Run: 2026-02-16-01KHKAFX7DW6AXNXDYQPMZX568

Run Details

Duration:
27.8s
Cost:
$0.006212
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
Fog hugged the crooked alley where lanterns sputtered and neighbors gathered, whispering about blood darkening the cobblestones before midnight's bell. Detective Marlowe arrived, coat collar turned up, mud on his boots, eyes already cataloging secrets the town preferred to hide. A woman's hand lay pale and elegant beneath a shawl, ringed fingers unclenched, palm stained with someone else's perfume tonight. Neighbors argued quietly about alibis and resentments, pointing at the butcher's son with trembling fingers and furious eyes that evening. Flowers left at the doorstep wilted under rain, petals blackened like old secrets, names whispered into the damp air slowly. Marlowe crouched, studying a thin footprint in the mud, cigarette ash falling like an accusation into the earth with intent. He noticed an embroidery thread snagged on the sleeve nearby, blue silk glinting, a clue obvious and infuriatingly private again. Somebody in the crowd watched Marlowe too closely, jaw clenched, eyes flicking like sparrows toward an unspoken confession and waiting. Rain tapered to a hush, and the town held its breath while a bell tolled once, twice, demanding answers loudly.
created_at"2026-02-16T13:33:57.370286+00:00" 2/16/2026, 1:33:57 PM
model"openai/gpt-5-mini-2025-08-07"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2450
moderation_latency(null)
generation_time27418
tokens_prompt46
tokens_completion1111
native_tokens_prompt41
native_tokens_completion3101
native_tokens_completion_images0
native_tokens_reasoning2816
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"
usage0.00621225
router(null)
provider_responses
0
id"resp_0954e617c97b537d0169931ca9483c8197841e9a83b92f389b"
status200
is_byokfalse
latency117
endpoint_id"c4f66d01-20b0-4c27-a225-438ea22fda43"
provider_name"OpenAI"
model_permaslug"openai/gpt-5-mini-2025-08-07"
api_type"completions"
id"gen-1771248809-4gP23FxUQ6vwKDaisSPF"
upstream_id"resp_0954e617c97b537d0169931ca9483c8197841e9a83b92f389b"
total_cost0.00621225
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences9
wordCounts
020
120
220
320
420
520
620
720
820