Comparisons / AutoGen vs AutoGPT
AutoGen vs AutoGPT: Which Agent Framework to Use?
AutoGen by Microsoft models agents as ConversableAgents that chat with each other. AutoGPT was one of the first autonomous agent projects, spawning 165k+ GitHub stars. Here is how they compare — paradigm, ecosystem, and the use cases each one is actually built for.
By the numbers
AutoGen
56.7k
8.5k
Python
CC-BY-4.0
2023-08-18
Microsoft Research
AutoGPT
183.1k
46.2k
Python
MIT
2023-03-16
Toran Bruce Richards
GitHub stats as of April 2026. Stars indicate community interest, not necessarily quality or fit for your use case.
| Concept | AutoGen | AutoGPT |
|---|---|---|
| Agent | `ConversableAgent` with `system_message`, `llm_config` | AutoGPT `Agent` class with goal decomposition and self-prompting loop |
| Tools | `register_for_llm()` and `register_for_execution()` | Plugin system with web browsing, file I/O, code execution, Google search |
| Conversation | Two-agent chat with `initiate_chat()`, message history | — |
| Multi-Agent | `GroupChat` with `GroupChatManager`, speaker selection | — |
| Nested Chats | `register_nested_chats()` for sub-task handling | — |
| Termination | `is_termination_msg` callback, `max_consecutive_auto_reply` | — |
| Agent Loop | — | Autonomous loop: think → plan → act → observe → repeat until goal met |
| Memory | — | Vector DB (Pinecone/local) for long-term memory, message history for short-term |
| Planning | — | GPT-4 generates multi-step plans, stores in task queue, revises on failure |
| Self-Critique | — | Built-in self-evaluation prompt that critiques each action before executing |
AutoGen vs AutoGPT, head to head
AutoGen AutoGen by Microsoft models agents as ConversableAgents that chat with each other.
AutoGPT AutoGPT was one of the first autonomous agent projects, spawning 165k+ GitHub stars.
Both wrap the same underlying agent pattern — an LLM call, a tool dispatch, a loop — in different abstractions. The choice between them is mostly about which mental model and ecosystem fits the team you have, not which one is technically more capable.
Pick AutoGen if
Pick AutoGen if autoGen excels at complex multi-agent workflows where agents need to debate or collaborate. For single-agent use cases or simple tool-calling agents, the plain Python version is significantly simpler. AutoGen is the right fit when the tradeoffs in its intro line up with how your team actually wants to work day-to-day; AutoGPT would force you to translate.
Pick AutoGPT if
Pick AutoGPT if autoGPT pioneered the autonomous agent pattern, but most of its complexity comes from managing an unbounded loop — not from the core agent logic. For bounded tasks, a plain while loop with tool dispatch gives you the same capability with full control over when to stop. AutoGPT is the right fit when the tradeoffs in its intro line up with how your team actually wants to work day-to-day; AutoGen would force you to translate.
What both add
Both AutoGen and AutoGPT pull in a class hierarchy and a dependency tree to wrap what is, at the core, an HTTP POST in a while loop. If your use case is straightforward — one provider, a handful of tools, a single agent — the framework cost may exceed the framework benefit. The lesson below shows the same pattern in ~60 lines without either dependency.
Or build your own in 60 lines
Both AutoGen and AutoGPT implement the same 8 patterns. An agent is a function. Tools are a dict. The loop is a while loop. The whole thing composes in ~60 lines of Python.
No framework. No dependencies. No opinions. Just the code.
Build it from scratch →