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Best Data Quality Tools (2026): Top 10 Compared

Updated September 2026By StatWharf Editorial10 vendorsMethodology

Data quality tools check that the data in warehouses, lakes and pipelines is complete, accurate, fresh and consistent, and alert the owners when it is not. This page covers products whose main job is testing, monitoring and fixing data. Moving data between systems is covered on the data integration platforms and ETL tools pages, and finding and documenting data on the data catalog software page. The ten products below fall into three groups. Soda, Anomalo, Ataccama ONE, DQLabs and Informatica are data quality platforms that combine rules, profiling and anomaly detection. Monte Carlo, Bigeye, Sifflet and Elementary lead with data observability: automated monitoring of freshness, volume, schema and lineage. Great Expectations is an open-source testing framework. Seven of the ten publish a figure or a no-charge statement.

Order is not a ranking. How entries are ordered.

On this page
  1. Comparison table
  2. Vendor details
  3. Soda
  4. Anomalo
  5. Ataccama ONE
  6. Great Expectations (GX Core)
  7. Monte Carlo
  8. Bigeye
  9. Sifflet
  10. DQLabs
  11. Elementary
  12. Informatica Data Quality
  13. How to choose
  14. Frequently asked questions
  15. Suggest a vendor

Compare at a glance

Select a vendor for details and sources. Scroll the table horizontally on smaller screens.

Data Quality Tools: vendor fit and recorded pricing
VendorConsider forPricing notesStandout
Sodamid-marketData teams combining pipeline tests, data contracts and observability in one platformFree plan at $0 a month; Team $750 a month, annual billing and volume discounts available; Enterprise custom Checked Sep 2026Collaborative data contracts let data producers and consumers agree checks at the source
AnomaloenterpriseEnterprises wanting no-code, ML-based monitoring that looks inside table contentsNo usable published price; AWS Marketplace lists 12-, 24- and 36-month contracts in units the listing does not define; quoted Checked Sep 2026Unsupervised machine learning checks the values inside tables, not only metadata
Ataccama ONEenterpriseRegulated enterprises running data quality alongside master and reference data managementNo published figure; tiers set by named users, data objects and active quality checks, with soft limits and unlimited viewers Checked Sep 2026ONE AI Agent plans and runs whole data quality workflows from a prompt
Great Expectations (GX Core)open-sourcePython data teams writing data quality tests as code in their own pipelinesGX Core is open source under Apache 2.0 with no licence fee; GX Cloud lists a free Developer option, Team and Enterprise unpriced Checked Sep 2026Expectations act as readable unit tests for data, with auto-generated documentation of results
Monte CarloenterpriseEnterprises wanting broad data and AI observability with automated root cause analysis$50,000 for a 12-month credit contract on AWS Marketplace, overage $0.01 per credit, fees non-cancellable; direct tiers quoted Checked Sep 2026Field-level lineage and agents for triage and root cause across data and AI
BigeyeenterpriseEnterprises needing data observability with lineage into legacy and modern systems$45,000 a year for 100 actively monitored tables or $75,000 for 300 on AWS Marketplace, no refunds; other packages quoted Checked Sep 2026Lineage-enabled observability plus sensitive data scanning and AI policy enforcement
Siffletmid-marketData teams wanting observability, catalog and lineage together with self-serve entry$48,000 for 12 months of platform credits on AWS Marketplace, fees non-cancellable; site tiers by monitored assets are quoted Checked Sep 2026Built-in data catalog and lineage alongside monitoring, with hybrid or self-hosted enterprise deployment
DQLabsenterpriseEnterprises wanting unlimited users and assets on one data quality and observability package$140,000 platform fee for 12 months on AWS Marketplace, non-cancellable; add-ons such as extra data sources raise the fee Checked Sep 2026No per-seat, per-row or per-asset fees; scope is set by connected data source types
ElementaryspecialistAnalytics engineering teams running dbt that want observability inside their dbt projectElementary OSS is open source with no licence fee; Cloud plans by seats and tables, quoted, with a 30-day free trial Checked Sep 2026dbt-native tests and monitors configured as code, with no Cloud access to the data itself
Informatica Data QualityenterpriseLarge enterprises standardising and cleansing data across many systems within Informatica's cloudNo published figure; consumption-based pricing within Informatica's Intelligent Data Management Cloud, quoted Checked Sep 2026AI-generated rules plus cleansing and standardisation, not only monitoring

These comparisons draw on public product information, not hands-on testing of every tool. Source records identify available references and checks; missing evidence is marked. Buyer fit is an editorial assessment, not a measured performance score. How to use this research.

