Run: 2026-05-31-01KSYXHVTA3ZK0JH5TS9H9R76J

Run Details

Model:
Claude Opus 4.8 (Reasoning, High)
Test:
Bad Writing Habits
Scenario:
Fantasy: entering an ancient ruin
Duration:
41.1s
Cost:
$0.064800
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
100.00% Adverbs in dialogue tags (details)
95.17% AI-ism adverb frequency (details)
100.00% AI-ism character names (details)
100.00% AI-ism location names (details)
75.85% 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)
87.81% Name drop frequency (details)
100.00% 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)
99.42% 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)
77.19% Sentence opener variety (details)
0.00% Adverb-first sentence starts (details)
100.00% Pronoun-first sentence starts (details)
13.57% Subject-first sentence starts (details)
0.00% Subordinate conjunction sentence starts (details)
37.04% Technical jargon density (details)
58.33% Useless dialogue additions (details)
85.48% Dialogue tag variety (said vs. fancy) (details)
80.9953% 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, two oaks grown into pillars, their bark twisted into spirals that no living tree should hold. Rory stopped at the threshold and pressed a hand to her chest, where the Heartstone hung cold and quiet beneath her jacket. "This is it?" She glanced back. "A clearing. We walked an hour through Richmond Park for a clearing." Nyx slid forward, their silhouette thinning where the late sun struck the gap between stones. "Look again, Aurora. You're using mortal eyes." She looked. The air between the oaks shimmered, a heat-haze in October, and beyond it the colours ran wrong. Grass too green. Light too gold for the hour. "Stay close," Nyx murmured, the words carried on a breeze that hadn't been there a moment ago. "And touch nothing that offers itself freely." They stepped through. The cold of the park fell away behind her like a coat shrugged off. Warmth wrapped Rory's skin, and with it a smell so thick she tasted it on her tongue — honey, crushed thyme, something sweet and rotting underneath. The standing stones were gone. So was the path. So, she realised with a lurch in her gut, was the way back. "Nyx." She turned a slow circle. "The gate." "It's there. It simply chooses not to be seen yet." The Shade had gone solid, taking the shape of a tall figure carved from dusk, violet eyes the only fixed thing in their face. "The Grove does not like to be left easily." Eva came through last, stumbling, one hand braced on Rory's shoulder. "Christ. It's summer in here." "It's nothing in here." Nyx tilted their head. "Time, weather, season — the Grove wears them like jewellery. Don't trust any of it." Rory walked deeper because standing still felt worse. The grass gave under her boots without a sound, springing back so each footprint vanished as she lifted her heel. Wildflowers crowded the edges of a narrow track — bluebells beside foxgloves beside blooms she had no name for, petals the deep crimson of arterial blood, opening and closing in a slow rhythm like sleeping mouths. One leaned toward her ankle as she passed. She stepped wide. "You see that?" Eva whispered. "I see it." The track wound between trees that grew taller the further in they went, until the canopy closed overhead and the gold light came down in shafts thick enough to look solid. Dust motes hung in them, unmoving. When Rory waved a hand through one beam the motes scattered, then drifted back into the exact pattern they'd held before, as if the air itself remembered its own arrangement. "That's not right," she said. "Very little here is right." Nyx kept pace at her shoulder, their feet making no impression on the moss. "You're standing in a seam, Aurora. A place stitched between your world and the one I came from. The rules fray at the edges." A sound rose ahead — water, but layered, as though a dozen streams ran at different speeds. They came out at a pool fed by a fall that dropped from no visible height, the water spilling from the air a body's length above the surface. It struck the pool without ripple. Rory crouched, watching her own reflection, and the reflection blinked a half-second late. She stood up fast. "It does that," Nyx said. "Don't drink it. Don't look too long." "You could've led with that." Eva had wandered to the pool's far edge, where a low stone bench sat half-swallowed by ivy. Carvings ran along its seat, worn soft, faces and antlers and hands with too many fingers. She reached for one. "Eva." Rory's voice came sharper than she meant. "He said touch nothing." Eva's fingers stopped a breath from the stone. "It's just a bench." "Nothing here is just anything." Nyx flowed between them, and for an instant the warmth dropped from the air, gooseflesh climbing Rory's arms. "These were left by hands older than the Courts. Older than the Veil. The Grove keeps them because it cannot bring itself to forget. Sit, and you may find a hundred years gone when you rise." Eva snatched her hand