Open-Source AI Tool Adds Spark 2.5 for Private, Free Use

A popular free tool called llama.cpp just got a new version that supports Spark 2.5, a recent artificial intelligence model. You may not have heard of llama.cpp, but it's what many people use to run AI programs directly on their own devices — laptops, desktops, and even phones. Rather than sending your questions to a company's servers over the internet, everything happens locally. This update expands the list of models you can run this way, now including Spark 2.5.

Why should you care? When AI runs on your own device, your conversations and data never leave your computer. That's a big privacy win. It also means you don't need to pay for a monthly AI subscription or rely on a stable internet connection. You get many of the benefits of a chatbot — answering questions, helping with writing, analysing text — but in a self-contained, offline package.

The update also includes pre-built versions for Mac (including Apple's newest chips), Windows, Linux, and Android. That means downloading and installing is straightforward for most people. The catch is that running AI on your own hardware requires a reasonably powerful computer, especially with larger models. Smaller phones or old laptops may struggle. Still, for anyone concerned about privacy or wanting to avoid subscription fees, this release makes cutting-edge AI more accessible and personal than ever.