Data quality tools test and monitor the data that flows through warehouses, lakes and pipelines so that errors are caught before they reach reports, applications or AI models. They check for missing, late, duplicated or out-of-range values, detect schema changes and unusual shifts, and help teams trace a problem back to its source.

The ten products compared here approach the problem in different ways. Soda, Anomalo, Ataccama ONE, DQLabs and Informatica Data Quality are data quality platforms that combine rules, profiling and anomaly detection, and some also cleanse and standardise data. Monte Carlo, Bigeye, Sifflet and Elementary lead with data observability: automated monitoring of freshness, volume, schema and lineage. Great Expectations is an open-source framework for writing data tests in Python.

Every entry was checked against the vendor’s own pages or official marketplace listings in September 2026. Soda, Great Expectations, Monte Carlo, Bigeye, Sifflet, DQLabs and Elementary publish a figure or a no-charge statement; Anomalo, Ataccama and Informatica are quoted.

Vendor details and trade-offs

Soda

mid-marketsoda.io ↗
Consider forData engineering and data governance teams that want to test data in CI/CD, monitor production data for anomalies and agree data contracts between producers and consumers, as Soda documents for its data quality platform
Pricing notesSoda's pricing page lists a Free plan at $0 per month with free Soda Processing Units, pipeline testing, metrics observability and alerting integrations, and no credit card required. Team costs $750 per month and adds unlimited users, pay-as-you-go additional processing units, catalog integrations and add-ons. Enterprise is custom priced and adds collaborative data contracts, the no-code interface, advanced AI features, audit logs, SSO and private deployment. Annual billing and volume discounts are available (checked Sep 2026)
Feature to evaluateCovers both proactive testing before data reaches production and ML-based observability after it arrives

Soda describes itself as a data quality platform that gives data teams a shared workflow to monitor quality, catch problems early and act on them. Its documentation splits the work into two approaches. Data observability is reactive: ML-powered monitoring of metrics such as freshness, row counts and null values, with alerts when values move away from historical norms. Data testing is proactive: checks on known expectations that run during development or in CI/CD so that bad data does not reach production.

Data contracts connect the two. They make expectations about a dataset explicit and let the teams that produce data and the teams that consume it agree on them at the source. Soda's product pages also list record-level diagnostics, lineage and impact analysis, automated record-level resolution and pipeline fixing, an MCP server and use cases including cloud migration reconciliation and BCBS 239 compliance.

Soda publishes its prices, which is uncommon in this category.

Potential strengths

  • Published self-serve prices, including a free plan
  • Documents both data testing in CI/CD and anomaly monitoring in production

Trade-offs

  • Data contracts, the no-code interface and SSO sit in the custom-priced Enterprise plan
  • Usage beyond included processing units is billed separately on Team
Sources and status

Anomalo

enterpriseanomalo.com ↗
Consider forEnterprises that want automated monitoring of the data inside their tables, configured without code or through an API, with AI agents that investigate and report on changes, as Anomalo documents for its data quality platform
Pricing notesNo usable published price. Anomalo's AWS Marketplace listing sells 12-, 24- and 36-month contracts in a single unit dimension priced at $1.00 per unit for 12 months, but does not state what a unit covers; the listing directs buyers to the vendor to size the quantity. Contracts are therefore quoted in practice (checked Sep 2026)
Feature to evaluateData quality rules can be defined in natural language and monitored automatically by an agent

Anomalo sells automated data quality monitoring built on unsupervised machine learning. Its AWS Marketplace listing describes checks that automatically identify missing and anomalous data and that look inside tables rather than only at their metadata, configured either without code or through an API.

