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Run: 2026-05-31-01KSYXCAG1V5SB1ZFR593ZFERB
Run Details
Model:
Claude Opus 4.8 (Reasoning, High)
Test:
Dialogue tags
Scenario:
Write unattributed dialogue
Duration:
10.1s
Cost:
$0.011735
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 jingled as the morning light spilled across the flour-dusted counter. "You're here early. Couldn't sleep either?" "Not a wink. Not after what happened to poor Mr. Abernathy." "Terrible business, that. Right here in our little town. Can you believe it?" "I baked three batches of cinnamon rolls just to keep my hands busy. Here, take one. You look like you need it." "Bless you. Though I don't know how you can think of food at a time like this." "Baking calms me. Always has. Now, tell me everything. You found him, didn't you?" "By the fountain, yes. Awful. But here's the strange part—his shoes were spotless. Not a speck of mud, and it'd rained all night." "Spotless? That's odd. He walked everywhere, that man. Through every puddle in the square." "Exactly what I thought. Which means—" "He didn't walk to the fountain at all. Someone brought him there." "Now you see why I couldn't sleep." "Drink your coffee. We're going to need clear heads." "We? Oh, no. We are not getting involved. Remember last spring?" "How could I forget? We solved it, didn't we?" "Barely. With our reputations and my good china intact by sheer luck." "More cinnamon roll?" "...Pass the icing."
created_at
"2026-05-31T11:40:48.013Z"
5/31/2026, 11:40:48 AM
model
"anthropic/claude-4.8-opus-20260528"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1270
moderation_latency
(null)
generation_time
10102
tokens_prompt
81
tokens_completion
331
native_tokens_prompt
107
native_tokens_completion
448
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
0.011735
router
(null)
provider_responses
0
endpoint_id
"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id
"msg_013mv9kuHn7T4zeB5TXyufQW"
is_byok
false
latency
1269
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-1780227648-zc5scAOcEYUiwDv4vX2O"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1780227648-9mfB4k7j6V74H2PIxSWw"
upstream_id
"msg_013mv9kuHn7T4zeB5TXyufQW"
total_cost
0.011735
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)