Builder.io launches Fusion 1.0: an AI agent that unites product, design, and code
Builder.io announced Fusion 1.0 - an AI agent that connects product requirements, design decisions, and production code in a single workflow. Instead of three teams starting fresh in three tools, Fusion lets everyone collaborate on the actual product as it's being built.
The pitch is simple: keep your existing stack, cut handoffs, and let code become the common language across PMs, designers, and engineers.
Why this matters for product development
- Fewer handoffs and less rework. Ideas move straight from conversation to implementation.
- One continuous thread from PRD to pull request. Context travels with the work.
- Faster reviews. Designers and engineers meet in the same artifact - production code.
How Fusion 1.0 works
- Plug into your stack: Slack, Jira, Figma, and GitHub. Tag @Builder.io in Slack to turn a chat into a feature request, or assign a Jira ticket to kick off a branch and initial implementation.
- Designers work in a visual canvas that writes real code using your existing components and design tokens.
- Developers review PRs while the bot updates code intelligently based on feedback.
- A context engine understands your APIs, data sources, and design system to produce production-ready code from day one.
- It learns your team's patterns over time and improves with every commit.
Fusion integrates with the tools you already use, including Figma and GitHub, so teams can move from idea to deployment without switching context.
Proof at scale
According to Builder.io, Fusion has already converted over 10 million designs and PRDs into production features at large enterprises.
"Most AI tools today make individual contributors faster but leave teams disconnected," said Steve Sewell, CEO of Builder.io. "Fusion 1.0 is different - it lets PMs, designers, and engineers build together in one environment where code is the common language."
"We've done this live in team meetings - people throw out an idea, and we just build it in front of them. What used to take months now happens instantly. Once leadership saw that, they said, 'We need this everywhere,'" said a UX Design Lead at a global enterprise services company.
Fit with your stack and controls
- Works with React, component-driven JS frameworks, and custom internal architectures.
- MCP server support for databases, APIs, and deployment tools like Supabase, Netlify, and Zapier.
- Granular permissions and role-based access control.
- Model flexibility: OpenAI, Anthropic, and Google.
- Keeps your repo as the source of truth - Fusion opens and updates PRs, you approve.
What product teams can do today
- Convert Slack discussions into tracked, implementable work.
- Turn Jira tickets into branches and working features with your components and tokens.
- Run live design-build reviews where feedback becomes code updates in real time.
- Standardize on your design system while shipping faster across squads.
Availability
Fusion 1.0 is available now for Builder.io customers. Connect your repository, assign your first ticket, and watch the workflow come together.
Get started: builder.io/fusion
About Builder.io
Builder.io is a visual development platform that helps teams design, build, and ship faster without sacrificing production quality. Builder products power digital experiences for some of the world's largest companies, turning designs and ideas into production-ready code.
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