The company now presents the product as a set of AI agents. A Table Observability Agent monitors data availability, freshness and schema consistency. A Data Quality Agent lets users describe what good data looks like in natural language and then watches for deviations that could break dashboards, reports or AI models. A Data Insights Agent reports noteworthy changes in the data without being asked, and a Conversational Analytics Agent answers questions about the data. A Data Issue First Responder Agent, which would triage alerts and open tickets in ServiceNow or Jira, is listed as coming soon.

Anomalo positions the product for enterprises in sectors such as financial services, insurance and media.

Potential strengths

  • Deep monitoring of table contents rather than only freshness and volume
  • No-code setup alongside an API

Trade-offs

  • No meaningful published price
  • Several of its announced agents are marked as coming soon
Sources and status
  • Product reference
  • Pricing source
  • Billing terms: Contract units for 12, 24 or 36 months (AWS Marketplace)
  • Source review: checked Sep 25, 2026
  • Vendor confirmation: not confirmed

Ataccama ONE

enterpriseataccama.com ↗
Consider forLarge and regulated enterprises that want data quality, observability, lineage, catalog, reference data and master data management on one platform, with an AI agent acting as a digital data steward, as Ataccama documents for Ataccama ONE
Pricing notesNo published figure. Ataccama's pricing page states that the tier is set by three dimensions: named users with full access, data objects managed in the platform such as tables, views, pipelines and BI reports, and active data quality configurations run in the past 90 days. Read-only consumer users are unlimited, all limits are soft, and exceeding them does not trigger retroactive charges. Each named user receives an annual AI query allocation, with more available as an add-on. Configurations are scoped with Ataccama (checked Sep 2026)
Feature to evaluateOne platform covers data quality, observability, lineage, catalog, reference data and master data

Ataccama ONE is a data trust platform that manages data quality end to end, from finding problems to fixing them at the source. Ataccama states that it was named a Leader in the 2026 Gartner Magic Quadrant for Augmented Data Quality Solutions for the fifth consecutive time.

The data quality module monitors, cleanses and standardises data across systems, with rules written once and applied anywhere. The same platform adds a data catalog, data observability for pipeline anomalies, lineage from source to consumption, reference data management and master data management with AI-powered matching. Ataccama pitches the combination to regulated organisations that need audit-ready data for rules such as Basel, Solvency and the Dodd-Frank Act.

The ONE AI Agent is presented as a digital data steward. A user writes a prompt and the agent plans and runs the workflow: generating rules, creating test and reference data, enriching metadata and writing documentation. Ataccama says it cuts the time to create and apply a single rule from nine minutes to one.

Potential strengths

  • Pricing model is documented, with soft limits and no retroactive charges
  • Master and reference data management available in the same platform

Trade-offs

  • No published price
  • Broad platform scope is more than a team needing only pipeline tests will use
Sources and status

Great Expectations (GX Core)

open-sourcegreatexpectations.io ↗
Consider forData engineers and analysts who want to define data quality tests in Python, run them inside their own pipelines and publish readable validation results, as Great Expectations documents for GX Core
Pricing notesGX Core is open source under the Apache 2.0 licence and carries no licence fee; hosting and engineering time fall on the user. The GX Cloud pricing page lists a free Developer option and Team and Enterprise plans without published figures. In May 2026 Great Expectations announced that FICO had agreed to acquire GX Cloud and that Fivetran would become steward of GX Core and its community (checked Sep 2026)
Feature to evaluateOne of the most widely used open-source data quality frameworks, with a large library of Expectations

Great Expectations is an open-source Python framework for testing data. Its central idea is the Expectation: an expressive, extensible unit test for data, such as a column never being null or values falling within a range. Expectations give engineers and business users a shared language for data rules, and the framework can generate documentation for each set of validation results so that everyone sees the same outcome. GX Core supports Python 3.10 to 3.13 and is released under the Apache 2.0 licence.

GX Cloud, the hosted product, added collaborative workflows, policy management and governance on top of GX Core. The company is in transition. In May 2026 it announced that FICO had agreed to acquire GX Cloud as the basis of FICO's data quality offering, and that Fivetran would become steward of GX Core, which is to remain an open-source, community-driven project.

