Softwr

Database & Data Management · head to head

Convex vs ClickHouse

C

Convex

Database & Data Management

The reactive backend platform that keeps up with you and your agents

From
On request
Rated
-
Full reviewWebsite
ClickHouse logo

ClickHouse

Database & Data Management

Fast open-source column-oriented database for real-time analytics

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only ClickHouse has a free tier, so it costs nothing to try first.
  • Each has a real cost: Convex the Free and Starter tier includes only 1 million function calls and 0.5 GB of database storage per month before per-unit overage charges of $2.20 per million calls apply, as of August 2026.; ClickHouse limited multi-row atomic transactions and expensive UPDATE/DELETE operations unsuitable for transactional systems

Where they differ

Only the attributes on which Convex and ClickHouse actually diverge.

Attributes where Convex and ClickHouse differ
AttributeConvexClickHouse
Starting priceOn requestFree
Pricing modelusage-basedUnknown
Free tierNoYes
PlatformsWebLinux, macOS, Windows (via Docker)
FoundedUnknown2021

Identical on both: user rating (Not yet rated), category (Database & Data Management).

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 Convex

Nothing recorded that ClickHouse does not also cover.

Only in ClickHouse

  • Column-oriented Storage
  • Real-time Analytics
  • SQL Support
  • Linear Scalability
  • Data Compression
  • Vectorized Query Execution
  • Approximate Calculations
  • Kafka

What people use each for

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

Convex

No use cases recorded yet. See the Convex review.

ClickHouse

  • Business intelligencenot Convex
  • Data warehousingnot Convex
  • Real-time analyticsnot Convex
  • Reportingnot Convex
  • Machine learningnot Convex

Where each one falls short

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

Convex

  • The Free and Starter tier includes only 1 million function calls and 0.5 GB of database storage per month before per-unit overage charges of $2.20 per million calls apply, as of August 2026.

ClickHouse

  • Limited multi-row atomic transactions and expensive UPDATE/DELETE operations unsuitable for transactional systems
  • Requires upfront schema design discipline with MergeTree engine choices and sort/partition keys
  • Experimental vector search support, not production-ready for vector operations
  • Different query syntax from standard SQL requiring migration planning
  • Limited JOIN capabilities compared to traditional relational databases
  • Migration complexity with 2-4 weeks estimated for data type mapping and query translation

Pricing, plan by plan

Convex

On request

No published plan breakdown. See the Convex review.

ClickHouse

Free

No published plan breakdown. See the ClickHouse review.

Which should you pick?

Choose Convex if

Nothing in the data separates Convex from ClickHouse on the points above - pick on price and on how each one feels to use.

Convex review

Choose ClickHouse if

  • You need column-oriented storage.
  • You want to start without paying.
  • You work on Linux, macOS, Windows (via Docker).
  • You also want real-time analytics.
ClickHouse review

Questions people ask

Is Convex or ClickHouse better?
Neither clearly leads. Convex starts at On request and ClickHouse at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Convex or ClickHouse?
ClickHouse has a free tier; the other does not. Paid plans start at On request for Convex and Free for ClickHouse.
Does Convex or ClickHouse run on more platforms?
Convex runs on Web. ClickHouse runs on Linux, macOS, Windows (via Docker).
Can I use ClickHouse for free?
Yes. ClickHouse has a free tier, so you can try it without paying. Convex starts at On request.
What can Convex do that ClickHouse cannot?
ClickHouse covers Column-oriented Storage, Real-time Analytics, SQL Support, Linear Scalability.

Answered from the vendors’ own pages

ClickHouse: What is ClickHouse best used for?

ClickHouse is optimized for analytical workloads on large datasets. It excels at fast aggregations and queries, being 10-100x faster than PostgreSQL on large aggregations.

Source
ClickHouse: Does ClickHouse support transactions?

ClickHouse has limited transaction support and expensive UPDATE/DELETE operations. It is not suitable for transactional workloads requiring strict ACID guarantees.

Source
ClickHouse: How does ClickHouse compare to PostgreSQL?

ClickHouse is 10-100x faster for analytics but PostgreSQL is better for transactional workloads. Many teams use both: PostgreSQL for writes via MaterializedPostgreSQL replication to ClickHouse for analytics.

Source
ShareXLinkedInRedditWhatsAppEmail

Related pages

More on Convex

More on ClickHouse

Keep looking

Other head to heads