Is Dremio or PostgreSQL better?

Neither clearly leads. Dremio starts at Free and PostgreSQL at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Dremio or PostgreSQL?

Dremio starts at Free and PostgreSQL at Free.

Does Dremio or PostgreSQL run on more platforms?

Dremio runs on Linux, Kubernetes, Cloud, Docker. PostgreSQL runs on Linux, Windows, macOS, BSD, Unix.

Can I use Dremio for free?

Both have a free tier, so you can try either at no cost before committing.

What is Dremio best used for?

Dremio is most often used for a company with petabytes of parquet in s3 that wants bi dashboards without duplicating it into a warehouse, a data platform team standardising on apache iceberg and needing a sql engine plus catalogue that does not lock the tables in, an analytics group accelerating slow lake queries with reflections instead of hand-built aggregate tables, a regulated enterprise that must keep data on premises but wants a modern lakehouse sql layer. Of those, a company with petabytes of parquet in s3 that wants bi dashboards without duplicating it into a warehouse and a data platform team standardising on apache iceberg and needing a sql engine plus catalogue that does not lock the tables in are not what PostgreSQL is typically brought in for.

What can Dremio do that PostgreSQL cannot?

Dremio covers Arrow-based execution, Reflections, Semantic layer, Iceberg catalogue. PostgreSQL covers ACID Compliance, JSON/JSONB Support, Full-text Search, Extensibility.

Databases · head to head

Dremio vs PostgreSQL

Dremio

Databases

SQL query engine and lakehouse layer over Iceberg tables in object storage

From: Free
Rated: -

Full review Website

PostgreSQL

Databases

The world's most advanced open source relational database

From: Free
Rated: -

Full review Website

The short version

Each has a real cost: Dremio reflections consume compute and storage to build and refresh continuously, so a team that enables them widely discovers that background maintenance rather than user queries drives the DCU bill.; PostgreSQL requires manual scaling across multiple machines for very large deployments
They diverge on capability: Dremio covers Arrow-based execution, PostgreSQL covers ACID Compliance.
Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Dremio and PostgreSQL actually diverge.

Attributes where Dremio and PostgreSQL differ
Attribute	Dremio	PostgreSQL
Pricing model	Per Dremio Compute Unit consumed	Unknown
Platforms	Linux, Kubernetes, Cloud, Docker	Linux, Windows, macOS, BSD, Unix
Founded	Unknown	1996

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Databases).

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 Dremio

Arrow-based execution
Reflections
Semantic layer
Iceberg catalogue
Federated queries
Autonomous management
Fine-grained access control
BI connectors

Only in PostgreSQL

ACID Compliance
JSON/JSONB Support
Full-text Search
Extensibility
Advanced Indexing
Partitioning
Replication
pgAdmin

What people use each for

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

Dremio

A company with petabytes of Parquet in S3 that wants BI dashboards without duplicating it into a warehousenot PostgreSQL
A data platform team standardising on Apache Iceberg and needing a SQL engine plus catalogue that does not lock the tables innot PostgreSQL
An analytics group accelerating slow lake queries with Reflections instead of hand-built aggregate tablesnot PostgreSQL
A regulated enterprise that must keep data on premises but wants a modern lakehouse SQL layernot PostgreSQL

PostgreSQL

Transaction processingnot Dremio
Data storagenot Dremio
Application backendnot Dremio
Reportingnot Dremio
Data analyticsnot Dremio

Where each one falls short

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

Dremio

Reflections consume compute and storage to build and refresh continuously, so a team that enables them widely discovers that background maintenance rather than user queries drives the DCU bill.
Self-managing Dremio on Kubernetes requires real platform engineering capacity for tuning executors, memory and coordinator sizing, and it is not comparable in effort to running a managed warehouse.
The Community Edition lacks the security and governance features most enterprises require, so the free tier is a trial path rather than a viable production option for regulated buyers.
Dremio Cloud is AWS-first, which leaves Azure and Google Cloud customers on the self-managed path with the operational burden that entails.
Query performance without Reflections on raw, poorly laid out files is often unremarkable, so the promise of querying the lake as is depends on file layout work you still have to do.

