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.Pick tools (4 selected)
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Windsurf A | GitHub Copilot B | Hex A | OpenAI Voice / Realtime S | |
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| Tagline | Codeium's agentic IDE. Cascade agent + strong free tier. | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | Modern data notebook with Magic AI assistant. | ChatGPT's voice + the Realtime API for developers. |
| Category | coding | coding | data | voice |
| Pricing | Free + $15/mo Pro | Free (limited) + $10/mo Pro + $19/mo Business | Free + $28+/user/mo | Voice included with ChatGPT Plus; Realtime API by usage |
| Best for | Developers who want Cursor-like power for less money. | Teams with GitHub already. Devs who don't want to change IDEs. | Data teams at startups + enterprises. | Voice chat users, developers building voice agents on OpenAI. |
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| Kai's verdict | A-tier. Close second to Cursor. If $5/mo matters, start here. | B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't. | A-tier for data teams. S-tier if you already live in SQL + Python. | S-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement. |
| Link | Open → | Open → | Open → | Open → |