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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Stable Audio A | Fathom S | ChatGPT Operator B | Rows A | |
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| Tagline | Stability AI's open audio model. Loops + SFX + background. | Meeting notes, free forever for individuals. | OpenAI's browser agent. Clicks and types on websites for you. | Spreadsheets with AI + live integrations baked in. |
| Category | Audio | Meetings | Agents | Data |
| Pricing | Free + $12/mo Pro + enterprise | Free for individuals + $15-$29/user/mo teams | Included with ChatGPT Pro $200/mo | Free + $19-$89/user/mo |
| Best for | Game developers, podcasters needing SFX, video creators needing background music. | Solo operators, freelancers, small teams on a budget. | Power users willing to pay $200/mo for a browser bot. | Ops teams, marketers, anyone building dashboards from multiple sources. |
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| Kai's verdict | A-tier for its niche. Different use case than Suno — SFX and loops, not songs. | S-tier for solo + free. The best free option, hands down. | B-tier. Still early. Manus is more flexible for less money. | A-tier. The most interesting spreadsheet in years. Great for ops dashboards. |
| Link | Open → | Open → | Open → | Open → |