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Customer Support · head to head

Kustomer vs Postgres

Kustomer logo

Kustomer

Customer Support

The future of customer service

From
On request
Rated
-
Full reviewWebsite
Postgres logo

Postgres

Technology

The world's most advanced open source database

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Postgres has a free tier, so it costs nothing to try first.
  • Each has a real cost: Kustomer pricing not published; requires customised sales assessment and quote for exact costs; Postgres each major version is supported for only 5 years after its initial release, after which it is end-of-life
  • They diverge on capability: Kustomer covers Unified customer view, Postgres covers ACID compliance.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Kustomer and Postgres actually diverge.

Attributes where Kustomer and Postgres differ
AttributeKustomerPostgres
Starting priceOn requestFree
Pricing modelquoteopen-source
Free tierNoYes
PlatformsWeb, CloudLinux, Windows, Macos, Docker
CategoryCustomer SupportTechnology
Founded20151996

Identical on both: user rating (Not yet rated).

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 Kustomer

  • Unified customer view
  • AI automation
  • Omnichannel
  • Workflow automation
  • Knowledge base
  • Analytics
  • Shopify
  • Magento

Only in Postgres

  • ACID compliance
  • Complex queries
  • Foreign keys
  • Triggers
  • Views
  • Stored procedures
  • JSON/JSONB support
  • Full-text search

What people use each for

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

Kustomer

  • Large B2C and B2B organisations managing 600+ customer support interactions across omnichannel platformsnot Postgres
  • Retail, financial services, travel and hospitality sectors requiring integrated AI-powered supportnot Postgres
  • Enterprises seeking customer 360 views and advanced workflow automationnot Postgres

Postgres

  • Running a general purpose relational database for applicationsnot Kustomer
  • Self-hosting an open source SQL database with no licence feenot Kustomer
  • Workloads needing extensions, JSON and full text search in one enginenot Kustomer

Where each one falls short

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

Kustomer

  • Pricing not published; requires customised sales assessment and quote for exact costs
  • Voice (call), SMS, and WhatsApp support operate on separate pay-as-you-go pricing models
  • Customisation-based pricing structure means no transparent cost comparison with competitors

Postgres

  • Each major version is supported for only 5 years after its initial release, after which it is end-of-life
  • Major version upgrades break on-disk compatibility and require a full dump and reload or the pg_upgrade tool
  • New major versions ship about once a year, so staying supported means a disruptive upgrade cycle
  • Minor releases contain only frequently-encountered bug fixes, low-risk fixes, security issues and data corruption fixes, so feature gaps are not addressed within a major version
  • There is no vendor SLA; commercial support must be bought separately from third party professional services listed by the project

Pricing, plan by plan

Kustomer

On request

No published plan breakdown. See the Kustomer review.

Postgres

Free
  • Community EditionFree
    • Full database features
    • No limitations
    • Community support

Which should you pick?

Choose Kustomer if

  • You need unified customer view.
  • You work on Web, Cloud.
  • You also want ai automation.
Kustomer review

Choose Postgres if

  • You need acid compliance.
  • You want to start without paying.
  • You work on Linux, Windows, Macos, Docker.
  • You also want complex queries.
Postgres review

Questions people ask

Is Kustomer or Postgres better?
Neither clearly leads. Kustomer starts at On request and Postgres at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Kustomer or Postgres?
Postgres has a free tier; the other does not. Paid plans start at On request for Kustomer and Free for Postgres.
Does Kustomer or Postgres run on more platforms?
Kustomer runs on Web, Cloud. Postgres runs on Linux, Windows, Macos, Docker.
Can I use Postgres for free?
Yes. Postgres has a free tier, so you can try it without paying. Kustomer starts at On request.
What is Kustomer best used for?
Kustomer is most often used for large b2c and b2b organisations managing 600+ customer support interactions across omnichannel platforms, retail, financial services, travel and hospitality sectors requiring integrated ai-powered support, enterprises seeking customer 360 views and advanced workflow automation. Of those, large b2c and b2b organisations managing 600+ customer support interactions across omnichannel platforms and retail, financial services, travel and hospitality sectors requiring integrated ai-powered support are not what Postgres is typically brought in for.
What can Kustomer do that Postgres cannot?
Kustomer covers Unified customer view, AI automation, Omnichannel, Workflow automation. Postgres covers ACID compliance, Complex queries, Foreign keys, Triggers.

Answered from the vendors’ own pages

Kustomer: How much does Kustomer cost?

Kustomer uses a custom, quote-based pricing model and does not publish standard rates. Every CX team setup is different, so pricing varies based on company size, number of support agents, and monthly conversation volume.

Source
Postgres: How much does PostgreSQL cost to use?

PostgreSQL is completely free to download, install, and use. No licensing fees, subscription costs, or per-seat charges apply. The database is open source under the PostgreSQL License. Source: https://www.postgresql.org

Source
Kustomer: How do I get a Kustomer pricing quote?

Complete a 2-minute ROI calculator assessment that gathers information about your industry, company size, agent count, and monthly conversation volume. Results provide directional pricing estimates before sales connects with you.

Source
Postgres: Are there commercial PostgreSQL support options available?

Official PostgreSQL (the project) is free. Commercial PostgreSQL services such as hosting, professional support, training, and managed database services are offered by third-party vendors, not the PostgreSQL project itself. Source: https://www.postgresql.org

Source
Kustomer: Are there add-on costs for Kustomer features?

Yes, add-on services include HIPAA Enabled Subscription, implementation services, Voice, SMS, and WhatsApp support on a pay-as-you-go model.

Source
Postgres: Do I need a license to use PostgreSQL commercially?

No. PostgreSQL is open source under the PostgreSQL License, which permits free commercial use without royalties, licensing fees, or support obligations. Source: https://www.postgresql.org

Source
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