Run: 2026-05-31-01KSYXRY56PGDZEDYD2KW5T5B2

Run Details

Duration:
9.6s
Cost:
$0.012590
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
100.00% Matches word count (details)
72.27% Dialogue to Total Word Ratio (details)
86.1345% 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 bouncy castle, binoculars trained on the gift table. Mountains of glittering packages glistened under the afternoon sun, guarded by nothing more menacing than a clown twisting balloons into wiener dogs. "Easy money," she whispered. Bill, squeezed into a costume two sizes too small, adjusted his enormous foam dinosaur head. The zipper dug into his spine. He'd argued for the magician disguise, but Molly insisted dinosaurs blended better at a six-year-old's birthday bash. The plan was elegant in its simplicity. Bill would lumber through the crowd, distracting the children with theatrical roars while Molly, disguised as the entertainment coordinator, loaded the presents into a wagon she'd painted to resemble a party prop. They'd be gone before anyone unwrapped a single bow. A child wielding a juice box wandered dangerously close to their hiding spot. Bill froze, holding his breath inside the suffocating costume. "Stay calm," Molly mouthed. The toddler studied the dinosaur suspiciously, then offered Bill a half-eaten cookie. He accepted it with a trembling claw. Across the lawn, the birthday boy's mother announced cake time. The crowd surged toward the house, leaving the treasure unguarded. Molly grinned, gripping her wagon handle. "Showtime." Bill roared, and chaos commenced.
created_at"2026-05-31T11:47:41.364Z" 5/31/2026, 11:47:41 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency984
moderation_latency(null)
generation_time9509
tokens_prompt77
tokens_completion347
native_tokens_prompt93
native_tokens_completion485
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"
usage0.01259
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01X9u1Mv348u8Hu4m1VXNNNE"
is_byokfalse
latency984
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-1780228061-7uWJxd4Vyuw61naeyiTd"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780228061-O07tf4tnKOC9N43JrByP"
upstream_id"msg_01X9u1Mv348u8Hu4m1VXNNNE"
total_cost0.01259
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
72.27% Dialogue to Total Word Ratio
Ratio: 2.45%, Deviation: 7.55%
neededCleanfalse
wordsTotal204
wordsDialogue5
86.1345%