autogen/dotnet/website/articles/Group-chat-overview.md
@AutoGen.Core.IGroupChat is a fundamental feature in AutoGen. It provides a way to organize multiple agents under the same context and work together to resolve a given task.  In AutoGen, there are two types of group chat: - @AutoGen.Core.RoundRobinGroupChat : This group chat runs agents in a round-robin sequence. The chat history plus the most recent reply from the previous agent will be passed to the next agent. - @AutoGen.Core.GroupChat : This group chat provides a more dynamic yet controlable way to determine the next speaker agent. You can either use a llm agent as group admin, or use a @AutoGen.Core.Graph, which is introduced by [this PR](https://github.com/microsoft/autogen/pull/1761), or both to determine the next speaker agent.  > [!NOTE] > In @AutoGen.Core.GroupChat, when only the group admin is used to determine the next speaker agent, it's recommented to use a more powerful llm model, such as `gpt-4` to ensure the best experience.