NC Bench
Overview
About
Tests
Models
Model
Claude Opus 4.5
Test
Dialogue tags
Scenario
Write unattributed dialogue
Run ID
2026-02-08-01KGYZ12SZ4B5K63R0PX8MG626
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 morning sun streamed through the front window of Sweet Crumbs Bakery, casting golden light across the display case filled with fresh pastries. The bell above the door chimed as a familiar figure stepped inside, bringing with her the scent of autumn leaves. "You're here early. Couldn't sleep either?" "Not after what happened at the library last night. I keep thinking about poor Harold slumped over that atlas." "The police are calling it natural causes, you know. Heart attack." "Harold walked five miles every morning and hadn't touched sugar in thirty years. That man's heart was stronger than mine." "What exactly are you suggesting?" "I'm suggesting that someone wanted him quiet before he could finish his research into the town's founding families." The espresso machine hissed and sputtered. A cranberry scone was slid across the counter on a delicate china plate. "Be careful. The Pembrooks have deep roots here. Deeper than anyone knows." "That's precisely what Harold was uncovering. He told me he found something in the old church records. Something that would change everything." "And now he's dead." "Exactly. Now, how much do I owe you for the scone?"
created_at
"2026-02-08T15:48:29.844206+00:00"
Sunday, February 8th, 2026 at 3:48:29 PM GMT+00:00
model
"anthropic/claude-4.5-opus-20251124"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1705
moderation_latency
(null)
generation_time
8806
tokens_prompt
61
tokens_completion
243
native_tokens_prompt
77
native_tokens_completion
279
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)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"stop"
usage
0.00736
router
(null)
provider_responses
0
id
"msg_01ME7wWULZkdtTu4hqwaExVw"
status
200
is_byok
false
latency
1705
endpoint_id
"be883404-eb42-4b2d-b6e4-c7daa3aa8d62"
provider_name
"Anthropic"
model_permaslug
"anthropic/claude-4.5-opus-20251124"
api_type
"completions"
id
"gen-1770565700-LrMsPYCffi0gu8xIRgcf"
upstream_id
"msg_01ME7wWULZkdtTu4hqwaExVw"
total_cost
0.00736
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Anthropic"
Evaluation details
Result
Evaluator
Details
Meta Data
100.0000%
Count dialogue tags
n/a
neededClean
false
dialogueTags
(empty)