Run: 2026-02-16-01KHK9YA0V635ZWJDG8SN62PRZ

Run Details

Duration:
15.9s
Cost:
$0.014100
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 sheeted over Hawthorn Manor as Inspector Lyle arrived, summoned by a frantic telegram before dawn today from London headquarters. The iron gates stood ajar, and the gravel drive showed only one set of fresh tire tracks inward so far. Inside, servants whispered in tight circles, avoiding the library where Lord Merrin lay facedown beside shattered glass and ink spilled. A fire burned low, yet the room smelled of sea salt, as if a door had opened recently outside again. Lyle noted the clock stopped at 2:17, while a violin string curled around the victim's ringed finger like black hair. On the desk, a half-written letter accused someone called Sparrow, but the signature was carefully sliced away with surgical precision. When Lyle lifted the decanter, he found it warm, though the wine inside looked undisturbed and darkly clear to him. From the hallway, a single note rang, then ceased, and Lyle realized the murderer might still be listening nearby tonight.
created_at"2026-02-16T13:24:08.959953+00:00" 2/16/2026, 1:24:08 PM
model"openai/gpt-5.2-20251211"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4940
moderation_latency(null)
generation_time15687
tokens_prompt46
tokens_completion622
native_tokens_prompt41
native_tokens_completion1002
native_tokens_completion_images0
native_tokens_reasoning788
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"
usage0.01409975
router(null)
provider_responses
0
id"resp_07c6ca3a739f71710169931a688ee8819489c07ac6346e44ad"
status200
is_byokfalse
latency346
endpoint_id"f00142c2-6a93-49ce-9e36-5593b904ce3b"
provider_name"OpenAI"
model_permaslug"openai/gpt-5.2-20251211"
api_type"completions"
id"gen-1771248232-mWhchLNeUNkbKf5IphUf"
upstream_id"resp_07c6ca3a739f71710169931a688ee8819489c07ac6346e44ad"
total_cost0.01409975
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
95.0816% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
020
120
220
320
420
521
620
720