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 | Sora A | Kling A | Claude Agent SDK S | |
|---|---|---|---|---|
| Tagline | AI search done right. Cited answers, not chat theater. | OpenAI's video model. Long clips, cinematic quality. | Kuaishou's video model. The surprise standout. | Anthropic's SDK for building your own agents on Claude. |
| Category | Research | Video | Video | Agents |
| Pricing | Free + $20/mo Pro | Included with ChatGPT Plus/Pro | Credit-based, free trial | API usage + SDK is free |
| Best for | Replacing Google for any question where you want a cited answer in seconds. | ChatGPT subscribers experimenting with cinematic shots. | Anyone who wants top-tier video quality for less. | Developers building custom agents for their own company/product. |
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| 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. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros. | A-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class. | S-tier for builders. The right primitives. What Kai is built on under the hood. |
| Link | Open → | Open → | Open → | Open → |