LangGraph vs Semantic Kernel

LangGraph and Semantic Kernel are both agent frameworks for Python. LangGraph is published by LangChain and Semantic Kernel by Microsoft. On GitHub, LangGraph has 43,823 stars and Semantic Kernel has 28,694. Both were last active in Oct 2026. The table lines up where they differ (publisher, weekly downloads, category and languages) and has the install commands for both. Everything here comes from the listings' public sources and is refreshed daily. LangGraph describes itself as: Low-level Python orchestration framework for long-running stateful agents, with durable execution, human review points and short- and long-term memory. Semantic Kernel: Model-agnostic SDK for building agents and multi-agent systems in Python, .NET and Java; Microsoft names Agent Framework as its successor. Licenses: LangGraph MIT, Semantic Kernel MIT.