Versus Engine
ChatGPT Plus vs Microsoft 365 Copilot
Specs, price and the one trade-off that actually decides it — ChatGPT Plus against Microsoft 365 Copilot, side by side.
Cheaper to start
Tie
Both start at a similar price.
Best ecosystem
Tie
Neither lists native integrations.
Standout
ChatGPT Plus
Unmatched reasoning and general knowledge

ChatGPT Plus
OpenAI's $20/mo tier: broad reasoning and multi-modal input, shipped fast. Rate limits under load and hallucinations remain the trade-off.
Where it wins, where it doesn't
Pros
- Unmatched reasoning and general knowledge
- Seamless multi-modal capabilities
- Rapid feature rollouts
Cons
- Occasional rate limits during high load
- Hallucinations still occur
- UI can get cluttered with many chats
Microsoft 365 Copilot
A $30/user add-on that lives inside Teams, Outlook and PowerPoint. Strong at summarising threads and meetings; still finicky in Excel.
Where it wins, where it doesn't
Pros
- Deep integration into daily enterprise workflows
- Excellent at summarizing Teams meetings and email threads
- Generates PPT drafts instantly
Cons
- Very expensive per-user add-on
- Excel integration is still finicky with complex models
- Can hallucinate internal data if not scoped properly
