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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Coding
Image
Productivity
Writing
Marketing
GitHub Copilot B | Perplexity S | Cartesia S | DALL-E 3 B | |
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| Tagline | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | AI search done right. Cited answers, not chat theater. | Ultra-low-latency voice. Built for realtime agents. | OpenAI's image model. Built into ChatGPT Plus. |
| Category | Coding | Research | Voice | Image |
| Pricing | Free (limited) + $10/mo Pro + $19/mo Business | Free + $20/mo Pro | Free tier + usage-based API | Included with ChatGPT Plus $20/mo |
| Best for | Teams with GitHub already. Devs who don't want to change IDEs. | Replacing Google for any question where you want a cited answer in seconds. | Developers building voice agents, phone bots, interactive apps. | ChatGPT Plus users who want images without paying extra. |
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| Kai's verdict | B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't. | S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week. | S-tier for realtime. If latency matters more than voice catalog, start here. | B-tier standalone, A-tier value if you already pay ChatGPT. Don't pay for it separately. |
| Link | Open → | Open → | Open → | Open → |