Run: 2026-09-23-01M37P0GKPW2SZQ06YHNMQ1ZWW

Run Details

Duration:
19.9s
Cost:
$0.034840
Provider:
Claude Platform on AWS

Evaluation summary

Score Evaluator
Details Link
99.98% Matches word count (details)
99.85% Dialogue to Total Word Ratio (details)
99.9152% Overall

Model input

User/Human
You are a author of comedic heist books. Please write a 200 word scene that has 50% 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 unrolled the blueprint across the hood of the van. It was a crayon drawing of a bouncy castle. "Where did you get this?" Bill asked. "The birthday boy drew it. I told him I was a castle inspector." Bill squinted at the paper, which also featured a purple dinosaur labeled DAD. He adjusted his fake mustache, which had been sliding toward his chin all afternoon like it was trying to escape the job. "I go in as the clown," he said. "You go in as the clown. I go in as the magician. While you make balloon animals, I make the presents disappear." "I can only make one balloon animal. It's a snake." "Then make it a long snake." Somewhere beyond the hedge, twenty children shrieked at a volume usually reserved for air raid sirens. Bill flinched and gripped the side mirror. "What's the getaway plan?" Molly pointed to a crayon squiggle at the bottom of the page. "The piñata." "We're escaping in a piñata?" "No. We're escaping while they're all distracted by the piñata. Nobody watches gifts when candy falls from the sky." Bill nodded slowly, impressed. "And if the kids get suspicious?" "They're six. We bribe them with cake."
created_at"2026-09-23T17:46:27.334Z" 9/23/2026, 5:46:27 PM
model"anthropic/claude-opus-5.5-20260921"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency5524
moderation_latency(null)
generation_time19825
tokens_prompt75
tokens_completion519
native_tokens_prompt95
native_tokens_completion1723
native_tokens_completion_images(null)
native_tokens_reasoning1298
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"
usage0.03484
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790185587-jmVyCMvTdP8faSHqU8l3"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790185587-Aldb9BikSDS6bYpxjKUU"
upstream_id"msg_011CfLnjbfBz1mbRUd42Xkw5"
provider_responses
0
endpoint_id"3a2388bc-3740-4e64-a1f5-4e301726b6b9"
id"msg_011CfLnjbfBz1mbRUd42Xkw5"
is_byokfalse
latency1114
model_permaslug"anthropic/claude-opus-5.5-20260921"
provider_name"Claude Platform on AWS"
status200
total_cost0.03484
cache_discount(null)
upstream_inference_cost0
provider_name"Claude Platform on AWS"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
99.98% Matches word count n/a
neededCleanfalse
words202
99.85% Dialogue to Total Word Ratio
Ratio: 51.98%, Deviation: 1.98%
neededCleanfalse
wordsTotal202
wordsDialogue105
99.9152%