Run: 2026-06-01-01KT1J12677C15ZRJYYH3FBDX9

Run Details

Model:
Claude Opus 4.8 (Reasoning, Low)
Test:
Bad Writing Habits
Scenario:
Fantasy: entering an ancient ruin
Duration:
40.3s
Cost:
$0.067375
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
100.00% Adverbs in dialogue tags (details)
95.36% AI-ism adverb frequency (details)
100.00% AI-ism character names (details)
100.00% AI-ism location names (details)
39.70% 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)
98.10% Name drop frequency (details)
18.42% Narrator intent-glossing (details)
15.84% "Not X but Y" pattern overuse (details)
100.00% Overuse of "that" (subordinate clause padding) (details)
100.00% Paragraph length variance (details)
99.21% 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)
76.89% Sentence opener variety (details)
100.00% Adverb-first sentence starts (details)
100.00% Pronoun-first sentence starts (details)
80.00% Subject-first sentence starts (details)
0.00% Subordinate conjunction sentence starts (details)
60.44% Technical jargon density (details)
100.00% Useless dialogue additions (details)
87.50% Dialogue tag variety (said vs. fancy) (details)
82.3821% 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 teeth, their bark silvered with frost that had no business clinging to anything in late June. Rory stopped between two of them and felt the air change against her skin, warm where it should have been cool, sweet where Richmond Park smelled of cut grass and dog. "This is it," she said. "Has to be." "You're certain." Nyx flowed at her shoulder, their voice carried on a wind that wasn't blowing. In the dappled light their silhouette thinned to almost nothing, a smudge of dark against the green. "Mortals walk past this place every day and feel only a chill." "I'm not most mortals." She pressed two fingers to the pendant at her throat. It sat cool and quiet, no Hel-warmth in it here, and somehow that steadied her more than warmth would have. "Eva said the seer takes payment in questions. Whatever that means." She stepped through. The light went first. One moment the canopy of oaks broke the sky into shards of grey-blue; the next, the sky itself dropped away and a softer one took its place — not blue, not gold, but the colour of honey held against a candle. No sun showed. The glow came from everywhere and nowhere, seeping up from the grass as much as falling from above. Rory's breath caught. "Don't," Nyx murmured behind her. "Whatever you're about to feel, hold it loosely. Wonder is a door they walk through." She heard them, and she didn't listen, because the grove had unrolled before her like something out of a dream she'd forgotten waking from. Wildflowers crowded the clearing in colours that shouldn't have grown together — bluebells laced through poppies, snowdrops shoulder to shoulder with foxglove, every season of bloom heaped into one impossible meadow. They moved when no breeze touched them, turning their faces, following her. "They're watching me." She crouched, hand hovering over a cluster of white blossoms that drew their petals shut as her fingers neared. "The flowers. They're watching me." "Then don't touch them." Nyx had solidified now, stepping fully into the grove, and even they seemed reduced here, their violet eyes guttering like flames in a draught. "This place is older than the Veil. Older than the Courts that made the Veil. Things here have memories." The third of their party came through last, and stumbled. Eva caught herself on a standing stone and snatched her hand back from it with a hiss. "It's warm," she said. "The stone's warm. Stones aren't supposed to be warm." "Lots of things here aren't supposed to be anything." Rory rose and turned a slow circle, taking it in. The clearing should have ended where the bracken began. It didn't. The treeline kept its distance no matter which way she faced, the oaks marching back into a haze of gold, and she had the dizzy certainty that if she walked toward them she'd walk forever and arrive nowhere. A sound threaded through the silence then. Water, but not water — a chiming, glassy run of notes, rising and falling like a voice clearing its throat before speech. "A stream." Eva pointed. "There. By the roots." It cut across the meadow in a ribbon, and Rory knelt at its edge and saw that it ran the wrong way — uphill, climbing a gentle slope toward the haze, threading back on itself in loops no river on Earth would dare. The water shone clear as breath. Beneath it, where there should have been silt and stone, small lights drifted, pale and slow, like coins sinking that never reached a bottom. "Don't drink it," Nyx said. "I wasn't going to." "You were thinking about it. I felt you think about it." She drew her hand back from the surface, where her reflection had been gazing up at her with an expression she hadn't been wearing. "How long have we been in here?" "Long enough that the answer would frighten you." Nyx had gone still, head tilted, the whisper of their voice gone taut. "Time runs loose past the stones. An hour, a day. You don't measure it. You survive it." Eva had wandered ahead despite the warning, drawn toward a thicket of hawthorn that bent over the path like a doorway. Frost rimed its thorns. Through the gap, deeper in, something glimmered — a hanging curtain of light, threads of it strung between the branches, swaying with a music Rory could feel in her back teeth before she