Replit Agent 4 Is Here: Everything You Need to Know
Channel: Peter Yang
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Duration: PT647S
Read a transcript preview of “Replit Agent 4 Is Here: Everything You Need to Know” from Peter Yang, uploaded on 2026-03-11.
Transcript preview
Language: English (original, YouTube automatic captions)
[0:01] Hey everyone. All right, I'm back today
[0:03] with another no hype review.
[0:05] This time of Replit's Agent 4, which is
[0:07] launched today.
[0:09] Now, Agent 4 lets you plan, design, and
[0:11] build an app with multiple AI agents all
[0:14] at the same time.
[0:15] And here's three new features that Agent
[0:17] 4 has. You can design multiple
[0:19] variations on an infinite canvas. You
[0:22] can build using multiple AI agents in
[0:24] parallel. And finally, you can go beyond
[0:27] generating apps to generating slide
[0:29] decks, animations, and more.
[0:32] But let's put Agent 4 to test. Can it
[0:34] actually generate something good?
[0:36] So, here's the thing. I've always wanted
[0:37] an app where I can easily track my
[0:40] habits. So, basically, I can open the
[0:43] app to see a calendar view
[0:46] to create and check off up to three
[0:48] habits, and I can also see streaks
[0:51] to help me stay motivated. All right, so
[0:54] let's go ahead and use Replit Agent 4 to
[0:56] build this app right now. And let's use
[0:58] this prompt that I have here and paste
[1:00] it into Replit. Okay, so here I am in
[1:02] Replit, and I pasted the prompt in.
[1:04] Let's take a look at this prompt. It's
[1:06] pretty simple. We want a mobile habit
[1:07] tracker. We want two tabs, a calendar
[1:09] and a habits view.
[1:11] And we want to start with four design
[1:13] variants for the calendar tab using
[1:16] canvas, which is new to Agent 4. All
[1:19] right, so we want to have a glassmorphic
[1:20] variant, RPG quest gaming variant. We
[1:23] want to have a botanical variant where
[1:25] you're kind of growing plants and
[1:26] forming habits. And we want Agent 4 to
[1:28] surprise us to see what it comes up
[1:30] with. So, let's go ahead and su