We've compared 2 tools across pricing, features, ratings, and reviews to help you make an informed decision. No paid placements — just facts.
Compare different tools →| Feature | M Mattermost Communication & Chat |  Grok Communication & Chat |
|---|---|---|
| Rating | No reviews yet | No reviews yet |
| Pricing | Free as of Aug 29, 2026 |
as of Aug 29, 2026 |
| Pricing Model | Contact Sales | Freemium |
| Free Plan | ||
| Free Trial | Yes |
| API Available |
| Verified |
| Founded | 2016 | 2023 |
| HQ | Palo Alto, CA | Palo Alto, California, United States |
| Team Size | 201-500 | — |
| Platforms | WebiOSAndroidMac+3 more | — |
| Top Integrations | MS TeamsAtlassianGitLab | X (Twitter) |
| Key Features |
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| Description | Mattermost is the open-source platform for secure, high-trust collaboration. Used by NASA, Airbus, and the US Department of Defense, Mattermost provides Slack-like collaboration with on-premises deployment for security-conscious teams. | Grok is an AI chatbot developed by xAI, available standalone at grok.com and bundled inside X through Premium plans. It provides sourced research via DeepSearch, pulls live posts from X for current-events questions, and supports extended reasoning, image and video generation, document creation, agentic tool use, and multi-agent reasoning. Developers can access Grok through a usage-based, OpenAI-compatible API with vision, function calling, code execution, and web search capabilities. |
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