could hear it. "Rory." Eva's voice had thinned. "Rory, come look at this." She went. The pendant gave one small, surprising pulse against her sternum, then nothing — and she filed that away, because the Heartstone only stirred near a Hel portal, and there was no Hel here, only this place that belonged to neither side of the Veil. Maybe the grove confused it. Maybe the grove confused everything. Through the hawthorn arch the light resolved into spider-silk, vast sheets of it strung from bough to bough, and caught in the silk like dew were stars. Not reflections. Stars — points of cold fire that turned and burned, each one a pinprick of a sky that wasn't this sky, that wasn't any sky Rory had stood beneath. Eva reached for one. "No." Rory caught her wrist, fingers closing over the crescent scar on her own as she did it, an old habit, grounding. "No. We don't touch. Nyx said." "It's beautiful, Rory. It's the most beautiful thing I've ever—" "That's the point." Nyx's whisper slid between them, cold and clear. "Beauty is the bait. The Fae do not build cages of iron. They build them out of things you cannot bear to leave." Eva blinked, as if waking, and let her arm fall. The starlit web swayed on, indifferent. Then the music stopped. The chiming stream, the thrumming silk, the small song the flowers had been humming under everything — all of it cut at once, and the silence that dropped was so complete Rory heard her own heart knocking at her ribs. A figure stood at the far edge of the clearing where no figure had been. Silver hair to her waist. Pale lavender eyes that held the honey-light and gave none of it back. She left no print in the dew as she came, and the flowers turned to follow her the way they'd turned to follow Rory. "Three came through the stones," said Isolde. "But only one of you was invited."
created_at"2026-06-01T12:20:08.017Z" 6/1/2026, 12:20:08 PM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2646
moderation_latency(null)
generation_time40259
tokens_prompt1816
tokens_completion1657
native_tokens_prompt2695
native_tokens_completion2156
native_tokens_completion_images(null)
native_tokens_reasoning65
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"
usage0.067375
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01Ci9bqAnWV4LMhX7AC36VHg"
is_byokfalse
latency1106
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-1780316408-tjHkNur4klCmIyafykR9"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780316408-7yn1QaHgG19kcm0kkjyy"
upstream_id"msg_01Ci9bqAnWV4LMhX7AC36VHg"
total_cost0.067375
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
adverbTagCount0
adverbTags(empty)
dialogueSentences32
tagDensity0.438
leniency0.875
rawRatio0
effectiveRatio0
95.36% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1078
totalAiIsmAdverbs1
found
0
adverb"loosely"
count1
highlights
0"loosely"
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)
39.70% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1078
totalAiIsms13
found
0
word"chill"
count1
1
word"warmth"
count2
2
word"silence"
count2
3
word"whisper"
count2
4
word"could feel"
count1
5
word"pulse"
count1
6
word"resolved"
count1
7
word"silk"
count3
highlights
0"chill"
1"warmth"
2"silence"
3"whisper"
4"could feel"
5"pulse"
6"resolved"
7"silk"
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
narrationSentences58
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount0
narrationSentences58
filterMatches(empty)
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences75
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen43
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1086
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions8
unquotedAttributions0
matches(empty)
98.10% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions32
wordCount867
uniqueNames12
maxNameDensity1.04
worstName"Rory"
maxWindowNameDensity2
worstWindowName"Rory"
discoveredNames
June1
Richmond1
Park1
Nyx6
Hel-warmth1
Rory9
Earth1
Eva6
Heartstone1
Hel3
Veil1
Isolde1
persons
0"Nyx"
1"Rory"
2"Earth"
3"Eva"
4"Heartstone"
places
0"Richmond"
1"Park"
2"Hel"
globalScore0.981
windowScore1
18.42% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences38
glossingSentenceCount2
matches
0"seemed reduced here, their violet eyes guttering like flames in a draught"
1"as if waking and let her arm fall"
15.84% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches2
per1kWords1.842
wordCount1086
matches
0"not blue, not gold, but the colour of honey held against a candle"
1"not gold, but the colour of honey held against a candle"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences75
matches
0"saw that it"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs35
mean31.03
std22.53
cv0.726
sampleLengths
056
18
245
345
43
566
63
720
867
927
1047
1127
1213
1368
1429
158
1673
175
184
1911
2031
2138
2261
2310
2456
2558
264
2728
2810
2934
3016
314
3240
3357
3414
99.21% Passive voice overuse
Target: ≤2% passive sentences
passiveCount1
totalSentences58
matches
0"been silt"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount1
totalVerbs152
matches
0"wasn't blowing"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount8
semicolonCount1
flaggedSentences8
totalSentences75
ratio0.107
matches
0"One moment the canopy of oaks broke the sky into shards of grey-blue; the next, the sky itself dropped away and a softer one took its place — not blue, not gold, but the colour of honey held against a candle."
