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Montage
Runtime framework for agentic user interfaces
Montage
Founded in 2025
Freemium
Development
Access Montage
Open source and free; hosted services starting at $25/month for production.
framework
AI-agents
UX
developer-tools
open-source
What is Montage?
Montage is an open-source framework that solves the problem of static interfaces in a world of dynamic agents. With Montage, you create UIs that adapt in real time to the state of your AI agents — showing progress, collecting approvals, displaying partial results, and adjusting the flow based on agent decisions.
How it works
Montage defines a communication protocol between AI agents and web interfaces. Your agent sends state updates via Montage, and the UI reacts automatically: displaying spinners during processing, showing partial results as they arrive, asking for confirmation when necessary, and updating the layout based on the agent's context.
Key features
- Reactive Runtime: Interfaces that react in real time to the state of agents.
- Approval Protocol: Native flow for agents to request human confirmation.
- Result Streaming: Displays agent outputs as they arrive, without waiting for the final result.
- Agentic Components: Library of ready-to-use components for common AI patterns.
- Open Source: MIT license with an active community.
Who is it for
- Developers building products with AI agents as the core.
- Product teams wanting sophisticated UX for AI interactions.
- AI startups that need scalable UI infrastructure.
Pricing
| Plan | Who is it for |
|---|---|
| Open Source (Free) | Self-host without limitations |
| Cloud ($25/month) | Managed hosting with analytics and support |
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