Run: 2026-02-16-01KHKAAAEDBFWN1QCVVHHBP6GV

Run Details

Duration:
15.5s
Cost:
$0.012322
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 stitched silver lines across Hawthorne Manor as Detective Mara Quinn climbed the porch steps, summoned at midnight without warning. Inside, candlelight trembled on wallpaper roses, and the butler held out a note signed with unfamiliar initials only to her. The guests waited in the music room, whispering behind gloves, while a phonograph clicked softly between songs for the moment. Upstairs, Lord Ashbury lay facedown near the library door, his pocket watch stopped at one thirteen exactly, and blood cooled. Mara noticed muddy prints leading toward the conservatory, yet every boot in the hall appeared freshly polished under harsh lamps. A gardener swore he heard laughter outside, but the storm swallowed details, leaving only shattered glass nearby in wet gravel. When Mara opened the note, a single sentence warned her that the killer would greet her first before dawn arrived.
created_at"2026-02-16T13:30:42.21525+00:00" 2/16/2026, 1:30:42 PM
model"openai/gpt-5.2-20251211"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4759
moderation_latency(null)
generation_time15255
tokens_prompt46
tokens_completion667
native_tokens_prompt41
native_tokens_completion875
native_tokens_completion_images0
native_tokens_reasoning692
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"
usage0.01232175
router(null)
provider_responses
0
id"resp_02739515e75541d20169931bf23498819382fd9dcf47a5b699"
status200
is_byokfalse
latency159
endpoint_id"f00142c2-6a93-49ce-9e36-5593b904ce3b"
provider_name"OpenAI"
model_permaslug"openai/gpt-5.2-20251211"
api_type"completions"
id"gen-1771248626-R4KzVniQbQXcFHyx34uL"
upstream_id"resp_02739515e75541d20169931bf23498819382fd9dcf47a5b699"
total_cost0.01232175
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