Run: 2026-05-31-01KSYXQZ14J7W75VJJ2XPBAR3M

Run Details

Duration:
9.6s
Cost:
$0.013915
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
95.99% Matches word count (details)
65.34% Dialogue to Total Word Ratio (details)
80.6628% Overall

Model input

User/Human
You are a author of comedic heist books. Please write a 200 word scene that has 90% 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

AI
"So how do we get in?" Bill asked. "We dress as clowns," Molly said. "Clowns? I hate clowns." "Everybody hates clowns. That's why nobody looks at them too closely." "And the presents?" "Big sack. Clowns always carry big sacks." "That's Santa." "Santa, clowns, same energy. Nobody questions a man with a sack." "What about the parents?" "Distracted. Cake, juice boxes, forty screaming children. We're invisible." "And if a kid recognizes us?" "From where, Bill? Do you frequent children's parties?" "I have a nephew." "Will your nephew be there?" "...No." "Then we're fine." "What if they want balloon animals?" "Then you make a balloon animal." "I can't make balloon animals!" "Make a snake. A snake is just one balloon." "That's lazy." "It's a children's party, not the Louvre. Lower your standards." "And the getaway?" "Ice cream truck. Parked out front. Nobody suspects an ice cream truck." "We don't have an ice cream truck." "We will by Saturday." "You're stealing an ice cream truck to steal birthday presents?" "It's called commitment, Bill." "This is the dumbest plan you've ever had." "Worse than the aquarium?" "...The aquarium was pretty bad." "So we're agreed. Clowns, sacks, ice cream truck." "Fine. But I'm not making balloon animals." "Make the snake." "Fine. One snake."
created_at"2026-05-31T11:47:09.487Z" 5/31/2026, 11:47:09 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency965
moderation_latency147
generation_time9454
tokens_prompt77
tokens_completion381
native_tokens_prompt93
native_tokens_completion538
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"
usage0.013915
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01QNq2hqS111eXsmmELLh9KD"
is_byokfalse
latency965
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-1780228029-a8fKypDC6wC1nHhlOK4i"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780228029-gbzrHYv6fTWan9MYrBg0"
upstream_id"msg_01QNq2hqS111eXsmmELLh9KD"
total_cost0.013915
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
95.99% Matches word count n/a
neededCleanfalse
words208
65.34% Dialogue to Total Word Ratio
Ratio: 98.08%, Deviation: 8.08%
neededCleanfalse
wordsTotal208
wordsDialogue204
80.6628%