Five9 vs Slack
Compare Five9 and Slack on features, pricing, and buyer fit using the same researched criteria.
Five9
Cloud contact center (CCaaS) — Digital from $119/concurrent seat/mo; Core $159; Plus/Pro/Enterprise quote — 50-seat minimum.
Best for
- • Mid-market and enterprise contact centres that need blended dialer strength
- • Teams comfortable with concurrent-seat economics and 50+ seat minimums
- • Buyers who want CRM/UC adapter choice inside CCaaS
Starting from $119.00/user/mo
No free plan
VS
Our verdict
No universal winner. Choose based on which criteria matter most for your team.
Five9 is better for
- ✓ Number / country coverage
- ✓ Power dialer
- ✓ WhatsApp Business
- ✓ Routing & IVR
Slack is better for
- ✓ CRM / CTI integrations
Tie
- • AI features
Choose Five9 if: Mid-market and enterprise contact centres that need blended dialer strength
Choose Slack if: Knowledge-worker teams that need channel-based team messaging as the primary collaboration hub
Slack
Channel-based team messaging platform — Free $0, Pro $7.25/user/month annual, Business+ $15, Enterprise+ contact sales; huddles for light video, not a phone system.
Best for
- • Knowledge-worker teams that need channel-based team messaging as the primary collaboration hub
- • Organisations that want a freemium chat workspace with a deep app ecosystem
- • Salesforce-centric companies aligning chat with CRM workflows
Starting from $7.25/user/mo
Free plan available
Five9 vs Slack pricing
Five9 researched starting price from $119/mo. Slack researched starting price from $7.25/mo; a free plan is researched. Affiliate economics excluded.
Five9
From $119.00/user/mo
Slack
From $7.25/user/mo
Five9
Starting from $119.00/user/mo
No free trial evidenced
- Digital$119.00/user/mo
- $119/concurrent seat/month — digital channels only (chat, email, SMS/MMS, social). 50-seat minimum.
- CorePopular$159.00/user/mo
- $159/concurrent seat/month — all channels with AI essentials, dialer, recording, CRM/UC adapter choice. 50-seat minimum.
- PlusCustom
- All channels with advanced AI — contact sales; no public seat dollars (2026-08-17).
- ProCustom
- All channels with AI essentials + WEM — contact sales.
- EnterpriseCustom
- All channels with advanced AI + full WEM — contact sales.
Slack
Starting from $7.25/user/mo
No free trial evidenced
- Free$0.00/user/mo
- $0 — limited message/file history and core channel messaging. Primary evaluation path (no published free trial on paid plans).
- ProPopular$7.25/user/mo
- $7.25/user/month billed annually ($8.75 monthly). Unlimited message history, huddles, canvas and core productivity features for growing teams.
- Business+$15.00/user/mo
- $15/user/month billed annually ($18 monthly). Stronger admin, compliance and AI assistance versus Pro.
- Enterprise+Custom
- Contact sales for Enterprise+ security, compliance and large-org controls.
Estimate your team cost
Monthly estimate from verified per-seat list pricing. Confirm on the vendor site before purchasing.
Five9
$1,785.00/mo
Slack
$108.75/mo
+$1,676.25/mo — Five9 costs more
Verified monthly unit prices · Aug 17, 2026
Prices in USD
Shown per user / month from verified list pricing.
Plans can change
Confirm live vendor rates before purchasing.
Add-ons may apply
Calling, SMS, or usage fees can add cost.
Independence
Affiliate status never changes pricing outcomes.
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