back and tucked it under her arm. They moved on. The path narrowed, the trees pressing closer, and now Rory heard it under the false birdsong — a low hum, felt more than heard, vibrating in the small bones of her ears and the fillings of her teeth. The Heartstone stayed cold, but the Fae blade at her hip had begun to glow, a thin moonsilver light bleeding through the leather of its sheath though no moon hung above them. "It's reacting." She drew it an inch. The luminescence brightened, casting pale lines across the bark. "Of course it is." Nyx's whisper had gone careful, each word weighed. "Its mother is near. The blade was forged from the heart of this place. Bring it home and it remembers." The track opened without warning. A clearing within the clearing — impossible, but she'd stopped arguing with the word. Wildflowers carpeted it knee-deep, and in the centre stood an oak vast beyond reckoning, its trunk wide as a house, roots breaking the ground in arcs a person could walk under. Lanterns hung from the lower branches, though no flame burned in them — only a soft suspended light, like fireflies that had agreed to stay. Petals drifted down through still air and did not land. Rory's breath caught. The unease she'd carried since the threshold thinned, washed under by something else, something that prickled hot behind her eyes. Wonder, raw and unguarded, the kind she hadn't felt since she was small. "It's beautiful," she said, and hated how thin the word was. "It's a snare." Nyx didn't slow, but their hand — solid, cold — closed around her wrist, over the crescent scar. "Beauty is how the old places feed. Keep moving, Aurora. The Seer waits at the heart, and the Grove will hold you here forever if you let it ask." She let herself be led, the blade burning soft against her thigh, the great tree swelling above them, and somewhere in its roots a light the colour of pale lavender began to glow.
created_at"2026-05-31T11:43:49.59Z" 5/31/2026, 11:43:49 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1047
moderation_latency(null)
generation_time41070
tokens_prompt1816
tokens_completion1540
native_tokens_prompt2695
native_tokens_completion2053
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"
usage0.0648
router(null)
provider_responses
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endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01APcUNoDzauojrqBm8Qa2PH"
is_byokfalse
latency1047
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-1780227829-ryqajHM95ZgLpCaKtEPs"
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preset_id(null)
api_type"completions"
id"gen-1780227829-n0ThJUMoWiKyFhmRwHQk"
upstream_id"msg_01APcUNoDzauojrqBm8Qa2PH"
total_cost0.0648
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
adverbTagCount1
adverbTags
0"She glanced back [back]"
dialogueSentences31
tagDensity0.484
leniency0.968
rawRatio0.067
effectiveRatio0.065
95.17% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1035
totalAiIsmAdverbs1
found
0
adverb"very"
count1
highlights
0"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)
75.85% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1035
totalAiIsms5
found
0
word"shimmered"
count1
1
word"warmth"
count2
2
word"lurch"
count1
3
word"whisper"
count1
highlights
0"shimmered"
1"warmth"
2"lurch"
3"whisper"
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
narrationSentences60
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount1
narrationSentences60
filterMatches(empty)
hedgeMatches
0"began to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences76
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen37
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1044
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions7
unquotedAttributions0
matches(empty)
87.81% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions28
wordCount804
uniqueNames7
maxNameDensity1.24
worstName"Rory"
maxWindowNameDensity2
worstWindowName"Rory"
discoveredNames
Heartstone2
Nyx8
October1
Rory10
Shade1
Eva5
Fae1
persons
0"Heartstone"
1"Nyx"
2"Rory"
3"Shade"
4"Eva"
places
0"October"
globalScore0.878
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences42
glossingSentenceCount0
matches(empty)
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount1044
matches(empty)
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences76
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs35
mean29.83
std23.54
cv0.789
sampleLengths
047
118
222
328
424
53
662
78
843
916
1023
1175
125
133
1467
155
1643
1764
184
1912
205
2137
2212
2312
2459
2511
2673
2716
2832
295
3080
3136
3211
3350
3433
99.42% Passive voice overuse
Target: ≤2% passive sentences
passiveCount1
totalSentences60
matches
0"were gone"
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
emDashCount8
semicolonCount0
flaggedSentences7
totalSentences76
ratio0.092
matches
0"Warmth wrapped Rory's skin, and with it a smell so thick she tasted it on her tongue — honey, crushed thyme, something sweet and rotting underneath."