Buyers adopting GX Core today are choosing an open-source framework; the future of the hosted product depends on FICO.

Potential strengths

  • No licence fee for the open-source core
  • Tests live in code and version control alongside the pipeline

Trade-offs

  • Ownership is changing: GX Cloud is going to FICO and GX Core stewardship to Fivetran
  • No built-in anomaly monitoring in the open-source core; teams host and run it themselves
Sources and status

Monte Carlo

enterprisemontecarlodata.com ↗
Consider forEnterprise data teams that want automated monitoring across warehouses, lakes, ETL, BI and AI tools, with field-level lineage and root cause analysis, as Monte Carlo documents for its Data + AI Observability Platform
Pricing notesMonte Carlo sells credits consumed at published consumption rates, with the cost per credit set by tier: Start (up to 10 users, pay per monitor up to 1,000), Scale, Enterprise and Business Critical; prices are on request. Its AWS Marketplace listing shows a 12-month contract of Monte Carlo Credits at $50,000, with overage at $0.01 per unit, and states that all fees are non-cancellable (checked Sep 2026)
Feature to evaluateMonitors data pipelines and AI agents in one platform, with tiers up to a dedicated instance with regional failover

Monte Carlo is a data and AI observability platform. It uses machine learning to learn the normal behaviour of data across warehouses, lakes, ETL jobs, BI tools and AI applications, detects issues at each stage of the pipeline, assesses their impact and notifies the people responsible. Automatic field-level lineage and a central catalog show where each asset lives, who owns it and how healthy it is.

The company now also markets observability for AI agents, and a fleet of its own agents that automate triage and root cause analysis. Tiers scale from Start, for small teams with up to 10 users and up to 1,000 monitors, through Scale, which adds SSO, SCIM, audit logging and data mesh support, and Enterprise, which adds multi-workspace support, cost chargebacks and integrations with Oracle, SAP HANA, Teradata and Microsoft Fabric. Business Critical adds a dedicated instance and disaster recovery to a different region.

Monte Carlo prices through credits, and its public AWS Marketplace listing is the one published figure.

Potential strengths

  • Published annual contract figure on AWS Marketplace
  • Covers warehouses, lakes, ETL, BI and AI tools with field-level lineage

Trade-offs

  • Credit consumption is hard to forecast before a contract
  • Contract fees are non-cancellable
Sources and status
  • Product reference
  • Pricing source
  • Billing terms: 12-month credit contract with usage overage (AWS Marketplace)
  • Source review: checked Sep 25, 2026
  • Vendor confirmation: not confirmed

Bigeye

enterprisebigeye.com ↗
Consider forEnterprise data teams that need data quality monitoring with lineage across both modern and legacy data stacks, and that also want to find sensitive data and govern AI access, as Bigeye documents for its AI Trust Platform
Pricing notesBigeye's AWS Marketplace listing prices a Starter Package at $45,000 for 12 months, including 100 actively monitored tables, two Core Lineage Plus connectors and the browser extension, and an Enterprise Starter Package at $75,000 for 12 months with 300 actively monitored tables. The listing states no refunds. Bigeye does not publish prices on its own site, and other modules are quoted (checked Sep 2026)
Feature to evaluateMore than 70 monitoring metrics, deployable through the UI or YAML configuration

Bigeye began as a data observability platform and now calls its product the AI Trust Platform. The observability module monitors pipeline health across the data warehouse and applies deeper ML-based quality monitoring to the tables that matter most. The AWS Marketplace listing cites a library of more than 70 data quality metrics, which can be deployed through the user interface or programmatically with YAML configuration, and anomaly detection that replaces large numbers of manual alert rules.

Lineage is central to the product. Bigeye describes end-to-end lineage for enterprise environments with connectivity to both modern and legacy data stacks, used for upstream and downstream root cause and impact analysis. Further modules add metadata management, scanning for PII, PHI and PCI data in structured and unstructured sources, governance features such as certification and a business glossary, and AI Guardian, which enforces data access policies for AI applications at runtime.

Buyers pay by the number of tables under active monitoring.

