Run: 2026-02-16-01KHK9WDR1E6SGHD8SHCJD7ZDW

Run Details

Duration:
19.6s
Cost:
$0.010901
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 hammered the abandoned seaside hotel as Detective Mara Quinn stepped from her car, clutching yesterday's unsolved case file tightly. Inside, power flickered above peeling wallpaper, revealing dust-choked chandeliers and a reception bell stained with something disturbingly dark, dried there. She followed the echo of raised voices to the ballroom, where wealthy investors awaited police clearance to reclaim their property. At the room's center lay Victor Harrow, real estate magnate, tuxedo soaked crimson, one jeweled cufflink driven into his throat. Guests clustered near overturned chairs and a shattered champagne tower, clutching glittering masks from tonight's ill-fated charity masquerade gala nervously. Near the body, a single wet footprint gleamed on parquet flooring, pointing away from open terrace doors rattling in wind. Mara watched the nervous pianist wiping his hands, though blood spatter suggested the killer had remained directly beside Victor throughout. As thunder drowned distant sirens, she realized everyone possessed airtight alibis, except the anonymous caller who insisted on remaining unseen.
created_at"2026-02-16T13:23:11.62491+00:00" 2/16/2026, 1:23:11 PM
model"openai/gpt-5.1-20251113"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency17830
moderation_latency(null)
generation_time19514
tokens_prompt46
tokens_completion291
native_tokens_prompt41
native_tokens_completion1085
native_tokens_completion_images0
native_tokens_reasoning862
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"
usage0.01090125
router(null)
provider_responses
0
id"resp_026e6038cf5188500169931a2ad62481909a5d2b907af2384d"
status200
is_byokfalse
latency154
endpoint_id"764eb97f-8bab-4326-b29b-7a8799b00a70"
provider_name"OpenAI"
model_permaslug"openai/gpt-5.1-20251113"
api_type"completions"
id"gen-1771248170-KwtPBVK0pJH35e7HPK9E"
upstream_id"resp_026e6038cf5188500169931a2ad62481909a5d2b907af2384d"
total_cost0.01090125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
90.1633% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
020
121
220
320
421
520
620
720