Run: 2026-05-29-01KSSK7ZK7YA9ZAMWBM7ZKTJ6S

Run Details

Duration:
10.7s
Cost:
$0.014815
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
99.98% Matches word count (details)
78.01% Dialogue to Total Word Ratio (details)
88.9994% 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 hydrangeas, binoculars trained on the bouncy castle as if it were Fort Knox with a clown theme. Beside her, Bill unrolled a blueprint that turned out to be a placemat from a pizza restaurant, sauce still glistening on the corner where he'd planned the getaway route. The party raged on. Twelve children, sugar-drunk and feral, swarmed the snack table while a man in a moth-eaten dinosaur costume waved his stubby arms in despair. The pile of presents glittered near the gazebo, wrapped and ribboned, practically begging to be liberated. "That's our score," Bill whispered, dribbling. Molly nodded gravely, sketching a diversion involving a piñata, three water balloons, and what she optimistically labeled "controlled chaos." Their plan hinged on infiltrating disguised as entertainers, though their only costumes were a single mustache and a tambourine. A toddler spotted them, pointed, and screamed with the lung capacity of an air raid siren. Bill froze. Molly considered surrender. "Run," she hissed. They sprinted, the dinosaur giving chase, presents forgotten, dignity shredded somewhere near the petting zoo. Behind a parked minivan they paused, breathless, defeated, and—Bill realized with horror—still clutching nothing but a stolen juice box and someone's abandoned party hat.
created_at"2026-05-29T10:07:27.855Z" 5/29/2026, 10:07:27 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2569
moderation_latency(null)
generation_time10713
tokens_prompt77
tokens_completion393
native_tokens_prompt93
native_tokens_completion574
native_tokens_completion_images(null)
native_tokens_reasoning52
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"
usage0.014815
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_0171RuFHxJam4KTddW7piUc6"
is_byokfalse
latency1002
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-1780049247-9fapFasq4sjPyXbAvuSF"
session_id(null)
api_type"completions"
id"gen-1780049247-78wbf4UkgoKEXfVKIyN6"
upstream_id"msg_0171RuFHxJam4KTddW7piUc6"
total_cost0.014815
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
99.98% Matches word count n/a
neededCleanfalse
words202
78.01% Dialogue to Total Word Ratio
Ratio: 2.94%, Deviation: 7.06%
neededCleanfalse
wordsTotal204
wordsDialogue6
88.9994%