RReplit Agent 4

Replit Agent 4 Builds Apps, Decks and Data Tools in Parallel

More than 50 million people have used Replit, and on March 11, 2026 the company gave them Agent 4, an agent that plans, designs, codes and publishes software from a written request. The launch came with a confirmed $400 million Series D led by Georgian at a $9 billion valuation, roughly triple the figure of six months earlier.

Agent 4 fits founders and product teams who want a working app in one browser tab. Starter is free, Core costs $20 a month and Pro costs $100. Effort-based billing is the main thing to plan around, since a hard request can cost several times more than a small one. Agent 4 scores 8.8/10 on our scale.

Replit’s Series D, User Base and Agent 4 Launch Figures

These figures come from the launch coverage, Replit’s own pricing pages and the two review sites where Agent 4 and Replit are rated.

The revenue target says a lot about where Replit is pointing the product. A company aiming for $1 billion a year needs business accounts, and Agent 4 adds features that suit teams: parallel tasks, 15-builder Pro workspaces and Enterprise controls such as SCIM and audit logs.

The Product Hunt result was modest for a company of Replit’s size, at #8 on launch day. Replit’s base is already large, though, and most users meet Agent 4 inside the product they already use.

How a Prompt Becomes a Published Replit App

A user opens a Replit workspace in the browser and describes what they want. The agent then moves through planning, design, building and publishing. Each stage can be watched and stopped.

Plan Mode Before Any Code Changes

Plan Mode asks the agent to lay out the steps first. The user can edit the plan before work starts. Replit’s docs note that Plan Mode can bill for reasoning even when no code changes, so a long planning session on a paid model still uses credits.

Running Up to 10 Agent Tasks at Once on Pro

Core allows one Agent task at a time. Pro allows up to 10. A product manager could ask for a signup flow, a settings page and a bug fix in one sitting, and the agent works on all three. Replit says Agent 4 resolves conflicts between parallel tasks automatically, and smart sequencing lets users send requests in any order.

The Design Canvas and UI Variants

Agent 4 adds an infinite canvas where the agent generates several versions of a screen. The user picks one, and the agent builds the chosen version into the app. One project can hold a web app, a mobile app, a slide deck and a data app together.

What a Person Still Reviews

Replit’s pricing page states that the agent “may occasionally make mistakes.” Capterra reviewers describe cases where it changed things without being asked or reported a task as done when it was not. A person should test every flow before publishing, and teams should keep the database rollback window in mind: 7 days on Core and 28 days on Pro.

A First Agent 4 Project, Step by Step

A new user signs up for Starter, opens a workspace and types a request such as a booking page for a small studio. The agent proposes a plan in Plan Mode. The user edits the plan, removes anything out of scope and switches to Build Mode.

The agent then writes the code, creates the database tables and runs the app in a preview. On the design canvas it can offer two or three layouts for the booking screen. The user picks one, tests the booking flow and asks for changes in plain language. When the flow works, the user publishes it to a Replit URL. On Starter that is the one published app the plan allows.

A second request can follow at once. On Core it waits for the first task to finish. On Pro it runs alongside the first, and Replit merges the two sets of changes.

Data, Access and Rollback Controls

Every plan keeps the database inside the Replit workspace. Core can restore the database to any point in the last 7 days, and Pro extends that to 28 days. On Enterprise, admins get SSO and SCIM for user provisioning, audit logs, centralized security settings and single-tenant or private networking. Teams on Core and Pro manage access by inviting collaborators, up to 5 on Core and 15 on Pro.

Starter, Core, Pro and Enterprise Plans on Replit

All prices below come from Replit’s pricing page and help docs. Annual billing lowers Core and Pro by about 10%.

Effort-Based Credits and the Five-Hour Free Mode Reset

Replit splits usage into Free Mode and paid modes. Free Mode costs nothing within each plan’s allowance, which resets every five hours with a weekly cap. Paid modes use effort-based pricing, so the charge depends on how hard the request is. Replit asks for confirmation before a paid action starts. Credit packs add a small discount: $300 of credits costs $290, $500 costs $480 and $1,000 costs $950.

Three Replit Budgets Worked Out

A solo founder on Core pays $18 a month on annual billing, or $216 a year. If one launch month needs an extra $100 pack, the year comes to $316.

A product team of up to 15 builders on Pro pays $90 a month on annual billing, or $1,080 a year. Adding a $300 pack every quarter at $290 each brings the year to $2,240, or about $187 a month.

A heavier team that buys one $1,000 pack a month on top of Pro annual pays $1,080 plus $11,400 in packs, a total of $12,480 a year. The pack discount saves $600 of that against buying credits at face value.

