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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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Leonardo.ai A | HeyGen S | Adobe Firefly A | Replicate S | |
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| Tagline | Gamer + creator image gen with model fine-tuning built in. | AI avatar videos. Record once, speak any language. | Commercially safe image gen, deeply integrated with Photoshop. | Run any open-source AI model with an API call. |
| Category | Image | Video | Image | Dev Platform |
| Pricing | Free + $12-$60/mo | Free + $24-$65/mo | Free + included with Creative Cloud | Pay per second of compute |
| Best for | Indie game devs, illustrators, anyone training custom style models. | Course creators, multilingual marketers, anyone scaling video content. | Anyone in Creative Cloud. Brands that need copyright clarity. | Developers using open-source models (Flux, SDXL, Whisper, etc). |
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| Kai's verdict | A-tier for creators training custom looks. B-tier for general use. | S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code. | S-tier inside Photoshop (Generative Fill). B-tier standalone. | S-tier for open-source model APIs. The default in this space. |
| Link | Open → | Open → | Open → | Open → |