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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Gemini A | ChatGPT Operator B | Perplexity S | Fireflies A | |
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| Tagline | Google's answer. Best integrated with Workspace + free for a lot. | OpenAI's browser agent. Clicks and types on websites for you. | AI search done right. Cited answers, not chat theater. | Sales-focused meeting AI with CRM integration. |
| Category | Chatbots | Agents | Research | Meetings |
| Pricing | Free + $20/mo Advanced (bundled with 2TB Drive) | Included with ChatGPT Pro $200/mo | Free + $20/mo Pro | Free + $10-$19/user/mo |
| Best for | Anyone already on Google, research tasks, summarizing long documents. | Power users willing to pay $200/mo for a browser bot. | Replacing Google for any question where you want a cited answer in seconds. | Sales teams, customer success, anyone running many discovery calls. |
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| Kai's verdict | A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google. | B-tier. Still early. Manus is more flexible for less money. | S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week. | A-tier for sales teams. B-tier for solo users. |
| Link | Open → | Open → | Open → | Open → |