Replit Agent is the AI builder inside Replit's browser-based cloud IDE. You describe an app in plain language and the agent scaffolds the project, writes the code, installs packages, runs the app, and can push it to a live URL — all without leaving the browser or configuring a local environment. The infrastructure (database, auth, hosting, monitoring) is provisioned for you, so a prompt can go from idea to deployed app in one session.

It is aimed at builders who want the whole loop — generation, execution, and hosting — in one place: founders prototyping a product, non-developers shipping internal tools, and developers who want a throwaway environment that is already wired up. The current generation ships as Agent 4.

Highlights

Prompt to running app — describe what you want and the agent generates a full-stack project, installs dependencies, and runs it so you can see it working immediately.
Built-in deployment and hosting — publish to a live URL, attach a custom domain, and let Replit handle scaling, with auth and a PostgreSQL database available out of the box.
Design Canvas — Agent 4 adds an infinite design board for tweaking layouts and UI visually while the agent builds other parts of the app concurrently; changes apply directly to the codebase.
Concurrent task execution — Agent 4 splits work into independent forks that run in parallel (authentication, database, frontend), then merges the results, so complex apps build faster.
Checkpoints — the agent works in reviewable steps you can roll back to, with effort-based billing per checkpoint (simple changes cost less; complex multi-step tasks are bundled into a single, proportionally priced checkpoint).
Integrations — connect to external services (Stripe, OpenAI, Notion, Linear, and others) so generated apps can call real APIs through a credential-management UI rather than manual key pasting.

In an AI-assisted workflow

Replit Agent fits the "zero to deployed" end of the spectrum, where you want infrastructure handled for you rather than editing files on your own machine. A typical loop is to prompt the agent for a first version, watch it build and run, then iterate in plain language and ship.

Build a feedback board where users sign in, post ideas,
and upvote them. Use a Postgres table for ideas and votes,
then deploy it.

The agent scaffolds the app, provisions the database, runs it for review, and — once you confirm — publishes it to a live URL.

TIP

Treat the first prompt like a spec: name the data model, the auth requirement, and whether you want it deployed. The more concrete the prompt, the fewer checkpoints the agent burns getting there.

Good to know

Replit runs entirely in the browser (plus a mobile app), so there is nothing to install. Pricing is freemium: a free Starter tier includes limited daily Agent credits and lets you publish one project, while Core ($20/month billed annually, $25/month monthly) adds $25 of monthly usage credits, up to 5 collaborators, and two concurrent agents. Pro ($95/month annually, $100/month) raises credits to $100/month, supports up to 15 collaborators and 10 concurrent agents, and includes database rollbacks and priority support. Enterprise adds SSO/SAML, SCIM, VPC peering, and static outbound IPs on custom pricing.

WARNING

Credits are a shared pool covering Agent runs, hosting, database compute, and data transfer — and on Core they expire each billing cycle rather than rolling over. Replit uses effort-based pricing per checkpoint: simple edits are cheap, but complex multi-component builds cost proportionally more, so real monthly spend depends heavily on how much you build and how ambitious your prompts are.

Highlights

In an AI-assisted workflow

Good to know

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