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Run: 2026-09-23-01M37PHKFJSMKAWG9F8SWHK2V3
Run Details
Model:
Claude Opus 5.5 (Reasoning)
Test:
Dialogue tags
Scenario:
Write 200 words with 50% dialogue
Duration:
22.2s
Cost:
$0.037880
Provider:
Claude Platform on AWS
Evaluation summary
Score
Evaluator
Details Link
100.00%
Matches word count
(details)
100.00%
Dialogue to Total Word Ratio
(details)
99.9992%
Overall
Model input
User/Human
You are a author of comedic heist books. Please write a 200 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
Molly unrolled the blueprint across the hood of the van. It was a crayon drawing of a bouncy castle. "This is the target," she said. "Timmy Pemberton's seventh birthday. Forty guests. Sixty presents, minimum." Bill squinted at it. "Why is the house purple?" "Timmy drew it himself. I paid him a lollipop." "You bribed the actual victim?" "I recruited an asset." Bill nodded slowly, as though this made perfect sense, then pulled a clown costume from his duffel bag. The wig was orange and alarmingly damp. "I go in as Bobo," he said. "Balloon animals. Total distraction." "Can you actually make balloon animals?" "I can make a snake." "Everything's a snake if you try hard enough." Molly tapped the crayon garage, where a scribbled mountain of boxes glittered with gold star stickers. Somewhere across town, a mother was wrapping a remote-control helicopter she would never see again. "Cake comes out at three," Molly said. "Every child faces the table. Every parent films it. That's our window." "How long do we get?" "Exactly one verse of Happy Birthday." Bill cracked his knuckles, adjusted his rubber nose, and stared grimly into the middle distance. "Then we sing slowly. Very, very slowly."
created_at
"2026-09-23T17:55:47.331Z"
9/23/2026, 5:55:47 PM
model
"anthropic/claude-opus-5.5-20260921"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
6985
moderation_latency
(null)
generation_time
22137
tokens_prompt
75
tokens_completion
606
native_tokens_prompt
95
native_tokens_completion
1875
native_tokens_completion_images
(null)
native_tokens_reasoning
1414
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-1790186147-9ohnvzekuxIaO2oK1yct"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1790186147-wSxrJ5jbp0HaqzcJRr17"
upstream_id
"msg_011CfLoSsogJAKEy8eQRbaxw"
provider_responses
0
endpoint_id
"3a2388bc-3740-4e64-a1f5-4e301726b6b9"
id
"msg_011CfLoSsogJAKEy8eQRbaxw"
is_byok
false
latency
1868
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
100.00%
Dialogue to Total Word Ratio
Ratio: 49.50%, Deviation: 0.50%
neededClean
false
wordsTotal
200
wordsDialogue
99
99.9992%