Lark vs Mattermost: Complete Comparison (2026)
Choosing between Lark and Mattermost is a common decision for team communication buyers in 2026. Both Lark and Mattermost are established players, founded in 2016 and 2015 respectively. Lark serves 30M+ users while Mattermost has 800K+ users globally. Lark differentiates with chat and channels and collaborative docs, while Mattermost leads with self-hosted deployment and channels. In this head-to-head comparison, Lark earns a higher hiltonsoftware.co score of 88/100 — but the right choice depends on your specific needs, budget, and team size.
Quick Comparison
Feature-by-Feature Comparison
Pros & Cons at a Glance
After comparing Lark and Mattermost across features, pricing, and user satisfaction, Lark takes the lead with a score of 88/100 versus Mattermost's 86/100. Lark's key advantages include "generous free tier" and "integrated docs and meetings". That said, Mattermost has its own strengths — particularly "full data control" — making it a viable alternative for specific use cases.
Both Lark and Mattermost offer free plans, lowering the barrier to entry. Lark's paid plans start at $12/user/mo while Mattermost begins at $10/user/mo (cloud). Evaluate which paid features — Video meetings, Calendar (Lark) vs DevOps integrations, Compliance tools (Mattermost) — justify upgrading for your team.
Bottom line: Choose Lark if you need international teams wanting an all-in-one collaboration suite. Go with Mattermost if your priority is enterprises needing data sovereignty and self-hosting. Both are strong team communication tools — we recommend trying the free plan of each before committing.
International teams wanting an all-in-one collaboration suite.
Enterprises needing data sovereignty and self-hosting.