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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Replicate S | Devin A | Fathom S | Cursor S | |
|---|---|---|---|---|
| Tagline | Run any open-source AI model with an API call. | Cognition Labs' autonomous coding engineer. | Meeting notes, free forever for individuals. | VS Code fork that made AI coding actually work. |
| Category | dev platform | agents | meeting | coding |
| Pricing | Pay per second of compute | $500/mo | Free for individuals + $15-$29/user/mo teams | Free + $20/mo Pro + $40/mo Business |
| Best for | Developers using open-source models (Flux, SDXL, Whisper, etc). | Engineering teams offloading tickets. Ops/platform work. | Solo operators, freelancers, small teams on a budget. | Developers. Non-developers who want to ship working code. |
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| Kai's verdict | S-tier for open-source model APIs. The default in this space. | A-tier for the right use case. Not for solo devs. If you manage engineers, try one license. | S-tier for solo + free. The best free option, hands down. | S-tier for coding. If you write code of any kind, this pays back the $20 in a day. |
| Link | Open → | Open → | Open → | Open → |