The corporate citizen against the provocateur. Copilot lives where work documents live; Grok lives where the conversation is. Almost nobody is genuinely torn between these two — but the price-per-value gap is instructive.
Copilot (free; $16.67/mo with Office) for workplace document AI. SuperGrok ($30/mo) for frontier reasoning plus live X data. They solve different problems — price them against the problem you actually have.
By Microsoft. Full Copilot profile →
By xAI. Full Grok profile →
Best for: Excel data, Word drafting, PowerPoint decks, Outlook triage
Weakness: Pro plan is half-useful without an M365 subscription on top
From $0 (free)/mo. Top tier: $16.67/mo.
Best for: Current events, X/Twitter integration, less-filtered responses
Weakness: Most expensive consumer plan; quality inconsistent vs frontier models
From $0 (free)/mo. Top tier: $300/mo.
Pick Copilot for work: Office integration from free to $16.67/mo, enterprise-grade controls, and the safest procurement story in AI. It's the default for Microsoft shops for a reason.
Pick Grok for the frontier-and-X combination: Grok 4.5's benchmark performance plus live X data at $30/mo. It's a personal power tool, not a workplace suite.
Office documents and IT approval → Copilot. Real-time information and raw model power → Grok.
As a raw model, Grok 4.5 is far stronger than Copilot's consumer tier. As a work tool, Copilot's Office integration does things Grok can't touch. Different products wearing the same 'AI assistant' label.
Copilot — basic chat is free and the full Office bundle is $16.67/mo (billed annually). Grok starts at $30/mo for SuperGrok, $40 via X Premium+, and $300 for Heavy.
You can paste text in, but there's no native Office integration. For in-document AI, Copilot (or Gemini on the Google side) is the tool.