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
Cursor S | ChatGPT S | ChatGPT Operator B | Devin A | |
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| Tagline | VS Code fork that made AI coding actually work. | The default. Strongest ecosystem + best multimodal breadth. | OpenAI's browser agent. Clicks and types on websites for you. | Cognition Labs' autonomous coding engineer. |
| Category | Coding | Chatbots | Agents | Agents |
| Pricing | Free + $20/mo Pro + $40/mo Business | Free + $20/mo Plus + $200/mo Pro | Included with ChatGPT Pro $200/mo | $500/mo |
| Best for | Developers. Non-developers who want to ship working code. | General use, voice chat, image generation, first-time AI users. | Power users willing to pay $200/mo for a browser bot. | Engineering teams offloading tickets. Ops/platform work. |
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| Kai's verdict | S-tier for coding. If you write code of any kind, this pays back the $20 in a day. | S-tier all-rounder. If you want one tool that does everything okay-to-great, this is it. | B-tier. Still early. Manus is more flexible for less money. | A-tier for the right use case. Not for solo devs. If you manage engineers, try one license. |
| Link | Open → | Open → | Open → | Open → |