Migrate from LiteLLM to Portkey

Step-by-step guide for migrating Python applications from LiteLLM to the Portkey AI Gateway SDK. Portkey uses an OpenAI-compatible client interface, so most code changes are structural (client instantiation and config) rather than call-signature changes.

Additional References:

• Detailed Migration Patterns - Every LiteLLM pattern with before/after code
• Proxy & Config Migration - LiteLLM Proxy → Portkey gateway migration

Pre-Migration Checklist