Run: 2026-02-16-01KHK9Y3RVT62M9MR2DZTQFRDC

Run Details

Duration:
27.6s
Cost:
$0.019091
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
Rain smeared the city lights into trembling ribbons as Detective Maris Crowe reached the cordoned alley, coat dripping with rainwater. Uniformed officers clustered near the dumpster, trading hushed theories, but conversation thinned when they noticed Maris approaching through the downpour. The alley smelled of rot and metal, a sour cocktail swirling beneath siren wails and the distant grind of traffic. Beneath the yellow tarp lay the body, outlined by fallen trash and glass, like the alley itself rejected him tonight. Maris crouched beside the tarp, water seeping into her boots, and lifted the edge, bracing for another ordinary nightmare unfolding. The victim's face stared upward, eyes filmed with rain, expression peaceful except for the dark crescent carved across his throat. Silver glinted against his palm, a small chess knight clenched so tightly the edges had punctured skin despite the rigor. Maris exchanged a glance with Sergeant Hale, whose jaw flexed once, betraying recognition before his features settled into professional blankness. We had a message last week, anonymous, about a game beginning, Hale muttered, and nobody listened because nothing happened then. Raindrops gathered in the dead man's hollowed ear, ticking like seconds, while somewhere unseen the first move waited, smiling patiently.
created_at"2026-02-16T13:24:14.052377+00:00" 2/16/2026, 1:24:14 PM
model"openai/gpt-5.1-20251113"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4244
moderation_latency(null)
generation_time27353
tokens_prompt46
tokens_completion1066
native_tokens_prompt41
native_tokens_completion1904
native_tokens_completion_images0
native_tokens_reasoning1627
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"
usage0.01909125
router(null)
provider_responses
0
id"resp_062d58afe587fa910169931a6228ec8194aa3b67c2e23f946a"
status200
is_byokfalse
latency193
endpoint_id"764eb97f-8bab-4326-b29b-7a8799b00a70"
provider_name"OpenAI"
model_permaslug"openai/gpt-5.1-20251113"
api_type"completions"
id"gen-1771248226-5JTI6FBs7p6BdmlGhOpg"
upstream_id"resp_062d58afe587fa910169931a6228ec8194aa3b67c2e23f946a"
total_cost0.01909125
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
020
120
220
320
420
520
620
720
820
920