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Run: 2026-05-29-01KSSJKS4VKBCB3YS9PNHJBK97
Run Details
Model:
Claude Opus 4.8 (Reasoning)
Test:
Dialogue tags
Scenario:
Write 500 words with 50% dialogue
Duration:
20.3s
Cost:
$0.029240
Provider:
Anthropic
Evaluation summary
Score
Evaluator
Details Link
100.00%
Matches word count
(details)
0.00%
Dialogue to Total Word Ratio
(details)
49.9995%
Overall
Model input
User/Human
You are a author of comedic heist books. Please write a 500 word scene that has 50% words of dialogue between two thieves named Molly and Bill who are planning to break into a children's party to steal all the presents. Only include the prose of the scene without any markdown or commentary.
Model response
Messages
Meta
AI
Molly spread the blueprint across the kitchen table, smoothing out the creases with the reverence of a surgeon prepping for an operation. "Behold," she said. "The Henderson residence. Site of one Timmy Henderson's seventh birthday extravaganza." Bill squinted at the paper. "That's a coloring book page." "It's reconnaissance." "It's a picture of a dinosaur." Molly flipped the page over hastily. "The point is, we strike at fourteen hundred hours. Peak present accumulation. Every kid shows up with a gift, and they all pile them in the living room like little wrapped treasures." "And we just walk in?" "We don't walk in, Bill. We infiltrate." She pulled a paper bag onto the table and produced a rainbow wig and an oversized red nose. "I'm going as Bonkers the Clown. Nobody questions a clown at a birthday party." Bill recoiled. "Clowns are terrifying." "Exactly. Children freeze in fear, I grab the loot, we vanish. Now, you're my assistant, Sprinkles." "I'm not being called Sprinkles." "You're being called Sprinkles, and you're handling the balloon animals while I scout the gift table." Bill crossed his arms. "I can't make balloon animals. The last one I made looked like a depressed earthworm." "Then make depressed earthworms. Kids love an emotionally complex balloon." Molly checked her watch. "We've got the getaway car idling out front, the duffel bags in the trunk, and a backup plan if things go sideways." "What's the backup plan?" "We run." "That's not a plan, that's just running." "It's worked nineteen times." She tossed him a striped shirt. "Suit up, Sprinkles." Bill held up the shirt with visible despair. "Remind me how we got from robbing banks to mugging toddlers?" "Banks have lasers, Bill. Vaults. Armed guards." Molly adjusted her wig in the reflection of the toaster. "You know what a children's party has? A distracted mom, a magician who's clearly drunk, and forty unattended presents wrapped in paper we can resell." "You can't resell wrapping paper." "You can if it's got little trucks on it. Niche market. Very lucrative." Bill sighed and pulled the shirt over his head. "And the kids? They're just gonna let us walk off with everything?" "That's where the genius comes in." Molly leaned forward, eyes gleaming. "We tell them it's a game. 'Help Bonkers carry the presents to the present castle!' They'll load the bags themselves. We're not thieves, Bill. We're delegators." Bill paused, genuinely impressed despite himself. "That's actually diabolical." "Thank you. I've been workshopping it." "And if a parent catches us?" Molly slipped the red nose on with a definitive squeak. "Then Bonkers throws a pie and we exit through the bouncy castle." "There's a bouncy castle?" "There's always a bouncy castle." She grabbed the duffel bags and slung one to Bill. "Now stop asking questions and start practicing your honk." Bill stared at the squeaky nose in his palm, then at his partner of fifteen years, fully committed to a life of clowning crime. "Honk," he said weakly. "Louder, Sprinkles. Like you mean it."
created_at
"2026-05-29T09:56:25.892Z"
5/29/2026, 9:56:25 AM
model
"anthropic/claude-4.8-opus-20260528"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1029
moderation_latency
(null)
generation_time
20301
tokens_prompt
77
tokens_completion
818
native_tokens_prompt
93
native_tokens_completion
1151
native_tokens_completion_images
(null)
native_tokens_reasoning
0
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
num_fetches
(null)
web_search_engine
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"end_turn"
service_tier
"default"
usage
0.02924
router
(null)
provider_responses
0
endpoint_id
"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id
"msg_01T3kL1ZC5gpsLTmKEpvjrGb"
is_byok
false
latency
1029
model_permaslug
"anthropic/claude-4.8-opus-20260528"
provider_name
"Anthropic"
status
200
user_agent
"langchainjs-openai/1.0.0 ((node/v24.16.0; linux; x64))"
http_referer
(null)
request_id
"req-1780048585-pAgzwk5FqllM7LKR9zl9"
session_id
(null)
api_type
"completions"
id
"gen-1780048585-y48R7g16QqlRl72DR6Ap"
upstream_id
"msg_01T3kL1ZC5gpsLTmKEpvjrGb"
total_cost
0.02924
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Anthropic"
response_cache_source_id
(null)
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Matches word count
n/a
neededClean
false
words
501
0.00%
Dialogue to Total Word Ratio
Ratio: 69.26%, Deviation: 19.26%
neededClean
false
wordsTotal
501
wordsDialogue
347
49.9995%