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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Elicit S | GitHub Copilot B | OpenAI Voice / Realtime S | Fathom S | |
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| Tagline | AI research assistant for academic literature. | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | ChatGPT's voice + the Realtime API for developers. | Meeting notes, free forever for individuals. |
| Category | Research | Coding | Voice | Meetings |
| Pricing | Free + $12-$42/mo | Free (limited) + $10/mo Pro + $19/mo Business | Voice included with ChatGPT Plus; Realtime API by usage | Free for individuals + $15-$29/user/mo teams |
| Best for | Grad students, researchers, anyone doing literature reviews. | Teams with GitHub already. Devs who don't want to change IDEs. | Voice chat users, developers building voice agents on OpenAI. | Solo operators, freelancers, small teams on a budget. |
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| Kai's verdict | S-tier for academic research. Nothing else comes close for systematic reviews. | B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't. | S-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement. | S-tier for solo + free. The best free option, hands down. |
| Link | Open → | Open → | Open → | Open → |