# /async/chat/completions* stops working

Calls to /async/chat/completions* on Perplexity stopped working on September 27, 2026.

- API: Perplexity (api.perplexity.ai)
- Kind: Endpoint removal
- Takes effect: September 27, 2026
- Calls after that day: fail
- Calls it hits: `/async/chat/completions*`
- Source: [Announcement](https://docs.perplexity.ai/docs/agent-api/migrate-from-sonar/overview)
- Page: https://www.okapi.bot/providers/perplexity/breaking-changes/async-chat-completions-stops-working/

## What to use instead

Submit an Agent API request (POST /v1/agent) with background: true and poll the response by id.