Run: 2026-03-18-01KM095AC7A8GBC1XM55220N78

Run Details

Duration:
1.1s
Cost:
$0.000521
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
88.89% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain slicked the station platform when Inspector Vale arrived alone. A whistle screamed; then the body slid from beneath the bench. Crowds recoiled, but nobody saw the gloved hand retreating nearby. Vale knelt, noting mud, blood, and a curious brass button. The dead man’s pocket watch still ticked, impossibly, in silence. Above them, the clocktower struck nine, then abruptly stopped. Someone in the crowd whispered, “That’s impossible,” and vanished.
created_at"2026-03-18T10:51:44.916Z" 3/18/2026, 10:51:44 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency391
moderation_latency(null)
generation_time962
tokens_prompt46
tokens_completion124
native_tokens_prompt41
native_tokens_completion109
native_tokens_completion_images0
native_tokens_reasoning0
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"
usage0.00052125
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_05e4311b63d1823d0169ba83c0fa0c819599e3496128dd8696"
is_byokfalse
latency197
model_permaslug"openai/gpt-5.4-mini-20260317"
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-1773831104-I4Gt4YzzC6U8393VyNOv"
upstream_id"resp_05e4311b63d1823d0169ba83c0fa0c819599e3496128dd8696"
total_cost0.00052125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
88.89% Matches word count n/a
neededCleanfalse
sentences7
wordCounts
010
111
210
310
410
59
69