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Run: 2026-09-23-01M37PJBD45Z9VTS0NGWCGC2H5
Run Details
Model:
Claude Opus 5.5 (Reasoning)
Test:
Dialogue tags
Scenario:
Write 200 words with 10% dialogue
Duration:
18.3s
Cost:
$0.031560
Provider:
Claude Platform on AWS
Evaluation summary
Score
Evaluator
Details Link
99.98%
Matches word count
(details)
100.00%
Dialogue to Total Word Ratio
(details)
99.9920%
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 getaway van, which was actually a borrowed ice cream truck that still played "Greensleeves" whenever someone touched the brakes. The blueprint was, technically, a birthday invitation. Seven-year-old Tyler Pemberton requested the pleasure of their company, or at least the company of anyone with a gift. Bill studied the crayon map on the back, tracing the route from the bouncy castle to the gift table with a trembling finger. He had cased the backyard twice that morning, disguised first as a gardener and then, after a small misunderstanding with a sprinkler, as a very wet gardener. "Clown costumes are in the back," Molly said. Bill paled. He had feared many things in his long criminal career: alarms, dogs, and the police. None compared to twenty sugar-fueled children and a piƱata. "What if they want balloon animals?" "Make snakes," Molly said. "Everything's a snake if you commit." She checked her watch. Cake would be served at three, and history proved that no parent watches the presents during cake. They would slip in, fill the laundry sacks, and vanish before the candles were blown out. Bill, meanwhile, practiced honking his red nose quietly, with grim determination.
created_at
"2026-09-23T17:56:11.833Z"
9/23/2026, 5:56:11 PM
model
"anthropic/claude-opus-5.5-20260921"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
5287
moderation_latency
(null)
generation_time
18219
tokens_prompt
75
tokens_completion
469
native_tokens_prompt
95
native_tokens_completion
1559
native_tokens_completion_images
(null)
native_tokens_reasoning
1143
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
0.03156
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer
(null)
request_id
"req-1790186171-ctiQUg0DHuaYZwEnAxov"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1790186171-DU27gvtvgjVylGDKeIXQ"
upstream_id
"msg_011CfLoUgX5n7Q1jYcvGs2NM"
provider_responses
0
endpoint_id
"3a2388bc-3740-4e64-a1f5-4e301726b6b9"
id
"msg_011CfLoUgX5n7Q1jYcvGs2NM"
is_byok
false
latency
1768
model_permaslug
"anthropic/claude-opus-5.5-20260921"
provider_name
"Claude Platform on AWS"
status
200
total_cost
0.03156
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
100.00%
Dialogue to Total Word Ratio
Ratio: 10.24%, Deviation: 0.24%
neededClean
false
wordsTotal
205
wordsDialogue
21
99.9920%