BabyAGI is completely free with 5 features included. No paid tiers offered, making it perfect for budget-conscious users.
The original 2023 version was archived in September 2024. The current version (the functionz framework) is actively developed by Yohei Nakajima, though updates are sporadic. Check the GitHub repo for recent commits.
The creator explicitly says no. The README warns it is not meant for production use. It is a research and prototyping tool. For production agent systems, look at LangGraph, CrewAI, or commercial platforms.
AutoGPT is a larger, more feature-complete autonomous agent platform. BabyAGI is smaller and focused on one idea: agents that write their own functions. If you want a full agent system, use AutoGPT. If you want to study self-building agents specifically, BabyAGI is cleaner and easier to understand.
Any model supported by LiteLLM, including GPT-4, Claude, Gemini, Llama, and Mistral. You set your API key as an environment variable and specify the model name.
The framework itself is free. Your costs are LLM API calls, which vary by provider. A typical prototyping session with GPT-4 might cost $1-5 depending on complexity. Using local models through Ollama costs nothing beyond hardware.
It's completely free — no credit card required.
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Last verified March 2026