Design in code on an infinite canvas
Work on an infinite design canvas, explore visually, and apply changes directly to the app while the agent builds other parts in parallel.
Agent 4
RivendicaAgent 4 is Replit’s web-based AI agent for building apps, sites, decks, and other projects in one workspace. It combines visual design editing, task coordination, and parallel execution for individuals and teams.
What Agent 4 is
Agent 4 is Replit's fastest, most versatile agent, positioned around four workflow pillars: Design Freely, Build Together, Ship Anything, and Move Faster. It is built to help people create apps and other digital projects inside Replit while keeping design, coordination, and execution in the same workspace.
The product copy emphasizes an infinite design canvas, in-place visual editing, shared project context, and parallel agent work. It is presented for people who want to refine designs while an agent builds, coordinate tasks with a team, and move from one idea to multiple deliverables without leaving the project.
Core capabilities
Precise design controls
Use multi-select, hover and active state editing, hover-to-preview interactions, and responsive overrides to make targeted design changes inside the UI.
Variant exploration
Generate alternative variants for an element and compare them in context before applying the option you want.
One project for multiple output types
Create mobile and web apps, landing pages, decks, videos, and more in the same project with shared context and design.
Service-task workflows
Ask Agent 4 to handle related service tasks such as creating Linear tickets, answering questions in Notion, or analyzing Excel data.
Parallel task execution
Run independent tasks at the same time and let the agent split large work into forks that are completed concurrently and combined afterward.
Practical ways to use Agent 4
Iterative app design
Use the design canvas to refine layouts visually while the agent continues building other parts of the app, which is useful when you want design and implementation to stay in sync.
Team coordination during build work
Have a team submit requests in whatever order they arise, then let Agent 4 sequence and execute them while everyone follows task-based progress.
Parallel feature delivery
Work on several parts of a product at once, such as auth, database logic, back-end functionality, and front-end design, with the agent running tasks in parallel.
Multi-format project production
Build different project types in one workspace, including mobile and web apps, landing pages, pitch decks, and videos, without moving context between tools.
Desktop-to-mobile conversion
Use the product to turn an existing web app into a mobile app, keeping code and related assets side by side so the conversion is easier to manage.
Pros and Cons
Pros
- Supports visual design editing directly in the app with an infinite canvas and immediate application of changes.
- Lets teams submit requests in any order and track task-based workflows while work continues in the background.
- Runs multiple tasks in parallel and can split larger work into concurrent forks before combining results.
- Covers a broad set of outputs, including apps, landing pages, decks, videos, and mobile conversions.
- Explicitly mentions workflow examples with Linear, Notion, and Excel.
Cons
- The source does not provide specific pricing numbers or plan details in the text shown.
- Supported integrations are only mentioned through a few examples, so the full ecosystem is not clear from the available copy.
FAQ
What is Agent 4 used for?
Agent 4 is presented as Replit's fastest, most versatile agent and is used for building apps, sites, decks, and other projects in a shared workspace. The source highlights design editing, collaboration, and parallel task execution, but it does not describe a separate installation flow or standalone app.
Does the pricing page show specific plan prices?
The source shows a pricing page for Agent 4, but it does not list exact prices or plan limits in the provided text. It indicates the product is offered through Replit, with a call to try Agent 4 now.
How does the design workflow work?
The page describes a design canvas with multi-select, hover and active state editing, hover-to-preview interactions, and responsive overrides. It also mentions that generated variants can be applied directly to the app.
Can teams collaborate while Agent 4 is building?
Yes. The product copy says requests can be submitted in any order, agents can run independent tasks in parallel, and task-based workflows help teams track what agents are doing and add tasks while work is in progress.
Which services or workflows are explicitly mentioned as supported?
The source specifically mentions creating Linear tickets, answering questions in Notion, and analyzing Excel data. It does not provide a full integrations list, so those are the only supported examples here.
Quick Facts
- Category
- AI development platform
- Product type
- Agent
- Platform
- Web
- Source domain
- agent3.replit.com
- Pricing
- Pricing page exists; exact prices not shown in provided text
- Notable workflows
- Design canvas, task sequencing, parallel execution, service-task examples