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
Elicit S | ChatGPT Operator B | Cursor S | Claude Agent SDK S | |
|---|---|---|---|---|
| Tagline | AI research assistant for academic literature. | OpenAI's browser agent. Clicks and types on websites for you. | VS Code fork that made AI coding actually work. | Anthropic's SDK for building your own agents on Claude. |
| Category | Research | Agents | Coding | Agents |
| Pricing | Free + $12-$42/mo | Included with ChatGPT Pro $200/mo | Free + $20/mo Pro + $40/mo Business | API usage + SDK is free |
| Best for | Grad students, researchers, anyone doing literature reviews. | Power users willing to pay $200/mo for a browser bot. | Developers. Non-developers who want to ship working code. | Developers building custom agents for their own company/product. |
| Strengths |
|
|
|
|
| Weaknesses |
|
|
|
|
| Kai's verdict | S-tier for academic research. Nothing else comes close for systematic reviews. | B-tier. Still early. Manus is more flexible for less money. | S-tier for coding. If you write code of any kind, this pays back the $20 in a day. | S-tier for builders. The right primitives. What Kai is built on under the hood. |
| Link | Open → | Open → | Open → | Open → |