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Rocket.Chat vs Slack: Pricing Comparison 2026

Side-by-side pricing comparison of Rocket.Chat and Slack. See all plans, features, and costs at a glance.

Bottom line: Both Rocket.Chat and Slack offer free plans. Rocket.Chat has 3 pricing tiers while Slack has 4.

Last updated: March 16, 2026

Data compiled by Arthur Jacquemin
Updated March 16, 2026
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Rocket.Chat vs Slack: Quick Pricing Facts

FeatureRocket.ChatSlack
Starting PriceCustom pricing$8.75/mo
Number of Plans34
Free TierYesYes
Pricing Modelopen-sourceper-seat
Annual DiscountN/AN/A

Rocket.Chat and Slack are both priced at Custom pricing, making them equally accessible Communication tools. Together they offer 7 pricing plans with 79 features compared, so the best choice comes down to which features match your needs.

Both tools offer free plans, making them accessible for teams on a budget. Rocket.Chat uses open-source pricing while Slack uses per-seat pricing, which may affect your total cost at scale.

Review the detailed tier-by-tier comparison above to see exactly which features are included at each price point and find the best fit for your Communication needs.

Pricing Plans
Rocket.Chat
Rocket.Chat
Try it free
Slack
Tier 1
Starter
$0/monthCheapest
Includes
  • Deployment & operational control
  • Secure messaging essentials
  • Real-time communications
  • Identity access management
  • Extensibility & customization
  • Mobility and endpoint access
  • Federated communications
  • Peer-to-peer community assistance
Start with Starter
Free
$0/monthCheapest
Includes
  • 90 days of message history
  • Up to 10 apps
  • 1:1 meetings
  • 1:1 external messages
  • Basic AI
  • AI conversation summaries
  • Slackbot (personal AI agent)
  • AI workflow generation
  • AI search
  • AI daily recaps
  • AI file summaries
  • SAML-based single sign-on
  • SCIM user management
  • EMM integration support
  • Native data loss prevention
Start with Free
Tier 2
Pro
Custom pricing
Includes
  • Deployment flexibility and scaling
  • Advanced customizations
  • Standard operational support
Start with Pro
Pro
$9/monthCheapest
Includes
  • Unlimited message history
  • Unlimited app integrations
  • Group meetings
  • Group external messages
  • Basic AI
  • AI conversation summaries
  • Slackbot (personal AI agent)
  • AI workflow generation
  • AI search
  • AI daily recaps
  • AI file summaries
  • SAML-based single sign-on
  • SCIM user management
  • EMM integration support
  • Native data loss prevention
Start with Pro
Tier 3
Enterprise
Custom pricing
Includes
  • Mission-critical scalability and resilience
  • Real-time communications
  • Advanced identity and access controls
  • Audit and information governance
  • Zero trust security
  • Sovereign AI
  • Cross-agency collaboration
  • Operational continuity and support
Start with Enterprise
Business+Popular
$18/monthCheapest
Includes
  • Unlimited message history
  • Unlimited app integrations
  • Group meetings
  • Group external messages
  • Advanced AI
  • AI conversation summaries
  • Slackbot (personal AI agent) NEW
  • AI workflow generation
  • AI search
  • AI daily recaps
  • AI file summaries
  • SAML-based single sign-on
  • SCIM user management
  • EMM integration support
  • Native data loss prevention
Start with Business+
Tier 4
—
Enterprise+
Custom pricing
Includes
  • Unlimited message history
  • Unlimited app integrations
  • Group meetings
  • Group external messages
  • Enterprise-Grade AI
  • AI conversation summaries
  • Slackbot (personal AI agent) NEW
  • AI workflow generation
  • Enterprise search
  • AI daily recaps
  • AI file summaries
  • Multiple SAML configurations
  • SCIM user management
  • EMM integration support
  • Native data loss prevention
Start with Enterprise+

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Rocket.Chat

Open-source team communication platform you can self-host

View all Rocket.Chat plans

Slack

Channel-based messaging platform for teams

View all Slack plans

What Reviewers Say

Our Pick

Slack

Slack offers a free plan, offers 4 tiers vs 3.

Based on pricing data only. Review the full comparison below for your specific needs.

Best value: Slack

Try Slack free

Which Should You Choose?

Choose Rocket.Chat if:

  • •You prefer Rocket.Chat's free tier features—Deployment & operational control, Secure messaging essentials
  • •You prioritize Rocket.Chat's user experience and interface over price (both tools are similarly priced)
  • •You need predictable billing — Rocket.Chat's open-source model avoids surprise overages

Choose Slack if:

  • •You prefer Slack's free tier features—90 days of message history, Up to 10 apps
  • •You need 4 pricing tiers for flexible team sizing—more options mean less overpaying for features you don't need
  • •You want more features built-in—Slack offers 41 additional features across its plans

Both Rocket.Chat and Slack offer free plans [1], eliminating cost barriers for evaluation. This means you can test both tools thoroughly with your actual workflows before any financial commitment. The free tiers differ in scope: Rocket.Chat includes 8 features, while Slack includes 15 features. Evaluate which free tier matches your evaluation needs before deciding to upgrade. Your best approach is to activate both free trials and evaluate which tool's workflow, integrations, and user experience align better with your team's needs before committing to paid plans.

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Frequently Asked Questions: Rocket.Chat vs Slack

How many pricing plans does Rocket.Chat have vs Slack?
Rocket.Chat offers 3 pricing plans, while Slack offers 4 plans. More plans typically means more flexibility to match your exact needs and budget.
Does Rocket.Chat or Slack offer a free plan?
Yes, both Rocket.Chat and Slack offer free plans. Compare the feature limits of each free tier to see which better fits your use case before upgrading.
What is the most popular Slack plan?
The Business+ plan is Slack's most popular tier, priced at $18/mo. Key features include Unlimited message history, Unlimited app integrations, Group meetings.
Does Rocket.Chat or Slack offer custom enterprise pricing?
Yes, both Rocket.Chat and Slack offer custom enterprise pricing tiers with quote-based pricing. Contact each vendor for a tailored quote.
What pricing models do Rocket.Chat and Slack use?
Rocket.Chat uses a open-source pricing model, while Slack uses per-seat pricing. The right model depends on your team size and usage patterns.
How do Rocket.Chat and Slack compare for Communication?
Both Rocket.Chat and Slack are Communication tools. Rocket.Chat offers 3 plans starting at Custom pricing, while Slack offers 4 plans starting at $8.75/mo. Review the feature breakdowns above to see which better fits your Communication needs.

Sources

  1. Rocket.Chat Official Pricing— Vendor pricing page
  2. Slack Official Pricing— Vendor pricing page

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