Multi-agent framework for building LLM-powered collaborative AI workflows
AutoGen is an open-source multi-agent framework for developers building applications where multiple AI agents collaborate to complete tasks.
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AI Editor ApprovedApproved and published by our AI Editor-in-Chief after full panel analysis.AutoGen is an open-source multi-agent framework for developers building applications where multiple AI agents collaborate to complete tasks. Developers define agents that communicate with each other, use tools, and coordinate across steps to solve complex, multi-part problems, with conversation patterns that can be fully autonomous, human-in-the-loop, or a combination depending on required oversight. The framework is free under an MIT license, though compute costs from model APIs are billed separately. Key capabilities include the AgentChat framework, a Studio UI for prototyping, a Docker code executor for sandboxed evaluation, MCP tool integration, and a gRPC worker runtime for cross-language agents. TopReviewed's six-seat AI review panel scored it 7.1/10, praising the vendor-neutral MIT license and Microsoft Research backing while noting the project is explicitly in maintenance mode with new work directed to a successor framework. It suits developers learning multi-agent patterns or maintaining existing AutoGen workloads.
In practice, a developer using AutoGen defines agents as code — specifying each agent's role, the language model powering it, and the tools it can call. These agents then exchange messages in structured conversation loops, with each agent acting on the output of the previous one. A typical setup might include an assistant agent that generates code, a critic agent that reviews it, and an executor agent that runs it, all operating without manual intervention between steps.
AutoGen's highlighted capabilities include support for group chat patterns where multiple agents coordinate under an orchestrator, a built-in code execution environment, and compatibility with any OpenAI-compatible API endpoint — including local models. The framework also includes AutoGen Studio, a no-code interface for prototyping multi-agent workflows visually without writing Python directly. AgentChat, a higher-level API layered on top of the core, simplifies common patterns like two-agent debates or sequential task pipelines.
AutoGen targets software engineers, AI researchers, and teams building agentic applications in domains like data analysis, software development assistance, and task automation. The framework is open-source and free to use under an MIT license, with no paid tiers — compute costs depend entirely on the underlying model APIs a user connects.
AutoGen is a Python library installable via pip, with support for Linux, macOS, and Windows. It integrates with OpenAI, Azure OpenAI, Anthropic, Google Gemini, and locally hosted models via Ollama or similar. AutoGen Studio ships as a separate installable package with a browser-based UI. The project lives on GitHub, where the README now marks AutoGen as community managed and in maintenance mode, with new projects pointed to Microsoft Agent Framework; the last release, v0.7.5, shipped in September 2025.
Build conversational single and multi-agent applications with Python 3.10+.
Wraps OpenAI's Responses API as an AutoGen agent, with built-in tools such as file search, web search and image generation.
Coordinates deterministic and dynamic agentic workflows for complex business processes.
Distributes agents across multiple languages and systems via gRPC protocol.
Supports asynchronous execution patterns for non-blocking agent task processing.
Manages scalable multi-agent systems through event-driven architecture for distributed workflows.
Allows developers to build custom implementations interfacing with external services and libraries.
Web-based interface for prototyping agents without writing code.
Connects agents to Model-Context Protocol servers for expanded capability access.
Executes model-generated code in isolated Docker containers for safe evaluation.
Microsoft AutoGen is a fully open-source, MIT-licensed framework free for any developer or organization to use, modify, and distribute. Note: AutoGen is now in maintenance mode (community-managed, bug fixes only). New projects are directed to the successor Microsoft Agent Framework.
Microsoft's free multi-agent framework now in maintenance mode — successor already exists.
“AutoGen is MIT-licensed, free, and carries Microsoft Research credibility. The problem: it's now in maintenance mode, with new projects directed to a successor framework.”
The GitHub README says it plainly — AutoGen is in maintenance mode, no new features or enhancements, with Microsoft pointing new projects to their Agent Framework successor. That's not a vendor risk. That's an end-of-life signal. Building on it today is a deliberate choice to inherit tech debt.
The technical bones are solid. Docker Code Executor, gRPC Worker Runtime, MCP Tool Integration, and AgentChat's conversational API cover real enterprise needs. It beats LangGraph on approachability and CrewAI on Microsoft ecosystem fit. AutoGen Studio gives non-Python teams a path in, which matters for adoption speed.
