Perplexity Upgrade & Migration Current State ! ! Overview Guide for migrating between Perplexity model generations and API changes. Perplexity has evolved from pplx-api with third-party models to the Sonar family with built-in web search. Model Evolution | Era | Models | Status | |-----|--------|--------| | Legacy (pre-2025) | , , | Deprecated | | Current (2025) | , | Active | | Extended (2025+) | , | Active | Instructions Step 1: Identify Legacy Patterns to Update Step 2: Model Name Migration Map Step 3: URL Migration Step 4: Parameter Changes Step 5: Upgrade OpenAI SDK Rollback Error Handli…