StackBlitz Bolt
Also known as: Bolt, Bolt.new
Browser-native AI app builder from StackBlitz with open-source roots, token-based billing, and a visual edit-and-deploy experience for instant web app creation.
Bolt, found at bolt.new, is an AI-powered full-stack app builder from StackBlitz, the company behind WebContainers. It belongs to the wave of vibe coding tools that turn a plain-language prompt into a working web application, but its defining trait is technical: the entire development environment runs inside the browser tab. Thanks to WebContainers, a real Node.js runtime, filesystem, package manager, and dev server all run client-side, so when Bolt generates an app it writes real files, installs real npm packages, and starts a real server you can interact with, with no local setup at all.
What makes this different from a code generator is that Bolt gives its AI complete control over that environment, including the filesystem, terminal, package manager, and browser console. That lets its agents handle the whole app lifecycle, from creating the project to deploying it. You describe what you want to build, Bolt generates code across multiple files and shows a live, interactive preview beside it, and you refine by chatting or by editing the code directly. That hybrid approach suits both non-technical builders who want to stay in the conversation and developers who want to drop into the code.
Bolt handles the full stack, supporting popular JavaScript frameworks like React, Next.js, Vue, and Svelte, along with databases, API endpoints, and user authentication, and it added native hosting, databases, and auth through Bolt Cloud. Projects deploy in one click to providers like Netlify, Vercel, and Cloudflare, and you can import designs from Figma or existing code from GitHub as a starting point. The full codebase can be exported or synced to GitHub, so there is no lock-in.
Bolt is model-flexible, running on frontier models from Anthropic and others with support for the Model Context Protocol, and its core is open source on GitHub. It is SOC 2 Type II compliant, and because code executes in the browser's sandbox it stays isolated from the local machine. Bolt is best known as one of the fastest paths from a prompt to a running, shareable full-stack prototype, used by founders, product teams, and developers alike.
Vendor details
Canonical URL
https://bolt.new
Category
Agent builder
Company status
independent
Use cases & customers
Target customers
Deployment options
In practice
You want to spin up a full-stack prototype without installing anything. Bolt runs a real Node.js environment in your browser, so it writes the files, installs the packages, and starts a live dev server you can click through.
You're non-technical but your developer wants to take over later. Bolt lets you build by chatting while still exposing the real code, which you can edit directly or export and sync to GitHub with no lock-in.
You have a Figma mockup and need a working demo for an investor meeting tomorrow. Bolt imports the design, generates the React app around it, and deploys to a live URL in one click.
Sources & related URLs
Agentic Index coverage score
8.5 / 14 capabilities · 61%
| Integrations & Tool CallingOfficial site 2026-06-08 | Full |
|---|---|
| Workflow OrchestrationOfficial site 2026-06-08 | Full |
| Knowledge Grounding & RAGOfficial site 2026-06-08 | Partial |
| Human Oversight & GuardrailsOfficial site 2026-06-08 | Partial |
| Security, Identity & GovernanceOSS GitHub repo 2026-06-08 | Partial |
| Observability & AuditabilityOfficial site 2026-06-08 | Partial |
| Memory & State PersistenceOfficial site 2026-06-08 | Partial |
| Deployment & Data ResidencyBrowser-native deploy docs 2026-06-08 | Full |
| Prebuilt Agents, Templates & PacksOfficial site 2026-06-08 | Partial |
| Triggers & Channel CoverageOfficial site 2026-06-08 | Partial |
| Model Flexibility & RoutingOfficial site 2026-06-08 | Partial |
| APIs, SDKs & MCP ExtensibilityOSS GitHub repo 2026-06-08 | Full |
| Testing, Debugging & OptimizationOfficial site 2026-06-08 | Partial |
| Browser & Computer UseOfficial site 2026-06-08 | Unable to verify |
The Agentic Index coverage score grades every vendor Full, Partial or Unable to verify against the same 14 buyer facing capabilities, from public evidence only. Each capability links to how all vendors in the index score on it. How this evidence is graded
Recent platform changes
StackBlitz has officially retired the legacy v1 Agent and Discussion Mode for Bolt. All existing projects utilizing the v1 Agent have been automatically migrated to the default Bolt Agent. Additionally, Discussion Mode has been replaced by Plan Mode for strategic build planning without altering code.
