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Run: 2026-02-16-01KHKAXH3WG0B9PK7TH0Q7WZ6W
Run Details
Model:
GPT-5 Nano
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
26.6s
Cost:
$0.000952
Provider:
OpenAI
Model input
User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.
Model response
Messages
Meta
AI
Fog pressed against the harbor as dawn breathed its secrets. A lone lamp flickered, throwing gold across rain slick cobblestones. From the pier, a bell tolled once and stopped mysteriously. A body lay there, pale beneath drifting cloak of mist. The tide hummed softly, as if listening for a confession. Detective Lior arrived quietly, notebook ready, questions already forming tonight. A gull cried overhead, as if urging someone to speak. Somewhere a radio hissed, reporting nothing but rain and wind. In the shuttered house, whispers stitched clues into silence carefully. Every shadow waited, wanting someone to name the culprit tonight.
created_at
"2026-02-16T13:41:22.658203+00:00"
2/16/2026, 1:41:22 PM
model
"openai/gpt-5-nano-2025-08-07"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
2321
moderation_latency
(null)
generation_time
25750
tokens_prompt
46
tokens_completion
1153
native_tokens_prompt
41
native_tokens_completion
2374
native_tokens_completion_images
0
native_tokens_reasoning
2176
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
0.00095165
router
(null)
provider_responses
0
id
"resp_08aad5695e2c9efc0169931e67aa5c819794e0a70e5a9284b5"
status
200
is_byok
false
latency
187
endpoint_id
"50329d77-04e1-4979-a184-c33030289476"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-5-nano-2025-08-07"
api_type
"completions"
id
"gen-1771249255-HAg9t3wJsDMzLan33Hls"
upstream_id
"resp_08aad5695e2c9efc0169931e67aa5c819794e0a70e5a9284b5"
total_cost
0.00095165
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
Evaluation details
Result
Evaluator
Details
Meta Data
100.0000%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
10
1
10
2
10
3
10
4
10
5
10
6
10
7
10
8
10
9
10