AgentGPT
Free tierWeb-based autonomous AI agent that chains GPT tasks together to complete multi-step goals
Free tier available·All audiences·Powered by OpenAI·Open source
Key strengths
No-setup web interface for autonomous agentsOpen source and self-hostableChains tool use across web search, code, and APIsVisual task tree for transparencyFree tier with limited runs
Free tier + paid plans · from $20 USD/mo
US
Founded 2023
Self-hostable
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Open source on GitHub (Reworkd); uses GPT-3.5/GPT-4 with ReAct-style agent prompting. Task execution loop calls tools including web search (SerpAPI) and code execution. Self-hostable with Docker; requires OpenAI API key. Front-end in Next.js, backend in FastAPI.