Run: 2026-02-16-01KHKA8CSGSW4ZFRCSPRMPD55X

Run Details

Duration:
18.4s
Cost:
$0.012551
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 seaside hotel as Detective Mara Quinn studied the faded carpet, awaiting the evening's tedious charity banquet alone. The guests drifted through the lobby, sequins glittering, false laughter rising, masking tensions she'd learned to hear beneath every toast. Hotel manager Victor Hale approached nervously, twisting his cufflinks, whispering that a donor threatened cancellation over some missing artwork upstairs. Mara followed him toward the elevator, noting smeared fingerprints on brass buttons and a single crimson thread caught there earlier. On the sixth floor, the corridor smelled of chlorine and perfume, carpet muffling their footsteps toward the locked penthouse suite. Victor's keycard trembled in the slot, red light blinking twice before accepting, as thunder rolled like distant, disapproving applause outside. The suite's lights were off, curtains billowing from an open balcony door, letting in rain, salt, and something metallic unmistakable. Lightning flashed, revealing billionaire patron Charles Renner sprawled across the white piano, throat opened neatly, blood veining ivory keys below. Rain speckled his polished shoes, impossible from this angle, and Mara knew the balcony scene had been deliberately constructed earlier. Downstairs, the orchestra struck its first waltz, while upstairs Mara quietly locked the door, announcing everyone's evening had changed forever.
created_at"2026-02-16T13:29:41.683988+00:00" 2/16/2026, 1:29:41 PM
model"openai/gpt-5.1-20251113"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency16884
moderation_latency(null)
generation_time18227
tokens_prompt46
tokens_completion365
native_tokens_prompt41
native_tokens_completion1250
native_tokens_completion_images0
native_tokens_reasoning974
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"
usage0.01255125
router(null)
provider_responses
0
id"resp_03b819e3a6e1e69c0169931bb320ac8196874ea9cdacc0336a"
status200
is_byokfalse
latency225
endpoint_id"764eb97f-8bab-4326-b29b-7a8799b00a70"
provider_name"OpenAI"
model_permaslug"openai/gpt-5.1-20251113"
api_type"completions"
id"gen-1771248563-h6Wm39fSRc81S42qk6xn"
upstream_id"resp_03b819e3a6e1e69c0169931bb320ac8196874ea9cdacc0336a"
total_cost0.01255125
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