📣 It’s a very special day here at Replit- we are proud to introduce Agent 3, our most autonomous Agent yet 🔥 What's new with Agent 3: ⚡️Tests & fixes the App it builds automatically using a browser- checking buttons, forms, links and APIs. ⏲️Runs for 200+ mins autonomously as it is building, testing and fixing your app- eliminating the need for manual oversight. ⚙️Builds Agents and automations to automate complex & repetitive tasks. You can now build Slack or Telegram bots or workflow automations integrated with Notion, Linear, Sharepoint, Dropbox & more in plain English. Agent 3 starts rolling out to all users today. More details on whats launching today below 👇
AI agents can prototype apps… But shipping real software takes hours of testing, debugging, and refactoring. Agent 3 is 10× more autonomous — it keeps going where others get stuck. The “Full Self-Driving” moment of software.
Replying to @Replit
@Replit Tried your new Agent 3 on the Core plan today and burned through my entire usage in under 24h on a simple premade GitHub repo (already 90% built) and spent 4 hours chasing a port issue the agent couldn’t solve. Fixed it myself with one line of code asking ChatGPT 👎

Sep 12, 2025 · 4:20 PM UTC

2