Microsoft's free bundled AI vs OpenAI's premium market leader.
by Microsoft
Microsoft Copilot is the AI layer across Microsoft's product ecosystem — built into Windows 11, Edge browser, Bing search, and Microsoft 365 apps. It runs GPT-4o under the hood and gives you a capable AI assistant at no extra cost if you already use Microsoft products. Copilot Pro unlocks deeper Office integration and faster responses.
by OpenAI
OpenAI's flagship assistant. Strong at general reasoning, writing, code. GPT-4o free, GPT-5 + o3 on Plus ($20/mo).
| Feature | Microsoft Copilot | ChatGPT |
|---|---|---|
| Vendor | Microsoft | OpenAI |
| Category | Conversational AI | Conversational AI |
| Free tier | Yes | Yes |
| Starting price | Free / $30/mo | Free / $20/mo |
| Strengths | Free for most users — built into Windows and Edge, Real-time Bing web search in every answer, Integrated with Office 365 (Word, Excel, Outlook) | widest feature set, huge plugin/GPT ecosystem, voice mode |
| Weaknesses | Less capable than Claude on complex reasoning, No persistent memory across sessions by default | rate-limited on free tier, no transparent sources |
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