Run: 2026-05-31-01KSYX80ZX7C59030PK3VGN45P

Run Details

Duration:
9.5s
Cost:
$0.011915
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
99.92% Matches word count (details)
0.00% Dialogue to Total Word Ratio (details)
49.9595% 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 spread the blueprints across the table, knocking over a juice box she'd stolen earlier as a test run. "The bouncy castle is our blind spot," she said, jabbing the map. "Security can't see behind it." Bill squinted. "Security? Molly, it's a seven-year-old's birthday party." "The clown counts as security." "The clown does not count as security." She slid a photograph toward him. "Tell that to Pickles the Clown, former Navy SEAL. He's got eyes like a hawk and balloons like a weapon." Bill rubbed his temples. "Why are we doing this again?" "Because," Molly whispered dramatically, "those presents contain limited-edition action figures worth thousands on the collector's market." "They're plastic toys." "They're treasure." He sighed. "And the plan?" "You distract them with the piƱata. While everyone's swinging, I grab the loot bag and we vanish through the ball pit." Bill blinked. "Through the ball pit?" "It connects to the ventilation system." "That's the dumbest thing I've ever heard." Molly grinned. "Which is exactly why it'll work. Nobody suspects the ball pit." Bill stared at her for a long moment, then grabbed his fake mustache. "Fine," he muttered. "But if that clown sees me, I'm blaming you."
created_at"2026-05-31T11:38:27.362Z" 5/31/2026, 11:38:27 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1774
moderation_latency(null)
generation_time9229
tokens_prompt77
tokens_completion335
native_tokens_prompt93
native_tokens_completion458
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"
usage0.011915
router(null)
provider_responses
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endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01YKPfGFKJ5mJ13eLDK62jVR"
is_byokfalse
latency1774
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-1780227507-rI7WU0KaJEf8tiQUdTZV"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780227507-hzYOY8y6aorIPDRvO3KZ"
upstream_id"msg_01YKPfGFKJ5mJ13eLDK62jVR"
total_cost0.011915
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
99.92% Matches word count n/a
neededCleanfalse
words197
0.00% Dialogue to Total Word Ratio
Ratio: 70.00%, Deviation: 20.00%
neededCleanfalse
wordsTotal200
wordsDialogue140
49.9595%