Bolt

Bolt (bolt.new) is an AI-powered web development platform from StackBlitz that sits at the intersection of low-code builders and modern "vibe coding" environments. It allows users to create websites, applications, and prototypes through a conversational chat interface, generating code, styling, and infrastructure automatically. Positioned as a professional-grade builder rather than a toy, it integrates frontier coding agents directly into a unified visual workspace where users can plan, build, preview, and publish without switching between multiple tools or configuring local development environments.

Unlike simple static site generators, Bolt provides a full-stack environment out of the box. It includes Bolt Cloud, which offers enterprise-grade backend infrastructure such as unlimited databases, user authentication, and web hosting with custom domains and analytics. It also supports importing existing design systems and components—from popular open-source libraries like Material UI, Shadcn UI, and Chakra UI to bespoke organizational design systems—allowing teams to build on-brand production interfaces rather than starting from scratch every time.

The platform is explicitly designed for a wide range of users, including product managers, entrepreneurs, marketers, agencies, and students. By abstracting away environment setup, dependency management, and deployment pipelines, Bolt aims to compress the timeline from idea to live product from months to days. Its tight integration of frontend generation with backend services and design-system fidelity distinguishes it from simpler AI site builders that only export static HTML. However, it operates on a token-based consumption model, meaning usage scales with project complexity and interaction frequency, which introduces a variable cost structure even on paid tiers.

Users interact with Bolt primarily through a chat interface where they describe the app, website, or component they want to build. The AI agent interprets the prompt, generates the project structure, writes code, and sets up the necessary files. Users can see the results in an integrated preview pane, inspect terminal output, and review logs—all within the same browser-based window. If the output is incorrect, Bolt can automatically test, refactor, and iterate on the code based on follow-up instructions.

The platform supports importing projects from Figma or GitHub, and users can load design systems—such as Porsche, Chakra UI, or a private company design system—to ensure generated components match brand guidelines and token libraries. For backend needs, Bolt Cloud provisions databases and authentication directly within the interface, removing the need to sign up for separate infrastructure accounts or manage connection strings. Publishing is handled natively with options for custom domains, SEO meta-tag optimization, and analytics tracking.

Token consumption is central to the workflow. Every message syncs the project's file system to the AI, and larger projects consume more tokens per interaction. Free users are capped at 300,000 tokens daily and 1 million monthly, while paid plans remove daily limits and offer larger monthly pools starting at 10 million on Pro. Paid subscribers also benefit from token rollover for one additional month, though an active subscription is required to access rolled-over balances, making project size a direct factor in ongoing cost.