📣 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 👇
Amjad Masad
 @amasad
Sep 10
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.

Sep 10, 2025 · 4:01 PM UTC

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Also checkout replit.com/agent3

Replit - Agent 3

Replit - Agent 3 - Autonomous AI Vibe Coding Agent builds, tests & fixes apps automatically. 10x more autonomous, 200min runtime, integrates with Slack, Notion & more.

replit.com
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Or read Agent 3 blogpost at: blog.replit.com/introducing-…

Replit — Introducing Agent 3: Our Most Autonomous Agent Yet

We’re excited to introduce Agent 3—our most advanced and autonomous Agent yet. Compared to Agent V2, it is a major leap forward. It is 10x more autonomous, with the ability to periodically test your...

blog.replit.com
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Replying to @Replit
Stitching apps, tests, and automations together feels like a self-sustaining agent ecosystem. Curious, how it prioritizes failures across longer autonomous runs!
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Replying to @Replit
Unfortunately the Building AI Agent feels unchanged from months ago. It needs major improvements. The Architect Agent just burns credits telling it to improve, while the Agent must iterate endlessly to get results. Please improve the Building AI Agent.
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Replying to @Replit
Been following for a while, congrats on the continued improvement
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Replying to @Replit
Let's discuss what's next on @TechImpactTV or my podcast!
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Replying to @Replit
congrats, this is huge!
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And join us to discuss what's next on @TechImpactTV!
Replying to @Replit
Insane drop, testing has been a bottleneck for me when I vibe code so personally super stoked about the potential here 👊🏻
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Replying to @Replit
Impressive. Automating testing and fixes significantly streamlines development workflows. This changes things.
Replying to @Replit @InternetH0F
Agent 3 sounds like a whole dev team in one bot
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Replying to @Replit
And now the important question: How much does it cost?
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Replying to @Replit
What a sad day, I was raving about Replit just last week. The new agent 3 now costs me 2-3x, takes 4x as long, and gets stuck in loops. #HateIt #ImOut
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Replying to @Replit
I tried a new idea that I had. It doesn't seem any different other than a lot of messages about what it's testing. When I try testing functionality myself, nothing is working. Testing has a long way to go.
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Replying to @Replit
Insane. Not looking forward to the usage costs I'm about to incur
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Replying to @Replit
I am not pleased with Agent3, costs are very high and apps that worked for months are broken suddenly after agent3 decides to make some changes. I also lost control about what the agents decides to work on. Can we get an option to select which agent to use?
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Replying to @Replit
Really disappointed with @Replit Agent v3 😡 Credits vanish 💸 Tasks take forever (50+ mins!) ⏳ Simple menu cost me $5.18 and broke my layout Can’t even see per-app spend anymore This update made my project unusable.
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Replying to @Replit
This thing is completely broken and not working at all
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Replying to @Replit
Replit support is terrible! Improve your human team first!
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Replying to @Replit
Tried it. Costs now are just crazy! 8$ for a couple of prompts with small changes?? Too bad I have a yearly subscription that ends still in a couple months. Good luck, I am out. 👍
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Replying to @Replit
Relasing a product that doesn't work well yet and charging a fortune to the people that are contributing to testing it to make it work better is not cool. You'll be losing a loyal customer very soon.
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Can replit review and work with a code base I've already been working on for over a year?
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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 👎
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Replying to @Replit
I have a Core plan, and my most recent payment period has already been made. For several days now, I've been receiving payment messages again by email. On the 13th, I see that the platform has changed my plan to Basic, and it says I've exceeded my credit usage. This can't be poss
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Replying to @Replit
Agent3 has pretty much destroyed all my code & I will be rolling back days & days of work if I can't get it back on track. Something not good with Agent3. It Can't remember basic instructions from past prompt & proactively touching other parts of the code when you never asked,
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Replying to @Replit
The app is slow as molasses now and I am paying lots of money to use it. Please fix the slowness and lag.
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This is awesome!
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the death of purple
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Replying to @Replit
Y'all are on fire!! My schedule is busy today, but cleared tomorrow for me to dive in and check out A3!
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Replying to @Replit
This is guuud tech
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Replying to @Replit
how do i get through to customer support? My app has inexcusable down time.
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Replying to @Replit
I want to be able to use Agent 3 only on demand, and I want my money back.
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Replying to @Replit
×10 autonomous ×5 the price
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Replying to @Replit
for over a month of creating apps, i need to redo, because the apps is crashing.. and this time, even they advance there model. i think thisis agood money machine they created. promising to client that anything can built, yet it crash all the time.. @Replit
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Replying to @Replit
Very bad update, very expensive and not effective
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