Run: 2026-02-16-01KHKAA6G3K1BTCR6248ZR6ZCQ

Run Details

Duration:
35.7s
Cost:
$0.001186
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 cobblestones as midnight bells tolled, signaling secrets hiding behind respectable doors and polished smiles within the manor. Inspectress Mara Lane arrived, rainwater pelting her coat, already noting footprints leading toward the library and a silent, accusing clock. In the library, a body lay sprawled beneath towering portraits, a dagger glinting, and whispers fluttered like disturbed moths everywhere. A telegram lay unopened on the desk, postmarked in a city that never slept, hinting at debts, vows, and betrayal. Mara kneeled, inspecting the wound on the victim's throat while a clock chimed, counting seconds that refused to lie tonight. From the rainwashed window, a cat stared, tail flicking, as if guarding someone else's secrets while the storm intensified outside. The manor breathed with chandeliers, muffled footsteps, and unanswered questions, as Mara vowed to unravel the night’s carefully staged alibi.
created_at"2026-02-16T13:30:58.124396+00:00" 2/16/2026, 1:30:58 PM
model"openai/gpt-5-nano-2025-08-07"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3224
moderation_latency(null)
generation_time35194
tokens_prompt46
tokens_completion992
native_tokens_prompt41
native_tokens_completion2960
native_tokens_completion_images0
native_tokens_reasoning2752
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"
usage0.00118605
router(null)
provider_responses
0
id"resp_08135bd9ab67e2360169931bee287c8195a205f1721a0d26e9"
status200
is_byokfalse
latency116
endpoint_id"50329d77-04e1-4979-a184-c33030289476"
provider_name"OpenAI"
model_permaslug"openai/gpt-5-nano-2025-08-07"
api_type"completions"
id"gen-1771248622-SxCerEAgdE2FIm6pnkhM"
upstream_id"resp_08135bd9ab67e2360169931bee287c8195a205f1721a0d26e9"
total_cost0.00118605
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences7
wordCounts
020
120
220
320
420
520
620