Slack vs Zendesk
On the evidence we track, Slack leads this comparison with a composite score of 79/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.
Features
The capabilities each product documents. These tools do not share a category taxonomy, so this aligns what each vendor states rather than a normalised feature set.
| Feature | Slack | Zendesk |
|---|---|---|
| Ai agent | - | ✓ |
| Api access | ✓ | - |
| App marketplace | ✓ | - |
| Automated workflow bot builders | ✓ | - |
| Automation macros | - | ✓ |
| Channel based topic organization | ✓ | - |
| Compliance controls | ✓ | - |
| Deployment model | cloud_saas | cloud_managed_saas |
| Free tier | - | ✓ |
| Guest external access | ✓ | - |
| Hosting | cloud | cloud |
| Knowledge base | - | ✓ |
| Live chat | - | ✓ |
| Messaging | ✓ | - |
| Omnichannel | - | ✓ |
| Recording transcription | recording_ai_notes | - |
| Reporting dashboards | - | ✓ |
| Robust message search and history indexing | ✓ | - |
| Sso scim | ✓ | - |
| Threaded reply conversations | ✓ | - |
| Ticketing | - | ✓ |
| Video meetings | ✓ | - |
| Voice telephony | - | ✓ |
What each one is
The product in its own terms, so the numbers below have context.
Slack
LeaderSlack is a cloud-based system that enables teams to communicate through channels, integrate with external tools, and automate workflows while maintaining enterprise-grade security and compliance controls.
Zendesk
A cloud platform that deploys AI agents to handle customer and employee service requests. Agents improve with each interaction, manage high volumes autonomously, and operate across voice and digital channels without requiring technical configuration.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
Slack
LeaderFrom £0 (free tier) to £7/user/month (Pro). Free tier available.
- FreeFree
- 90 days of message history
- Up to 10 apps from Slack App Directory
- 1:1 audio and video meetings with screen sharing
- 1:1 external messages via Slack Connect
- SAML-based single sign-on
- +9 more
- Pro£7/user/month (£5.75/user/month billed annually)
- Unlimited message history
- Unlimited app integrations
- 2,600+ apps in Slack App Directory
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
Slack
Leader- Salesforce
- Atlassian
- Lucid
- Loom
- Miro
- Smartsheet
- Mural
- Zapier
- Microsoft 365
- Jira
- GitHub
- Google Workspace
- Okta
- ADFS
- Zendesk
Zendesk
Not documented yet.
Slack or Zendesk: which one depends on you
A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.
Free to run, no account needed to start. How the evaluation works
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.