Run: 2026-06-01-01KT1HS7NVJ2AE5K0ZPV8BXZ8B

Run Details

Model:
Claude Opus 4.8 (Reasoning, Low)
Test:
Bad Writing Habits
Scenario:
Fantasy: entering an ancient ruin
Duration:
45.2s
Cost:
$0.066425
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)
52.70% AI-ism word frequency (details)
100.00% Cliché density (details)
100.00% Emotion telling (show vs. tell) (details)
79.83% Filter word density (details)
100.00% Gibberish response detection (details)
100.00% Markdown formatting overuse (details)
100.00% Missing dialogue indicators (quotation marks) (details)
100.00% Name drop frequency (details)
30.95% 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)
80.80% Sentence opener variety (details)
100.00% Adverb-first sentence starts (details)
100.00% Pronoun-first sentence starts (details)
28.97% Subject-first sentence starts (details)
0.00% Subordinate conjunction sentence starts (details)
47.62% Technical jargon density (details)
91.67% Useless dialogue additions (details)
98.72% Dialogue tag variety (said vs. fancy) (details)
83.7082% 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 the bracken, their bark silvered with frost that had no business clinging in late spring. "That's it," Rory said. She pressed her palm against the nearest oak. The wood thrummed under her skin, a pulse too slow and too deep to be her own heartbeat. "Has to be." Behind her, Nyx flowed across the ground rather than walked, their shadow-form thinning where the dappled light struck it. "The air bends here. Can you feel it pulling?" She could. Each step toward the gap between the stones met resistance, like wading into a tide she couldn't see. The Heartstone hung cold against her sternum—no warmth, no pulse. Whatever lay ahead, it wasn't Hel. Eva stumbled into her back. "Why've we stopped? It's just a clearing." "It's not." Rory took her hand and pulled her through. The world changed mid-stride. The grey London afternoon vanished. Sound arrived first—a layered hum of insects she didn't recognise, a wind chime made of no metal she could name, water running somewhere close and bright. Then the light. It fell golden and thick as honey, slanting from a sky the colour of bruised peaches, and it had no source she could find. No sun. Just radiance, everywhere and from nowhere. "Oh," Eva breathed. "Oh, hell." Wildflowers carpeted the ground in colours that hurt to look at directly—blues that shifted toward violet when she turned her head, reds that seemed to glow from inside. They grew in defiance of season, snowdrops blooming beside full summer roses beside something with petals like spun glass. When Rory's boot brushed them, they chimed, faint and crystalline, and folded shut. "Don't touch anything," Nyx said. They'd gone solid now, their humanoid silhouette sharp against the brightness, violet eyes the only familiar thing in all of it. "This place keeps its own accounts." "Cheerful." Eva crouched over a patch of luminous moss, hands tucked behind her back like a child told not to grab. "How do you know that?" "Because I've spent four hundred years in the spaces between places. I know hungry ground when I stand on it." Rory walked deeper. She had to. The path—if it was a path—wound between trees that climbed too high, their canopies lost in the amber haze. Their trunks twisted in slow spirals, and where the bark split, light leaked out, soft and pulsing. She pressed her hand to one and felt it breathe. "Rory." Eva's voice tightened. "Your footprints." She looked back. The flowers behind her had already risen, unbruised, the grass standing tall as if no one had passed. No trail. No mark of them at all. "The grove doesn't remember us," Nyx said. "That's how it stays hidden. Keep close. If we lose each other in here—" "We won't." But the words felt thin. The trees crowded nearer with each step, and the light dimmed by degrees, going from honey to old gold to something dusk-coloured, though no time seemed to pass. Rory checked her watch. The second hand trembled and held still, refusing to commit to a direction. "My watch stopped." "Of course it did." Nyx's whisper-voice carried a thread of dry amusement. "Time runs sideways here. An hour inside, a heartbeat out. Or a year. The Fae never built clocks. Why would they, when they own the river that all clocks try to measure?" Eva laughed, brittle. "You could've mentioned the year part before we walked in." "Would you have stayed home?" "No." "Then it changes nothing." They came to water. A stream cut through the grove, but it ran wrong—uphill, climbing over smooth stones toward a slope that vanished into mist. The water glowed faintly, threading silver light through the gloom, and small shapes moved within it, darting, too fast to name. Rory knelt at the bank. Her reflection looked back, and then it didn't—the face in the water aged, hollowed, hair gone white, eyes sunk dark, before the current scattered it. She rocked back on her heels, breath caught hard in her throat. "Don't look long," Nyx said, close now. "Fae water shows what it pleases. Not always lies. Not always truth." "That was me." Her voice came out smaller than she wanted. "Old. Or—" "Or a