
Perplexity Sonar provides models for web-grounded answers.
Support for the Sonar Chat Completions API ended on September 27, 2026. Perplexity recommends Agent API for new integrations. Existing clients should follow the official migration guide for endpoint, request and response changes, including streaming behavior.
Distinguish the Sonar models from the legacy Chat Completions interface. Do not assume that an unchanged legacy request has the same behavior or billing as an Agent API request.
Sonar is Perplexity’s model family for web-grounded answers. Support for Sonar Chat Completions ended on September 27, 2026. Perplexity continues accepting synchronous and streaming requests while progressively converting them to Agent API requests. Direct migration requires client changes to requests and response handling; asynchronous Sonar requests must move to background mode.
Sources (checked ): Perplexity Sonar migration; Perplexity Sonar migration steps
Check Perplexity’s current rate card for the model and interface you use. Agent API bills model input and output tokens, with separate charges for tool invocations such as search. The Sonar migration guide explains the supported request paths and how existing integrations transition.
Sources (checked ): Perplexity API pricing; Perplexity Sonar migration
Verified against the official Perplexity Sonar website and documentation.