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
Devin A | HeyGen S | Claude Agent SDK S | DALL-E 3 B | |
|---|---|---|---|---|
| Tagline | Cognition Labs' autonomous coding engineer. | AI avatar videos. Record once, speak any language. | Anthropic's SDK for building your own agents on Claude. | OpenAI's image model. Built into ChatGPT Plus. |
| Category | Agents | Video | Agents | Image |
| Pricing | $500/mo | Free + $24-$65/mo | API usage + SDK is free | Included with ChatGPT Plus $20/mo |
| Best for | Engineering teams offloading tickets. Ops/platform work. | Course creators, multilingual marketers, anyone scaling video content. | Developers building custom agents for their own company/product. | ChatGPT Plus users who want images without paying extra. |
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| Kai's verdict | A-tier for the right use case. Not for solo devs. If you manage engineers, try one license. | S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code. | S-tier for builders. The right primitives. What Kai is built on under the hood. | B-tier standalone, A-tier value if you already pay ChatGPT. Don't pay for it separately. |
| Link | Open → | Open → | Open → | Open → |