Run: 2026-02-16-01KHK96T2F9AET993PMW2G476M

Run Details

Duration:
28.3s
Cost:
$0.001110
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
Fog licked the harbor as lanterns trembled, and the town woke to rumors thicker than the morning mist and shadows. At the docks, Mae Carver unrolled a map, counting footprints, listening for breaths that never reached the surface that night. The pier's edge glowed with slick rain, and a violin case lay open, revealing silence instead of strings, waiting nearby. From the alley, a streetlamp flickered, casting a halo around a chalk outline and a single wilted rose on cement. Mae knew every case began with noise and hesitation, not confession, and this one hummed with unanswered questions from everywhere. A distant bell tolled twice, as gulls wheeled above, and the town pressed closer, hungry for certainty and spectacle tonight. A rumor claimed the victim wore someone else's name, a confession hidden beneath linen collars and smiling photographs at home. Mae folded the map, sealed the case in her mind, and stepped into dawn's cold breath to begin the work.
created_at"2026-02-16T13:11:31.585201+00:00" 2/16/2026, 1:11:31 PM
model"openai/gpt-5-nano-2025-08-07"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4260
moderation_latency(null)
generation_time28104
tokens_prompt46
tokens_completion1068
native_tokens_prompt41
native_tokens_completion2770
native_tokens_completion_images0
native_tokens_reasoning2560
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"
usage0.00111005
router(null)
provider_responses
0
id"resp_05101e0ccfa512f401699317668ed08195baad91ccc8856d02"
status200
is_byokfalse
latency155
endpoint_id"50329d77-04e1-4979-a184-c33030289476"
provider_name"OpenAI"
model_permaslug"openai/gpt-5-nano-2025-08-07"
api_type"completions"
id"gen-1771247462-xD38G5TpMTsEVBw6xAOq"
upstream_id"resp_05101e0ccfa512f401699317668ed08195baad91ccc8856d02"
total_cost0.00111005
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