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Run: 2026-09-23-01M37Q9YM3W7H32ZAFKAFAGN5Z
Run Details
Model:
Claude Opus 5.5 (Reasoning)
Test:
Dialogue tags
Scenario:
Write 200 words with 90% dialogue
Duration:
21.1s
Cost:
$0.037880
Provider:
Claude Platform on AWS
Evaluation summary
Score
Evaluator
Details Link
100.00%
Matches word count
(details)
87.69%
Dialogue to Total Word Ratio
(details)
93.8460%
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
"Okay, Bill, walk me through it one more time." "Right. Six o'clock, the Hendersons' backyard. Little Timmy turns seven. Forty kids, one bouncy castle, a mountain of presents." "And our way in?" "I'm the clown." "You're afraid of clowns." "Which is why I'll be so convincing. Nobody expects a terrified clown to be a criminal." "Fine. What am I?" "You're the magician. You make the presents disappear. Literally." "I don't know any magic, Bill." "You don't need magic. You need a very big sack and confidence." "And the parents?" "Distracted by the cake. I've hired a second clown to drop it." "Is the second clown also afraid of clowns?" "Nobody's asked him." "What about the kids? Kids notice everything." "That's the genius part. We tell them it's a game. Whoever helps load the van gets a balloon animal." "You can't make balloon animals." "I can make balloon snakes." "Those are just balloons." "To a seven-year-old, that's a snake." Molly sighed and rubbed her temples. "Bill, what's our getaway?" "Pony rides, obviously." "We are not escaping on a pony." "Two ponies, Molly. I'm not an animal." "And the presents?" "The ponies carry them." "Bill." Bill beamed. "Very, very strong ponies."
created_at
"2026-09-23T18:09:05.172Z"
9/23/2026, 6:09:05 PM
model
"anthropic/claude-opus-5.5-20260921"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
21074
moderation_latency
(null)
generation_time
21074
tokens_prompt
75
tokens_completion
522
native_tokens_prompt
95
native_tokens_completion
1875
native_tokens_completion_images
(null)
native_tokens_reasoning
1386
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
0.03788
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer
(null)
request_id
"req-1790186945-eULulOcaWNRhLsXkurxB"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1790186945-ZcvCDlcUc1dRd3tRAmhC"
upstream_id
"msg_011CfLpThZg78EnYBJMzRZkK"
provider_responses
0
endpoint_id
"3a2388bc-3740-4e64-a1f5-4e301726b6b9"
id
"msg_011CfLpThZg78EnYBJMzRZkK"
is_byok
false
latency
1902
model_permaslug
"anthropic/claude-opus-5.5-20260921"
provider_name
"Claude Platform on AWS"
status
200
total_cost
0.03788
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
100.00%
Matches word count
n/a
neededClean
false
words
199
87.69%
Dialogue to Total Word Ratio
Ratio: 96.02%, Deviation: 6.02%
neededClean
false
wordsTotal
201
wordsDialogue
193
93.8460%