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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Coding
Image
Productivity
Writing
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OpenRouter S | Adobe Firefly A | Claude Code S | NotebookLM S | |
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| Tagline | One API, every model. Pay-as-you-go, no subscriptions. | Commercially safe image gen, deeply integrated with Photoshop. | Anthropic's CLI agent. Opus-powered, operates on your repo directly. | Google's research notebook. Turns your docs into a podcast. |
| Category | Dev Platform | Image | Coding | Research |
| Pricing | Pay per token — model-dependent | Free + included with Creative Cloud | Part of Claude Pro/Max/Team plans | Free |
| Best for | Developers experimenting across models. Apps that want fallback logic. | Anyone in Creative Cloud. Brands that need copyright clarity. | Developers who want an agent, not autocomplete. Large refactors, tests, docs. | Students, researchers, anyone with a stack of PDFs or a topic to learn. |
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| Kai's verdict | S-tier for model-shopping. I use this for every prototype before committing. | S-tier inside Photoshop (Generative Fill). B-tier standalone. | S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement. | S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs. |
| Link | Open → | Open → | Open → | Open → |