Run: 2026-02-16-01KHK9GD8Z7Z2DZ91BTR4TFPX3

Run Details

Duration:
40.5s
Cost:
$0.001549
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 rain painted the town's narrow streets with glassy echoes as evening settled over the deserted harbor upon the quay. A lone lamplight flickered near the bakery, casting hesitant shadows across puddles while distant thunder memorized every crime that night. At the harbor warehouse, a crate lay open, its splintered lid revealing a pallid hand faintly gloved beneath a hush. The victim wore a burgundy scarf, knotted loosely, as if last evening's kiss still clung to a memory for someone. I arrived with damp shoes and a notebook, knowing every answered question births another riddle around here tonight somewhere listening. The town clock sighed, twelve strokes mourning someone, while witnesses whispered names that did not fit the map that night. A cigarette butt curled near the crate smelled of rain and factory ash, secretly guarding a cipher’s first breath tonight. The harbor whispered of secrets, and every gull's cry sounded like a question no one wished answered on that night.
created_at"2026-02-16T13:16:57.898036+00:00" 2/16/2026, 1:16:57 PM
model"openai/gpt-5-nano-2025-08-07"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2256
moderation_latency(null)
generation_time39892
tokens_prompt46
tokens_completion1291
native_tokens_prompt41
native_tokens_completion3867
native_tokens_completion_images0
native_tokens_reasoning3648
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"
usage0.00154885
router(null)
provider_responses
0
id"resp_01cdb25afde6e67001699318a1234081959c444f4b7cac6e69"
status200
is_byokfalse
latency109
endpoint_id"50329d77-04e1-4979-a184-c33030289476"
provider_name"OpenAI"
model_permaslug"openai/gpt-5-nano-2025-08-07"
api_type"completions"
id"gen-1771247777-6DJEVYo8ArZEetjJchlU"
upstream_id"resp_01cdb25afde6e67001699318a1234081959c444f4b7cac6e69"
total_cost0.00154885
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