Run: 2026-02-16-01KHKAVY0EYKP33S6WM570MBC4

Run Details

Duration:
58.3s
Cost:
$0.002354
Provider:
OpenAI

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The harbor fog clung to the quay as night whispered secrets through half closed lanterns and unseen footsteps beyond gates. A knock shattered stillness, followed by siren lights sighing over timbered warehouses and a body wrapped in rain soaked velvet. Inspector Mirren arrived, cigarette curling blue smoke, noting footprints converging toward a cracked hatch and a glove forgotten ashore nearby. The promenade residents whispered about a vanished alibi, while gulls cried out like witnesses and waves rearranged the docks' secrets. From the victim's pocket, a card slid free, stamped with an address that burned with possible betrayals and merciless debts. A wind tossed envelope fluttered from stairwell, whispering a warning and wresting questions from the shadows that watched around here. He tasted salt on his lips, thought of coerced confessions, and promised to sift every lie from a quiet town. At dawn, the tide would erase footprints, but not the questions haunting those who slept beneath the city’s breath tonight.
created_at"2026-02-16T13:41:02.17874+00:00" 2/16/2026, 1:41:02 PM
model"openai/gpt-5-nano-2025-08-07"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1924
moderation_latency(null)
generation_time58044
tokens_prompt46
tokens_completion1410
native_tokens_prompt41
native_tokens_completion5879
native_tokens_completion_images0
native_tokens_reasoning5632
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"
usage0.00235365
router(null)
provider_responses
0
id"resp_09d27052b9ff56e00169931e335fc88195a5b4cb4298da3404"
status200
is_byokfalse
latency142
endpoint_id"50329d77-04e1-4979-a184-c33030289476"
provider_name"OpenAI"
model_permaslug"openai/gpt-5-nano-2025-08-07"
api_type"completions"
id"gen-1771249203-FyB97NKZneVh9VYq3syH"
upstream_id"resp_09d27052b9ff56e00169931e335fc88195a5b4cb4298da3404"
total_cost0.00235365
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
020
120
220
320
420
520
620
720