warning. Or bait. Move on." The crescent scar on her wrist had gone cold. She covered it with her thumb and stood. The trees thinned ahead, opening toward a glade where the light gathered itself again, brighter than before, almost white at its centre. Birdsong threaded the air—except the birds, when one crossed her vision, had too many wings and trailed sparks like embers off a struck flint. One landed on a low branch and turned its head to watch them with eyes set in a ring all around its skull. It opened a beak and sang in a voice that was almost a word, almost her name. Eva grabbed her arm. "Did it just—" "Don't answer it." Nyx stepped between them and the bird, shadow rising off their shoulders like smoke. "Names have weight here. Give one freely and you've given a leash." The bird tilted, considered, and burst apart into a dozen sparks that drifted up and winked out. They walked into the glade. At its heart stood a ring of smaller stones, and within it, the air shimmered—a distortion, a heat-haze with no heat, and through it Rory glimpsed shapes that shouldn't have fit: a doorway, a corridor of trees stretching impossibly far, a glimmer of distant towers. "The Veil's thin here," Nyx murmured. "Thinner than anywhere on Earth I've found. You could almost step through. Almost." They turned, and for the first time something like caution crossed their features. "Which means we are exactly where the Seer wants to be found. And exactly where we should be most careful." Eva turned a slow circle, mouth open, taking in the impossible sky and the breathing trees and the river that climbed. "It's beautiful," she said. "It's awful. I can't decide which." "Both," Rory said. The wonder of it sat in her chest beside the cold dread, neither one willing to give ground. She set her hand on the hilt of the Fae blade at her hip and found it colder than ever, drinking the strangeness in. "Let's find her."
created_at"2026-06-01T12:15:51.503Z" 6/1/2026, 12:15:51 PM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4314
moderation_latency(null)
generation_time45204
tokens_prompt1816
tokens_completion1582
native_tokens_prompt2695
native_tokens_completion2118
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"
usage0.066425
router(null)
provider_responses
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endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01JNJXLsiEDDGbVxuJi2UH1G"
is_byokfalse
latency4292
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-1780316151-WTojY1vqzo28zZH9UVw6"
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api_type"completions"
id"gen-1780316151-Hz69NCq7ZUGGPgtYY6M8"
upstream_id"msg_01JNJXLsiEDDGbVxuJi2UH1G"
total_cost0.066425
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
totalTags15
adverbTagCount0
adverbTags(empty)
dialogueSentences39
tagDensity0.385
leniency0.769
rawRatio0
effectiveRatio0
100.00% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1057
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)
52.70% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1057
totalAiIsms10
found
0
word"pulse"
count2
1
word"warmth"
count1
2
word"crystalline"
count1
3
word"familiar"
count1
4
word"trembled"
count1
5
word"whisper"
count1
6
word"gloom"
count1
7
word"weight"
count1
8
word"shimmered"
count1
highlights
0"pulse"
1"warmth"
2"crystalline"
3"familiar"
4"trembled"
5"whisper"
6"gloom"
7"weight"
8"shimmered"
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
narrationSentences68
matches(empty)
79.83% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount2
narrationSentences68
filterMatches
0"watch"
hedgeMatches
0"seemed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences92
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen47
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1048
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions13
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions27
wordCount810
uniqueNames8
maxNameDensity0.99
worstName"Rory"
maxWindowNameDensity1.5
worstWindowName"Nyx"
discoveredNames
Nyx7
Heartstone1
Hel1
London1
Wildflowers1
Rory8
Eva7
Fae1
persons
0"Nyx"
1"Heartstone"
2"Wildflowers"
3"Rory"
4"Eva"
places
0"London"
globalScore1
windowScore1
30.95% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences42
glossingSentenceCount2
matches
0"reds that seemed to glow from inside"
1"something like caution crossed their feature"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount1048
matches(empty)
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences92
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs39
mean26.87
std21.69
cv0.807
sampleLengths
022
133
228
336
412
510
64
766
85
960
1032
1126
1220
1352
146
1529
1621
172
1850
193
2044
2113
225
231
244
2576
2612
2719
2813
297
3017
3186
327
3329
3417
3550
3652
3731
3848
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount0
totalSentences68
matches(empty)
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount0
totalVerbs155
matches(empty)
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount9
semicolonCount0
flaggedSentences8
totalSentences92
ratio0.087
matches
0"The Heartstone hung cold against her sternum—no warmth, no pulse."