Replit Agent 4 Next to Lovable, v0 and Atoms

Each of these tools turns prompts into working apps. The table uses each vendor’s published entry price.

Replit’s main difference is breadth. One project can hold a web app, a mobile app, a deck and a data app, and Pro runs 10 tasks at once. Lovable and v0 bill against plain monthly credit pools. Atoms is the closest on price, and its Race Mode runs several agents on the same task so a user can pick the best output. Replit runs different tasks side by side, which suits a team with a backlog more than a single builder chasing one result. Teams that want more choice can browse our AI coding agents list.

Product Teams and Founders Who Get the Most From Agent 4

Agent 4 suits a founder who needs a working product before hiring engineers. The browser workspace includes hosting and a database, so there is no server to set up. It also fits product managers at larger companies who want to test an idea with real screens before asking engineering for time.

Teams that build many small internal tools also fit. A sales operations lead could ask for a quote calculator, a lead intake form and a reporting page in one afternoon on Pro, with each running as a separate task.

Small agencies that build internal tools for clients can use Pro’s 15-builder limit and parallel tasks to run several client projects in one account. Teams already using Linear or Notion can link those tools to Agent 4.

Builders Who May Want to Wait on Replit

Finance teams that need a fixed monthly AI bill may prefer to wait until they have watched a few months of effort-based charges on a smaller plan. Engineering teams working in a large existing codebase may find an IDE-based agent such as GitHub Copilot Cloud Agent a closer fit, since it works inside their current repositories and review process.

Regulated companies should ask Replit for its security documentation before rollout. The pricing page lists Enterprise controls such as SSO and audit logs but does not mention SOC 2.

What Capterra Reviewers Report About the Replit Agent

On Capterra, Replit holds 4.4 stars from 159 verified reviews. The most common praise is speed: reviewers describe going from an idea to a working app in one session, and several non-coders say they deployed apps without touching servers.

The complaints cluster around the agent and credits. Reviewers say it sometimes goes in circles on a hard bug, repeats a faulty fix or breaks one feature while fixing another. Since the agent’s own fixes use credits, those loops cost money. Some business reviewers also disliked repeated pricing changes. Replit could address this by publishing typical credit costs for common tasks.

Two habits reduce the risk reviewers describe. Keep each request small and specific, and review the plan before switching to Build Mode. When the agent repeats the same fix twice, stop the task, roll back and rephrase the request with the exact error message.

Replit’s 2026 Timeline in Dated Steps

• January 2026: reports of a $400 million round at a $9 billion valuation first appear.
• March 11, 2026: Replit confirms the Series D and launches Agent 4, led by Georgian.
• March 2026: Agent 4 launches on Product Hunt and finishes #8 of the day.
• 2026: Replit’s plan docs list up to 10 parallel Agent tasks on Pro and two-month credit rollover.

Where Replit Agent 4 Lands on Our 10-Point Scale

Agent 4 scores 8.8/10. It earns high marks for autonomy and setup: the agent plans, designs, builds and publishes inside one browser tab, and Starter costs nothing. Pricing value scores lower because effort-based billing makes a month hard to forecast. User sentiment reflects a 4.4 Capterra rating held back by reports of agent loops.

For a founder or product team that wants to see real screens this week, Agent 4 is a practical choice. Teams that need a fixed AI budget should start on Core, track a month of credit use and then decide on Pro.

Questions Founders Ask Before Paying for Replit Agent 4

Can I Try Replit Agent 4 Without Paying?

Yes. Starter is free with a daily Agent allowance, limited cloud credits and one published app. Core at $20 a month adds Plan and Build modes and unlimited published apps.

How Does Replit Charge for Agent Work?

Free Mode usage is included up to each plan’s allowance, which resets every five hours. Paid modes use effort-based pricing, so the cost depends on request complexity. Replit asks for confirmation before a paid action starts.

How Many Agent Tasks Can Run at the Same Time?

Core runs one Agent task at a time. Pro runs up to 10, and Replit resolves conflicts between them automatically.

Do Unused Replit Credits Carry Over?

Core credits reset each billing cycle. Pro credits roll over for two months. Referral or promotional credits have their own expiry dates.

Which Tools Does Replit Agent 4 Connect To?

Replit lists Linear, Notion and Databricks among Agent 4 integrations. A product manager can point the agent at a Linear issue or a Notion spec, and a data team can build a data app on Databricks tables. The workspace also includes its own database and hosting, so a basic app needs no outside services.

Is Replit Agent 4 Suitable for Enterprise Use?

The Enterprise plan adds SSO, SCIM, audit logs, advanced privacy controls and single-tenant or private networking options. Replit names Zillow, PayPal, Adobe and Atlassian among business users. Security teams should request compliance reports directly.