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)
Dev Platform
Agents
Video
Coding
Image
Productivity
Writing
Marketing
Perplexity S | Duolingo Max A | Kling A | Hex A | |
|---|---|---|---|---|
| Tagline | AI search done right. Cited answers, not chat theater. | Duolingo + AI. Explain My Answer + Roleplay features. | Kuaishou's video model. The surprise standout. | Modern data notebook with Magic AI assistant. |
| Category | Research | Education | Video | Data |
| Pricing | Free + $20/mo Pro | $30/mo (or ~$168/yr) | Credit-based, free trial | Free + $28+/user/mo |
| Best for | Replacing Google for any question where you want a cited answer in seconds. | Language learners who've outgrown basic Duolingo. | Anyone who wants top-tier video quality for less. | Data teams at startups + enterprises. |
| Strengths |
|
|
|
|
| Weaknesses |
|
|
|
|
| Kai's verdict | S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week. | A-tier. If you already love Duolingo, worth it. If starting fresh, try ChatGPT Voice instead. | A-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class. | A-tier for data teams. S-tier if you already live in SQL + Python. |
| Link | Open → | Open → | Open → | Open → |