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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Devin A | Fireflies A | Perplexity S | Fathom S | |
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| Tagline | Cognition Labs' autonomous coding engineer. | Sales-focused meeting AI with CRM integration. | AI search done right. Cited answers, not chat theater. | Meeting notes, free forever for individuals. |
| Category | Agents | Meetings | Research | Meetings |
| Pricing | $500/mo | Free + $10-$19/user/mo | Free + $20/mo Pro | Free for individuals + $15-$29/user/mo teams |
| Best for | Engineering teams offloading tickets. Ops/platform work. | Sales teams, customer success, anyone running many discovery calls. | Replacing Google for any question where you want a cited answer in seconds. | Solo operators, freelancers, small teams on a budget. |
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| Kai's verdict | A-tier for the right use case. Not for solo devs. If you manage engineers, try one license. | A-tier for sales teams. B-tier for solo users. | S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week. | S-tier for solo + free. The best free option, hands down. |
| Link | Open → | Open → | Open → | Open → |