Run: 2026-02-16-01KHK95SHC12X9WNE27MQTQJ62

Run Details

Duration:
30.6s
Cost:
$0.017781
Provider:
OpenAI

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain stitched silver lines across Harrowgate Station's cracked glass roof. Detective Mara Lyle arrived late, carrying yesterday's unsolved headlines folded. On platform three, the body lay arranged with unnatural precision. Commuters pressed backward, clutching umbrellas like shields against contagious misfortune. The stationmaster's whistle trembled, refusing duty, dangling from shaking fingers. Mara knelt beside the corpse, avoiding smeared chalk directional arrows. Someone had traced messages around him, letters looping through puddles. They glowed faintly beneath emergency lights, spelling nothing yet unsettling. The victim wore evening clothes unsuited for dawn's commuter train. A red carnation decorated his lapel, petals crisp despite weather. No blood marred the flower; everything else seemed meticulously ruined. Ticket inspector Holloway cleared his throat, words marching out reluctantly. "He arrived alone, Detective, bought return fare, never boarded anything." Mara studied Holloway's eyes, finding lies carefully tidied away somewhere. Somewhere behind announcements, a child laughed, bright and inappropriate here. The sound skittered across tracks, chased off by distant thunder. She checked the corpse's pockets, finding only sugar packets, receipts. Each receipt bore identical time stamps, different vendors, same signature. The signature matched the chalk letters curving sorrowfully around him. Behind Mara, platform speakers crackled, announcing a delay for investigations. Travelers groaned, yet nobody complained about sharing space with death. They only watched Mara, silently appointing her keeper of explanations. Rain thickened outside, turning station windows into mirrors of suspicion. Mara's reflection met the dead man's, neither offering helpful answers.
created_at"2026-02-16T13:11:00.249444+00:00" 2/16/2026, 1:11:00 PM
model"openai/gpt-5.1-20251113"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency6343
moderation_latency(null)
generation_time30033
tokens_prompt46
tokens_completion1251
native_tokens_prompt41
native_tokens_completion1773
native_tokens_completion_images0
native_tokens_reasoning1409
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"
usage0.01778125
router(null)
provider_responses
0
id"resp_06db7416180a2d75016993174594a88193b8390ddb4ad9dae0"
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-1771247429-Wzn43Zc4pXlYfdnGO9XZ"
upstream_id"resp_06db7416180a2d75016993174594a88193b8390ddb4ad9dae0"
total_cost0.01778125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences24
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210
1310
1410
1510
1610
1710
1810
1910
2010
2110
2210
2310