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Run: 2026-09-23-01M37Q62ZRSJT7W75KK8DTTDMQ
Run Details
Model:
Claude Opus 5.5 (Reasoning)
Test:
Dialogue tags
Scenario:
Write 200 words with 90% dialogue
Duration:
20.9s
Cost:
$0.035800
Provider:
Claude Platform on AWS
Evaluation summary
Score
Evaluator
Details Link
100.00%
Matches word count
(details)
91.26%
Dialogue to Total Word Ratio
(details)
95.6278%
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
"Right," said Molly, unrolling the map. "Timmy Pembrook's seventh birthday. Forty guests, forty presents, one bouncy castle." "Why's the castle circled?" "That's our escape route, Bill." "We're escaping on a bouncy castle?" "Through it. Nobody searches a bouncy castle. Too undignified." "What about the clown?" "The clown is you." "I'm not doing the clown again. Last time a toddler bit me." "He was teething. It wasn't personal." "It felt personal. What's your disguise?" "Magician. While everyone watches me pull a rabbit out of a hat, you pull the presents into a sack." "Do you have a rabbit?" "I have a guinea pig named Gerald. Same energy." "And the mums? Party mums are terrifying, Molly. They notice everything." "Which is why I've hired a decoy. Ice cream van, parked out front, playing Greensleeves on a loop." "Genius. Pure genius. What if Timmy recognises us?" "He's seven. He thinks his dad is a pirate." "Is his dad a pirate?" "Accountant. Stay focused." "And the getaway?" "Party bags, Bill. We leave with party bags like everyone else." Bill cracked his knuckles. "One question. Do we have to sing Happy Birthday?" "Obviously. Bill, we're professionals. We sing it beautifully, then we rob him blind."
created_at
"2026-09-23T18:06:58.571Z"
9/23/2026, 6:06:58 PM
model
"anthropic/claude-opus-5.5-20260921"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
5682
moderation_latency
(null)
generation_time
20884
tokens_prompt
75
tokens_completion
603
native_tokens_prompt
95
native_tokens_completion
1771
native_tokens_completion_images
(null)
native_tokens_reasoning
1268
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
0.0358
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer
(null)
request_id
"req-1790186818-qfqC20FXersF86xpwVDr"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1790186818-YB11LkBEDI0XI13mJml1"
upstream_id
"msg_011CfLpJMnJBFoqF6QDZyzgm"
provider_responses
0
endpoint_id
"3a2388bc-3740-4e64-a1f5-4e301726b6b9"
id
"msg_011CfLpJMnJBFoqF6QDZyzgm"
is_byok
false
latency
1189
model_permaslug
"anthropic/claude-opus-5.5-20260921"
provider_name
"Claude Platform on AWS"
status
200
total_cost
0.0358
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
200
91.26%
Dialogue to Total Word Ratio
Ratio: 95.50%, Deviation: 5.50%
neededClean
false
wordsTotal
200
wordsDialogue
191
95.6278%