Run: 2026-06-01-01KT1G8A0GK6BZ4MXGVKA2ZPER

Run Details

Duration:
12.2s
Cost:
$0.014815
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
97.63% Matches word count (details)
94.99% Dialogue to Total Word Ratio (details)
96.3078% 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 wobbling in the suburban backyard. Streamers sagged from the gutters, and a clown honked his nose at children who plainly despised him. Beside her, Bill unfolded a laminated map of the patio furniture, sweating through a stolen caterer's uniform two sizes too small. "The presents are stacked by the piƱata," Molly whispered, jabbing a finger at a glittering mountain of wrapped boxes. Bill nodded gravely, producing a grappling hook better suited to scaling a battleship than a six-foot garden fence. He'd also packed three smoke bombs, a crowbar, and an alarming quantity of confetti, reasoning that nobody suspects a thief who arrives celebrating. The plan was elegant in theory. Molly would create a diversion by challenging the clown to a balloon-animal duel, drawing the parents into a betting frenzy. Bill, meanwhile, would belly-crawl across the lawn beneath a tactical tablecloth, loading gift bags into a wagon disguised as party favors. "What about the dog?" Bill asked, eyeing a sleeping golden retriever. Molly smiled, withdrawing a packet of deli ham from her jacket. They had thought of everything. Everything except the birthday boy, who was now staring directly at them, holding a water pistol with terrifying confidence.
created_at"2026-06-01T11:49:08.248Z" 6/1/2026, 11:49:08 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4048
moderation_latency(null)
generation_time12214
tokens_prompt77
tokens_completion383
native_tokens_prompt93
native_tokens_completion574
native_tokens_completion_images(null)
native_tokens_reasoning44
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_01SVrp7y59hM3ecUJ1HeeTMe"
is_byokfalse
latency1870
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-1780314548-v9sGVZSz64UhInbFIbxd"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780314548-xn5mKfw09FjszofgrDin"
upstream_id"msg_01SVrp7y59hM3ecUJ1HeeTMe"
total_cost0.014815
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
97.63% Matches word count n/a
neededCleanfalse
words207
94.99% Dialogue to Total Word Ratio
Ratio: 5.24%, Deviation: 4.76%
neededCleanfalse
wordsTotal210
wordsDialogue11
96.3078%