MiniMax LLM API upgrade

[ProgrammerPlus1998]

Checked

• I searched existing ideas and did not find a similar one
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• I've clearly described the feature request and motivation for it

Feature request

LangChain now calls the large language model ChatCompletion interface and upgrades it to call ChatCompletion Pro
MiniMax document：https://api.minimax.chat/document/guides/chat-model/pro?id=64b79fa3e74cddc5215939f4

Motivation

MiniMax, built upon the ChatCompletion API, has introduced ChatCompletion Pro. While ChatCompletion supports abab5.5 and abab5.5s models, ChatCompletion Pro extends its support to abab5.5, abab5.5s, and abab6 models. Currently, the MiniMax abab6 interface is not functional in LangChain.

Proposal (If applicable)

I would like to confirm if there is a development plan. If needed, I am willing to write and submit the code.