Professional
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Access Controls & Automation · Support · Integrations Platform · Channel-Based Collaboration · Multi-Team Collaboration
Mattermost vs Slack Pricing Comparison
Comparing historical price movements, current plan features, and price change logs for Mattermost and Slack.
Mattermost
Full Mattermost history →14 dated pricing states tracked since 2018. Entry pricing in the latest mapped state starts at Custom / Quote.
Slack
Full Slack history →10 dated pricing states tracked since 2015. Entry pricing in the latest mapped state starts at $7.5/mo.
Coverage last checked Mattermost: 2026-08-04; Slack: 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 Mattermost and Slack in the Communication software category. Currently, Mattermost entry pricing starts at Custom / Quote across 3 plans, while Slack entry pricing starts at $7.5/mo across 8 plans. Over the tracking period, Mattermost has recorded 158 price adjustments compared to 180 for Slack.
Mattermost vs Slack Key Metrics Table
| Comparison Metric | Mattermost | Slack |
|---|---|---|
| Starting Entry Price | Custom / Quote | $7.5/mo |
| Active Plan Count | 3 plans | 8 plans |
| Logged Price Changes | 158 changes | 180 changes |
| Tracking Since | 2018 | 2015 |
| Market Category | Communication | Communication |
Merged Price History Chart
MattermostvsSlackUnified Price Chart
Mattermost is blue. Slack is orange. Filter by window and plan with the controls below.
latest · 2026-12-09
Mattermost: Enterprise, Enterprise Advanced — quoted on request, never listed with a price; Slack: Slack Enterprise Grid, GovSlack — quoted on request, never listed with a price.
Mattermost plans today
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 plans today
Free
Free
- message history: 90 days
- apps: 10
AI conversation summaries · Slack Connect (1:1) · Audio and video meetings
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
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message history · apps · Enterprise Grade AI · Custom security features
Pricing timeline10 changes since Jan 2015
Todaylive prices
Mattermost recent price changes
Mattermost change log
| When | Event | What changed |
|---|---|---|
| 2026-03-11 | Plan removed | Free Evaluation |
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) |
Frequently asked questions
Which is cheaper, Mattermost or Slack?
Entry pricing for Mattermost starts at Custom / Quote, while Slack entry pricing starts at $7.5/mo. Check the interactive timeline chart above to compare plan features and seat pricing side by side.
How frequently do Mattermost and Slack adjust their prices?
SaasTrack has logged 158 price modifications for Mattermost since 2018 and 180 price modifications for Slack since 2015.
Can I track future price increases for Mattermost and Slack?
Yes, creating a free account on SaasTrack allows you to set automated watchlist alerts whenever Mattermost, Slack, or other competitors update their plans.
Are historical price change logs free to view for Mattermost vs Slack?
Yes! All historical pricing charts, active plan feature breakdowns, and change logs for both Mattermost and Slack are 100% free to view on SaasTrack without creating an account.
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