Anthropic: Allow the use of kwargs consistent with ChatOpenAI. (#9515)
- Description: ~~Creates a new root_validator in `_AnthropicCommon` that
allows the use of `model_name` and `max_tokens` keyword arguments.~~
Adds pydantic field aliases to support `model_name` and `max_tokens` as
keyword arguments. Ultimately, this makes `ChatAnthropic` more
consistent with `ChatOpenAI`, making the two classes more
interchangeable for the developer.
- Issue: https://github.com/langchain-ai/langchain/issues/9510
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Co-authored-by: Bagatur <baskaryan@gmail.com>