AutoGPT is one of the earliest and most widely adopted autonomous AI agent projects, originally released in 2023. The 2025-2026 releases added a visual Agent Builder, a plugin ecosystem with 50+ official integrations, and cloud deployment options alongside the self-hosted version. It operates on a bring-your-own-key model, meaning users pay their LLM provider directly rather than a subscription fee. Key features: - Autonomous multi-step task execution without per-step human input - Web browsing and real-time information retrieval - Code writing and execution - File management and API interaction - Visual Agent Builder with 50+ plugins added in 2025-2026 - Self-hostable with BYOK LLM support (OpenAI, Anthropic, etc.)
Open-source, free to self-host (BYOK). Cloud Beta: free. Users pay their own LLM API costs separately.