Compare AI tools
Side-by-side: what they do, what they cost, what Kai actually thinks. Pass up to 4 tools via ?tools=claude,chatgpt,gemini.
Pick tools (4 selected)
Coding
Image
Productivity
Writing
Marketing
Cursor S | Lex A | Hugging Face S | NotebookLM S | |
|---|---|---|---|---|
| Tagline | VS Code fork that made AI coding actually work. | Google Docs with an AI collaborator baked in. | The GitHub of AI. Models, datasets, spaces — all in one. | Google's research notebook. Turns your docs into a podcast. |
| Category | Coding | Writing | Dev Platform | Research |
| Pricing | Free + $20/mo Pro + $40/mo Business | Free + $12/mo | Free + $9-$20/mo + enterprise | Free |
| Best for | Developers. Non-developers who want to ship working code. | Essays, long-form drafts, thinking on the page. | Any ML/AI developer. Hobbyists exploring open models. | Students, researchers, anyone with a stack of PDFs or a topic to learn. |
| Strengths |
|
|
|
|
| Weaknesses |
|
|
|
|
| Kai's verdict | S-tier for coding. If you write code of any kind, this pays back the $20 in a day. | A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form. | S-tier infrastructure. The one platform every AI dev eventually uses. | S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs. |
| Link | Open → | Open → | Open → | Open → |