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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Replit Agent A | Hex A | OpenRouter S | Claude Code S | |
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| Tagline | Replit's AI that builds + deploys full apps on their platform. | Modern data notebook with Magic AI assistant. | One API, every model. Pay-as-you-go, no subscriptions. | Anthropic's CLI agent. Opus-powered, operates on your repo directly. |
| Category | Coding | Data | Dev Platform | Coding |
| Pricing | $10-$25/mo Core/Teams | Free + $28+/user/mo | Pay per token — model-dependent | Part of Claude Pro/Max/Team plans |
| Best for | Teachers, students, prototypers, hackathon builders. | Data teams at startups + enterprises. | Developers experimenting across models. Apps that want fallback logic. | Developers who want an agent, not autocomplete. Large refactors, tests, docs. |
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| Kai's verdict | A-tier. Best for teaching a kid to code in 2026. | A-tier for data teams. S-tier if you already live in SQL + Python. | S-tier for model-shopping. I use this for every prototype before committing. | S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement. |
| Link | Open → | Open → | Open → | Open → |