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)
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Fathom S | Aider A | GitHub Copilot B | Claude Code S | |
|---|---|---|---|---|
| Tagline | Meeting notes, free forever for individuals. | Terminal-based AI pair programmer. Git-aware, model-flexible. | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | Anthropic's CLI agent. Opus-powered, operates on your repo directly. |
| Category | meeting | coding | coding | coding |
| Pricing | Free for individuals + $15-$29/user/mo teams | Free (open source) + whatever API you use | Free (limited) + $10/mo Pro + $19/mo Business | Part of Claude Pro/Max/Team plans |
| Best for | Solo operators, freelancers, small teams on a budget. | Developers who want open-source tooling with full control. | Teams with GitHub already. Devs who don't want to change IDEs. | Developers who want an agent, not autocomplete. Large refactors, tests, docs. |
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| Kai's verdict | S-tier for solo + free. The best free option, hands down. | A-tier. The right answer if you want open-source + terminal-native + model-agnostic. | B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't. | S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement. |
| Link | Open → | Open → | Open → | Open → |