True cost comparison — not just what the pricing page says
Quick Verdict
ClickUp saves you 25%
Best for ClickUp
Teams that need best-in-class real-time messaging and already use separate PM tools
Best for Slack
Teams wanting to consolidate messaging + PM + docs into one tool to reduce SaaS spend
All-in-one project management with docs, whiteboards, and goals. Free plan is ge...
Advertised
$10
/month
True Cost
$37
/month (typical)
Per-Seat Multiplication
10 users × $7/mo = $70/mo, not $7/mo. Per-seat pricing makes team growth expensive. The headline '$7...
AI Brain Add-on
ClickUp Brain AI is a SEPARATE add-on: $9/user/mo (1,500 credits) or $28/user/mo (5,000 credits). NO...
60MB Storage on Free
Free plan has only 60MB total storage — the most restrictive of any PM tool. A few file attachments ...
Automation Cap on Business
Business plan caps at 5,000 automations/month. No published overage rate — automations stop. Enterpr...
$7/mo annual
$12/mo annual
Affiliate link — we may earn a commission
Team messaging and collaboration hub. Free plan has a 90-day message history lim...
Advertised
$0
/month
True Cost
$8
/month (typical)
90-Day Message History Limit
Free plan deletes message access after 90 days. Your team's entire knowledge base disappears quarter...
Per-User Cost at Scale
A 100-person company on Pro pays $875/mo ($10,500/yr). Business+ is $1,250/mo ($15,000/yr). The per-...
Slack Connect External Channels
Connecting with external organizations requires Pro ($8.75/user/mo) minimum. Free plan has no extern...
$7/mo annual
Slack is messaging-first. ClickUp is project management with built-in chat — different primary functions
Slack Pro at $8.75/user/mo vs ClickUp Unlimited at $7/user/mo (annual) for full features
ClickUp includes docs, whiteboards, goals, and time tracking. Slack requires integrations for all of these
Slack has superior integrations ecosystem (2,000+ apps). ClickUp's native features reduce the need for integrations
| Metric | ClickUp | Slack | Winner |
|---|---|---|---|
| Advertised Price | $10/mo | $0/mo | Slack |
| True Monthly Cost | $37/mo | $8/mo | Slack |
| Hidden Fee Total | +$27/mo | +$8/mo | Slack |
| # Hidden Fees | 4 | 3 | Slack |
| Confidence Score | 76% | 83% | Slack |
| Pricing Tiers | 4 | 4 | — |
| Affiliate Program | 20% recurring | No public affiliate program | — |
Try the tool that fits your needs. Both offer free trials or free tiers.
From $10/mo
✓ Saves 25% on true costAffiliate link — we may earn a commission
ClickUp advertises $10/mo and Slack advertises $0/mo. However, when you include hidden fees, ClickUp has 4 documented hidden fees adding +$27/mo, while Slack has 3 hidden fees adding +$8/mo. Based on true cost, ClickUp is typically 25% cheaper.
ClickUp has 4 documented hidden fees: Per-Seat Multiplication, AI Brain Add-on, 60MB Storage on Free, Automation Cap on Business. These add approximately +$27/mo on top of the $10/mo advertised price.
Slack has 3 documented hidden fees: 90-Day Message History Limit, Per-User Cost at Scale, Slack Connect External Channels. These add approximately +$8/mo on top of the $0/mo advertised price.
Choose ClickUp if: Teams that need best-in-class real-time messaging and already use separate PM tools. Choose Slack if: Teams wanting to consolidate messaging + PM + docs into one tool to reduce SaaS spend. The right choice depends on your team size, usage volume, and which features you need most.
This comparison is based on manual research of official pricing pages, terms of service, and user reports. ClickUp data has a 76% confidence score and Slack has 83%. Prices were last verified in April 2026. For the most accurate estimate, enter your specific usage in our calculator.
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