LangChain
More focused on chaining language model calls and integrations, with extensive community support and ecosystem.
AgentGPT
Offers a no-code interface for building AI agents but with less flexibility compared to the SDK.
AutoGPT
An open-source autonomous agent framework emphasizing self-prompting but less modular than OpenAI Agents SDK.
Microsoft Semantic Kernel
Provides AI orchestration tools with strong integration into Microsoft Azure ecosystem, suitable for enterprise use.