Microsoft Copilot vs Grok

Microsoft Copilot and Grok are both AI Chat & Assistants tools (Chatbots). Below: what each costs, what it does well, its biggest catches, and who should pick which, all from public sources rather than our own testing.

Side by side

Microsoft CopilotGrok
CategoryAI Chat & Q&A · ChatbotsAI Chatbots · Conversational AI
PricingFree tier: yes. Microsoft 365 Premium $19.99/mo. Microsoft 365 Copilot Business $18/user/mo paid yearly (discounted from $21), $25.20 on monthly billing. (checked Oct 10, 2026)Free tier: yes. SuperGrok $30/mo, SuperGrok Plus $100/mo. (checked Oct 10, 2026)
Pros
  • Free Copilot chat on the web and in the app is genuinely usable
  • Microsoft 365 Premium bundles Office apps, storage and expanded Copilot
  • Works across Word, Excel and Outlook on paid plans
  • Free tier includes chat, voice and real-time web and X search
  • SuperGrok adds higher limits, frontier models, and image and video generation
  • SuperGrok Plus ($100/mo) adds much higher usage and 1080p video
Catches
  • The free version lacks deep Office-app AI and agents
  • On Premium, AI benefits apply only to the subscription owner, not family members
  • For business, Microsoft 365 Copilot is an add-on: $18/user/mo yearly is a discounted price (regular $21), and it sits on top of a Microsoft 365 plan
  • No published usage numbers on the pricing page. Limits are described, not counted
  • Shared usage means video and coding can eat into chat
  • SuperGrok costs $30/mo, $10 more than ChatGPT Plus or Claude Pro
Best forMicrosoft 365 households and businesses.Heavy X users who want real-time context.
Skip it ifYou mainly need free chat. You don't have to pay.You need published caps, or the cheapest $20 tier.

Which should you pick?

Pick Microsoft Copilot if…

you fit this: microsoft 365 households and businesses.

But not if: you mainly need free chat. You don't have to pay.

Watch out for: The free version lacks deep Office-app AI and agents.

Pick Grok if…

you fit this: heavy X users who want real-time context.

But not if: you need published caps, or the cheapest $20 tier.

Watch out for: No published usage numbers on the pricing page. Limits are described, not counted.

More options

Sources

Microsoft Copilot

Grok

Pros, catches and prices are compiled from public sources (official pricing and docs pages, published reviews, user reports), not hands-on testing. Prices change often, so check the vendor page before you buy.