Run: 2026-02-16-01KHKB2PF19SJ5BGJSQFHAVXGX

Run Details

Duration:
27.1s
Cost:
$0.015451
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 hammered the boarded windows of Blackthorn House all night. By dawn, the village lane outside lay eerily hushed today. Inspector Mara Kline watched mist curl above the drenched hedges. Her boots sank slightly into mud, swallowing yesterday's delicate bootprints. Those prints belonged to Everett Vale, retired judge and philanthropist. Now Everett lay indoors, motionless, awaiting the coroner's reluctant attention. The front door gaped open, splintered around the heavy lock. No glass broken, no valuables missing, nothing obviously taken whatsoever. Mara ducked inside, tasting copper and lemon from overturned polish. Sunlight pierced dusty air, revealing specks like diligent, silent witnesses. Everett reclined in leather chair, posture absurdly peaceful, horribly final. Crimson stained his collar, seeping downward like ivy across brickwork. Beside him rested untouched tea, still steaming despite the chill. On the mantelpiece, clocks ticked uniformly, insisting nothing was wrong. Mara noticed the painting above Everett, hanging almost imperceptibly crooked. Behind its frame, faint drafts whispered secrets along the wallpaper. From the kitchen came sobs, jagged breaths shredding the silence. Housekeeper Nell Pryce waited there, clutching a towel like bandages. Her gaze fixed on Mara's coat, rainwater slowly dripping crimson.
created_at"2026-02-16T13:44:13.032021+00:00" 2/16/2026, 1:44:13 PM
model"openai/gpt-5.1-20251113"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency24979
moderation_latency(null)
generation_time27025
tokens_prompt46
tokens_completion360
native_tokens_prompt41
native_tokens_completion1540
native_tokens_completion_images0
native_tokens_reasoning1245
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"
usage0.01545125
router(null)
provider_responses
0
id"resp_00161d8780772b8e0169931f10f3508195bf5d21cfad237f6e"
status200
is_byokfalse
latency145
endpoint_id"764eb97f-8bab-4326-b29b-7a8799b00a70"
provider_name"OpenAI"
model_permaslug"openai/gpt-5.1-20251113"
api_type"completions"
id"gen-1771249424-oIApgoCLln669iipMypA"
upstream_id"resp_00161d8780772b8e0169931f10f3508195bf5d21cfad237f6e"
total_cost0.01545125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences19
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210
1310
1410
1510
1610
1710
1810