[Feature]: Support OpenAI's parallel_tool_calls

[minhduc0711]

The Feature

OpenAI recently added a new parallel_tool_calls parameter.

parallel_tool_calls: boolean, Optional, Defaults to true

Whether to enable parallel function calling during tool use.

Would be nice if we add the same parameter to the completion function.

Motivation, pitch

This is useful when I want only one tool call returned, without extra completion tokens being used for redundant tool calls.

Twitter / LinkedIn details

No response

[krrishdholakia]

doesn't this already work? @minhduc0711

[minhduc0711]

My bad, I wasn't aware that LiteLLM has already supported provider-specific params.

From https://docs.litellm.ai/docs/completion/input#provider-specific-params:

Providers might offer params not supported by OpenAI (e.g. top_k). You can pass those in 2 ways:

• via completion(): We'll pass the non-openai param, straight to the provider as part of the request body.
  e.g. completion(model="claude-instant-1", top_k=3)
• via provider-specific config variable (e.g. litellm.OpenAIConfig()).