Run: 2026-02-16-01KHKA76T1PKRDV7SSGZVJ5VJW

Run Details

Duration:
17.8s
Cost:
$0.015094
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 pressed against Briarwood Manor as Detective Lena Hart arrived, summoned by a midnight call from the caretaker outside town. Inside, chandeliers flickered above silent portraits, and the guests whispered like conspirators while rain stitched the windows shut all night. A violin case lay open on the marble, yet the instrument was missing, leaving only rosined dust near fresh footprints. Lena followed the butler downstairs, where a locked study door stood ajar, breathing tobacco and bitter ink into cold hallway. On the carpet, Lord Ashcroft sprawled beside his desk, throat pierced neatly, his watch stopped at twelve thirteen exactly sharp. No window was broken, no safe was opened, but a single playing card rested between his pale fingers facedown smirking. Upstairs, each guest insisted innocence, yet their stories overlapped oddly, and someone smelled of lavender and gunpowder after the storm. Lena pocketed the card, listening to the manor's ticking pipes, and wondered who feared tomorrow's inheritance most among them all.
created_at"2026-02-16T13:29:02.378526+00:00" 2/16/2026, 1:29:02 PM
model"openai/gpt-5.2-20251211"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency16013
moderation_latency(null)
generation_time17634
tokens_prompt46
tokens_completion269
native_tokens_prompt41
native_tokens_completion1073
native_tokens_completion_images0
native_tokens_reasoning853
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"
usage0.01509375
router(null)
provider_responses
0
id"resp_01cc0bac7b2c24830169931b8c2cd88194add720aaf4fb17b5"
status200
is_byokfalse
latency158
endpoint_id"f00142c2-6a93-49ce-9e36-5593b904ce3b"
provider_name"OpenAI"
model_permaslug"openai/gpt-5.2-20251211"
api_type"completions"
id"gen-1771248524-k9xlbC8Gy5UQs28Npywu"
upstream_id"resp_01cc0bac7b2c24830169931b8c2cd88194add720aaf4fb17b5"
total_cost0.01509375
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