docs(providers): add Meta Model API provider page

[mateo-berri]

Adds a provider page for the Meta Model API (meta/ route, muse-spark-1.1), which ships in BerriAI/litellm#32701. That PR points provider_endpoints_support.json at https://docs.litellm.ai/docs/providers/meta, so this page makes that link resolve

The page follows the structure of the existing Meta Llama page: required env vars (META_API_KEY, optional META_API_BASE), supported model and modalities, SDK usage for non-streaming, streaming, reasoning_effort (minimal through xhigh) and function calling, plus proxy config with OpenAI SDK, LiteLLM SDK and cURL examples. The sidebar entry sits alphabetically next to providers/meta_llama

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Note

Low Risk
Documentation and navigation only; no runtime or API behavior changes.

Overview
Adds a new Meta Model API docs page at docs/providers/meta so links from the main LiteLLM repo (e.g. provider_endpoints_support.json) resolve after the meta/ provider lands.

The page documents the meta/ route, META_API_KEY / optional META_API_BASE, muse-spark-1.1, and SDK examples for completions, streaming, reasoning_effort, and function calling, plus LiteLLM Proxy setup with OpenAI SDK, LiteLLM SDK, and cURL tabs.

sidebars.js registers providers/meta in the providers list immediately before providers/meta_llama.

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Project	Deployment	Actions	Updated (UTC)
litellm	Ready	Preview, Comment	Jul 10, 2026 12:53am

[mateo-berri]

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