Two things concern me. One: the last release, v0.7.5, shipped in September 2025, and there is no forward roadmap — you're flying without instrumentation. Two: the successor, Microsoft Agent Framework, reached 1.0 in April 2026 and keeps shipping, so every month on AutoGen widens the migration gap. Pilot AutoGen only if you're evaluating both side-by-side and have 90 days to form an opinion before committing architecture.
Peers using LangGraph or CrewAI are building on actively developed frameworks; AutoGen's maintenance status puts you at a growing disadvantage over 18 months.
MIT license, Microsoft Research provenance, and 0 vendor lock-in makes this a defensible board conversation — maintenance mode status is the only asterisk.
pip install, AutoGen Studio for no-code prototyping, and AgentChat's high-level API mean a developer can have a working workflow in hours, not weeks.
Multi-agent orchestration with gRPC Worker Runtime and async execution genuinely advances agentic capability, not just cost reduction.
Microsoft Research origin is credible, but the GitHub README explicitly states AutoGen is in maintenance mode — new projects are redirected to a successor framework.
Teams evaluating Microsoft's agentic ecosystem who need 90 days to assess AutoGen alongside its successor before committing.
You're starting a net-new agentic project with a 12-month production horizon — build on the successor framework instead.
Microsoft Research's multi-agent foundation is now in maintenance mode — build on the successor instead.
“AutoGen pioneered the agent conversation pattern and the architecture holds up. But the GitHub README confirms it's now maintenance-only, with new projects redirected to Microsoft's Agent Framework successor.”
The event-driven, gRPC-distributed runtime is genuinely well-architected. Docker code execution in isolated containers, async operations, and MCP tool integration show a team that thought through real production concerns — not just demos. Someone here understood distributed systems before they understood agents.
The tradeoff is architectural, not superficial: AutoGen is MIT-licensed and community-managed, which sounds like freedom until your team hits a blocking bug in year two with no Microsoft engineering behind it. LangGraph and CrewAI are actively maintained by funded teams. If you're starting a net-new agentic application today, you're building on a foundation Microsoft itself has walked away from.
For teams already running AutoGen in production, the MIT license and stable API mean no forced migration. For anyone evaluating now, the successor framework is the right conversation — AutoGen is reference architecture, not a 3-year bet.
AutoGen defined multi-agent conversation patterns but LangGraph and CrewAI now own the active-development segment of this market.
AgentChat plus group chat orchestration maps directly to how engineering teams structure multi-step agentic pipelines.
OpenAI, Azure OpenAI, Anthropic, Gemini, and Ollama compatibility plus MCP integration covers nearly every LLM stack in use today.
Maintenance mode is confirmed at the top of the GitHub README — community managed, no new features, no active Microsoft engineering roadmap.
gRPC worker runtime, event-driven core, and Docker code executor indicate library-grade systems thinking, not a wrapper project.
Teams auditing or extending existing AutoGen-based systems who need stable, MIT-licensed code they can fork and own.
You're starting a new agentic application and need a framework with an active engineering team behind it.
$0 license, but now in maintenance mode — real cost lives in your LLM API bills
“AutoGen is MIT-licensed, free forever, zero procurement friction. The catch: it's officially in maintenance mode, with Microsoft directing new projects to a successor framework.”
$0 license fee. No tiers, no SSO tax, no seat math. 50 engineers paying $0 × 50 = $0. Year 3 TCO is purely LLM API spend — OpenAI, Anthropic, Gemini, or self-hosted via Ollama. A team running GPT-4o at scale could easily hit $5K–$20K/year in API costs depending on call volume. That's the real budget line.
Maintenance mode is the procurement flag. Per the GitHub README, no new features or enhancements — new development has moved to Microsoft's successor Agent Framework. Buying into a maintenance-mode library has a migration cost. Call it 2–4 weeks of engineering time in year 2. Compare to LangGraph and CrewAI, which are actively developed. That delta matters for 3-year planning.
Contract flexibility is perfect — MIT license, self-host anywhere, no auto-renewal window, no termination clause to negotiate. Docker code executor and gRPC runtime are production-grade features. But the maintenance flag is real. Factor the migration sprint into TCO.
Zero procurement friction — pip install, no vendor onboarding, no invoice, no PO required.
MIT license, no vendor contract, no auto-renewal, no termination clause — maximum flexibility by definition.
