Slack Pricing Plans & Costs Guide

Slack has become one of the most powerful platforms for modern work, bringing people, projects, tools, and AI together in one place. More than just a messaging app, it’s a full work operating system trusted by over 80% of the Fortune 100 companies. With features for seamless collaboration, project management, thousands of integrations, and cutting-edge AI tools like Slack AI and Agentforce, teams can streamline workflows, automate tasks, and save hours every week.

Table of Contents

From managing sales proposals to resolving IT issues, Slack keeps work moving forward while connecting people inside and outside your organization. Millions of messages are sent daily, proving its role as the hub where real work happens. Before you choose the right option for your team, let’s break down Slack’s pricing plans and what they really cost. If you need a full-featured project management tool to work alongside Slack, try AceProject. Its pricing model is not dependent on the number of users, creating considerable savings over time.

How Much Does Slack Cost?

Choosing the right Slack pricing plan isn’t just about cost—it’s about equipping your team with the tools they actually need. From startups testing collaboration basics to global enterprises managing complex workflows and compliance, Slack offers flexible plans that scale with your business. Picking the right tier ensures you maximize productivity, security, and AI-powered features without paying for what you don’t need. Here are the four pricing plans available:

Slack Free ($0/free forever): For small teams who want to start collaborating at no cost with essential tools and basic AI features.
Slack Pro ($8.75/user/month or $7.25/user/month when paid annually): Best for small to medium teams that need unlimited history, integrations, and secure collaboration.
Slack Business+ ($18/user/month or $15/user/month when paid annually): Suitable for growing organizations that need advanced AI capabilities, stronger security, and enterprise-grade reliability.
Slack Enterprise+ (Contact Slack for pricing): For very large businesses with complex structures that require enterprise-grade AI, advanced compliance, and centralized administration.

Slack Free Plan – $0 (Forever Free)

The Free plan is perfect for small teams or startups just beginning their collaboration journey. It offers the essential communication tools needed to stay connected without any financial commitment. With limited history and integrations, it’s a no-risk way to test Slack before upgrading to a paid plan for scalability and more advanced capabilities.

Included in Free:

90 Days of Message History: Store and access up to 90 days of past conversations. This ensures small teams keep track of key discussions without getting overwhelmed by years of backlog. It’s enough to manage projects, but it encourages upgrading when teams scale.
Up to 10 Apps: Integrate up to 10 essential apps such as Google Drive, Zoom, or Trello. This gives teams a functional toolkit to manage work without overcomplicating workflows. Beyond 10, teams must consider Pro for scalability.
1:1 Meetings: Host one-on-one meetings directly in Slack, whether for check-ins, mentoring, or quick decision-making. This keeps small teams aligned without needing a separate meeting platform. Larger groups require higher plans.
1:1 External Messages: Communicate directly with one external contact per person. Ideal for client touchpoints, freelancers, or partners. While limited, it provides just enough flexibility to test collaboration beyond the team before scaling to paid tiers.

Slack Pro Plan (Starts at $8.75/user/month)

The Pro plan is built for small to medium-sized teams ready to move beyond basic collaboration. It removes the limits of the Free plan and unlocks advanced features that make teamwork smoother and more efficient. Ideal for businesses that need complete access to their history, unlimited integrations, and group-level collaboration tools.

Everything in Free plus:

Unlimited Message History: Access every conversation your team has ever had in Slack. Nothing disappears after 90 days, ensuring continuity, accountability, and reference for ongoing or long-term projects. Perfect for teams managing complex discussions over time.
Unlimited App Integrations: Connect as many apps as you need without restrictions. From project management to CRM tools, this flexibility allows growing teams to create a seamless digital workspace tailored to their workflow.
Group Meetings: Host audio or video meetings with multiple participants. This expands beyond one-on-one check-ins, enabling team-wide discussions, project updates, or brainstorming sessions directly inside Slack.
Group External Messages: Collaborate with multiple people outside your organization in the same conversation. Ideal for agencies, clients, or vendors who need streamlined communication without switching platforms.
Basic AI: Get AI-powered assistance to simplify work and save time. From summarizing long threads to helping automate small tasks, Basic AI improves productivity without the complexity of enterprise-grade AI tools.
AI Conversation Summaries: Automatically generate concise summaries of long Slack discussions. This feature ensures every team member stays on track without rereading hundreds of messages. It saves time, reduces misunderstandings, and speeds up decision-making.

Slack Business+ Plan (Starts at $18/user/month)

The Business+ plan is designed for growing organizations that demand more power, security, and intelligence in their workflows. It goes beyond the Pro plan with advanced AI features, stronger admin controls, and enterprise-grade compliance. Ideal for businesses scaling rapidly, managing multiple teams, or requiring higher levels of security and efficiency.

