Run: 2026-02-16-01KHKB0YHZJC2YSFJBR2G3R963

Run Details

Duration:
22.8s
Cost:
$0.015211
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 boarded windows as Detective Mara Quinn stepped into Ashcroft Manor, boots leaving nervous echoes behind her tonight. The electricity had failed hours earlier, leaving the vast house reliant on candles that guttered like frightened, watchful eyes everywhere. In the drawing room, ten guests clustered around a cold fireplace, their whispered accusations soft as ash on porcelain mantelshelf. On the Persian carpet between them lay Victor Harrow, party host, his tuxedo immaculate, his throat impossibly, surgically opened wide. Blood had stopped flowing long before Mara arrived, congealed into dark petals that framed his head like corrupted laurels tonight. Beside the body, someone had arranged three white chess pawns in a triangle, their bases touching, their meanings opaque deliberately. Mara noted muddy footprints near the French doors, each print sharply defined, then abruptly vanishing before reaching the bloodless corpse. Lightning flashed, illuminating every anxious face, and for an instant all eyes reflected the same guilty, hunted expression back inward. Outside, thunder rolled across the cliffs and swallowed the sound of distant sirens inching toward the manor through flooded roads. Until they arrived, Mara knew, everyone remained both witness and suspect, trapped together with the dead man and his secret.
created_at"2026-02-16T13:43:11.147736+00:00" 2/16/2026, 1:43:11 PM
model"openai/gpt-5.1-20251113"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3713
moderation_latency(null)
generation_time22605
tokens_prompt46
tokens_completion1012
native_tokens_prompt41
native_tokens_completion1516
native_tokens_completion_images0
native_tokens_reasoning1250
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"
usage0.01521125
router(null)
provider_responses
0
id"resp_0fb353f8eee35d740169931ed7af888190879a68f91df04a01"
status200
is_byokfalse
latency167
endpoint_id"764eb97f-8bab-4326-b29b-7a8799b00a70"
provider_name"OpenAI"
model_permaslug"openai/gpt-5.1-20251113"
api_type"completions"
id"gen-1771249367-xodvP5sWKTFH7vhAJDCF"
upstream_id"resp_0fb353f8eee35d740169931ed7af888190879a68f91df04a01"
total_cost0.01521125
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