Run: 2026-02-16-01KHK9FWJC3YC0HBNGXVNF7ZP3

Run Details

Duration:
17.8s
Cost:
$0.012221
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 station roof, disguising footsteps and whispered arguments. Detective Mara Kline watched commuters scatter, clutching umbrellas like shields. The last train had already left, but nobody seemed departing. Instead, a nervous crowd pressed inward, orbiting the shuttered restroom. A guard waved urgently, spotting Mara's familiar plain gray overcoat. She pushed through murmuring bodies, perfume and wet wool mingling. The restroom door gaped open, chained awkwardly to cleaning equipment. Inside, fluorescent light flickered, painting everything jaundiced and disturbingly uncertain. The corpse sat upright on the toilet, suit meticulously pressed. Only his eyes were wrong, focused upward, astonished, still calculating. Water dripped steadily from the ceiling, ticking seconds between heartbeats. Mara noted the silence first, heavier than any gathered suspicion. No one screamed now; the fear had turned inward, watchful. Somebody here knew him, Mara thought, and wasn't surprised enough. Outside, the rain intensified, trapping every witness inside with murder.
created_at"2026-02-16T13:16:18.359777+00:00" 2/16/2026, 1:16:18 PM
model"openai/gpt-5.1-20251113"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency5058
moderation_latency(null)
generation_time17529
tokens_prompt46
tokens_completion868
native_tokens_prompt41
native_tokens_completion1217
native_tokens_completion_images0
native_tokens_reasoning988
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"
usage0.01222125
router(null)
provider_responses
0
id"resp_09faeed97d2a23990169931890093881978be717803b6d365c"
status200
is_byokfalse
latency169
endpoint_id"764eb97f-8bab-4326-b29b-7a8799b00a70"
provider_name"OpenAI"
model_permaslug"openai/gpt-5.1-20251113"
api_type"completions"
id"gen-1771247759-6DQYEsYzUvP0xRWtWrTH"
upstream_id"resp_09faeed97d2a23990169931890093881978be717803b6d365c"
total_cost0.01222125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences15
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210
1310
1410