Potential strengths

  • Published per-package price tied to a countable unit
  • Lineage connectivity covers legacy as well as modern data stacks

Trade-offs

  • Entry package starts at $45,000 a year
  • No refunds under the marketplace contract
Sources and status
  • Product reference
  • Pricing source
  • Billing terms: 12-month package contract by monitored tables (AWS Marketplace)
  • Source review: checked Sep 25, 2026
  • Vendor confirmation: not confirmed

Sifflet

mid-marketsiffletdata.com ↗
Consider forData teams that want data quality monitoring, a searchable catalog and lineage in one observability platform, with a self-serve route for up to 500 monitored assets, as Sifflet documents for its platform
Pricing notesSifflet's AWS Marketplace listing shows a 12-month contract of Data Observability Platform Credits at $48,000 and states that fees are non-cancellable and non-refundable except as required by law. Its own pricing page sets tiers by assets monitored, up to 500, up to 1,000 and above 1,000, bought self-serve, sales-assisted or through enterprise sales, without published figures (checked Sep 2026)
Feature to evaluateSentinel agent suggests monitors, with diagnostic and fix-suggestion agents in early access

Sifflet is a data observability platform for data engineers and data consumers. Its core tier bundles monitoring of fundamental metrics, such as freshness, schema and volume, with custom metrics, a data catalog and lineage, so that teams can find an asset, see what depends on it and understand why it broke from one place. Sifflet presents root cause analysis and business impact assessment as the way to shorten time to resolution.

The platform serves both technical and non-technical users. Engineers can connect it to coding workflows programmatically, while business users work through the interface and a metadata search engine. Sifflet's Sentinel agent suggests monitors, and agents for issue diagnosis and fix suggestions, named Sage and Forge, are in early access.

Tiers are set by the number of assets monitored. The smallest, up to 500 assets, can be bought self-serve or through marketplaces. The enterprise tier adds 24/7 support and hybrid or self-hosted deployment.

Potential strengths

  • Catalog and lineage included with core observability
  • Enterprise tier offers SaaS, hybrid or self-hosted deployment

Trade-offs

  • No figures on its own pricing page
  • Marketplace contract fees are non-cancellable
Sources and status
  • Product reference
  • Pricing source
  • Billing terms: 12-month credit contract (AWS Marketplace)
  • Source review: checked Sep 25, 2026
  • Vendor confirmation: not confirmed

DQLabs

enterprisedqlabs.ai ↗
Consider forEnterprises that want data quality, observability and data discovery in one package priced by data source rather than by users or assets, as DQLabs documents for its PRIZM platform
Pricing notesDQLabs' AWS Marketplace listing shows a 12-month platform fee of $140,000 and states that fees are non-cancellable and non-refundable except as required by law. Its pricing page describes one package covering the full PRIZM platform, one data source type with unlimited assets, volume, users and rules, one workflow integration, one catalog integration, two alert channels, onboarding and 8x5 support. Add-ons such as extra data sources, tenants, native cataloging and extended support are quoted (checked Sep 2026)
Feature to evaluateMore than 250 out-of-the-box checks across volume, schema, freshness, distribution and patterns

DQLabs sells PRIZM, a platform that combines data quality, data observability and data discovery. Its AWS Marketplace listing cites more than 250 out-of-the-box rules across volume, schema, freshness, reliability, distribution, frequency, statistics and pattern matching, plus custom rules for business logic. AI-augmented profiling analyses value frequencies, ranges and patterns, and the platform supports issue identification at attribute, table and pipeline level with root cause and impact analysis through lineage.

The discovery module enriches business metadata automatically with classifications, tags and relationships. DQLabs also describes LLM-based features for advanced quality checks and metadata enrichment, and a conversational interface aimed at users from citizen analysts to engineers.

The pricing model is unusual in this category. DQLabs does not charge per user, per row or per asset; scope is set by the data source types connected, and each includes unlimited assets and users. Everything beyond the base package, such as more sources, tenants or a sandbox, is a quoted add-on.

