MaxTokens is now depracitated, use MaxCompletionTokens instead

[Muchaszewski]

Feature Request

Is your feature request related to a problem? Please describe.

MaxTokens is now depracitated, use MaxCompletionTokens instead

Describe the solution you'd like

Source: https://platform.openai.com/docs/api-reference/chat/create

max_tokens is Deprecated

Optional
The maximum number of [tokens](https://platform.openai.com/tokenizer) that can be generated in the chat completion. This value can be used to control [costs](https://openai.com/api/pricing/) for text generated via API.

This value is now deprecated in favor of max_completion_tokens, and is not compatible with [o1 series models](https://platform.openai.com/docs/guides/reasoning).

max_completion_tokens

Optional
An upper bound for the number of tokens that can be generated for a completion, including visible output tokens and [reasoning tokens](https://platform.openai.com/docs/guides/reasoning).

Either convert current to non-obsolete max completion tokens or mark it as obsolete and add max_completion_tokens

Other solutions

Add this field manually via overload but ChatResponse is sealed :/

Additional context

https://platform.openai.com/docs/api-reference/chat/create