Microsoft Agent Framework vs LangChain: AI Agent Platforms Compared (2025)
Compare Microsoft Agent Framework and LangChain in 2025 — including AI orchestration, integrations, model support, and enterprise readiness.
Trusted by Thousands
Both platforms serve millions of users worldwide
Powerful Features
Advanced capabilities and integrations
Flexible Pricing
Plans to fit every budget and business size
Features Comparison
| Feature | Microsoft Agent Framework | LangChain |
|---|---|---|
| Core Framework | Open-source SDK for .NET and Python (unifies Semantic Kernel + AutoGen) | LangChain Framework (Python, JavaScript/TypeScript SDKs) |
| AI Model Support | Azure OpenAI, model provider agnostic via Microsoft.Extensions.AI | OpenAI GPT-4, Claude, Gemini, Mistral, Ollama, and 100+ LLM providers |
| Integrations | Azure AI Foundry, Microsoft 365, Copilot Studio, Teams, Power Platform | Model/vector-store agnostic, LangServe, third-party APIs (700+ integrations) |
| Deployment | Azure AI Foundry managed or self-hosted | Self-hosted, cloud-agnostic, LangGraph Cloud (managed platform) |
| Agent Orchestration | Graph-based orchestration, multi-agent workflows, thread-based memory | LangGraph for stateful agents, LangServe deployment, LCEL runtime |
| Observability | OpenTelemetry via Azure AI Foundry | LangSmith tracing, debugging, monitoring suite |
Pricing Comparison
| Feature | Microsoft Agent Framework | LangChain |
|---|---|---|
| Framework / SDK | Free (MIT License, open-source) | Free (MIT License, open-source) |
| Developer Tier | Free Azure sandbox & GitHub integration | LangSmith Developer: Free (5k traces/month) |
| Team Tier | Pay-as-you-go Azure AI services | LangSmith Plus $39/seat/month (+ LangGraph Cloud) |
| Enterprise | Included in Azure AI & Copilot Enterprise plans | Custom pricing (self-host or hybrid) |
Pros & Advantages
| Feature | Microsoft Agent Framework | LangChain |
|---|---|---|
| Deep Azure ecosystem integration | ✓ | ✗ |
| Largest LLM framework community | ✗ | ✓ |
| Multi-language support (.NET + Python) | ✓ | ✓ |
| Enterprise governance & security | ✓ | ✗ |
Cons & Limitations
| Feature | Microsoft Agent Framework | LangChain |
|---|---|---|
| Still in Public Preview (Oct 2025) | ✓ | ✗ |
| Smaller community and fewer integrations | ✓ | ✗ |
| Requires Azure ecosystem for best experience | ✓ | ✗ |
The Bottom Line
Microsoft Agent Framework (unifying Semantic Kernel and AutoGen) is an open-source SDK for building multi-agent systems with .NET and Python, now in public preview. LangChain remains the open-source leader for LLM orchestration with flexible tools, model adapters, and large developer community. Choose Microsoft Agent Framework for Azure-integrated enterprise deployment, and LangChain for open-source flexibility and broad ecosystem support.
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