Non-conformant date string in API response

[manikmakki]

Hello! While attempting to integrate https://github.com/tensorchord/modelz-llm with a project, I discovered that the two following references are not conformant with the OpenAI API spec and are causing errors when the external application attempts to parse the response from the API.

https://github.com/tensorchord/llmspec/blob/088cd31fab8eef9ecc2cd36c0922d21128413471/llmspec/llmspec.py#L124C1-L125C1
https://github.com/tensorchord/llmspec/blob/088cd31fab8eef9ecc2cd36c0922d21128413471/llmspec/llmspec.py#L156C14-L156C14

For reference, the OpenAI API Reference states that the "created" value is a Unix Timestamp in seconds when in reality is more commonly known as "epoch milliseconds".

[manikmakki]

Additionally, my mistake, the function I proposed converts milliseconds to seconds, per the OpenAI API Reference.