Replit has launched Agent 3, the latest version of its autonomous AI agent, making it available to all users on its platform without limitation. Agent 3 aims to serve developers and technical teams seeking advanced automation in application development and testing. The feature is deployed on the Replit web platform, accessible globally wherever Replit is supported.
AI agents can prototype apps… But shipping real software takes hours of testing, debugging, and refactoring.
— Amjad Masad (@amasad) September 10, 2025
Agent 3 is 10× more autonomous — it keeps going where others get stuck.
The “Full Self-Driving” moment of software. pic.twitter.com/z66nxQKieO
Agent 3 introduces a suite of capabilities, such as:
- Live app testing in a real browser
- Periodic self-determined testing
- Automatic fixing of detected issues
The "Max Autonomy" beta allows for sessions extending 200 minutes or more, during which Agent 3 manages tasks and monitors its own progress with minimal user intervention. Unlike Agent V2, the new version can generate additional agents and workflow automations, including integrations with third-party tools like Notion, Slack, Dropbox, and Google Drive, all managed through a simplified UI connection flow. Users can create bots for platforms such as Telegram and Slack or set up automated reminders and reports, expanding the range of possible automations beyond prior releases.
Replit, the company behind Agent 3, is known for its browser-based software development environment that emphasizes rapid prototyping, app deployment, and collaborative coding. With Agent 3, Replit continues to focus on automation and AI-driven development, responding to user demand for more autonomous software agents capable of managing increasingly complex coding and workflow tasks.
