ASTRA AI is the most advanced AI tutor that harnesses the power of artificial intelligence and runs on the most advanced language model, GPT-4. It is available to anyone who wants help learning math and is much cheaper than traditional tutoring. Astra AI was designed to provide a user experience very similar to tutoring, with answers tailored to your level of knowledge.

Astra.si is intended for pupils, high school students, university students, and anyone who wants to acquire, upgrade, or refresh their math skills. It offers more than 2,500 videos of lessons, which are completely free.

You can try it out here.

In 2025, Astra AI won the title of Slovenian Start:up of the Year!