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Run: 2026-05-31-01KSYXAATBFVMG9QPK2V4WVRG7
Run Details
Model:
Claude Opus 4.8 (Reasoning, High)
Test:
Dialogue tags
Scenario:
Write 200 words with 90% dialogue
Duration:
9.3s
Cost:
$0.012315
Provider:
Anthropic
Evaluation summary
Score
Evaluator
Details Link
100.00%
Matches word count
(details)
66.26%
Dialogue to Total Word Ratio
(details)
83.1276%
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're really doing this?" Molly whispered. "Absolutely," Bill said. "Forty kids, forty presents. We'll be rich." "They're seven-year-olds, Bill. The presents are coloring books." "And cash. Grandparents always slip in cash." "How do we get past security?" "Security? It's a birthday party at a bounce house." "There's a clown." "The clown is not security, Molly." "He looked at me funny." "Everyone looks at you funny." "So what's the plan?" "We dress as parents. We blend in. We grab the gift table, we walk out." "I don't have kids." "Neither does half the room. Just complain about nap schedules and gluten." "What if they ask which kid is mine?" "Point at the loudest one and sigh." "And the cake?" "What about the cake?" "Are we taking the cake?" "We're not taking the cake, Molly." "It's a lot of cake." "Focus! Gifts only. In and out, ninety seconds." "What about the piñata?" "What about it?" "It's full of candy. That's basically free money." "Fine. Gifts and the piñata." "And the cake." "And the—no! Not the cake!" "You're no fun." "We're committing a crime, Molly. It's not supposed to be fun." "Then why am I wearing a party hat?" "...Camouflage."
created_at
"2026-05-31T11:39:42.809Z"
5/31/2026, 11:39:42 AM
model
"anthropic/claude-4.8-opus-20260528"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1011
moderation_latency
(null)
generation_time
9123
tokens_prompt
77
tokens_completion
348
native_tokens_prompt
93
native_tokens_completion
474
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
0.012315
router
(null)
provider_responses
0
endpoint_id
"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id
"msg_01Kjk7CMGZkf3LwKB5jE2TuH"
is_byok
false
latency
1011
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-1780227582-5i6FcSlVhGLOc2cDSrUq"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1780227582-oluNNvxlNxJVsgleCz5v"
upstream_id
"msg_01Kjk7CMGZkf3LwKB5jE2TuH"
total_cost
0.012315
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
66.26%
Dialogue to Total Word Ratio
Ratio: 98.01%, Deviation: 8.01%
neededClean
false
wordsTotal
201
wordsDialogue
197
83.1276%