Free
Free
- message history: 90 days
- apps: 10
AI conversation summaries · Slack Connect (1:1) · Audio and video meetings
Slack vs Mattermost Pricing Comparison
Comparing historical price movements, current plan features, and price change logs for Slack and Mattermost.
Slack
Full Slack history →10 dated pricing states tracked since 2015. Entry pricing in the latest mapped state starts at $7.5/mo.
Mattermost
Full Mattermost history →14 dated pricing states tracked since 2018. Entry pricing in the latest mapped state starts at Custom / Quote.
Coverage last checked Slack: 2026-08-04; Mattermost: 2026-08-04. Verify current offers on the vendors' pricing page and pricing page. Read the methodology and limitations.
Executive pricing summary
SaasTrack has logged historical pricing snapshots for both Slack and Mattermost in the Communication software category. Currently, Slack entry pricing starts at $7.5/mo across 8 plans, while Mattermost entry pricing starts at Custom / Quote across 3 plans. Over the tracking period, Slack has recorded 180 price adjustments compared to 158 for Mattermost.
Slack vs Mattermost Key Metrics Table
| Comparison Metric | Slack | Mattermost |
|---|---|---|
| Starting Entry Price | $7.5/mo | Custom / Quote |
| Active Plan Count | 8 plans | 3 plans |
| Logged Price Changes | 180 changes | 158 changes |
| Tracking Since | 2015 | 2018 |
| Market Category | Communication | Communication |
Merged Price History Chart
SlackvsMattermostUnified Price Chart
Slack is blue. Mattermost is orange. Filter by window and plan with the controls below.
latest · 2026-12-09
Slack: Slack Enterprise Grid, GovSlack — quoted on request, never listed with a price; Mattermost: Enterprise, Enterprise Advanced — quoted on request, never listed with a price.
Slack plans today
Pro
$8.75 /user/mo
$7.25/user/mo billed yearly
AI conversation summaries · Group meetings · Slack Connect (groups) · message history · apps
Business+
$18 /user/mo
$15/user/mo billed yearly
Group meetings · Slack Connect (groups) · message history · Advanced AI features · apps
Enterprise
Contact sales
message history · apps · Enterprise Grade AI · Custom security features
Pricing timeline10 changes since Jan 2015
Todaylive prices
Mattermost plans today
Professional
Contact sales
Access Controls & Automation · Support · Integrations Platform · Channel-Based Collaboration · Multi-Team Collaboration
Enterprise
Contact sales
Federated Communications · Real-Time Communications · Critical Infrastructure Hardening · Compliance & Administration · Agentic Platform
Enterprise Advanced
Contact sales
Security-Optimized Mobility · Enterprise Mobility · Zero Trust Security · Ultra-High Resiliency · Classified and Sensitive Information Control
Pricing timeline16 changes since Jul 2018
Todaylive prices
Slack recent price changes
Slack change log
| When | Event | What changed |
|---|---|---|
| 2026-08-04 | Price up | Business+: 15 → 18 (monthly) |
| 2026-08-04 | Price up | Business+: 12.50 → 15 (annual) |
Mattermost recent price changes
Mattermost change log
| When | Event | What changed |
|---|---|---|
| 2026-03-11 | Plan removed | Free Evaluation |
Frequently asked questions
Which is cheaper, Slack or Mattermost?
Entry pricing for Slack starts at $7.5/mo, while Mattermost entry pricing starts at Custom / Quote. Check the interactive timeline chart above to compare plan features and seat pricing side by side.
How frequently do Slack and Mattermost adjust their prices?
SaasTrack has logged 180 price modifications for Slack since 2015 and 158 price modifications for Mattermost since 2018.
Can I track future price increases for Slack and Mattermost?
Yes, creating a free account on SaasTrack allows you to set automated watchlist alerts whenever Slack, Mattermost, or other competitors update their plans.
Are historical price change logs free to view for Slack vs Mattermost?
Yes! All historical pricing charts, active plan feature breakdowns, and change logs for both Slack and Mattermost are 100% free to view on SaasTrack without creating an account.
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