Run: 2026-02-16-01KHK9SEY24R6C9GV4ZQNMNQ6E

Run Details

Duration:
18.9s
Cost:
$0.013671
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 old manor, drowning whispers beneath relentless thunder. Detective Mara Quinn arrived late, headlights slicing through swirling mist. Inside, guests clustered nervously, clutching glasses, studying unfamiliar frightened faces. The host, Victor Langford, lay missing, his chair conspicuously empty. On polished floorboards, muddy footprints meandered like careless punctuation there. Lightning flashed, revealing portraits whose painted eyes followed every movement. From the library, a scream burst, high, ragged, abruptly silenced. Mara ran toward it, hand brushing the holstered service pistol. Books lay scattered like fallen soldiers, pages fluttering in breeze. Atop the Persian rug, Victor sprawled, throat opened with precision. Blood threaded through carpet patterns, transforming flowers into red galaxies. A single playing card rested beside him, edges perfectly clean. The queen of hearts stared upward, unblinking, like mocking witness. Windows were latched, fireplace cold, every exit seeming thoroughly watched. Mara noted trembling hands, averted eyes, secrets crowding the air. Somewhere within that room, behind courteous smiles, the murderer listened.
created_at"2026-02-16T13:21:33.167482+00:00" 2/16/2026, 1:21:33 PM
model"openai/gpt-5.1-20251113"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4763
moderation_latency(null)
generation_time18605
tokens_prompt46
tokens_completion830
native_tokens_prompt41
native_tokens_completion1362
native_tokens_completion_images0
native_tokens_reasoning1114
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"
usage0.01367125
router(null)
provider_responses
0
id"resp_0b7577fee9e1e77401699319c9d6148197b5278dcdc6204d51"
status200
is_byokfalse
latency168
endpoint_id"764eb97f-8bab-4326-b29b-7a8799b00a70"
provider_name"OpenAI"
model_permaslug"openai/gpt-5.1-20251113"
api_type"completions"
id"gen-1771248073-uYYoQSuH7VBmrzBtDXfz"
upstream_id"resp_0b7577fee9e1e77401699319c9d6148197b5278dcdc6204d51"
total_cost0.01367125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences16
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210
1310
1410
1510