The team messaging standard — essential infrastructure, expensive at enterprise scale
What Slack costs, how it compares to similar Project Management & Collaboration tools on price positioning, and every documented billing complaint that's shaped its reputation.
Slack is the leading team messaging and collaboration platform, acquired by Salesforce in 2021 for $27.7 billion. Pricing includes a free tier (90-day message history), Pro at $7.25/user/month, Business+ at $12.50/user/month, and Enterprise Grid at custom pricing.
Pricing details are drawn from our editorial research and may change — always confirm current rates on slack.com before buying.
This isn't a feature-by-feature price comparison — it's a positioning check against other Project Management & Collaboration tools we track, based on documented complaint volume and risk profile.
| Product | Risk Score | Billing complaints | Positioning note |
|---|---|---|---|
| Slack (this product) | 54 · Caution | 2 | — |
| Trello | 7 · Clean Record | See pricing → | Lower overall risk profile — worth a look if pricing transparency matters to you Full comparison → |
| Basecamp | 8 · Clean Record | See pricing → | Lower overall risk profile — worth a look if pricing transparency matters to you Full comparison → |
| Notion | 9 · Clean Record | See pricing → | Lower overall risk profile — worth a look if pricing transparency matters to you Full comparison → |
Enterprise IT departments universally compare Slack's per-user cost against Microsoft Teams, which is included in Microsoft 365 subscriptions most enterprises already pay. The cost comparison frequently drives Teams adoption for budget-sensitive organizations.
Organizations on the free tier who exceed 90 days discover that message history before that window is inaccessible. Teams that use Slack as a de facto knowledge base face real information loss when old messages become unreachable.
Our AI scanner searches Reddit, Trustpilot, BBB, and news sources for fresh complaints from the past year, paraphrases what it finds, and adds anything new to this page. Takes up to 90 seconds.
Every billing, hidden-fee, and pricing-related complaint we've recorded for Slack — with sources.
Enterprise IT departments universally compare Slack's per-user cost against Microsoft Teams, which is included in Microsoft 365 subscriptions most enterprises already pay. The cost comparison frequently drives Teams adoption for budget-sensitive organizations.
Organizations on the free tier who exceed 90 days discover that message history before that window is inaccessible. Teams that use Slack as a de facto knowledge base face real information loss when old messages become unreachable.
We don't scrape live pricing pages — this page reflects documented pricing details from our editorial research and dated billing complaints from public sources. For current rates, always check the vendor's own pricing page.