Microsoft Agent Framework vs OGX (formerly Llama Stack)

Microsoft Agent Framework and OGX (formerly Llama Stack) are both agent frameworks. Microsoft Agent Framework is published by Microsoft and OGX (formerly Llama Stack) by OGX. On GitHub, Microsoft Agent Framework has 14,302 stars and OGX (formerly Llama Stack) has 8,444. Both were last active in Oct 2026. The table lines up where they differ (publisher, GitHub stars, weekly downloads and category) and has the install commands for both. Everything here comes from the listings' public sources and is refreshed daily. Microsoft Agent Framework describes itself as: Open framework for building and hosting production-grade AI agents and multi-agent workflows in .NET and Python. OGX (formerly Llama Stack): OpenAI-compatible agentic API server for inference, vector stores, files and skills, on any model or infrastructure. Licenses: Microsoft Agent Framework MIT, OGX (formerly Llama Stack) MIT.