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Run: 2026-09-23-01M37P26152BM7726ZKTSH61FJ
Run Details
Model:
Claude Opus 5.5 (Reasoning)
Test:
Dialogue tags
Scenario:
Write 200 words with 50% dialogue
Duration:
23.8s
Cost:
$0.042420
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)
99.9904%
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 spread the blueprints across the hood of the van. They were a birthday invitation with a map drawn in purple crayon. "Two o'clock," she said. "Timmy Henderson turns seven. Forty guests. Maybe sixty presents." Bill squinted at the drawing. "Why exactly is the bouncy castle labeled 'danger'?" "Because it is danger. Children in bouncy castles are basically feral." He nodded slowly, adjusting the balloon animals stuffed in his coat. They squeaked whenever he breathed, which undermined his menace. "And my disguise?" "You're Mister Giggles, the clown. I'm your assistant, Glitter." "I genuinely hate clowns." "Everyone hates clowns. That's why nobody looks at them directly." Bill considered this, then pulled a squeaky horn from his pocket and honked it. Somewhere down the street, a dog began to howl. "What if the kids recognize us? We did rob the Morrison bar mitzvah." "Bill, they were thirteen. These are seven. Seven-year-olds can't identify anyone. They think I'm a hundred." "You're forty-two." "Exactly. Also, I'm keeping the pony." Molly rolled up the invitation and tucked it into her tote bag. Bill honked the horn once more, and the dog howled back in solidarity. "Right," she said. "Nobody touches the cake. Ever."
created_at
"2026-09-23T17:47:22.038Z"
9/23/2026, 5:47:22 PM
model
"anthropic/claude-opus-5.5-20260921"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
6968
moderation_latency
(null)
generation_time
23788
tokens_prompt
75
tokens_completion
597
native_tokens_prompt
95
native_tokens_completion
2102
native_tokens_completion_images
(null)
native_tokens_reasoning
1613
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
0.04242
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer
(null)
request_id
"req-1790185642-cZ3Ia9irO4CMjJXDNrgS"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1790185642-CjVZ0UVbqhJq2Y3dmexQ"
upstream_id
"msg_011CfLnodUSZyp1WDTTSxDb5"
provider_responses
0
endpoint_id
"3a2388bc-3740-4e64-a1f5-4e301726b6b9"
id
"msg_011CfLnodUSZyp1WDTTSxDb5"
is_byok
false
latency
1734
model_permaslug
"anthropic/claude-opus-5.5-20260921"
provider_name
"Claude Platform on AWS"
status
200
total_cost
0.04242
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
198
100.00%
Dialogue to Total Word Ratio
Ratio: 50.75%, Deviation: 0.75%
neededClean
false
wordsTotal
201
wordsDialogue
102
99.9904%