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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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Claude Agent SDK S | Perplexity S | Suno S | Adobe Firefly A | |
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| Tagline | Anthropic's SDK for building your own agents on Claude. | AI search done right. Cited answers, not chat theater. | Prompt to full song with vocals, instruments, the works. | Commercially safe image gen, deeply integrated with Photoshop. |
| Category | Agents | Research | Audio | Image |
| Pricing | API usage + SDK is free | Free + $20/mo Pro | Free + $10/mo + $30/mo | Free + included with Creative Cloud |
| Best for | Developers building custom agents for their own company/product. | Replacing Google for any question where you want a cited answer in seconds. | Jingles, intros, demos, sketches, personal use. | Anyone in Creative Cloud. Brands that need copyright clarity. |
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| Kai's verdict | S-tier for builders. The right primitives. What Kai is built on under the hood. | S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week. | S-tier in its category. The first AI music tool I'd actually listen to. | S-tier inside Photoshop (Generative Fill). B-tier standalone. |
| Link | Open → | Open → | Open → | Open → |