
NotebookLM is Google's AI research tool: upload PDFs, docs, slides, or YouTube videos, and it creates a knowledge base you can chat with. The standout feature is the AI podcast — it generates a realistic two-host audio discussion of your source material. Free to use with a Google account.
Socratic sits in the Education category and is rated 4.4/5.0 by our community — one of the most reviewed tools in its space. It offers a free tier so you can try before you buy.
| Plan | Price | What's Included |
|---|---|---|
| Free | $0 | Basic access with usage limits |
| ProMost Popular | Free | Full access, higher limits and priority support |