Run: 2026-02-16-01KHKB0WGKN8XQ7YWEM18Y0Q8V

Run Details

Model:
GPT-5 Nano
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
25.2s
Cost:
$0.000987
Provider:
OpenAI

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Fog hung over the pier. Moonlight sliced through drifting mist. A body rested in shadows. The lantern hummed above boards. A detective surveyed the scene. Rain tapped the harbor stones. Bootprints trailed toward the water. A siren wailed in distance. Footsteps receded as dusk settled. This night kept its secret.
created_at"2026-02-16T13:43:11.180144+00:00" 2/16/2026, 1:43:11 PM
model"openai/gpt-5-nano-2025-08-07"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency5104
moderation_latency(null)
generation_time25044
tokens_prompt46
tokens_completion799
native_tokens_prompt41
native_tokens_completion2462
native_tokens_completion_images0
native_tokens_reasoning2368
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.00098685
router(null)
provider_responses
0
id"resp_0f80210e509f01820169931ed598d48196b6d9b1ea91a8979d"
status200
is_byokfalse
latency128
endpoint_id"50329d77-04e1-4979-a184-c33030289476"
provider_name"OpenAI"
model_permaslug"openai/gpt-5-nano-2025-08-07"
api_type"completions"
id"gen-1771249365-EJ9txMp0aXcoUNmsYPs0"
upstream_id"resp_0f80210e509f01820169931ed598d48196b6d9b1ea91a8979d"
total_cost0.00098685
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
05
15
25
35
45
55
65
75
85
95