PostgreSQL

Requires manual scaling across multiple machines for very large deployments
Performance tuning requires deep knowledge of database internals
No built-in graphical admin interface; command-line tools are primary method

Pricing, plan by plan

Dremio

Free

Community EditionFree
- Self-managed on your own hardware
- SQL engine and semantic layer
- No vendor support
Dremio Cloud$0.2/hour
- Billed at $0.20 per Dremio Compute Unit
- Includes query execution, Reflections and background processing
- 400 dollar trial credit for 30 days
Enterprise$undefined/year
- Self-managed on Kubernetes, on premises or any cloud
- Enterprise security, SSO and governance
- Vendor support with SLA

PostgreSQL

Free

No published plan breakdown. See the PostgreSQL review.

Which should you pick?

Choose Dremio if

You need arrow-based execution.
You want to start without paying.
You work on Linux, Kubernetes, Cloud, Docker.
You also want reflections.

Dremio review

Choose PostgreSQL if

You need acid compliance.
You want to start without paying.
You work on Linux, Windows, macOS, BSD, Unix.
You also want json/jsonb support.

PostgreSQL review

Questions people ask

Is Dremio or PostgreSQL better?: Neither clearly leads. Dremio starts at Free and PostgreSQL at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Dremio or PostgreSQL?: Dremio starts at Free and PostgreSQL at Free.
Does Dremio or PostgreSQL run on more platforms?: Dremio runs on Linux, Kubernetes, Cloud, Docker. PostgreSQL runs on Linux, Windows, macOS, BSD, Unix.
Can I use Dremio for free?: Both have a free tier, so you can try either at no cost before committing.
What is Dremio best used for?: Dremio is most often used for a company with petabytes of parquet in s3 that wants bi dashboards without duplicating it into a warehouse, a data platform team standardising on apache iceberg and needing a sql engine plus catalogue that does not lock the tables in, an analytics group accelerating slow lake queries with reflections instead of hand-built aggregate tables, a regulated enterprise that must keep data on premises but wants a modern lakehouse sql layer. Of those, a company with petabytes of parquet in s3 that wants bi dashboards without duplicating it into a warehouse and a data platform team standardising on apache iceberg and needing a sql engine plus catalogue that does not lock the tables in are not what PostgreSQL is typically brought in for.
What can Dremio do that PostgreSQL cannot?: Dremio covers Arrow-based execution, Reflections, Semantic layer, Iceberg catalogue. PostgreSQL covers ACID Compliance, JSON/JSONB Support, Full-text Search, Extensibility.

Answered from the vendors’ own pages

Dremio: How is Dremio Cloud billed?

At 0.20 US dollars per Dremio Compute Unit, which counts query execution, Reflection building and platform overhead, not just user queries.

PostgreSQL: Is PostgreSQL completely free?

Yes. PostgreSQL is completely free and open source with no licensing fees or restrictions on use.

Source

Dremio: Is there a free version?

Yes, a Community Edition you self-manage, but it omits the enterprise security and governance features and comes with no support.

PostgreSQL: What platforms does PostgreSQL run on?

PostgreSQL runs on all major operating systems including Linux, Windows, macOS, BSD, and commercial Unix variants, and has been proven highly scalable managing terabytes to petabytes of data.

Source

Dremio: Does it lock in my data?

No, tables stay in Apache Iceberg or Parquet in your own object storage and can be read by Spark, Trino or other engines.

PostgreSQL: What procedural languages are supported?

PostgreSQL supports stored functions and procedures in multiple languages including PL/pgSQL, Perl, Python, Tcl, Java, JavaScript, R, and Rust.

Source

Dremio: Do I still need a warehouse?

Often not for analytics, but Dremio is not a transactional store and high-concurrency operational serving is not its strength.

PostgreSQL: What is ACID compliance in PostgreSQL?

PostgreSQL has been ACID-compliant since 2001, ensuring data integrity through atomicity, consistency, isolation, and durability guarantees for all transactions.

Source

PostgreSQL: Does PostgreSQL support JSON data?

Yes. PostgreSQL supports JSON and JSONB data types for storing and querying JSON documents, along with XML and other document formats.

Source

Dremio vs PostgreSQL

Dremio

PostgreSQL

The short version

Where they differ

What each one covers

Only in Dremio

Only in PostgreSQL

What people use each for

Dremio

PostgreSQL

Where each one falls short

Dremio

PostgreSQL

Pricing, plan by plan

Dremio

PostgreSQL

Which should you pick?

Choose Dremio if

Choose PostgreSQL if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Dremio

More on PostgreSQL

Keep looking

Other head to heads