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
Hex A | NotebookLM S | Perplexity S | Fireflies A | |
|---|---|---|---|---|
| Tagline | Modern data notebook with Magic AI assistant. | Google's research notebook. Turns your docs into a podcast. | AI search done right. Cited answers, not chat theater. | Sales-focused meeting AI with CRM integration. |
| Category | Data | Research | Research | Meetings |
| Pricing | Free + $28+/user/mo | Free | Free + $20/mo Pro | Free + $10-$19/user/mo |
| Best for | Data teams at startups + enterprises. | Students, researchers, anyone with a stack of PDFs or a topic to learn. | Replacing Google for any question where you want a cited answer in seconds. | Sales teams, customer success, anyone running many discovery calls. |
| Strengths |
|
|
|
|
| Weaknesses |
|
|
|
|
| Kai's verdict | A-tier for data teams. S-tier if you already live in SQL + Python. | S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs. | S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week. | A-tier for sales teams. B-tier for solo users. |
| Link | Open → | Open → | Open → | Open → |