Run: 2026-05-31-01KSYXGSHWD6VAKKVA3E8BAE3F

Run Details

Duration:
10.9s
Cost:
$0.012840
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
100.00% Matches word count (details)
87.39% Dialogue to Total Word Ratio (details)
93.6948% 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 waltz in dressed as clowns?" Bill asked. "Exactly. Nobody questions clowns at a kid's party," Molly said. "What about the presents?" "We stuff them in the balloon bags." "Clever. And the cake?" "We're not stealing cake, Bill." "Why not? It's right there." "Focus. We grab the gifts, we leave. In and out, three minutes." "What if a kid recognizes me?" "From where, exactly?" "I do birthdays on weekends." Molly stared at him. "You're a part-time party clown?" "It pays well, Molly. Children love me." "That's actually perfect cover. You distract them with balloon animals." "I only know the giraffe." "One animal?" "And a sword. Sort of." "Make the sword, hand out giraffes, I'll clear the gift table." "What if the parents are watching?" "They never watch. They're all on their phones." "True. My last gig, a dad missed his own kid's face-planting in the piƱata." "See? We're invisible." "What's our escape route?" "The bouncy castle." "We escape through a bouncy castle?" "Behind it, Bill. There's a fence." "I can't climb fences. My knee." "Then we take the minivan." "Whose minivan?" "Doesn't matter. Keys are always in the diaper bag." "Molly, you're a genius." "I know. Now grab your nose."
created_at"2026-05-31T11:43:14.504Z" 5/31/2026, 11:43:14 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1614
moderation_latency(null)
generation_time10831
tokens_prompt77
tokens_completion356
native_tokens_prompt93
native_tokens_completion495
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"
usage0.01284
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01P9FzPP4M3n5L3tBZZM9D9e"
is_byokfalse
latency1574
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-1780227794-W1Ttdd9AGOCgRtEpMi9o"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780227794-hfKK3fjtcNRAGqdc02H0"
upstream_id"msg_01P9FzPP4M3n5L3tBZZM9D9e"
total_cost0.01284
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
words201
87.39% Dialogue to Total Word Ratio
Ratio: 96.06%, Deviation: 6.06%
neededCleanfalse
wordsTotal203
wordsDialogue195
93.6948%