Run: 2026-05-31-01KSYX8109YSQ3V6868B5A6C4S

Run Details

Duration:
11.4s
Cost:
$0.014815
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
97.63% Matches word count (details)
82.08% Dialogue to Total Word Ratio (details)
89.8515% 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 pressed to her eyes, surveying the suburban battlefield that was the Henderson backyard. Balloons bobbed menacingly from the fence posts. A bounce castle loomed like an inflatable fortress, and somewhere within, a clown was juggling with the confidence of a man who'd never been arrested. Bill unrolled the blueprints—really just a crayon drawing he'd swiped from the mailbox—and spread them across the grass with the gravity of a general planning D-Day. "The presents are inside," he whispered. Molly nodded, scribbling notes. The gift table, according to her calculations, held approximately forty wrapped boxes, each containing untold treasures: action figures, dolls, possibly cash tucked into greeting cards by lazy aunts. The motherlode. Their plan was elegant in its stupidity. Bill would create a diversion involving a piñata and strategic chaos. Molly, disguised as a face-painting entertainer, would infiltrate the perimeter, load the loot into an oversized duffel bag, and vanish before the candles were even lit. She'd practiced her balloon animals for weeks. They all resembled tumors, but children weren't art critics. Bill checked his watch, sweat beading despite the autumn chill. "It's go time," he breathed. They rose in unison, two grown adults declaring war on a seven-year-old's birthday.
created_at"2026-05-31T11:38:27.444Z" 5/31/2026, 11:38:27 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2873
moderation_latency(null)
generation_time11065
tokens_prompt77
tokens_completion421
native_tokens_prompt93
native_tokens_completion574
native_tokens_completion_images(null)
native_tokens_reasoning66
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_019HJpCFmLwBVgCC4Kw3NwjH"
is_byokfalse
latency1181
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-rS432ypI1g6LmdDHkMqv"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780227507-bDnrlixQhDN0n26o2G4J"
upstream_id"msg_019HJpCFmLwBVgCC4Kw3NwjH"
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
82.08% Dialogue to Total Word Ratio
Ratio: 3.33%, Deviation: 6.67%
neededCleanfalse
wordsTotal210
wordsDialogue7
89.8515%