The add-on runs on Grok 4.5, xAI's frontier model released on July 8, 2026 . According to xAI's official documentation, Grok 4.5 is built for coding, agentic tasks, and knowledge work, with a 500,000-token context window, support for text and image modalities, function calling, structured outputs, and reasoning capability . API pricing is $2 per million input tokens and $6 per million output tokens .
Each app gets targeted capabilities:
A key design principle is that the add-on edits files in-place rather than exporting non-editable images, making it easier for users to review and modify AI-generated content .
The most striking strategic difference is pricing. Grok for Google Workspace is a free add-on (a free Grok account is required; SuperGrok subscription may apply for higher usage tiers) . By contrast, Google's Gemini Workspace Intelligence is bundled with Google Workspace Business/Enterprise plans at Gemini tiers, with Gemini Business costing roughly $20/user/month and Gemini Enterprise around $30/user/month . Microsoft 365 Copilot costs $30/user/month on top of a Microsoft 365 Business/Enterprise license .
| Product | Pricing | Strategy |
|---|---|---|
| Grok for Google Workspace | Free add-on (higher usage may require SuperGrok) | Low-cost entry to pull users into xAI's ecosystem |
| Google Gemini Workspace Intelligence | Bundled at ~$20–$30/user/month | Native deep integration, upsell within Workspace billing |
| Microsoft 365 Copilot | $30/user/month on top of M365 license | Premium-priced, deeply embedded in Office, Teams, and Graph |
xAI is using free, cross-platform availability to undercut incumbents and build user adoption .
Grok for Google Workspace arrived at the end of a rapid-fire productivity suite push in mid-2026:
xAI went from zero productivity integrations to covering both Microsoft 365 and Google Workspace in about five weeks — a deliberate "land and expand" strategy using free add-ins as the wedge, powered by the same Grok 4.5 model across both ecosystems .
One caveat: The Google Workspace Marketplace listing and many news reports do not explicitly name "Grok 4.5" in the add-on description itself, but multiple outlets confirm the add-on runs on Grok 4.5 , and xAI's own docs list Grok 4.5 as the current production model as of July 21, 2026 .