NC Bench
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Run: 2026-02-16-01KHK9V0FCBAKTE8G3RADAJKRA
Run Details
Model:
GPT-5 Nano
Test:
Dialogue tags
Scenario:
Write unattributed dialogue
Duration:
1m 14s
Cost:
$0.002310
Provider:
OpenAI
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
[In a small-town bakery, sunlight spills across a counter lined with pastel tarts. Flour dust motes drift in a warm beam. Two figures stand near the oven: a flour-dusted baker and a visiting journalist who loves quiet mysteries. A lavender-scented tray rests on the rack.] "That lavender scone is a charm against the chill,"
the baker says
. "Chill isn't the only thing in the air,"
the journalist replies
. "The town's whispering about the missing recipe book." "Missing recipe book?" "Yes. And a note tucked under the binder: 'Time will tell when the truth warms.'" "Who would hide it?" "Someone who fears what the old recipes might reveal." "And the note—where was it found?" "Stuck to the recipe binder with a crumb of sugar." "A crumb? Then the thief was careless." "Maybe careless, or sending a signal to the real thief in town." "We should check the back room after hours, but quietly." "Quiet is the only way to catch a shadow without waking the town." "Meet me at dusk, by the flour sacks, if you dare." "Dusk it is. And may the truth rise with the bread." "Agreed. And bring the sugar donuts; we'll need energy for the stakeout." "Dusk, then."
created_at
"2026-02-16T13:23:18.554584+00:00"
2/16/2026, 1:23:18 PM
model
"openai/gpt-5-nano-2025-08-07"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
11115
moderation_latency
(null)
generation_time
73278
tokens_prompt
81
tokens_completion
1401
native_tokens_prompt
67
native_tokens_completion
5767
native_tokens_completion_images
0
native_tokens_reasoning
5440
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
"completed"
usage
0.00231015
router
(null)
provider_responses
0
id
"resp_064d0b9413d4a16401699319fc7de88197af047a9ab6e4e21e"
status
200
is_byok
false
latency
167
endpoint_id
"50329d77-04e1-4979-a184-c33030289476"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-5-nano-2025-08-07"
api_type
"completions"
id
"gen-1771248124-hCQ01U0MDQqVSB4JtsXl"
upstream_id
"resp_064d0b9413d4a16401699319fc7de88197af047a9ab6e4e21e"
total_cost
0.00231015
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
Evaluation details
Result
Evaluator
Details
Meta Data
13.5335%
Count dialogue tags
n/a
neededClean
false
dialogueTags
0
"the baker says"
1
"the journalist replies"