NC Bench
Overview
About
Tests
Models
Model
Claude Opus 4.5
Test
Dialogue tags
Scenario
Write unattributed dialogue
Run ID
2026-02-08-01KGYX63020CKQEYFBXT6E6W21
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 smell of cinnamon rolls filled the small bakery as morning light streamed through the checkered curtains. A woman in a flour-dusted apron leaned across the counter, lowering her voice. "Did you hear about what they found in Margaret's garden shed?" "The whole town's heard by now. A genuine human skeleton, can you imagine?" "I always said there was something off about that property. Remember when old Harold lived there? Never let anyone past the front porch." "That was thirty years ago. You don't think—" "I don't think anything. I just bake bread and mind my business." "Since when?" A nervous laugh echoed off the vintage cake display. The bell above the door chimed, and both women straightened immediately. "Two blueberry scones, please. And whatever information you've already shared with half the neighborhood." "Sheriff! We were just discussing the weather." "In December, with a skeleton turning up? Sure you were." A badge glinted as coins dropped into the tip jar. "If either of you remembers anything actually useful about Harold Pemberton, you know where to find me." The door swung shut. Silence lasted exactly four seconds. "Well, that confirms it's Harold's place they're investigating."
created_at
"2026-02-08T15:16:16.751925+00:00"
Sunday, February 8th, 2026 at 3:16:16 PM GMT+00:00
model
"anthropic/claude-4.5-opus-20251124"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1444
moderation_latency
(null)
generation_time
8866
tokens_prompt
61
tokens_completion
253
native_tokens_prompt
77
native_tokens_completion
288
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
0.007585
router
(null)
provider_responses
0
id
"msg_01JLuCxfL8U93rv8KW7nhg3v"
status
200
is_byok
false
latency
1444
endpoint_id
"be883404-eb42-4b2d-b6e4-c7daa3aa8d62"
provider_name
"Anthropic"
model_permaslug
"anthropic/claude-4.5-opus-20251124"
api_type
"completions"
id
"gen-1770563767-WxLNpSpLhX5qbdCNiU9n"
upstream_id
"msg_01JLuCxfL8U93rv8KW7nhg3v"
total_cost
0.007585
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)