Run: 2026-02-16-01KHK9B4VH24EYV1MR734JFSCB

Run Details

Duration:
16.7s
Cost:
$0.014380
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 pressed against Hawthorne Manor as Inspector Lyle arrived, summoned by a frantic telegram before midnight struck again today, quietly. The iron gate groaned behind him, and the grounds smelled of wet roses and something metallic, uncomfortably close to him. Inside, candles wavered in the corridor, casting long shadows that refused to match the portraits lining walls at all tonight. A maid led him upstairs, whispering that Lord Pembroke had been found in the library, locked from within somehow dead. Lyle noted the silence, broken only by ticking clocks, while guests gathered below, rehearsing grief with practiced eyes for him. The library door stood sealed by brass bolts, yet the key lay on a tray beside untouched brandy and cigars. When the butler finally opened it, cold air spilled out, carrying perfume, ash, and the faintest seawater from somewhere nearby. On the rug, Pembroke lay facedown, a letter clutched in his hand, addressed to Inspector Lyle alone in black ink.
created_at"2026-02-16T13:13:41.934319+00:00" 2/16/2026, 1:13:41 PM
model"openai/gpt-5.2-20251211"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency5253
moderation_latency(null)
generation_time16399
tokens_prompt46
tokens_completion761
native_tokens_prompt41
native_tokens_completion1022
native_tokens_completion_images0
native_tokens_reasoning801
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"
usage0.01437975
router(null)
provider_responses
0
id"resp_0012f13876ab479801699317f4add08197bde397aa2f0077ac"
status200
is_byokfalse
latency154
endpoint_id"f00142c2-6a93-49ce-9e36-5593b904ce3b"
provider_name"OpenAI"
model_permaslug"openai/gpt-5.2-20251211"
api_type"completions"
id"gen-1771247604-phEgPUccQ9nqYQXy28qh"
upstream_id"resp_0012f13876ab479801699317f4add08197bde397aa2f0077ac"
total_cost0.01437975
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
020
120
220
320
420
520
620
720