Run: 2026-05-31-01KSYXB3KXR0PE6JEHXYTX3EJ4

Run Details

Duration:
9.4s
Cost:
$0.013815
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
100.00% Matches word count (details)
97.40% Dialogue to Total Word Ratio (details)
98.6981% 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 hedge, binoculars trained on the bouncy castle wobbling in the suburban backyard. Streamers fluttered. A clown juggled balloons with the desperate energy of a man who had not been paid. Beside her, Bill chewed a granola bar, dropping crumbs into the surveillance equipment. "This is our biggest score yet," he whispered. She lowered the binoculars and glared. The presents sat stacked on a folding table like a glittering Everest of wrapping paper and ribbon, guarded by nothing more menacing than a sleeping golden retriever and a grandmother dozing in a lawn chair. The plan was simple, which worried Molly, because Bill's plans were never simple for long. He had insisted on dressing as a magician, claiming the disguise would let them blend in. Currently he wore a top hat, a cape, and the haunted expression of a man whose fake mustache was peeling in the heat. A child shrieked nearby. Cake was being served. "Wait for the piƱata," Molly murmured. "Maximum chaos." Bill nodded solemnly, then pulled a dove from his sleeve, which immediately flew away, taking a chunk of his cape with it. Molly closed her eyes. Somewhere, professionally, she had taken a very wrong turn.
created_at"2026-05-31T11:40:08.201Z" 5/31/2026, 11:40:08 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2687
moderation_latency(null)
generation_time9305
tokens_prompt77
tokens_completion384
native_tokens_prompt93
native_tokens_completion534
native_tokens_completion_images(null)
native_tokens_reasoning70
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"
usage0.013815
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01YFDNejrULFNzUp8iEZ872o"
is_byokfalse
latency1183
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-1780227608-KwIafCou9vBGBtA67mMQ"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780227608-84H6xHxlMtgH7kiac4zE"
upstream_id"msg_01YFDNejrULFNzUp8iEZ872o"
total_cost0.013815
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
97.40% Dialogue to Total Word Ratio
Ratio: 5.97%, Deviation: 4.03%
neededCleanfalse
wordsTotal201
wordsDialogue12
98.6981%