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Run: 2026-06-01-01KT1HN8D5V75RPBKXT1KCGMAH
Run Details
Model:
Claude Opus 4.8 (Reasoning, Low)
Test:
Dialogue tags
Scenario:
Write 200 words with 90% dialogue
Duration:
10.0s
Cost:
$0.013265
Provider:
Anthropic
Evaluation summary
Score
Evaluator
Details Link
100.00%
Matches word count
(details)
66.53%
Dialogue to Total Word Ratio
(details)
83.2636%
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
"So we just walk in?" Bill asked. "We walk in," Molly confirmed. "Dressed as clowns." "Dressed as clowns." "Molly, I hate clowns." "Everyone hates clowns. That's the point. Nobody looks too closely at a clown." "And the presents?" "Big sack. Clowns carry big sacks." "That's Santa." "Santa, clowns, same energy." "It is absolutely not the same energy." "Bill, focus. We grab the gifts, we honk a few horns, we waddle out the back." "What if a kid cries?" "Kids always cry. That's just ambiance." "And the parents?" "Distracted. Cake, juice, existential dread. They won't even notice." "What about the magician they hired?" "What magician?" "There's always a magician, Molly." "Then we steal his rabbit too. Bonus." "You want me to pickpocket a magician." "I want you to commit, Bill." "This is the worst plan you've ever had." "Worse than the petting zoo?" "...Nothing's worse than the petting zoo." "Exactly. So we're improving." "My eyebrows still haven't grown back." "Llamas hold grudges. Lesson learned. Now grab your wig." "It smells like sadness and balloons." "That's the smell of money, Bill." "It's the smell of regret." "Same energy." "Stop saying that!" "Put the nose on. We've got a party to ruin."
created_at
"2026-06-01T12:13:41.163Z"
6/1/2026, 12:13:41 PM
model
"anthropic/claude-4.8-opus-20260528"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1231
moderation_latency
(null)
generation_time
9974
tokens_prompt
77
tokens_completion
361
native_tokens_prompt
93
native_tokens_completion
512
native_tokens_completion_images
(null)
native_tokens_reasoning
0
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
0.013265
router
(null)
provider_responses
0
endpoint_id
"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id
"msg_019jtpdwJPuMMczLPxF7YCWx"
is_byok
false
latency
1231
model_permaslug
"anthropic/claude-4.8-opus-20260528"
provider_name
"Anthropic"
status
200
user_agent
"langchainjs-openai/1.0.0 ((node/v24.16.0; linux; x64))"
http_referer
(null)
request_id
"req-1780316021-GYiCblB5hhMyU86zHgsB"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1780316021-nhlQrnpFUKVvwDR7YigX"
upstream_id
"msg_019jtpdwJPuMMczLPxF7YCWx"
total_cost
0.013265
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Anthropic"
response_cache_source_id
(null)
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Matches word count
n/a
neededClean
false
words
199
66.53%
Dialogue to Total Word Ratio
Ratio: 97.99%, Deviation: 7.99%
neededClean
false
wordsTotal
199
wordsDialogue
195
83.2636%