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
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GitHub Copilot B | Devin A | Qwen A | Manus S | |
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| Tagline | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | Cognition Labs' autonomous coding engineer. | Alibaba's open chat model. Multilingual + agentic. | Autonomous AI agent that actually finishes tasks. |
| Category | Coding | Agents | Chatbots | Agents |
| Pricing | Free (limited) + $10/mo Pro + $19/mo Business | $500/mo | Free web + API | Free tier + $39-$199/mo |
| Best for | Teams with GitHub already. Devs who don't want to change IDEs. | Engineering teams offloading tickets. Ops/platform work. | Vietnamese/Chinese content, SEA multilingual use, developers wanting open-weight tool-use. | People who want to hand off tasks entirely — trip planning, research, spreadsheet building. |
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| Kai's verdict | B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't. | A-tier for the right use case. Not for solo devs. If you manage engineers, try one license. | A-tier. The best open model for Vietnamese + Chinese. Don't sleep on it if you work in SEA. | S-tier in the agent category. The first one I'd give to a non-technical friend. |
| Link | Open → | Open → | Open → | Open → |