NC Bench
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Run: 2026-02-16-01KHK9DVG5QZ2EQQ44AVCS78TD
Run Details
Model:
GPT-5 Nano
Test:
Dialogue tags
Scenario:
Write unattributed dialogue
Duration:
1m 18s
Cost:
$0.003839
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
Sunlight spilled across the flour-dusted counter of Willow Lane Bakery. The bell above the door tinkled as Nell, the town librarian, stepped inside, scarf braided with peppermint stripes. Ivy, the bakery’s owner, brushed flour from her hands and surveyed the glass case. Grandma Hager’s Lemon-Ricotta Tart sat in a leather notebook, waiting for next week’s bake-off. The town waited with gentle breath for the truth and a perfect crust. "The recipe is gone." "Gone where?" "From the notebook—someone slit the spine and pulled a page." "Who would do that?" "Someone hoping to spoil our entry." "Check the sugar jar; thieves hide behind sweetness." "Behind the yeast, an envelope—greasy and green." "What does it say?" "'Meet me by the back door at noon.'" "That’s a clue, not a confession." "'Trade for the recipe,' the note promises." "A trap or a clue to a friend?" "Let’s wait, quiet as flour dust." "The clock ticks; a soft thump at the back door." "We’ll face it together." "Right. If it’s a rival, we’ll bake better." "The door opens; the missing page is tucked in a pocket." "So it was misfiled, not stolen." "And the note was a nudge from a friend." "Then let the baking begin."
created_at
"2026-02-16T13:16:12.255999+00:00"
2/16/2026, 1:16:12 PM
model
"openai/gpt-5-nano-2025-08-07"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
3814
moderation_latency
(null)
generation_time
78064
tokens_prompt
81
tokens_completion
1789
native_tokens_prompt
67
native_tokens_completion
9590
native_tokens_completion_images
0
native_tokens_reasoning
9280
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
0.00383935
router
(null)
provider_responses
0
id
"resp_03bbb4354b4b5a3d016993184d6b108194b2274c137e64d4c6"
status
200
is_byok
false
latency
145
endpoint_id
"50329d77-04e1-4979-a184-c33030289476"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-5-nano-2025-08-07"
api_type
"completions"
id
"gen-1771247693-nPPgPDGpBUcLlnYCQhp0"
upstream_id
"resp_03bbb4354b4b5a3d016993184d6b108194b2274c137e64d4c6"
total_cost
0.00383935
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
Evaluation details
Result
Evaluator
Details
Meta Data
100.0000%
Count dialogue tags
n/a
neededClean
false
dialogueTags
(empty)