$0, MIT-licensed, fully public — no pricing page needed because there is no pricing.
ROI depends entirely on LLM API costs and engineering productivity gains — no built-in usage analytics to measure either.
Framework is free, but LLM API costs are unbounded and a migration to the successor framework adds engineering cost in year 2-3.
Developers who need a proven multi-agent framework today and can absorb a future migration to Microsoft's successor.
Teams building a 3-year production system who can't budget for a mid-cycle framework migration.
Powerful multi-agent primitives, but maintenance-mode status changes the calculus
“AutoGen's event-driven runtime and Docker code execution are genuinely solid engineering. The maintenance-mode notice atop the GitHub README is a real signal — new projects are being redirected to the successor Microsoft Agent Framework.”
AgentChat plus the Core event-driven runtime is a capable stack. Async agent operations, gRPC worker runtime for cross-process distribution, MCP tool integration — these aren't demo features. Docker code executor isolating model-generated code is the right call for anything running in prod. The architecture shows someone actually thought about what happens when an agent writes a for-loop that shouldn't run unchecked.
The maintenance-mode notice atop the GitHub README is the thing you can't ignore. Bug fixes only, community-managed. LangGraph and CrewAI are actively shipping. If you're greenfielding an agentic system today, you're either betting on the successor framework or picking a competitor with active development velocity. That's not a small tradeoff.
AutoGen Studio gives non-Python prototyping, which is useful for convincing stakeholders without wiring up a full agent graph. But power users will live in the Python API — and the docs won't grow to cover new patterns. The GitHub release notes are public; they stop at v0.7.5 from September 2025.
Maintenance mode leaves bug fixes to community contributors, with no release since September 2025 — daily friction will grow, not shrink, over time.
User guides for AgentChat, Core and Extensions plus a full API reference are there, but release notes stop at v0.7.5 (September 2025) — nothing new is coming to them.
gRPC worker runtime and async operations are solid, but with no release since September 2025, a bug you hit may simply stay open.
Core event-driven architecture, cross-language interoperability via .NET, and the extensions ecosystem give real depth for engineers willing to go past AgentChat.
pip-installable, OpenAI-compatible API support, and Python 3.10+ fit naturally into standard ML engineering workflows.
Engineers evaluating multi-agent patterns for research or existing projects already built on AutoGen.
You're greenfielding a production agentic system and need an actively maintained framework behind it.
Powerful multi-agent framework, but it's now in maintenance mode — plan accordingly.
“AutoGen is genuinely capable infrastructure for building multi-agent AI workflows, pioneered in Microsoft Research, with a real extension ecosystem. It's in maintenance mode now, which changes the calculus for new projects.”
MIT-licensed, free, and pioneered in Microsoft Research — AutoGen's starting position is strong. The feature list is serious: Docker code execution, gRPC distributed runtimes, async operations, MCP tool integration, and AgentChat for simpler pipeline patterns. That's not a toy. For a developer who needs agents that can generate code, critique it, and run it without hand-holding, this does the job.
The catch is right at the top of the GitHub README: AutoGen is in maintenance mode. Bug fixes only, community-managed, and new projects are pointed toward Microsoft's successor framework. Compare that to LangGraph or CrewAI, which are actively shipping. Starting a production build on a framework in maintenance is a real risk, not a hypothetical one.
AutoGen Studio softens the learning curve, but this is still a Python-first, docs-heavy tool. The mobile story is basically nothing — it's a dev framework, not a product. Onboarding is homework, not a welcome mat. Experienced engineers will move fast. Everyone else will spend a long weekend with the docs.
Studio UI exists but the last release was v0.7.5 in September 2025 — rough edges aren't getting filed down in maintenance mode.
AgentChat and Studio help early, but multi-agent orchestration patterns and gRPC distribution configs are genuinely steep; maintenance mode means less community momentum to lean on.
This is a Python developer framework — mobile parity is not a concept that applies, and Studio UI in a mobile browser isn't a real workflow.
AgentChat API and Studio UI lower the floor, but Python 3.10+ requirement and agent-as-code setup means day one is documentation-heavy for most users.
Docker code executor and event-driven async architecture suggest the team thought about failure modes; gRPC worker runtime adds real distributed robustness.
