OpenPhone vs Slack
Compare OpenPhone and Slack on features, pricing, and buyer fit using the same researched criteria.
OpenPhone
Modern SMB shared business phone (also branded Quo) with shared numbers, SMS and Sona AI — Starter from $15/user/month annual.
Best for
- • SMB teams that want a modern shared business number with SMS and AI answering
- • Founders and small sales/support teams who need transparent per-seat pricing without a 3-licence floor
- • Teams standardising on HubSpot/Salesforce once they move to Business
Starting from $15.00/user/mo
No free plan
VS
Our verdict
No universal winner. Choose based on which criteria matter most for your team.
OpenPhone is better for
- ✓ Number / country coverage
- ✓ Power dialer
- ✓ Routing & IVR
- ✓ Analytics
Slack is better for
- ✓ CRM / CTI integrations
Tie
- • WhatsApp Business
- • AI features
Choose OpenPhone if: SMB teams that want a modern shared business number with SMS and AI answering
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
OpenPhone vs Slack pricing
OpenPhone researched starting price from $15/mo. Slack researched starting price from $7.25/mo; a free plan is researched. Affiliate economics excluded.
OpenPhone
From $15.00/user/mo
Slack
From $7.25/user/mo
OpenPhone
Starting from $15.00/user/mo
Free trial available
- Starter$15.00/user/mo
- $15/user/month billed annually ($19 monthly). Shared business number, unlimited US/CA calling & SMS (fair use), voicemail transcripts, Sona AI baseline.
- BusinessPopular$23.00/user/mo
- $23/user/month annual ($33 monthly). Adds phone menus, automatic recording, AI summaries/transcripts on all calls, and deeper HubSpot/Salesforce CRM.
- Scale$35.00/user/mo
- $35/user/month annual ($47 monthly). AI call tags, dedicated onboarding and phone support for larger SMB rollouts.
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.
OpenPhone
$225.00/mo
Slack
$108.75/mo
+$116.25/mo — OpenPhone 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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