respond.io vs Slack
Compare respond.io and Slack on features, pricing, and buyer fit using the same researched criteria.
respond.io
Omnichannel customer messaging platform (WhatsApp + other channels) with shared inbox and AI — Starter from $79/month annual-equivalent.
Best for
- • Support and growth teams that need WhatsApp plus other messaging channels in one inbox
- • Organisations running broadcasts and workflow automation across channels
- • Buyers who want AI Agents inside an omnichannel messaging platform
Starting from $79.00/user/mo
No free plan
VS
Our verdict
No universal winner. Choose based on which criteria matter most for your team.
respond.io is better for
- ✓ Power dialer
- ✓ WhatsApp Business
- ✓ Routing & IVR
- ✓ Analytics
Slack is better for
- ✓ CRM / CTI integrations
Tie
- • Number / country coverage
Choose respond.io if: Support and growth teams that need WhatsApp plus other messaging channels in one inbox
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
respond.io vs Slack pricing
respond.io researched starting price from $79/mo. Slack researched starting price from $7.25/mo; a free plan is researched. Affiliate economics excluded.
respond.io
From $79.00/user/mo
Slack
From $7.25/user/mo
respond.io
Starting from $79.00/user/mo
Free trial available
- Starter$79.00/mo
- $79/month on yearly billing ($948/yr). Team & custom inboxes, AI Prompt/Assist, basic reports — omnichannel messaging entry.
- GrowthPopular$159.00/mo
- $159/month yearly ($1,908/yr). Broadcasts, workflow automation, AI Agents, advanced reports, Zapier/Make and developer API.
- Advanced$279.00/mo
- $279/month yearly ($3,348/yr). Multiple workspaces, SSO, webhooks, custom channels and advanced security.
- EnterpriseCustom
- Custom packaging — unlimited users, higher workspace/API limits. 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.
respond.io
$1,185.00/mo
Slack
$108.75/mo
+$1,076.25/mo — respond.io 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.
Some visit links may be affiliate links — we may earn a commission at no extra cost to you. Comparison outcomes are never based on commission.