Replit switched its default AI provider for Replit Agent from Anthropic to OpenAI, citing cost, performance and partnership considerations.
CEO Amjad Masad clarified that users can still pick Claude and other supported models.
Defaults decide most usage, so this quietly moves a lot of volume between labs.
Our take
Default settings are the new distribution deal.
From the issue
The US just banned DeepSeek from federal agencies, two days after its best model yet Monday, October 19, 2026