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Magentic-One
Category: OSS Agent (Multi-Agent Orchestration)
Pricing: Free and open source. Requires your own OpenAI API key (GPT-4o recommended). You pay OpenAI's standard per-token rates for the model.
Official documentation: https://microsoft.github.io/autogen/stable/user-guide/agentchat-user-guide/magentic-one.html
GitHub: https://github.com/microsoft/autogen
What it is
Magentic-One is a generalist multi-agent system built on Microsoft's AutoGen framework. It solves open-ended web and file-based tasks across a variety of domains. The system orchestrates five specialized agents working together:
| Agent | Role |
|---|---|
| Orchestrator | Plans tasks, decomposes them into steps, tracks progress, and directs other agents |
| MultimodalWebSurfer | Controls a real Chromium browser to navigate, search, and read web pages |
| FileSurfer | Reads and navigates local files and directories |
| MagenticOneCoderAgent | Generates Python code to solve sub-tasks |
| ComputerTerminal | Executes code in a shell and installs packages |
Magentic-One achieves competitive performance on agentic benchmarks including GAIA, AssistantBench, and WebArena. It ships inside the autogen-ext package under autogen_ext.teams.magentic_one.
Safety notes
Magentic-One can browse the web, write code, and execute shell commands autonomously. Run it inside a Docker container or isolated virtual environment. Never give it access to sensitive credentials. The system is susceptible to prompt injection attacks from web pages it visits.
See the Test page for the recommended safe-run setup.