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
Lex A | GitHub Copilot B | Groq S | Suno S | |
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| Tagline | Google Docs with an AI collaborator baked in. | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | The fastest AI inference in the world. Crazy low latency. | Prompt to full song with vocals, instruments, the works. |
| Category | Writing | Coding | Dev Platform | Audio |
| Pricing | Free + $12/mo | Free (limited) + $10/mo Pro + $19/mo Business | Free tier + pay-as-you-go API | Free + $10/mo + $30/mo |
| Best for | Essays, long-form drafts, thinking on the page. | Teams with GitHub already. Devs who don't want to change IDEs. | Developers who need sub-100ms LLM responses. | Jingles, intros, demos, sketches, personal use. |
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| Kai's verdict | A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form. | B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't. | S-tier for speed. When latency is the product, start here. | S-tier in its category. The first AI music tool I'd actually listen to. |
| Link | Open → | Open → | Open → | Open → |