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
Replit Agent A | Descript S | Sora A | Devin A | |
|---|---|---|---|---|
| Tagline | Replit's AI that builds + deploys full apps on their platform. | Edit video + podcasts by editing the transcript. | OpenAI's video model. Long clips, cinematic quality. | Cognition Labs' autonomous coding engineer. |
| Category | Coding | Video | Video | Agents |
| Pricing | $10-$25/mo Core/Teams | Free + $16-$50/mo | Included with ChatGPT Plus/Pro | $500/mo |
| Best for | Teachers, students, prototypers, hackathon builders. | Podcasters, course creators, anyone editing talking-head content. | ChatGPT subscribers experimenting with cinematic shots. | Engineering teams offloading tickets. Ops/platform work. |
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| Kai's verdict | A-tier. Best for teaching a kid to code in 2026. | S-tier for content creators. Cuts editing time in half. Non-obvious but life-changing. | A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros. | A-tier for the right use case. Not for solo devs. If you manage engineers, try one license. |
| Link | Open → | Open → | Open → | Open → |