Run: 2026-05-29-01KSSK2AR7N1DJN96XC3C94YV7

Run Details

Duration:
12.5s
Cost:
$0.012215
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
99.74% Matches word count (details)
86.94% Dialogue to Total Word Ratio (details)
93.3417% Overall

Model input

User/Human
You are a author of comedic heist books. Please write a 200 word scene that has 10% 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
Molly crouched behind the bouncy castle, binoculars pressed to her face, surveying the chaos of frosting-smeared children and exhausted parents. The presents glittered on a folding table, a mountain of glossy wrapping paper and curled ribbons begging to be liberated. Bill wormed his way beside her, dragging an enormous sack and breathing heavily through his clown mask. "Why are you dressed like that?" Molly hissed. He shrugged, the red nose squeaking. "Camouflage." She rolled her eyes and returned to her surveillance. The birthday boy, a tyrant of perhaps six years, ruled his domain with a plastic sword, knighting subjects and demanding tribute. A piñata swung ominously from an oak branch, its papier-mâché belly stuffed with reconnaissance opportunities. The plan was elegant in its simplicity. During the cake ceremony, while every eye fixed on flickering candles, they would sweep the table clean and vanish into the suburban afternoon. Molly checked her watch. The mother was already lighting matches, cupping the flame against the breeze. Children gathered like moths. "Now," she whispered. Bill stood too quickly, tripped over his oversized shoes, and tumbled directly into the bouncy castle, which deflated with a sound like a dying accordion. Forty children turned to stare. Molly closed her eyes.
created_at"2026-05-29T10:04:22.769Z" 5/29/2026, 10:04:22 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2954
moderation_latency(null)
generation_time12154
tokens_prompt77
tokens_completion347
native_tokens_prompt93
native_tokens_completion470
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"
usage0.012215
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
is_byokfalse
latency221
model_permaslug"anthropic/claude-4.8-opus-20260528"
provider_name"Anthropic"
status429
1
endpoint_id"dfc0e5bd-d703-4fe2-a7bb-655eb95d5441"
id"msg_011Jzd7WgSCKRC5aq1sAiFHe"
is_byokfalse
latency2944
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-1780049062-9DnZcxffSrF2cWaT0Zs9"
session_id(null)
api_type"completions"
id"gen-1780049062-4heAnRlWjBUjCMCXgscg"
upstream_id"msg_011Jzd7WgSCKRC5aq1sAiFHe"
total_cost0.012215
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
words204
86.94% Dialogue to Total Word Ratio
Ratio: 3.88%, Deviation: 6.12%
neededCleanfalse
wordsTotal206
wordsDialogue8
93.3417%