1"Sound arrived first—a layered hum of insects she didn't recognise, a wind chime made of no metal she could name, water running somewhere close and bright."
2"Wildflowers carpeted the ground in colours that hurt to look at directly—blues that shifted toward violet when she turned her head, reds that seemed to glow from inside."
3"The path—if it was a path—wound between trees that climbed too high, their canopies lost in the amber haze."
4"A stream cut through the grove, but it ran wrong—uphill, climbing over smooth stones toward a slope that vanished into mist."
5"Her reflection looked back, and then it didn't—the face in the water aged, hollowed, hair gone white, eyes sunk dark, before the current scattered it."
6"Birdsong threaded the air—except the birds, when one crossed her vision, had too many wings and trailed sparks like embers off a struck flint."
7"At its heart stood a ring of smaller stones, and within it, the air shimmered—a distortion, a heat-haze with no heat, and through it Rory glimpsed shapes that shouldn't have fit: a doorway, a corridor of trees stretching impossibly far, a glimmer of distant towers."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount824
adjectiveStacks0
stackExamples(empty)
adverbCount25
adverbRatio0.03033980582524272
lyAdverbCount4
lyAdverbRatio0.0048543689320388345
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences92
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences92
mean11.39
std8.85
cv0.777
sampleLengths
022
14
28
318
43
519
69
72
818
910
106
115
127
1310
144
155
1626
173
1824
192
206
213
222
2328
2419
2513
265
2721
286
2921
305
3120
323
333
3419
3517
3610
374
382
393
4018
412
426
437
4414
452
465
4728
484
4913
80.80% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats4
diversityRatio0.5108695652173914
totalSentences92
uniqueOpeners47
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount2
totalSentences58
matches
0"Then the light."
1"Just radiance, everywhere and from"
ratio0.034
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount17
totalSentences58
matches
0"She pressed her palm against"
1"It fell golden and thick"
2"They grew in defiance of"
3"They'd gone solid now, their"
4"She had to."
5"Their trunks twisted in slow"
6"She pressed her hand to"
7"She looked back."
8"They came to water."
9"Her reflection looked back, and"
10"She rocked back on her"
11"Her voice came out smaller"
12"She covered it with her"
13"It opened a beak and"
14"They walked into the glade."
15"They turned, and for the"
16"She set her hand on"
ratio0.293
28.97% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount50
totalSentences58
matches
0"The standing stones came into"
1"She pressed her palm against"
2"The wood thrummed under her"
3"Each step toward the gap"
4"The Heartstone hung cold against"
5"Whatever lay ahead, it wasn't"
6"Eva stumbled into her back."
7"Rory took her hand and"
8"The world changed mid-stride."
9"The grey London afternoon vanished."
10"Sound arrived first—a layered hum"
11"It fell golden and thick"
12"Wildflowers carpeted the ground in"
13"They grew in defiance of"
14"They'd gone solid now, their"
15"Eva crouched over a patch"
16"Rory walked deeper."
17"She had to."
18"The path—if it was a"
19"Their trunks twisted in slow"
ratio0.862
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences58
matches(empty)
ratio0
47.62% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences30
technicalSentenceCount4
matches
0"The path—if it was a path—wound between trees that climbed too high, their canopies lost in the amber haze."
1"The flowers behind her had already risen, unbruised, the grass standing tall as if no one had passed."
2"A stream cut through the grove, but it ran wrong—uphill, climbing over smooth stones toward a slope that vanished into mist."
3"Eva turned a slow circle, mouth open, taking in the impossible sky and the breathing trees and the river that climbed."
91.67% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags15
uselessAdditionCount1
matches
0"Nyx stepped, shadow rising off their shoulders like smoke"
98.72% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags8
fancyCount2
fancyTags
0"Eva breathed (breathe)"
1"Nyx murmured (murmur)"
dialogueSentences39
tagDensity0.205
leniency0.41
rawRatio0.25
effectiveRatio0.103
83.7082%