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 | Reflect A | Synthesia A | Perplexity S | |
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| Tagline | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | AI-powered networked notes. Roam with a brain. | Enterprise AI avatar video for training + comms. | AI search done right. Cited answers, not chat theater. |
| Category | Coding | Productivity | Video | Research |
| Pricing | Free (limited) + $10/mo Pro + $19/mo Business | $10/mo | $22-$89/mo + enterprise | Free + $20/mo Pro |
| Best for | Teams with GitHub already. Devs who don't want to change IDEs. | Knowledge workers + thinkers who want AI in their second brain. | Enterprise L&D, corporate training, internal comms. | Replacing Google for any question where you want a cited answer in seconds. |
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| Kai's verdict | B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't. | A-tier. Niche but beloved. If you've outgrown Notion, try this. | A-tier. HeyGen wins for creators, Synthesia wins for enterprise. | S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week. |
| Link | Open → | Open → | Open → | Open → |