Ollama is an open-source tool that makes running large language models locally on personal computers effortlessly simple. With a single command, users can download and run Llama 3, Mistral, Gemma, Phi, and hundreds of other open-source models entirely on their own hardware — with no cloud dependency, no API costs, and complete data privacy. Developers, privacy-conscious users, and AI researchers use Ollama to experiment with frontier open-source models, build local AI-powered applications, and develop AI systems that work offline without sending any data to external servers.