NC Bench
Overview
About
Tests
Categories
Models
Vendors
Compare
Run: 2026-07-25-01KYCPMWV0A1P8Q2TZ4F615JGV
Run Details
Model:
Claude Opus 5
Test:
Dialogue tags
Scenario:
Write 500 words with 50% dialogue
Duration:
21.1s
Cost:
$0.028115
Provider:
Amazon Bedrock
Evaluation summary
Score
Evaluator
Details Link
100.00%
Matches word count
(details)
0.00%
Dialogue to Total Word Ratio
(details)
49.9995%
Overall
Model input
User/Human
You are a author of comedic heist books. Please write a 500 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
Messages
Meta
AI
The van smelled of stale crisps and ambition. Molly had spread a napkin across the dashboard and drawn what she insisted was a floor plan of the Hendersons' back garden, though it looked more like a diagram of a duck. "Right," she said, tapping the napkin. "Bouncy castle here. Trestle table here. Presents stacked at the base of the trestle table, which is here, under the bunting." Bill squinted. "Why's the bouncy castle got a beak?" "That's the entrance flap." "It's got an eye as well." "That's a shrub." Molly folded the napkin with dignity. "Focus, Bill. Sixteen children, average haul of two presents apiece, that's thirty-two units of merchandise. Some of those units are Lego." "I don't like it." "You said that about the tombola." "The tombola was different. The tombola was adults." Bill shifted in his seat, which squeaked in sympathy. "Kids notice things. Kids stare. I once stole a hubcap in front of a toddler and he tracked me for three streets like a small furious detective." "Which is why we're not going in as burglars." Molly reached into the back and produced, with the reverence of a magician, a bright yellow costume of indeterminate species. "We're going in as entertainment." Bill looked at it for a long moment. "What is that." "Mister Wobbles." "Mister Wobbles is a bee." "Mister Wobbles is a *duck*." "That explains the napkin," Bill said. "Molly, that costume has a stinger." "It's a tail." "It's yellow with black stripes." "It's a very unusual duck." She thrust it at him. "You'll be Mister Wobbles. You'll do the balloon animals, you'll keep the children herded near the bouncy castle, and while sixteen sets of eyes are watching you fail to make a giraffe, I'll be shifting presents into the wheelie bin." "The wheelie bin." "I've lined it. It's clean. Cleanish." Bill held the costume at arm's length. "And how do we get the bin out?" "We wheel it out. Nobody in the history of British suburbia has ever questioned a person wheeling a bin. You could wheel a bin through a bank robbery and someone would hold the door." "That's true, actually," Bill admitted. "That's disturbingly true." "Thank you." He began, with enormous reluctance, to unzip the thing. "And if a child asks me for a balloon dog?" "Give them a balloon." "Just a balloon?" "Say it's a balloon *snake*. Children have no standards; they've only been alive four years." Molly checked her watch. "Party starts at two. We arrive at two-fifteen, looking harassed, because a punctual entertainer is a suspicious entertainer." Bill got one leg into the costume and paused, half-duck, half-man, entirely miserable. "Molly. Be honest with me. Is this the lowest we've ever gone?" Molly considered the question with genuine care, the way one considers a fine wine. "No," she said. "The nativity was lower. We stole a donkey." "We *borrowed* a donkey." "We borrowed it into a different postcode." She started the engine. "Zip up, Mister Wobbles. Think of the Lego."
created_at
"2026-07-25T13:15:18.248Z"
7/25/2026, 1:15:18 PM
model
"anthropic/claude-opus-5-20260723"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1724
moderation_latency
(null)
generation_time
21047
tokens_prompt
75
tokens_completion
764
native_tokens_prompt
93
native_tokens_completion
1106
native_tokens_completion_images
(null)
native_tokens_reasoning
0
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
num_fetches
(null)
web_search_engine
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"end_turn"
service_tier
"default"
usage
0.028115
router
(null)
provider_responses
0
endpoint_id
"76cb4608-f48c-483d-8da8-9957fb44244e"
id
"msg_011CdNqXQ2nDEMaB16zg4FxC"
is_byok
false
latency
1724
model_permaslug
"anthropic/claude-opus-5-20260723"
provider_name
"Amazon Bedrock"
status
200
user_agent
"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer
(null)
request_id
"req-1784985318-5msm8Mj5taXIZkusL9pY"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1784985318-SxLqAFF1nuTaJDxlwUt8"
upstream_id
"msg_011CdNqXQ2nDEMaB16zg4FxC"
total_cost
0.028115
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Amazon Bedrock"
response_cache_source_id
(null)
data_region
"global"
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Matches word count
n/a
neededClean
false
words
501
0.00%
Dialogue to Total Word Ratio
Ratio: 72.08%, Deviation: 22.08%
neededClean
false
wordsTotal
505
wordsDialogue
364
49.9995%