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Run: 2026-06-01-01KT1H4AHBCNQSKKXA1AKBPTJE
Run Details
Model:
Claude Opus 4.8 (Reasoning, Low)
Test:
Dialogue tags
Scenario:
Write unattributed dialogue
Duration:
10.0s
Cost:
$0.011335
Provider:
Anthropic
Evaluation summary
Score
Evaluator
Details Link
100.00%
Count dialogue tags
(details)
Model input
User/Human
You are an expert novel writer in the cozy mystery genre. Write a scene of about 200 words, with dialogue between two characters. The dialogue should be unattributed, meaning the speaker is not explicitly mentioned. The scene should be set in a small town bakery. Only return the story, nothing else.
Model response
Messages
Meta
AI
The bell above the door chimed as warm air rushed out, thick with cinnamon and sugar. "You're here early. Couldn't sleep either?" "Who can sleep after what happened? Poor Mr. Abernathy, found right there by the war memorial." "Keep your voice down. Half the town's already whispering, and I'd rather not add to it." "I'm only saying what everyone's thinking. He wasn't exactly beloved, was he? Always complaining about the noise, the parking, the bakery smells drifting into his shop." "That hardly makes someone a murderer. Besides, the police said it could've been his heart." "At two in the morning? Outside? In November? Use your head." "Here, take this cruller and stop speculating before you talk yourself into trouble." "You don't find it strange, then? That his ledger went missing the same night?" "How could you possibly know about the ledger?" "Margaret told me. She cleans the office next door, and the door was wide open when she arrived. Drawers pulled out, papers everywhere." A long silence stretched between them. Somewhere in the back, a timer dinged. "That's my scones. Don't go anywhere." "Wait—you're not telling me everything, are you? You knew him better than most." "Some things, dear, are better left in the oven."
created_at
"2026-06-01T12:04:26.288Z"
6/1/2026, 12:04:26 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
9941
tokens_prompt
81
tokens_completion
335
native_tokens_prompt
107
native_tokens_completion
432
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
0.011335
router
(null)
provider_responses
0
endpoint_id
"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id
"msg_012a8wrS7rZsQpqSuHwEPr43"
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-1780315466-lDqVtaCS2rQmO5y2mFOO"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1780315466-QcfTR6fqKhCnk1TIXemf"
upstream_id
"msg_012a8wrS7rZsQpqSuHwEPr43"
total_cost
0.011335
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Anthropic"
response_cache_source_id
(null)
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Count dialogue tags
n/a
neededClean
false
dialogueTags
(empty)