word"churn"
count1
1
word"footfall"
count1
2
word"silence"
count1
3
word"comforting"
count1
4
word"warmth"
count1
5
word"pulse"
count2
6
word"scanned"
count1
7
word"fractured"
count1
8
word"chill"
count2
9
word"whisper"
count1
10
word"footsteps"
count1
11
word"weight"
count1
highlights
0"churn"
1"footfall"
2"silence"
3"comforting"
4"warmth"
5"pulse"
6"scanned"
7"fractured"
8"chill"
9"whisper"
10"footsteps"
11"weight"
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
narrationSentences50
matches(empty)
57.14% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount3
narrationSentences50
filterMatches(empty)
hedgeMatches
0"seemed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences69
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen44
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1000
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions4
unquotedAttributions0
matches(empty)
86.71% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions21
wordCount711
uniqueNames7
maxNameDensity1.27
worstName"Rory"
maxWindowNameDensity2
worstWindowName"Rory"
discoveredNames
Rory9
London1
Heartstone1
Hel1
Wardens1
Nyx7
Fae1
persons
0"Rory"
1"Wardens"
2"Nyx"
places
0"London"
globalScore0.867
windowScore1
18.42% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences38
glossingSentenceCount2
matches
0"petals that seemed to drink the light and hold it"
1"glow that seemed to seep from the air itself, the colour of late afternoon held permanently in amber"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords1
wordCount1000
matches
0"neither Hel nor"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences69
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs33
mean30.3
std20.95
cv0.691
sampleLengths
043
149
240
35
453
523
650
78
82
975
1017
1151
1217
1313
1466
1514
164
176
1858
1910
2020
2126
2265
238
2461
2524
2617
2749
2826
299
3029
3138
3224
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount0
totalSentences50
matches(empty)
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount0
totalVerbs138
matches(empty)
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount9
semicolonCount1
flaggedSentences9
totalSentences69
ratio0.13
matches
0"The standing stones came into view before anything else made sense—great slabs of weathered oak rising from the bracken like the ribs of some buried beast, each one taller than a man and ringed with moss that glowed faint green at its roots."
1"Behind her, London hummed—traffic, sirens, the distant churn of a city that never quite slept—and then, between one footfall and the next, silence swallowed it whole."
2"Wildflowers carpeted the ground in colours Rory had no names for—violets that shaded into gold at their edges, blooms the deep crimson of arterial blood, petals that seemed to drink the light and hold it."
3"There was no sun—Rory looked and found none, only a diffuse glow that seemed to seep from the air itself, the colour of late afternoon held permanently in amber."
4"When she opened her fingers, the water didn't fall—it lifted, breaking into beads that drifted upward and vanished into the canopy like reversed rain."
5"The Fae blade sat sheathed at her hip, and as they crossed the stream it warmed against her thigh—no, the opposite."
6"The clearing held a tree unlike the rest—an oak so vast its trunk could have housed her flat three times over, bark gnarled into faces that shifted when she looked away and stilled when she looked back."
7"Lanterns hung from its lower branches, though no flame burned inside them; they held captured light, pale and lavender, swaying though no wind moved."
8"A footstep sounded behind her—except there were no footsteps."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount721
adjectiveStacks0
stackExamples(empty)
adverbCount28
adverbRatio0.038834951456310676
lyAdverbCount9
lyAdverbRatio0.012482662968099861
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences69
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences69
mean14.49
std9.73
cv0.672
sampleLengths
043
112
216
321
430
510
65
74
826
92
1021
1111
1212
1310
1412
1515
1613
178
182
1914
2035
2126
229
238
247
2519
2625
272
288
297
3013
315
3229
3332
348
356
364
376
3825
396
403
4124
4210
4312
448
4526
4621
4717
4827
498
89.37% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats0
diversityRatio0.5362318840579711
totalSentences69
uniqueOpeners37
0.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount0
totalSentences47
matches(empty)
ratio0
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount10
totalSentences47
matches
0"She pulled the Heartstone pendant"
1"It sat dark and quiet"
2"She crouched, watching a second"
3"Their violet eyes scanned the"
4"It weighed nothing."
5"She wiped her dry palm"
6"It went colder, cold enough"
7"She rested her hand on"
8"They turned, and for the"
9"She drew a breath that"
ratio0.213
34.47% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount40
totalSentences47
matches
0"The standing stones came into"
1"Rory pressed her palm against"
2"The bark hummed beneath her"
3"Nyx slid between two stones,"
4"Rory stepped through after them."
5"The cold dropped away."
6"The gap between the stones"
7"Nyx caught her wrist before"
8"She pulled the Heartstone pendant"
9"It sat dark and quiet"
10"Whatever this place was, it"
11"The grove opened wider than"
12"Wildflowers carpeted the ground in"
13"She crouched, watching a second"
14"Nyx hadn't slowed"
15"Their violet eyes scanned the"
16"A chill walked the length"
17"Birdsong threaded through the trees,"
18"Nyx's whisper barely carried"
19"A stream cut across their"
ratio0.851
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences47
matches(empty)
ratio0
53.57% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences24
technicalSentenceCount3
matches
0"The standing stones came into view before anything else made sense—great slabs of weathered oak rising from the bracken like the ribs of some buried beast, each…"
1"Wildflowers carpeted the ground in colours Rory had no names for—violets that shaded into gold at their edges, blooms the deep crimson of arterial blood, petals…"
2"There was no sun—Rory looked and found none, only a diffuse glow that seemed to seep from the air itself, the colour of late afternoon held permanently in amber…"
86.54% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags13
uselessAdditionCount1
matches
0"Nyx had, their form flickering at the edges"
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags1
fancyCount1
fancyTags
0"Rory pressed (press)"
dialogueSentences33
tagDensity0.03
leniency0.061
rawRatio1
effectiveRatio0.061
78.0660%