BYOAIK — Bring Your Own AI Key: a directory of AI tools that run on your own API key.

Best Open-Source ChatGPT Alternatives

Self-hostable chat UIs that run on your own provider keys.

• LibreChat — Open-source, self-hosted ChatGPT alternative unifying many AI providers with agents, MCP, and RAG.
• Open WebUI — Feature-rich, self-hosted web UI for LLMs with full bring-your-own-key support across OpenAI, Ollama, and any OpenAI-compatible provider.
• LobeChat — Polished open-source AI chat UI/PWA with 40+ provider support, plugins, and multi-modal features.
• NextChat — Light and fast, self-hostable AI chat UI where you bring your own provider keys.
• SillyTavern — Open-source self-hosted LLM frontend for power users and roleplay, BYOK to many backends.
• Hugging Face Chat UI — Open-source SvelteKit chat interface powering HuggingChat, self-hostable against any OpenAI-compatible endpoint with your own API key.
• Airi — Self-hosted, you-owned AI companion with a VRM/Live2D avatar and real-time voice chat.
• big-AGI — Multi-model AI workspace with Beam multi-model chat, personas, image and voice, on your own keys
• TypingMind — One-time-purchase power-user chat UI that wraps your own LLM provider keys.