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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Productivity
Writing
Marketing
Gemini A | Perplexity S | Jasper B | ChatGPT Operator B | |
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| Tagline | Google's answer. Best integrated with Workspace + free for a lot. | AI search done right. Cited answers, not chat theater. | Marketing-first AI writing. Brand voice + campaign tools. | OpenAI's browser agent. Clicks and types on websites for you. |
| Category | Chatbots | Research | Marketing | Agents |
| Pricing | Free + $20/mo Advanced (bundled with 2TB Drive) | Free + $20/mo Pro | $49-$129/mo | Included with ChatGPT Pro $200/mo |
| Best for | Anyone already on Google, research tasks, summarizing long documents. | Replacing Google for any question where you want a cited answer in seconds. | Marketing teams that need brand-consistent output at scale. | Power users willing to pay $200/mo for a browser bot. |
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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. | S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week. | B-tier for individuals — Claude does this for less. A-tier for teams needing brand consistency. | B-tier. Still early. Manus is more flexible for less money. |
| Link | Open → | Open → | Open → | Open → |