1"Wildflowers crowded the clearing in colours that shouldn't have grown together — bluebells laced through poppies, snowdrops shoulder to shoulder with foxglove, every season of bloom heaped into one impossible meadow."
2"Water, but not water — a chiming, glassy run of notes, rising and falling like a voice clearing its throat before speech."
3"It cut across the meadow in a ribbon, and Rory knelt at its edge and saw that it ran the wrong way — uphill, climbing a gentle slope toward the haze, threading back on itself in loops no river on Earth would dare."
4"Through the gap, deeper in, something glimmered — a hanging curtain of light, threads of it strung between the branches, swaying with a music Rory could feel in her back teeth before she could hear it."
5"The pendant gave one small, surprising pulse against her sternum, then nothing — and she filed that away, because the Heartstone only stirred near a Hel portal, and there was no Hel here, only this place that belonged to neither side of the Veil."
6"Stars — points of cold fire that turned and burned, each one a pinprick of a sky that wasn't this sky, that wasn't any sky Rory had stood beneath."
7"The chiming stream, the thrumming silk, the small song the flowers had been humming under everything — all of it cut at once, and the silence that dropped was so complete Rory heard her own heart knocking at her ribs."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount863
adjectiveStacks0
stackExamples(empty)
adverbCount24
adverbRatio0.027809965237543453
lyAdverbCount3
lyAdverbRatio0.0034762456546929316
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences75
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences75
mean14.48
std11.17
cv0.771
sampleLengths
025
131
25
33
416
517
612
714
820
911
103
114
1241
133
1418
153
165
1715
1824
1931
2012
2122
225
2328
2419
2510
2617
274
289
2919
309
312
3238
337
3422
354
364
3743
386
3924
405
414
4211
4324
447
4521
4617
4721
484
4936
76.89% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats4
diversityRatio0.49333333333333335
totalSentences75
uniqueOpeners37
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount3
totalSentences50
matches
0"Maybe the grove confused it."
1"Maybe the grove confused everything."
2"Then the music stopped."
ratio0.06
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount9
totalSentences50
matches
0"She pressed two fingers to"
1"It sat cool and quiet,"
2"She stepped through."
3"She heard them, and she"
4"They moved when no breeze"
5"She crouched, hand hovering over"
6"It cut across the meadow"
7"She drew her hand back"
8"She left no print in"
ratio0.18
80.00% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount38
totalSentences50
matches
0"The standing stones rose out"
1"Rory stopped between two of"
2"Nyx flowed at her shoulder,"
3"She pressed two fingers to"
4"It sat cool and quiet,"
5"She stepped through."
6"The light went first."
7"The glow came from everywhere"
8"Rory's breath caught."
9"Nyx murmured behind her"
10"She heard them, and she"
11"Wildflowers crowded the clearing in"
12"They moved when no breeze"
13"She crouched, hand hovering over"
14"Nyx had solidified now, stepping"
15"The third of their party"
16"Eva caught herself on a"
17"Rory rose and turned a"
18"The clearing should have ended"
19"The treeline kept its distance"
ratio0.76
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences50
matches(empty)
ratio0
60.44% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences26
technicalSentenceCount3
matches
0"They moved when no breeze touched them, turning their faces, following her."
1"The pendant gave one small, surprising pulse against her sternum, then nothing — and she filed that away, because the Heartstone only stirred near a Hel portal,…"
2"The chiming stream, the thrumming silk, the small song the flowers had been humming under everything — all of it cut at once, and the silence that dropped was s…"
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags14
uselessAdditionCount0
matches(empty)
87.50% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags5
fancyCount2
fancyTags
0"She pressed (press)"
1"Nyx murmured (murmur)"
dialogueSentences32
tagDensity0.156
leniency0.313
rawRatio0.4
effectiveRatio0.125
82.3821%