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Zendesk vs Sierra

Zendesk: Customer service suite with ticketing, AI agents and agent copilot features. Sierra: Conversational AI agent platform for brands to handle customer service in chat and voice. Here is how they compare on features, pricing, platforms, pros and cons.

Quick verdict

Zendesk

Best for: Support teams of any size that need a proven helpdesk.

Stands out for: Mature and very flexible; Huge app marketplace.

Sierra

Best for: Large consumer brands automating customer conversations.

Stands out for: Agents can complete tasks, not just answer; Works in chat and voice.

Side-by-side comparison

Comparison of Zendesk, Sierra
Visit zendesk.com (opens in a new tab)Visit sierra.ai (opens in a new tab)
What it isCustomer service suite with ticketing, AI agents and agent copilot features.Conversational AI agent platform for brands to handle customer service in chat and voice.
Pricing
Free trial
Paid
Free to useNoNo
CategoryAI Customer SupportAI Customer Support
Editor rank#2 in category#10 in category
Made byZendeskSierra
Best forSupport teams of any size that need a proven helpdesk.Large consumer brands automating customer conversations.
Key features
  • Omnichannel ticketing
  • AI agents for self-service
  • Agent copilot for suggested replies
  • Help center and reporting
  • AI agents that take real actions
  • Chat and voice channels
  • Brand voice and policy controls
  • Quality monitoring
Pros
  • Mature and very flexible
  • Huge app marketplace
  • Agents can complete tasks, not just answer
  • Works in chat and voice
Cons
  • Can be complex to set up
  • Built for enterprises; no self-serve plan
Use it to
  • Manage email and chat tickets in one place
  • Let AI answer simple questions
  • Summarise a long ticket for a colleague
  • Let customers change a booking by chat
  • Handle routine calls with a voice agent
  • Keep answers within company policy
Web app
iPhone & iPad
Android
API

Zendesk vs Sierra: questions

Is Zendesk better than Sierra?

Neither wins for everyone. Our editors rank Zendesk slightly higher overall in AI Customer Support, but Sierra can be the better fit: Large consumer brands automating customer conversations.

Which is free, Zendesk or Sierra?

Neither has an ongoing free plan: Zendesk is free trial and Sierra is paid.

Can I use Zendesk and Sierra together?

Yes. Many people keep both and pick per task, for example manage email and chat tickets in one place with Zendesk, and let customers change a booking by chat with Sierra.

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