Developers who need a proven, free multi-agent framework and can tolerate building on a maintained-but-not-evolving foundation.
You're starting a new production project and need a framework that's actively shipping features and improvements.
Microsoft Research pedigree, but it's in maintenance mode — that's the whole story.
“AutoGen is technically solid, MIT-licensed, and free forever. It's also explicitly being wound down in favor of a successor framework. That's not a minor footnote.”
Three tells on arrival. One: the GitHub README opens with a 'Maintenance Mode' warning — no new features or enhancements, community managed from here on. Two: the last release, v0.7.5, shipped in September 2025, and the blog's last post is from January 2025. Three: Microsoft is redirecting new projects to a different framework entirely. That's not a pivot. That's a sunset.
The technical foundation is real. Docker code execution, gRPC worker runtime, MCP tool integration, AgentChat API — these aren't vaporware. Microsoft Research built something genuinely capable. MIT license means zero lock-in and clean exit portability. If you leave, you take your code. LangGraph and CrewAI are the live comparisons here — both are actively shipping.
The honest tradeoff: AutoGen may be the best-documented dead-end in the category. Great for learning multi-agent patterns. Risky as a production dependency when the maintainer is pointing you toward the exit.
gRPC cross-language runtime and Studio UI were differentiators; LangGraph and CrewAI have closed the gap while actively shipping.
MIT license, pip-installable, self-hostable, no vendor data dependency — one of the cleanest exit stories in the category.
Explicitly in maintenance mode per the GitHub README — no new features, new projects redirected to successor framework.
Maintenance mode leads the GitHub README, but the documentation site at microsoft.github.io/autogen carries no such banner — honest at the source, quiet on the docs.
Microsoft Research origin matches the 'serious framework that outlived its internal priority' pattern — not a startup failure, but not a growth story either.
Developers learning multi-agent patterns or running existing AutoGen workloads who aren't starting net-new production systems.
You're building a production agentic system that needs active maintenance, new integrations, or a vendor that's investing forward.
Common questions answered by our AI research team
No. AutoGen is in maintenance mode: it gets no new features, is community managed, and accepts only bug fixes, security patches and documentation fixes. Microsoft points new projects to Microsoft Agent Framework and publishes a migration guide.
Yes. AutoGen's code is released under the MIT License and its documentation under CC-BY-4.0, so there is no license fee. You pay only the model provider you connect, such as the OpenAI API key the quickstart samples require.
Yes. Agents can run autonomously or with a human in the loop: add a UserProxyAgent to a team to give feedback during a run, or pass feedback as input to the next run() call. A mid-run UserProxyAgent pauses the team until the user replies.
AutoGen ships model clients for OpenAI, Azure OpenAI and Azure AI Foundry, plus experimental clients for Anthropic, Ollama, Gemini and Meta's Llama API. A Semantic Kernel adapter connects further providers.
No. AutoGen Studio is a research prototype for rapid prototyping, not a production-ready app, and it does not implement jailbreak testing or permission-scoped data access. Production apps should be built on the AutoGen framework with their own authentication and security.
Who AutoGen competes with, and how each one differs
Competes directly across Workspace vs Microsoft 365, Gemini vs Copilot, and Google Cloud vs Azure, with a more consumer/web-native product philosophy versus Microsoft's enterprise-IT-centric bundling.
Primary rival to Azure in cloud infrastructure and to Azure OpenAI Service via Bedrock's multi-model hosting approach, with usage-based pricing and a broader third-party model marketplace rather than deep Office/productivity integration.
Competes with Azure OpenAI Service and Copilot at the model/API layer; Anthropic sells direct API and Claude access rather than bundling AI into an enterprise productivity suite, targeting developers building on Claude specifically.
Overlaps with Power Automate and Copilot Studio in enterprise workflow automation and AI agents, but is a standalone workflow/ITSM platform rather than tied to an OS or productivity suite ecosystem.
Direct competitor to Microsoft Teams in video conferencing and workplace communication, sold as a focused communications product rather than part of a broader office suite.
Competes with Microsoft Dragon Copilot in AI medical scribing, focusing narrowly on clinical documentation for health systems rather than Microsoft's broader healthcare cloud and productivity stack.
Microsoft is a Redmond, Washington-based technology company that develops software, cloud services, hardware, and AI products including Windows, Microsoft 365, and Azure.
