NC Bench
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Run: 2026-02-16-01KHK9NE5Z0ZKPY3VVPF70C0XE
Run Details
Model:
GPT-5 Nano
Test:
Dialogue tags
Scenario:
Write unattributed dialogue
Duration:
50.1s
Cost:
$0.001890
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
The small town bakery glowed with morning light, flour dust dancing in the air like tiny snowflakes. The display case twinkled with lemon tarts, and the oven gave a patient sigh. Two figures leaned near the register, voices lowered to a conspiratorial hush. "Everything smells like triumph and trouble today." "That's what happens when a recipe goes missing." A bell tinkled as a customer shuffled in, the door sighing shut behind them. "Check the ledger again." "Checked. Not there, not in the drawer. Nowhere." "Except perhaps in the hands of someone who shouldn’t have it." The room seemed to hold its breath, flour-clouds drifting like pale snow. "The loaf is rising fine." "But the real mystery—" "Is who wants the old family recipe rewritten." They moved closer to the counter, where a faded notebook lay half-hidden beneath a row of napkins, its cover damp with fingerprints and something else, something sweet and dangerous. "Someone must have copied it." "Or stolen it for keeps." The notebook's page fluttered, and a pencil smeared a triangle of ink across the margins, like a breadcrumb to a hidden shelf.
created_at
"2026-02-16T13:19:52.303927+00:00"
2/16/2026, 1:19:52 PM
model
"openai/gpt-5-nano-2025-08-07"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
5435
moderation_latency
(null)
generation_time
49837
tokens_prompt
81
tokens_completion
1619
native_tokens_prompt
67
native_tokens_completion
4716
native_tokens_completion_images
0
native_tokens_reasoning
4416
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
0.00188975
router
(null)
provider_responses
0
id
"resp_0e3b5e49d9d2a9fe0169931945e7e0819780a7060618a61ff7"
status
200
is_byok
false
latency
151
endpoint_id
"50329d77-04e1-4979-a184-c33030289476"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-5-nano-2025-08-07"
api_type
"completions"
id
"gen-1771247941-Ym4twwityuAp4gexJY1f"
upstream_id
"resp_0e3b5e49d9d2a9fe0169931945e7e0819780a7060618a61ff7"
total_cost
0.00188975
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)