Run: 2026-05-31-01KSYXBHJVCZ51XHASKKV7E8Y2

Run Details

Duration:
9.9s
Cost:
$0.012390
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
99.74% Matches word count (details)
52.20% Dialogue to Total Word Ratio (details)
75.9700% 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 we wait until the piñata," Molly whispered. "Why the piñata?" "Because, Bill, when that thing bursts, every kid loses their tiny mind. Pure chaos. We grab the gifts and vanish." "What about the parents?" "Distracted. Filming. Crying about how fast their babies grew up." "And the clown?" "What clown?" "There's always a clown, Molly." "Then we neutralize the clown." "I'm not punching a clown." "You won't punch him. You'll simply offer to hold his balloons, and when his hands are full—" "I steal the balloons?" "No, you genius, we slip past him. Focus." "I don't like clowns. They've got those eyes." "Everyone's got eyes, Bill." "Not like clowns." "Can we please discuss the actual plan?" "Fine. How do we carry forty presents?" "The bouncy castle." "Excuse me?" "We deflate it, load the loot inside, roll it out like a giant burrito." "That's... actually brilliant." "I know." "One problem. I RSVP'd as 'Uncle Terrence.' What if they ask about Terrence?" "You said you were a guest?" "I brought a card. It plays music." "Bill." "It seemed festive!" "We are robbing children, not attending the party." "A man can do both, Molly. A man can do both."
created_at"2026-05-31T11:40:22.505Z" 5/31/2026, 11:40:22 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1032
moderation_latency214
generation_time9606
tokens_prompt77
tokens_completion342
native_tokens_prompt93
native_tokens_completion477
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"
usage0.01239
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01Q2f5SLvLXJ59LNcdppnK4s"
is_byokfalse
latency1032
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-1780227622-tmwhyZrqEBUhvwi2TIgF"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780227622-U5ktWuJei5TQpJs8ef71"
upstream_id"msg_01Q2f5SLvLXJ59LNcdppnK4s"
total_cost0.01239
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
99.74% Matches word count n/a
neededCleanfalse
words196
52.20% Dialogue to Total Word Ratio
Ratio: 98.98%, Deviation: 8.98%
neededCleanfalse
wordsTotal196
wordsDialogue194
75.9700%