NC Bench
Overview
About
Tests
Models
Model
Claude Sonnet 4.5
Test
Dialogue tags
Scenario
Write unattributed dialogue
Run ID
2026-02-08-01KGYZ3BTMVTZ427K6ZPR5ZVWZ
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 Martha entered, bringing a gust of autumn air with her. "You're here early. Couldn't sleep either?" "Not a wink. Every time I closed my eyes, I kept seeing poor Harold slumped over that table." "The police said it was natural causes." "Natural causes? He was sixty-two and healthy as a horse. And did you notice his coffee cup?" "What about it?" "It was on the wrong side. Harold was left-handed. Always put his cup on the left." "Maybe he moved it." "Harold? That man was a creature of habit. Same table, same order, same everything for fifteen years." A pause. The scent of rising dough filled the silence. "You think someone..." "I'm not saying anything. Just that something feels off. And I saw Diane leaving through the back just before I found him." "Diane from the bookshop? She wouldn't hurt a fly." "People change when there's money involved. Didn't you hear? Harold was about to foreclose on her shop." The oven timer dinged, sharp and insistent. "Lord help us. You really think we have a murderer in Maplewood?"
created_at
"2026-02-08T15:49:42.231164+00:00"
Sunday, February 8th, 2026 at 3:49:42 PM GMT+00:00
model
"anthropic/claude-4.5-sonnet-20250929"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1235
moderation_latency
219
generation_time
6514
tokens_prompt
61
tokens_completion
245
native_tokens_prompt
77
native_tokens_completion
283
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
0.004476
router
(null)
provider_responses
0
id
"ddc07c06-acb7-4305-8425-72a3a0078176"
status
200
is_byok
false
latency
1235
endpoint_id
"d8bee848-f020-454a-b2be-4a7ce868f99f"
provider_name
"Amazon Bedrock"
model_permaslug
"anthropic/claude-4.5-sonnet-20250929"
api_type
"completions"
id
"gen-1770565775-imYVoAfW6vXNYzE0Cou4"
upstream_id
"ddc07c06-acb7-4305-8425-72a3a0078176"
total_cost
0.004476
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Amazon Bedrock"
Evaluation details
Result
Evaluator
Details
Meta Data
100.0000%
Count dialogue tags
n/a
neededClean
false
dialogueTags
(empty)