Everything in Pro plus:

Unlimited Message History: Every conversation, decision, and idea remains permanently accessible. Teams never lose important context, enabling continuity, accountability, and smarter decision-making even as organizations expand rapidly.
Unlimited App Integrations: Build a fully connected digital workspace. Integrate CRMs, project management platforms, analytics, or support tools, streamlining collaboration and eliminating workflow silos across departments.
Group Meetings: Run larger team meetings seamlessly inside Slack. Ideal for company-wide syncs, cross-functional discussions, and important updates without juggling multiple external meeting platforms.
Group External Messages: Collaborate with clients, vendors, or partners directly in Slack channels. Maintain professional communication, improve transparency, and minimize reliance on scattered email threads.
Advanced AI: Unlock enterprise-level intelligence with AI that generates insights, streamlines workflows, and powers automation. Designed to support complex operations and reduce time wasted on repetitive tasks.
AI Conversation Summaries: Summarize lengthy conversations into clear, actionable highlights. Perfect for leaders or teams who need quick updates without reading through hundreds of messages.
AI Workflow Generation: Automate routine tasks such as reminders, approvals, and task assignments. AI ensures global teams maintain productivity without bottlenecks or excessive manual work.
AI Search: Find information instantly with context-aware, intelligent search. Messages, files, and channel content are easier to locate, helping teams save time and focus on execution.
AI Daily Recaps: Get automated recaps of the day’s key discussions. Keeps managers, leaders, and teams aligned, avoiding missed updates or critical action items.
AI File Summaries: Quickly pull insights from lengthy documents. Teams save time by focusing only on the most important points instead of scanning entire files.
SAML-Based Single Sign-On (SSO): Enhance security and simplify authentication with enterprise-grade access control. Protect sensitive company data while making login seamless for employees.
SCIM User Management: Automate provisioning and de-provisioning of users across large teams. Simplifies IT workloads and ensures access rights remain compliant as organizations scale quickly.

Slack Enterprise+ Plan (Contact for Pricing)

The Enterprise+ plan is built for very large organizations with complex structures, advanced compliance needs, and global-scale operations. It delivers enterprise-grade AI, security, and administrative control far beyond lower-tier plans. Perfect for corporations, government agencies, or multinationals requiring maximum reliability, compliance, and streamlined collaboration across thousands of users.

Everything in Business+ plus:

Unlimited Message History: Store every message without restrictions, ensuring long-term accountability, compliance, and knowledge retention across massive teams. Ideal for enterprises needing permanent access to past conversations and secure organizational memory.
Unlimited App Integrations: Connect unlimited business-critical apps into Slack to centralize workflows. From HR to finance, enterprises streamline processes by integrating their most important tools in one secure workspace.
Group Meetings: Host larger meetings seamlessly within Slack. Support for multiple participants enables real-time collaboration across departments, regions, and subsidiaries without relying heavily on external meeting software.
Group External Messages: Collaborate securely with multiple external partners, clients, or vendors. Enterprises maintain professional communication outside their organization while ensuring security, compliance, and streamlined workflows across distributed teams.
Enterprise-Grade AI: Advanced AI built for scale provides smarter automation, improved insights, and reliable performance. Tailored for enterprises handling complex operations, compliance requirements, and high-volume collaborative needs.
AI Conversation Summaries: Instantly summarize long discussion threads, saving leaders and managers from reading through thousands of messages. Helps decision-makers quickly grasp essential context across teams and departments.
AI Workflow Generation: Automate repetitive or multi-step tasks across enterprise systems. AI-generated workflows boost efficiency and minimize manual work, ensuring global teams operate at peak productivity.
Enterprise Search: Enhanced AI-powered search retrieves information across millions of messages, channels, and files. Designed for large organizations that require precise, contextual, and fast results across multiple teams.
AI Daily Recaps: Get concise AI-generated recaps of daily activities across the organization. Keeps executives, managers, and team leads aligned without needing to review every conversation.
AI File Summaries: Automatically generate summaries of lengthy documents. Saves hours of reading time while ensuring executives and employees can quickly extract the most relevant points for decision-making.
Multiple SAML Configurations: Supports multiple identity providers for smoother authentication across global subsidiaries. Enterprises gain flexibility and secure access management tailored to their complex organizational structure.
SCIM User Management: Automates user provisioning and de-provisioning. Ensures employees are granted or revoked access quickly, helping IT teams maintain compliance and protect sensitive business data.
EMM Integration Support: Enterprise Mobility Management integrations keep mobile use secure. Enterprises control access on employee devices while safeguarding confidential data across large, distributed workforces.
Native Data Loss Prevention (DLP): Built-in DLP tools prevent sensitive data leaks. Enterprises in regulated industries maintain compliance by controlling how confidential information is shared across Slack.

Conclusion

Slack continues to be one of the most powerful collaboration platforms for teams of all sizes. With flexible pricing tiers, it allows small startups to get started at no cost, while scaling to meet the needs of large enterprises with advanced AI and compliance capabilities. Choosing the right plan depends on your team’s size, workflow demands, and security requirements.

While Slack can greatly improve productivity and streamline communication, it’s important to weigh its benefits against potential drawbacks like notification overload. If you’re still unsure whether Slack fits your business needs, check our Slack Pros and Cons article for a deeper breakdown. By comparing plans carefully, you can invest in the right solution to drive efficiency and long-term growth.