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Run: 2026-06-01-01KT1HHK7DK27EKS0252BKTGZK
Run Details
Model:
Claude Opus 4.8 (Reasoning, Low)
Test:
Dialogue tags
Scenario:
Write 200 words with 50% dialogue
Duration:
8.9s
Cost:
$0.012690
Provider:
Anthropic
Evaluation summary
Score
Evaluator
Details Link
100.00%
Matches word count
(details)
0.00%
Dialogue to Total Word Ratio
(details)
49.9998%
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 blueprint across the table, smoothing its wrinkled corners. "The bounce house is our blind spot. No cameras, no parents, just chaos." Bill squinted at the diagram. "And the presents?" "Stacked by the gift table. Unguarded after cake time." "Cake time," Bill repeated, nodding slowly. "When's that?" "Two o'clock. Right after the magician." He frowned. "There's a magician?" "Focus, Bill." Molly tapped the paper. "We slip in dressed as clowns. Nobody questions clowns at a birthday party." "I hate clowns," Bill muttered. "They give me hives." "You'll survive." She handed him a red foam nose. "Put this on." He held it like a dead mouse. "This is undignified." "Stealing from eight-year-olds isn't?" Bill considered this. "Fair point." "We grab the gifts, stuff them in the piñata bag, and walk out the back." "What about the piñata?" Molly paused. "What about it?" "Won't somebody notice it's full of PlayStations instead of candy?" She stared at him. "That's... actually a problem." "I have my moments." "Fine. We use garbage bags." She rolled up the blueprint triumphantly. "By three o'clock, we'll be rich, and forty children will be crying." Bill smiled, slipping on the nose. "Now that's a happy birthday."
created_at
"2026-06-01T12:11:41.17Z"
6/1/2026, 12:11:41 PM
model
"anthropic/claude-4.8-opus-20260528"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1104
moderation_latency
(null)
generation_time
8901
tokens_prompt
77
tokens_completion
343
native_tokens_prompt
93
native_tokens_completion
489
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
0.01269
router
(null)
provider_responses
0
endpoint_id
"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id
"msg_01GcZAYsPiVmDHx2hFY7y7K2"
is_byok
false
latency
1104
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-1780315901-K3CCJabJCSizXfOZIt7I"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1780315901-2pC9ym3OvttdATFkiUPj"
upstream_id
"msg_01GcZAYsPiVmDHx2hFY7y7K2"
total_cost
0.01269
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
0.00%
Dialogue to Total Word Ratio
Ratio: 68.66%, Deviation: 18.66%
neededClean
false
wordsTotal
201
wordsDialogue
138
49.9998%