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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ChatGPT Operator B | Claude Agent SDK S | Elicit S | |
|---|---|---|---|
| Tagline | OpenAI's browser agent. Clicks and types on websites for you. | Anthropic's SDK for building your own agents on Claude. | AI research assistant for academic literature. |
| Category | Agents | Agents | Research |
| Pricing | Included with ChatGPT Pro $200/mo | API usage + SDK is free | Free + $12-$42/mo |
| Best for | Power users willing to pay $200/mo for a browser bot. | Developers building custom agents for their own company/product. | Grad students, researchers, anyone doing literature reviews. |
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| Kai's verdict | B-tier. Still early. Manus is more flexible for less money. | S-tier for builders. The right primitives. What Kai is built on under the hood. | S-tier for academic research. Nothing else comes close for systematic reviews. |
| Link | Open → | Open → | Open → |