Run: 2026-02-16-01KHK9VHNKQAP20WVR2H5QB86X

Run Details

Duration:
50.7s
Cost:
$0.032341
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 cliffside village as the lighthouse beam jittered, slicing darkness while sirens approached the harbor road at midnight. Mara Ellison found the body behind the cannery, sprawled among nets, one shoe missing, eyes glassy beneath the flickering lamp. A playing card rested on his tongue, the queen of spades, blackened edges damp, daring anyone to understand the message. Detective Rowan Hale ducked under the tape, boots squeaking, eyes scanning fishermen huddled nearby, whispers looping like gulls overhead restlessly. "Lock the pier," he said, kneeling beside Mara, "and keep them talking; murder hates silence more than witnesses at night." Tidewater pawed at footprints leading nowhere, while the cannery clock chimed twelve twice, as if correcting time for a lie. Someone whispered the name Conrad Pike, salt baron, benefactor, bastard; the words snagged like hooks inside the fog and throats. Rowan smelled anise, unusual among tar and brine, recalling prison dice games, queen high determining debts paid in blood long-owed. Mara steadied herself, then pointed to his thumbnails, scraped raw, crescents packed with blue paint flecked like tidepool porcelain chips. The lighthouse blinked twice, surrendering darkness, and everyone looked smaller, as if the killer had already chosen another witness tonight.
created_at"2026-02-16T13:23:13.137932+00:00" 2/16/2026, 1:23:13 PM
model"openai/gpt-5-2025-08-07"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency6224
moderation_latency(null)
generation_time50500
tokens_prompt46
tokens_completion1100
native_tokens_prompt41
native_tokens_completion3229
native_tokens_completion_images0
native_tokens_reasoning2880
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"
usage0.03234125
router(null)
provider_responses
0
id"resp_0092da01df0065100169931a0e13cc8190b3c3335fb93227e2"
status200
is_byokfalse
latency154
endpoint_id"7c2f859a-7890-4e8e-b1de-1cd1c0a800b4"
provider_name"OpenAI"
model_permaslug"openai/gpt-5-2025-08-07"
api_type"completions"
id"gen-1771248142-Cy6M167ozn6yzzJRcX3r"
upstream_id"resp_0092da01df0065100169931a0e13cc8190b3c3335fb93227e2"
total_cost0.03234125
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
220
320
420
520
620
721
820
920