Openai Proxy Route

Pass-through endpoint for OpenAI API calls.

Available on both routes:

• /openai/{endpoint:path} - Standard OpenAI passthrough route
• /openai_passthrough/{endpoint:path} - Dedicated passthrough route (recommended for Responses API)

Use /openai_passthrough/* when you need guaranteed passthrough to OpenAI without conflicts with LiteLLM's native implementations (e.g., for the Responses API at /v1/responses).

Examples: Standard route: - /openai/v1/chat/completions - /openai/v1/assistants - /openai/v1/threads

Dedicated passthrough (for Responses API):
- /openai_passthrough/v1/responses
- /openai_passthrough/v1/responses/{response_id}
- /openai_passthrough/v1/responses/{response_id}/input_items

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