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 | Windsurf A | ChatGPT Operator B | Hugging Face S | |
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| Tagline | Meeting notes, free forever for individuals. | Codeium's agentic IDE. Cascade agent + strong free tier. | OpenAI's browser agent. Clicks and types on websites for you. | The GitHub of AI. Models, datasets, spaces — all in one. |
| Category | Meetings | Coding | Agents | Dev Platform |
| Pricing | Free for individuals + $15-$29/user/mo teams | Free + $15/mo Pro | Included with ChatGPT Pro $200/mo | Free + $9-$20/mo + enterprise |
| Best for | Solo operators, freelancers, small teams on a budget. | Developers who want Cursor-like power for less money. | Power users willing to pay $200/mo for a browser bot. | Any ML/AI developer. Hobbyists exploring open models. |
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| Kai's verdict | S-tier for solo + free. The best free option, hands down. | A-tier. Close second to Cursor. If $5/mo matters, start here. | B-tier. Still early. Manus is more flexible for less money. | S-tier infrastructure. The one platform every AI dev eventually uses. |
| Link | Open → | Open → | Open → | Open → |