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Kayako vs Rasa

Kayako logo

Kayako

Live Chat

Effortless customer service

From
$30/month
Rated
-
Full reviewWebsite
Rasa logo

Rasa

Live Chat

Open-source framework for building conversational AI

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Rasa has a free tier, so it costs nothing to try first.
  • Each has a real cost: Kayako the AI agent is billed at $1 per resolved ticket, so support cost scales with ticket volume rather than being a fixed subscription; Rasa free Developer Edition caps conversations at 1,000 external or 100 internal per company per month
  • They diverge on capability: Kayako covers Unified inbox, Rasa covers NLU engine.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Kayako and Rasa actually diverge.

Attributes where Kayako and Rasa differ
AttributeKayakoRasa
Starting price$30/monthFree
Pricing modelsubscriptionfreemium
Free tierNoYes
PlatformsWeb, Ios, AndroidOn-premise, Cloud deployment, Docker, Kubernetes
Founded20012016

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

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 Kayako

  • Unified inbox
  • Live chat
  • Help center
  • Customer journey
  • Automation
  • Reporting
  • Salesforce
  • Zapier

Only in Rasa

  • NLU engine
  • Dialogue management
  • Multi-language support
  • Testing tools
  • Teams
  • Custom channels
  • API
  • On-premise support

Both cover

  • Slack

What people use each for

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

Kayako

  • Help desk ticketing with a unified inbox and knowledge basenot Rasa
  • Resolving support tickets automatically with an AI agentnot Rasa

Rasa

  • Developers self-hosting an open source conversational AI framework before needing enterprise scalenot Kayako

Where each one falls short

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

Kayako

  • The AI agent is billed at $1 per resolved ticket, so support cost scales with ticket volume rather than being a fixed subscription
  • A resolution counts when the AI solves the issue without human involvement, so the definition of a billable event is set by the vendor's own system
  • No per agent monthly price is published for the full Kayako One platform
  • Full platform pricing requires talking to an expert

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

Pricing, plan by plan

Kayako

$30/month
  • Inbox$30/month
    • Email & live chat
    • Help center
    • Basic automation
  • Growth$60/month
    • Everything in Inbox
    • Customer journey
    • SLA management
  • Scale$100/month
    • Everything in Growth
    • Advanced reporting
    • Custom roles

Rasa

Free
  • Free Developer EditionFree
    • One bot per company
    • Up to 1,000 external conversations per month or 100 internal conversations per month
    • Free Rasa license for local or production use
  • Rasa Pro$undefined/mo
    • Pro-code framework with CALM dialogue understanding
    • Language-agnostic NLU, enterprise search, multi-LLM management
    • Kubernetes support
  • Enterprise$undefined/mo
    • Full access to Rasa Platform and Premium Support
    • 24/7/365 support with Customer Success Manager
    • Business reviews and guidance

Which should you pick?

Choose Kayako if

  • You need unified inbox.
  • You work on Web, Ios, Android.
  • You also want live chat.
Kayako review

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

Questions people ask

Is Kayako or Rasa better?
Neither clearly leads. Kayako starts at $30/month and Rasa at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Kayako or Rasa?
Rasa has a free tier; the other does not. Paid plans start at $30/month for Kayako and Free for Rasa.
Does Kayako or Rasa run on more platforms?
Kayako runs on Web, Ios, Android. Rasa runs on On-premise, Cloud deployment, Docker, Kubernetes.
Can I use Rasa for free?
Yes. Rasa has a free tier, so you can try it without paying. Kayako starts at $30/month.
What is Kayako best used for?
Kayako is most often used for help desk ticketing with a unified inbox and knowledge base, resolving support tickets automatically with an ai agent. Of those, help desk ticketing with a unified inbox and knowledge base and resolving support tickets automatically with an ai agent are not what Rasa is typically brought in for.
What can Kayako do that Rasa cannot?
Kayako covers Unified inbox, Live chat, Help center, Customer journey. Rasa covers NLU engine, Dialogue management, Multi-language support, Testing tools. Both handle Slack.

Answered from the vendors’ own pages

Kayako: How much does Kayako charge?

Kayako uses results-based pricing where customers pay $1 per resolved ticket when Kay AI Agent solves the issue without human intervention. There are no seat fees or setup fees. Kayako One helpdesk platform pricing requires contacting sales.

Source
Rasa: Does Rasa offer a free version?

Yes. Rasa offers a free Developer Edition with one bot per company, up to 1,000 external conversations per month, and free community support.

Source
Kayako: What counts as a resolved ticket for Kayako pricing?

A resolution occurs when Kay solves the customer's issue without human agent involvement, whether by taking action or providing an answer the customer confirms solves their problem. Escalations to humans and simple deflections do not count.

Source
Rasa: What support is included with Rasa's free tier?

The free tier includes community forum support with responses from Rasa community members. Paid tiers add premium support with enhanced response times.

Source
Kayako: What is Kayako's AI resolution rate?

Kayako reports a 68 percent AI resolution rate for Kay AI Agent. The platform claims a cost advantage of $1 per resolution versus $4.60 for competitors, with reported CSAT improvement of 14 points.

Source
Rasa: What is the difference between Rasa Pro and Enterprise?

Rasa Pro includes the pro-code framework with advanced NLU and multi-LLM management. Enterprise adds full platform access, 24/7 support, dedicated Customer Success Manager, and business reviews.

Source
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