Bolt vs v0: Which AI Builder Should You Use?

Bolt and v0 both turn a prompt into a working, full-stack application with a real database and exportable code, but they part ways on how much Git and deployment process sits between a prompt and a live URL. v0 is a Vercel product through and through: connect a project to GitHub and every publish becomes a tracked branch, a pull request, and a CI check, with v0 permissions and Vercel permissions kept deliberately separate. Leave GitHub out and v0 deploys the current code straight to Vercel. Bolt is StackBlitz's own product: it edits more directly, hosts on its own bolt.host infrastructure by default, and doesn't route changes through a pull request unless you set that up yourself in GitHub.

What does each one actually build?

v0's own introduction describes itself as "an AI agent that helps anyone create real code and full-stack apps and agents," built to "Ship features, refine designs, update copy, and create live prototypes, all with a prompt. Deploy to production immediately, or open a pull request for review" (v0 Docs, "What is v0?", checked September 2026). It's explicit about going past a static mockup: "End-to-end Development: Build both UI and backend logic, not just mockups" (same source).

Bolt's own documentation describes itself as "an AI-powered builder for websites, web apps, and mobile apps," naming three categories — "Websites like landing pages, personal and corporate websites, e-commerce shops, and more," "Web apps such as project management tools, job boards, CRMs, SaaS platforms, booking platforms, and beyond," and "Mobile apps including games, productivity tools, social apps, workout planners, and whatever you imagine next" — and adds that "Bolt builds full-stack web applications using a wide range of JavaScript-based web frameworks. To build mobile apps, you use the Expo integration" (Bolt, "Intro to Bolt", checked September 2026). Both vendors also document a Figma import path, so starting from an existing design isn't a differentiator here — Bolt's own page lists "Import a Figma design. Turn a Figma frame into a working project" alongside its other starting points (same source).

How does each one handle Git, branches, and publishing?

This is where the two products genuinely diverge. Once a v0 project is connected to GitHub, v0 wraps every code change in a governed branch-and-pull-request flow. Without GitHub, "Projects without GitHub deploy the chat's current code directly to the connected Vercel project" (v0 Docs, "Deployments", checked September 2026). For GitHub-backed projects, the documentation describes three branch roles — Default, Base, and Working — and states that "When v0 has a code change to push, it creates a working branch from that base. Generated code changes are then committed and pushed to the working branch automatically" (v0 Docs, "GitHub", checked September 2026). Publishing isn't a direct push: "v0 creates a pull request if the branch does not have one, or reuses its existing pull request. It then merges the pull request into the base branch and waits for the production deployment" (same source), and the repository's own rules still apply — "Required checks, required reviews, draft pull requests, and other branch protections can block the merge" (same source). v0 also keeps its own permission system separate from Vercel's: "Actions in the v0 web app use your v0 role, while GitHub-triggered deployments and the Vercel CLI use your Vercel role and project permissions" (same source).

Bolt edits more directly and leaves branch merging to GitHub itself. Once connected, "Bolt manages the technical Git steps for you," and each branch "has its own memory, so nothing bleeds over between them" (Bolt, "GitHub for version control", checked September 2026) — but there's no built-in pull-request gate: "Bolt currently doesn't support merging branches in-app. You need to merge branches in GitHub" (same source). Both tools can start from an existing repository: v0's GitHub docs describe "Import from GitHub," which "creates a chat at the selected base branch" without altering the source repo directly until a PR merges (v0 Docs, "GitHub"), while Bolt's docs put it more simply — "You can bring an existing GitHub project into Bolt, or start building in Bolt and create a new GitHub repository for your project" (Bolt, "GitHub for version control"). If you don't want to touch Git at all, Bolt also documents a direct zip export: "You can download your project as a zip file to work on it outside of Bolt, using your own code editor" (Bolt, "Manage your projects", checked September 2026).

Where does each one host a published project?

v0 deploys exclusively to Vercel, and its documentation is direct about it: "v0 deploys projects to Vercel. Working branches get preview deployments for review, while publishing updates the Vercel project's production deployment and stable production URL" (v0 Docs, "Deployments", checked September 2026). Your first publish walks through domain setup: "Confirm the provided vercel.app domain, select a connected custom domain, or open Vercel to add one" (same source), and anything past that — "Advanced DNS configuration, redirects, and other domain settings" — happens in the Vercel dashboard itself, not inside v0 (same source). Teams can also lock this down further: "Teams can configure Deployment Policies that restrict which Git sources and deployment mechanisms can create deployments" (same source).

Bolt hosts on its own infrastructure by default, unconnected to Vercel: "When you publish a project with Bolt, it automatically goes live on a free bolt.host domain" (Bolt, "Domains", checked September 2026). A custom domain needs a paid plan and doesn't survive a downgrade: "If you downgrade to the Free plan, you'll no longer be able to publish to your custom domain" (same source). Unlike v0, Bolt's gate sits entirely at the domain level, not in the deployment process itself.

What database options does each one offer?

v0 documents the widest provider choice of the two: "v0 enables simple, one-click database integrations with popular providers, including Upstash, Neon, Supabase, and Vercel Blob" (v0 Docs, "Databases", checked September 2026), plus a separate Snowflake connection "to build data apps, query accessible tables, and deploy apps to Snowflake" (same source). Adding one provisions real, independently-owned infrastructure: "Adding an integration provisions a new user account on that service and adds the necessary environment variables to your project" (same source).

Bolt's default is narrower but automatic: "Bolt creates a database automatically if your project needs one, or if you explicitly ask Bolt to create a database or a database-related feature" (Bolt, "Database", checked September 2026), with Supabase as the one documented alternative: "If you prefer to use Supabase when creating a new project, you can select it during setup" (same source).

Capability matrix

Who is each one not for?

v0 is not the fit if you want a GitHub repo without Git process — once a project is connected, every publish, even a small copy change, moves through a branch and a pull request, and a required review or branch protection rule can hold up a release until someone approves it in GitHub. It's also not the fit if you want hosting independent of Vercel.

Bolt is not the fit if you need the widest choice of managed database providers without leaving the builder, or if your team specifically wants deployment permissions split from prompting permissions the way v0's role system does it.

Is Figment a fit for either kind of project?

No. Figment publishes a Figma design as a live website through its Figma plugin; it doesn't generate an application from a prompt, provision a database, or manage Git branches, and its AI editor is public now, working on a separate static copy of a site. Neither Bolt nor v0's job — a prompt-generated, database-backed application with a real deployment pipeline — is what Figment does. Our What is Bolt.new and v0 vs Lovable guides cover each vendor's own mechanics and Lovable's different fork of this same comparison in more depth than repeated here.

Which should I actually pick?

• Pick v0 if you're already on Vercel, want deployments gated by branch protections and a real pull-request review step, or need a specific database provider like Neon or Upstash without leaving the builder.
• Pick Bolt if you want a more direct edit-and-publish loop without a mandatory PR step, or you'd rather host on Bolt's own infrastructure than commit to the Vercel ecosystem.
• Check both vendors' current pricing pages before committing — v0's per-model token rates and Bolt's token allowances are each set on pages that update independently of this guide.

Bottom line: both generate a real, exportable full-stack application, so the decision comes down to how much process you want between a prompt and a live site. v0 bakes in Git governance for GitHub-connected projects — branches, pull requests, CI, and a permission split between prompting and deploying — because it's a Vercel product end to end. Bolt keeps the loop shorter and owns its own hosting and database by default, leaving branch merging and process rigor up to you. Pick based on whether you want that structure imposed or optional.