For those concerned about their data privacy, it is possible to install artificial intelligence (AI) locally, preventing the sending of information to external servers. A notable option is Jan, an open-source tool that serves as an alternative to ChatGPT and operates 100% offline. Specifically, the model Jan V1, based on the Qwen3-4B-thinking model, has a compact size of only 2.1 GB, which is surprising for its efficient performance on devices with limited resources.
Jan allows the execution of local language models (LLMs) such as Llama, Gemma, Mistral, or Qwen, directly on your computer or mobile device, ensuring that your data doesn’t leave your machine. Additionally, it offers the capability to connect to remote APIs such as Groq or OpenRouter if you require additional functionalities, always maintaining control over your information.