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)
coding
image
productivity
writing
marketing
GitHub Copilot B | Replit Agent A | Lex A | Sora A | |
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| Tagline | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | Replit's AI that builds + deploys full apps on their platform. | Google Docs with an AI collaborator baked in. | OpenAI's video model. Long clips, cinematic quality. |
| Category | coding | coding | writing | video |
| Pricing | Free (limited) + $10/mo Pro + $19/mo Business | $10-$25/mo Core/Teams | Free + $12/mo | Included with ChatGPT Plus/Pro |
| Best for | Teams with GitHub already. Devs who don't want to change IDEs. | Teachers, students, prototypers, hackathon builders. | Essays, long-form drafts, thinking on the page. | ChatGPT subscribers experimenting with cinematic shots. |
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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. Best for teaching a kid to code in 2026. | A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form. | A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros. |
| Link | Open → | Open → | Open → | Open → |