Run: 2026-02-16-01KHKA5NW874VGNJH3VGSEW48N

Run Details

Duration:
32.7s
Cost:
$0.025501
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 the harbor in silver threads as Detective Mira Lorne arrived, late, her notebook damp and resolve undimmed tonight. Behind the fishmonger stalls, a siren moaned, gulls scattering as uniformed boots converged on Slip Nine, already cordoned with tape. The body lay half-hidden beneath burlap, a pale hand pointing seaward, wedding band gleaming like a stranded lighthouse at midnight. Mira crouched, listening to rain tick the pier's ribs, while whispers eddied from shadows where dockworkers smoked, watching her silently. Officer Patel cleared his throat, voice low, saying the caller was anonymous, the message garbled, the location unmistakably precise tonight. She traced bruises already blooming beneath the wrist, noting rope impressions, tar smudges, and faint glitter like ground glass everywhere. From the darkness, a clock tolled two, and the harbor answered with clanks, chains gossiping against hulls, secrets unsettled beneath. A receipt in the coat pocket named Rook's Bar, timestamped earlier, scrawled with a meeting time and one initial only. Patel mentioned fishermen heard arguing between storms, a woman's laugh turning sharp, then silence, then something heavy meeting wood hard. Mira pocketed the receipt, lifted her eyes, and saw footprints dissolving, leading nowhere, except straight toward the black, patient water.
created_at"2026-02-16T13:28:27.250317+00:00" 2/16/2026, 1:28:27 PM
model"openai/gpt-5-2025-08-07"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4094
moderation_latency(null)
generation_time32639
tokens_prompt46
tokens_completion941
native_tokens_prompt41
native_tokens_completion2545
native_tokens_completion_images0
native_tokens_reasoning2240
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"
usage0.02550125
router(null)
provider_responses
0
id"resp_03e43e1f13bb87860169931b5a102081978bb0baa980743929"
status200
is_byokfalse
latency159
endpoint_id"7c2f859a-7890-4e8e-b1de-1cd1c0a800b4"
provider_name"OpenAI"
model_permaslug"openai/gpt-5-2025-08-07"
api_type"completions"
id"gen-1771248474-ETN8BdafS2WENv90wK4t"
upstream_id"resp_03e43e1f13bb87860169931b5a102081978bb0baa980743929"
total_cost0.02550125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
96.0653% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
020
120
221
320
420
520
620
720
820
920