Run: 2026-02-16-01KHKAQPH7KHQDC2C70JTESE5Q

Run Details

Duration:
43.6s
Cost:
$0.028151
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 stitched silver lines across the harbor as the night ferry exhaled, delivering strangers and rumors to Graywharf that night. The lighthouse blinked a tired warning, while gulls circled like gossipers, hungry for misfortune and yesterday's forgotten confessions to feast. Detective Mara Vale stepped ashore, coat heavy with brine, eyes cataloging exits, faces, and the clockwork tidebooker's stall by customs. Graywharf Inn breathed warmth and smoke, yet its lobby fell silent when the bell clanged like a startled heart inside. Behind the desk, Mrs. Keene's smile misfired, landing crooked, as thunder rehearsed excuses no guest had requested for late arrivals. Room keys glittered like baited hooks, and someone had taken three, though only two rooms held registered breathing occupants tonight. In the parlor, a grandfather clock coughed twice, then choked forever, just as a scream severed conversation into ribbons downstairs. They found him among postcards and maps, the tidebooker, throat inked crimson, hands clenched around a stubborn brass compass tight. A puddle rat navigated the spreading red, fearless, while whispers tallied suspects like coins: captain, widow, drifter, minister and innkeeper. Mara knelt, counted secrets in silence, and noticed wet sand on windowsills, as the storm forgot to close doors behind.
created_at"2026-02-16T13:38:28.623385+00:00" 2/16/2026, 1:38:28 PM
model"openai/gpt-5-2025-08-07"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4849
moderation_latency(null)
generation_time43522
tokens_prompt46
tokens_completion805
native_tokens_prompt41
native_tokens_completion2810
native_tokens_completion_images0
native_tokens_reasoning2496
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"
usage0.02815125
router(null)
provider_responses
0
id"resp_03f565c0897c04900169931da894c4819483a223687e1cd97b"
status200
is_byokfalse
latency171
endpoint_id"7c2f859a-7890-4e8e-b1de-1cd1c0a800b4"
provider_name"OpenAI"
model_permaslug"openai/gpt-5-2025-08-07"
api_type"completions"
id"gen-1771249064-uNJv9f2eK2n9WTT5h9tZ"
upstream_id"resp_03f565c0897c04900169931da894c4819483a223687e1cd97b"
total_cost0.02815125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
020
120
220
320
420
520
620
720
820
920