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Run: 2026-09-23-01M37PHST1WB90VNYBYP1JT6MW
Run Details
Model:
Claude Opus 5.5 (Reasoning)
Test:
Dialogue tags
Scenario:
Write 200 words with 90% dialogue
Duration:
19.0s
Cost:
$0.035260
Provider:
Claude Platform on AWS
Evaluation summary
Score
Evaluator
Details Link
99.98%
Matches word count
(details)
98.40%
Dialogue to Total Word Ratio
(details)
99.1914%
Overall
Model input
User/Human
You are a author of comedic heist books. Please write a 200 word scene that has 90% 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 Hendersons' kid turns seven Saturday," Molly said, unrolling a crayon map. "Forty guests. Forty presents." "Why is the map in crayon?" "I stole it from the kid. Authenticity, Bill." "Right. So how do we get in?" "We go as entertainment. I'm a magician. You're a clown." "Why am I the clown?" "Because you already own the shoes." "Those are orthopedic, Molly." "They're big and sad. Kids love big and sad. Now, while I pull a rabbit out of a hat, you load the presents into the van." "We don't have a rabbit." "We have a hamster. Nobody's counting ears." "And if someone notices forty presents vanishing?" "It's a magic show, Bill. That's the trick. They'll applaud." "What about the mums? Party mums are terrifying. They've got juice boxes and no mercy." "Distraction. You'll make balloon animals." "I can only make a snake." "Then you'll make forty snakes, slowly, with great confidence." "What's our getaway?" "The bouncy castle. We deflate it, hide inside, and roll." "That's not a plan. That's a nightmare with a pump." "Bill, every great heist starts as a nightmare." Bill sighed and adjusted his enormous shoes. "Does it end with prison?" "Only the bad ones. Pack the hamster."
created_at
"2026-09-23T17:55:53.817Z"
9/23/2026, 5:55:53 PM
model
"anthropic/claude-opus-5.5-20260921"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
5968
moderation_latency
(null)
generation_time
18964
tokens_prompt
75
tokens_completion
586
native_tokens_prompt
95
native_tokens_completion
1744
native_tokens_completion_images
(null)
native_tokens_reasoning
1261
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
0.03526
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer
(null)
request_id
"req-1790186153-5w3oMUm2nj1kSnhvE5wt"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1790186153-PKbJnnlHcIZ8kNRgWZeF"
upstream_id
"msg_011CfLoTMmC3LpJmx7JP9Ecq"
provider_responses
0
endpoint_id
"3a2388bc-3740-4e64-a1f5-4e301726b6b9"
id
"msg_011CfLoTMmC3LpJmx7JP9Ecq"
is_byok
false
latency
1837
model_permaslug
"anthropic/claude-opus-5.5-20260921"
provider_name
"Claude Platform on AWS"
status
200
total_cost
0.03526
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Claude Platform on AWS"
response_cache_source_id
(null)
data_region
"global"
workspace_id
"97e315e5-d303-487d-83c1-83180e8a13d4"
Evaluation details
Result
Evaluator
Details
Meta Data
99.98%
Matches word count
n/a
neededClean
false
words
202
98.40%
Dialogue to Total Word Ratio
Ratio: 93.56%, Deviation: 3.56%
neededClean
false
wordsTotal
202
wordsDialogue
189
99.1914%