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.
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Fathom S | Perplexity S | GitHub Copilot B | Synthesia A | |
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| Tagline | Meeting notes, free forever for individuals. | AI search done right. Cited answers, not chat theater. | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | Enterprise AI avatar video for training + comms. |
| Category | Meetings | Research | Coding | Video |
| Pricing | Free for individuals + $15-$29/user/mo teams | Free + $20/mo Pro | Free (limited) + $10/mo Pro + $19/mo Business | $22-$89/mo + enterprise |
| Best for | Solo operators, freelancers, small teams on a budget. | Replacing Google for any question where you want a cited answer in seconds. | Teams with GitHub already. Devs who don't want to change IDEs. | Enterprise L&D, corporate training, internal comms. |
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| Kai's verdict | S-tier for solo + free. The best free option, hands down. | S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week. | B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't. | A-tier. HeyGen wins for creators, Synthesia wins for enterprise. |
| Link | Open → | Open → | Open → | Open → |