Bears on: Agent capability
View sourceStackBlitz launched Bolt Slides, an open-source library and in-app capability that enables AI agents to generate interactive presentation decks as responsive React web apps. Each slide functions as a live web component, supporting embedded 3D models, live data visualizations, and interactive UI elements generated from a single text prompt.
Bears on: MCP / tool calling / API
View sourcePricing
Free (1M tokens/mo) · Pro $25/mo (10M tokens)
usage
Included quota
Free: 1M tokens a month with a 300K daily cap. Pro: 10M tokens a month with one month rollover, custom domains, no branding. Teams: per member token allotments (not pooled) with admin visibility. Claude models power generation (Sonnet default, Haiku/Opus selectable).
What is public
Bolt publishes full pricing: a free plan with 1 million tokens a month capped at 300,000 a day, Pro at 25 dollars a month with 10 million tokens and one month rollover, Teams at 30 dollars a member a month with per member allotments, and custom Enterprise. Annual billing discounts 10 percent. The underlying project is open source and can be self hosted.
Billing mechanics
Token based consumption model: every generation and fix deducts tokens scaled to complexity. Free plan resets monthly with a daily cap; paid plans include monthly token allotments with one month rollover, mid cycle token top ups available. Annual billing saves 10 percent. Teams tokens are per member, not shared.
Cost watchouts
Token consumption scales with project complexity and codebase size, not just prompt count, and per operation token costs are not publicly documented; complex builds with databases and auth can consume 500K to 2M tokens in the initial build alone, so heavy iteration on the Pro plan's 10M monthly tokens can run out mid month. Unused paid plan tokens roll over only one extra month. Free tier output carries platform branding.
Variable cost rationale
Consumption is token metered against undocumented, complexity scaled rates; identical subscriptions yield very different effective capacity, and heavy months require top ups or plan jumps.
Additional watchouts
Budget for token variance: the same monthly fee buys very different amounts of progress depending on project complexity, and community reports of expensive debugging loops persist. Self hosting the open source core avoids token costs entirely for capable teams.
Sales call required
No, self serve available
Free / trial
Free plan, no card (1M tokens/mo, 300K/day cap)
Lowest paid plan
Pro $25/mo (10M tokens, one month rollover); Teams $30/member/mo
Commercial notes
Built by StackBlitz on WebContainers (full Node.js in the browser). $135M raised through Dec 2025 (~$700M valuation at the Jan 2025 Series B); 0 to $40M ARR in about five months, 5M registered users by May 2025. Bolt V2 added Bolt Cloud (built in database, auth, file storage, edge functions) plus autonomous debugging, Figma import, and Expo native mobile output. Codebase is open source on GitHub and self hostable, the main cost escape valve.
Key ambiguities
Exact token consumption per operation is undocumented and varies with codebase size, making effective cost per app hard to predict; Enterprise pricing unpublished.
Missing data
Per operation token consumption rates and Enterprise pricing are unpublished.
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Alternatives to StackBlitz Bolt
The closest documented capability profiles to StackBlitz Bolt among agent builders tracked by Agentic Index, ordered by similarity on the same 14 point evidence the rankings use. No vendor pays for placement.
- Joget9.5 / 14Fuller documented coverage on Human Oversight & Guardrails and Security, Identity & Governance
- Lovable8.5 / 14Fuller documented coverage on Security, Identity & GovernanceStackBlitz Bolt vs Lovable →
- Maisa9.0 / 14Adds documented Browser & Computer Use
- Sema4.ai9.0 / 14Adds documented Browser & Computer Use
- AutoGPT10.5 / 14Fuller documented coverage on Observability & Auditability and Prebuilt Agents, Templates & Packs
- Dify9.5 / 14Fuller documented coverage on Knowledge Grounding & RAG and Observability & Auditability
Similarity is computed from each vendor's Agentic Index coverage score evidence, axis by axis, not from the totals. How this evidence is graded