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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OpenAI Voice / Realtime S | Granola S | GitHub Copilot B | Fathom S | |
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| Tagline | ChatGPT's voice + the Realtime API for developers. | Meeting notes that don't suck. Runs locally, no bot joins. | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | Meeting notes, free forever for individuals. |
| Category | Voice | Meetings | Coding | Meetings |
| Pricing | Voice included with ChatGPT Plus; Realtime API by usage | Free + $18/mo | Free (limited) + $10/mo Pro + $19/mo Business | Free for individuals + $15-$29/user/mo teams |
| Best for | Voice chat users, developers building voice agents on OpenAI. | Founders, execs, consultants who live in calls. | Teams with GitHub already. Devs who don't want to change IDEs. | Solo operators, freelancers, small teams on a budget. |
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| Kai's verdict | S-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement. | S-tier. Category-defining UX. If you take notes in meetings, switch this week. | B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't. | S-tier for solo + free. The best free option, hands down. |
| Link | Open → | Open → | Open → | Open → |