Run: 2026-02-16-01KHKB2FB8XBHXQBP8QETJB5WF

Run Details

Duration:
32.9s
Cost:
$0.001371
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
Mist clung to the harbor town as dawn pale, the clock tower tolling like a secret about to spill tonight. Inside the gaslit lobby, whispers gathered, guests shifting like shadows, awaiting someone who would never arrive to break the silence. A body lay slumped beneath the grand staircase, chalk white, eyes open, a lipstick kiss faint upon a cold cheek. The host, impeccably dressed, hovered near a velvet railing, pretending calm while fingertips trembled, counting breaths like ticking hidden clocks. A maid whispered that the victim had argued with someone unseen, words sharp as cut glass, just before midnight there. Outside, rain began tapping the panes, as if the weather itself urged suspects to conceal, confess, or simply vanish tonight. In the corner, a portrait winked with damp dust, inviting readers to follow secrets that never stay buried forever below.
created_at"2026-02-16T13:44:11.198165+00:00" 2/16/2026, 1:44:11 PM
model"openai/gpt-5-nano-2025-08-07"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2359
moderation_latency(null)
generation_time32586
tokens_prompt46
tokens_completion968
native_tokens_prompt41
native_tokens_completion3423
native_tokens_completion_images0
native_tokens_reasoning3200
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"
usage0.00137125
router(null)
provider_responses
0
id"resp_05da489324004ebf0169931f09aa80819785309f627d9fea13"
status200
is_byokfalse
latency160
endpoint_id"50329d77-04e1-4979-a184-c33030289476"
provider_name"OpenAI"
model_permaslug"openai/gpt-5-nano-2025-08-07"
api_type"completions"
id"gen-1771249417-1qann6DketCQccknjZSf"
upstream_id"resp_05da489324004ebf0169931f09aa80819785309f627d9fea13"
total_cost0.00137125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences7
wordCounts
020
120
220
320
420
520
620