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Live Chat & Chatbots · head to head

Rasa vs Zendesk Answer Bot

Rasa logo

Rasa

Live Chat & Chatbots

Open-source framework for building conversational AI

From
Free
Rated
-
Full reviewWebsite
Zendesk Answer Bot logo

Zendesk Answer Bot

Live Chat & Chatbots

AI-powered chatbot for automated customer support

From
$55/month per agent
Rated
-
Full reviewWebsite

The short version

  • Only Rasa has a free tier, so it costs nothing to try first.
  • Each has a real cost: Rasa free Developer Edition caps conversations at 1,000 external or 100 internal per company per month; Zendesk Answer Bot limited to Help Center articles only; cannot access customer account data, billing information, or external systems
  • They diverge on capability: Rasa covers NLU engine, Zendesk Answer Bot covers AI chatbot.

Where they differ

Only the attributes on which Rasa and Zendesk Answer Bot actually diverge.

Attributes where Rasa and Zendesk Answer Bot differ
AttributeRasaZendesk Answer Bot
Starting priceFree$55/month per agent
Pricing modelopen-sourceUnknown
Free tierYesNo
PlatformsOn-premise, Cloud deployment, Docker, KubernetesWeb, Email, Slack, Mobile
Founded20162007

Identical on both: user rating (Not yet rated), category (Live Chat & Chatbots).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Rasa

  • NLU engine
  • Dialogue management
  • Testing tools
  • Teams
  • Custom channels
  • On-premise support
  • Cloud deployment support
  • Docker support

Only in Zendesk Answer Bot

  • AI chatbot
  • Knowledge base integration
  • Intent recognition
  • Zendesk Support
  • Zendesk Chat
  • Web support
  • Mobile support
  • Messaging apps support

Both cover

  • Multi-language support
  • Slack
  • API

What people use each for

The jobs each tool is most often brought in to do.

Rasa

  • Developers self-hosting an open source conversational AI framework before needing enterprise scalenot Zendesk Answer Bot

Zendesk Answer Bot

  • Customer engagementnot Rasa
  • Lead generationnot Rasa
  • Customer supportnot Rasa
  • Sales automationnot Rasa

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Rasa

  • Free Developer Edition caps conversations at 1,000 external or 100 internal per company per month
  • Rasa Pro and the Business Plan (Pro plus Studio) are not priced on the site and require contacting sales

Zendesk Answer Bot

  • Limited to Help Center articles only; cannot access customer account data, billing information, or external systems
  • Fixed timeout limits on API calls prevent lookups to external systems from completing
  • Does not perform actions like refunds or account updates; only suggests documentation
  • Uses keyword matching rather than true natural language understanding, leading to mismatched suggestions on complex queries

Pricing, plan by plan

Rasa

Free
  • Open SourceFree
    • Full framework access
    • Community support
  • Rasa Pro$50/month
    • Additional tools
    • Priority support
  • Enterprise$undefined/month
    • Advanced features
    • Dedicated support

Zendesk Answer Bot

$55/month per agent
  • Suite Team$55/month per agent
    • Answer Bot included
  • Suite Growth$89/month per agent
    • Answer Bot included
  • Suite Professional$115/month per agent
    • Answer Bot included

Which should you pick?

Choose Rasa if

  • You need nlu engine.
  • You want to start without paying.
  • You work on On-premise, Cloud deployment, Docker, Kubernetes.
  • You also want dialogue management.
Rasa review

Choose Zendesk Answer Bot if

  • You need ai chatbot.
  • You work on Web, Email, Slack, Mobile.
  • You also want knowledge base integration.
Zendesk Answer Bot review

Questions people ask

Is Rasa or Zendesk Answer Bot better?
Neither clearly leads. Rasa starts at Free and Zendesk Answer Bot at $55/month per agent, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Rasa or Zendesk Answer Bot?
Rasa has a free tier; the other does not. Paid plans start at Free for Rasa and $55/month per agent for Zendesk Answer Bot.
Does Rasa or Zendesk Answer Bot run on more platforms?
Rasa runs on On-premise, Cloud deployment, Docker, Kubernetes. Zendesk Answer Bot runs on Web, Email, Slack, Mobile.
Can I use Rasa for free?
Yes. Rasa has a free tier, so you can try it without paying. Zendesk Answer Bot starts at $55/month per agent.
What is Rasa best used for?
Rasa is most often used for developers self-hosting an open source conversational ai framework before needing enterprise scale. Of those, developers self-hosting an open source conversational ai framework before needing enterprise scale is not what Zendesk Answer Bot is typically brought in for.
What can Rasa do that Zendesk Answer Bot cannot?
Rasa covers NLU engine, Dialogue management, Testing tools, Teams. Zendesk Answer Bot covers AI chatbot, Knowledge base integration, Intent recognition, Zendesk Support. Both handle Multi-language support, Slack, API.

Answered from the vendors’ own pages

Zendesk Answer Bot: Is Answer Bot included in my Zendesk plan?

Answer Bot functionality is now part of Zendesk AI agents included in Suite and Support plans, though Advanced AI features require the Advanced AI add-on. Legacy Essential tier Answer Bot was sunset on December 31, 2026.

Source
Zendesk Answer Bot: What channels does Answer Bot support?

Answer Bot works in email autoresponses, Slack channels (free feature for Guide Enterprise or Professional plans), and the web widget. For Slack, it listens to selected channels and suggests relevant Help Center articles to users.

Source
Zendesk Answer Bot: Does Answer Bot generate complete answers or just suggest articles?

Classic Answer Bot primarily suggests articles from your Help Center that might solve the issue, leaving the customer to read the article themselves. It does not generate a full response or summarize the article content.

Source
Zendesk Answer Bot: How is Answer Bot usage billed?

As of 2026, Zendesk charges for AI agent features using an automated resolutions model rather than monthly active users. The specific per-resolution pricing varies by plan and was transitioning during 2026.

Source
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