HuggingChat

HuggingChat is Hugging Face's free, open-source alternative to ChatGPT that runs the best open-weight models including Llama 3, Mixtral, Command R+, and Falcon. As the AI community's largest model hub, Hugging Face uses HuggingChat as a showcase for what open-source models can do, and the results are impressive.

You can switch between models instantly to compare their strengths — Llama 3 for general conversation, Mixtral for speed, Command R+ for longer context tasks. The web search feature pulls in real-time information with source links, closing the gap with proprietary alternatives.

Custom assistants let you create specialized bots with system prompts and share them with the community, similar to GPT Store but entirely open. What truly sets HuggingChat apart is its commitment to transparency — the code is open-source on GitHub, you can see exactly which model version you are using, and conversation data is not used for training unless you opt in.

For developers, it serves as a free testing ground for models before deploying them via the Hugging Face Inference API. The interface is clean and functional, though it lacks some polish compared to ChatGPT. It is the best option for users who care about open-source principles and want frontier-level AI without vendor lock-in or subscriptions.