NC Bench
Overview
About
Tests
Categories
Models
Vendors
Compare
Run: 2026-07-25-01KYCRG2TJKY8HN3277YF1S7TH
Run Details
Model:
Claude Opus 5 (Reasoning)
Test:
Dialogue tags
Scenario:
Write 200 words with 10% dialogue
Duration:
10.3s
Cost:
$0.013215
Provider:
Amazon Bedrock
Evaluation summary
Score
Evaluator
Details Link
99.98%
Matches word count
(details)
90.71%
Dialogue to Total Word Ratio
(details)
95.3462%
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
Messages
Meta
AI
Molly spread the blueprint across the hood of the van, smoothing it flat with the reverence of a surgeon. It was, in fact, a placemat from the Happy Otter Family Diner, upon which she had drawn the Kowalski backyard in ketchup and blue crayon. The bouncy castle was a lopsided rectangle. The present table was a star. Bill studied it while eating a pickle. He had ideas about pickles and about most things, and had spent the morning insisting the clown costume was a tactical necessity rather than a personal fantasy. The wig sat in his lap like a sleeping poodle. "Nobody suspects a clown," he said. "Everybody suspects a clown, Bill." The party started at two. By 2:15, according to Molly's calculations, seventeen children would be hurling themselves into an inflatable structure while their parents drifted toward the cooler, and for roughly nine minutes the present table would stand unguarded, glittering, wrapped in paper thin as a promise. They would need a laundry hamper, two garbage bags, and the will to look a six-year-old in the eye. Bill honked his nose experimentally. Molly closed her eyes and counted to ten, then folded the placemat into her jacket, unspeakably calm, entirely committed.
created_at
"2026-07-25T13:47:37.69Z"
7/25/2026, 1:47:37 PM
model
"anthropic/claude-opus-5-20260723"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
3503
moderation_latency
126
generation_time
10054
tokens_prompt
75
tokens_completion
361
native_tokens_prompt
93
native_tokens_completion
510
native_tokens_completion_images
(null)
native_tokens_reasoning
55
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
0.013215
router
(null)
provider_responses
0
endpoint_id
"76cb4608-f48c-483d-8da8-9957fb44244e"
id
"msg_011CdNszNrKkfKbR4R5greHX"
is_byok
false
latency
1266
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-1784987257-sJax7tubcTl1IsdSmgkg"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1784987257-d8S8V5PTrQ3o3DoEb5C6"
upstream_id
"msg_011CdNszNrKkfKbR4R5greHX"
total_cost
0.013215
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
99.98%
Matches word count
n/a
neededClean
false
words
202
90.71%
Dialogue to Total Word Ratio
Ratio: 4.41%, Deviation: 5.59%
neededClean
false
wordsTotal
204
wordsDialogue
9
95.3462%