Run: 2026-03-09-01KKAC5YHBT2AS000YCA2PV7BA

Run Details

Duration:
10.6s
Cost:
$0.011728
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
100.00% Matches word count (details)

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 threaded silver needles through Blackthorn Manor's courtyard as Inspector Vale arrived, summoned before dawn by a trembling, half-coherent housemaid. The front door stood open, breathing candlelight onto the steps, while somewhere inside, a grandfather clock struck six reluctant chimes. In the library, Lord Pembroke reclined beneath shattered glass, his velvet smoking jacket darkened by blood and spilled burgundy everywhere. Only the portrait above him seemed unsurprised, its painted eyes fixed upon the fireplace where embers smoldered around charred paper. Vale removed his gloves slowly, noticing three teacups, one muddy footprint, and the widow's pearls scattered beneath the desk nearby. By sunrise, he knew the killer remained inside the manor, listening already for the first question nobody wished answered aloud.
created_at"2026-03-09T22:41:13.781Z" 3/9/2026, 10:41:13 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency9629
moderation_latency(null)
generation_time10482
tokens_prompt46
tokens_completion379
native_tokens_prompt41
native_tokens_completion775
native_tokens_completion_images0
native_tokens_reasoning605
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"
usage0.0117275
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_0ead3345ae31b2dc0169af4c89e27c819095314706bef121df"
is_byokfalse
latency235
model_permaslug"openai/gpt-5.4-20260305"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer(null)
api_type"completions"
id"gen-1773096073-j5zFTRiqiZ2HKQXAQCvb"
upstream_id"resp_0ead3345ae31b2dc0169af4c89e27c819095314706bef121df"
total_cost0.0117275
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
020
120
220
320
420
520