1"Wildflowers crowded the edges of a narrow track — bluebells beside foxgloves beside blooms she had no name for, petals the deep crimson of arterial blood, opening and closing in a slow rhythm like sleeping mouths."
2"A sound rose ahead — water, but layered, as though a dozen streams ran at different speeds."
3"The path narrowed, the trees pressing closer, and now Rory heard it under the false birdsong — a low hum, felt more than heard, vibrating in the small bones of her ears and the fillings of her teeth."
4"A clearing within the clearing — impossible, but she'd stopped arguing with the word."
5"Lanterns hung from the lower branches, though no flame burned in them — only a soft suspended light, like fireflies that had agreed to stay."
6"\"It's a snare.\" Nyx didn't slow, but their hand — solid, cold — closed around her wrist, over the crescent scar."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount800
adjectiveStacks0
stackExamples(empty)
adverbCount21
adverbRatio0.02625
lyAdverbCount2
lyAdverbRatio0.0025
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences76
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences76
mean13.74
std10.01
cv0.729
sampleLengths
025
122
26
312
415
57
62
717
83
96
1017
117
123
1314
1426
155
164
1713
186
192
2034
219
2211
235
248
2515
268
2720
2836
298
303
315
323
3331
346
3530
365
3719
3824
3917
4028
416
4213
434
445
457
465
4717
4816
494
77.19% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats3
diversityRatio0.4868421052631579
totalSentences76
uniqueOpeners37
0.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount0
totalSentences56
matches(empty)
ratio0
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount12
totalSentences56
matches
0"She glanced back"
1"They stepped through."
2"She turned a slow circle"
3"She stepped wide."
4"They came out at a"
5"It struck the pool without"
6"She stood up fast."
7"She reached for one."
8"They moved on."
9"She drew it an inch"
10"she said, and hated how"
11"She let herself be led,"
ratio0.214
13.57% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount50
totalSentences56
matches
0"The standing stones came into"
1"Rory stopped at the threshold"
2"She glanced back"
3"Nyx slid forward, their silhouette"
4"The air between the oaks"
5"Grass too green."
6"Nyx murmured, the words carried"
7"They stepped through."
8"The cold of the park"
9"Warmth wrapped Rory's skin, and"
10"The standing stones were gone."
11"She turned a slow circle"
12"The Shade had gone solid,"
13"Eva came through last, stumbling,"
14"Nyx tilted their head"
15"Rory walked deeper because standing"
16"The grass gave under her"
17"Wildflowers crowded the edges of"
18"She stepped wide."
19"The track wound between trees"
ratio0.893
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences56
matches(empty)
ratio0
37.04% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences27
technicalSentenceCount4
matches
0"The track wound between trees that grew taller the further in they went, until the canopy closed overhead and the gold light came down in shafts thick enough to…"
1"When Rory waved a hand through one beam the motes scattered, then drifted back into the exact pattern they'd held before, as if the air itself remembered its ow…"
2"Lanterns hung from the lower branches, though no flame burned in them — only a soft suspended light, like fireflies that had agreed to stay."
3"The unease she'd carried since the threshold thinned, washed under by something else, something that prickled hot behind her eyes."
58.33% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags15
uselessAdditionCount2
matches
0"Nyx kept, their feet making no impression on the moss"
1"Nyx's whisper had, each word weighed"
85.48% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags5
fancyCount2
fancyTags
0"Nyx murmured (murmur)"
1"Eva whispered (whisper)"
dialogueSentences31
tagDensity0.161
leniency0.323
rawRatio0.4
effectiveRatio0.129
80.9953%