Potential strengths

  • Unlimited users, assets and rules within each connected source type
  • Published annual platform fee

Trade-offs

  • Highest published entry figure on this page
  • Each additional data source type is an add-on
Sources and status

Elementary

specialistelementary-data.com ↗
Consider forAnalytics and data engineers who build with dbt and want anomaly tests, monitors and lineage configured inside their dbt project, as Elementary documents for Elementary OSS and Elementary Cloud
Pricing notesElementary OSS, the open-source CLI and dbt package, is released under the Apache 2.0 licence with no licence fee. Elementary Cloud is priced by seats, environments and monitored tables across Scale, Enterprise and Unlimited plans, with figures available on request; AI agents carry additional credit-based pricing. A 30-day free trial covers the Essentials plan features without limits on seats, environments or monitored tables (checked Sep 2026)
Feature to evaluateAnomaly detection runs as native dbt tests, and the Cloud product needs no read access to the data

Elementary is a data observability tool built around dbt. The open-source edition, Elementary OSS, is a dbt package plus a command-line tool. The package collects data quality metrics, test results and run metadata into a schema in the warehouse; the CLI reads it to generate an observability report, surface anomalies and failed tests, and send alerts to Slack and Microsoft Teams. Anomaly detection runs as native dbt tests, and configuration is managed as code in the dbt project.

Elementary Cloud adds automated monitors for freshness, volume and schema, ML anomaly detection, column-level lineage from ingestion to BI, a built-in catalog, performance monitoring, data health scores and incident management. AI agents cover test coverage, triage and resolution, performance and cost, governance and cataloging. Elementary states that the Cloud product does not require access to customer data, reading only the metadata schema, and that it is SOC 2 Type II certified.

Teams that stop paying can fall back to the self-hosted open-source version.

Potential strengths

  • Free open-source edition and a 30-day Cloud trial
  • Configuration lives in dbt code alongside the models it checks

Trade-offs

  • Built around dbt, so it suits teams that do not use dbt less well
  • Cloud prices are not published
Sources and status

Informatica Data Quality

enterpriseinformatica.com ↗
Consider forLarge enterprises that need profiling, cleansing, standardisation, validation and observability across many data sources, especially those already using Informatica's Intelligent Data Management Cloud, as Informatica documents for Data Quality and Observability
Pricing notesNo published figure. Informatica's data quality page states that the product uses consumption-based pricing, so customers pay for what they use within its Intelligent Data Management Cloud; rates are quoted (checked Sep 2026)
Feature to evaluateCleanses and standardises data at scale, alongside profiling and observability of data and pipelines

Informatica, now part of Salesforce, sells Data Quality and Observability as part of its Intelligent Data Management Cloud. Where many tools on this page focus on detecting problems, Informatica also emphasises correcting them: the product continuously profiles data to find patterns, anomalies and quality risks, and uses AI to speed up cleansing, standardisation and validation.

Informatica says the product can generate common data quality rules automatically across data from a wide range of sources, using AI-powered rules and accelerators. Its observability features describe the health of data through three lenses, the data itself, the pipelines that move it and the business processes that rely on it. Informatica also positions data quality as the base for customer data used in applications and for AI initiatives.

The product sits in the same cloud platform as Informatica's data catalog, data integration, master data management and governance products, and is priced on consumption across that platform.

Potential strengths

  • Covers cleansing and standardisation as well as detection
  • Runs alongside Informatica's catalog, integration and master data products

Trade-offs

  • No published price
  • Most useful to organisations already committed to the Informatica platform
Sources and status

How to choose a vendor

Decide between rules, monitoring and both

Rule-based testing checks what a team already knows should be true, such as no null customer IDs or totals that reconcile. Anomaly monitoring learns normal patterns and flags changes nobody wrote a rule for. Great Expectations and Elementary start from tests written in code; Anomalo, Monte Carlo, Bigeye and Sifflet start from automated monitoring; Soda, Ataccama, DQLabs and Informatica document both. Most teams end up needing both, so buyers should check which one a product was built around.

Check who will write and own the checks

Code-first tools such as Great Expectations, Elementary and Soda's data contracts suit data engineers who keep checks in version control and run them in CI/CD. No-code rule builders and AI agents in Ataccama, Anomalo, Soda and Informatica target data stewards and business users. A tool that only engineers can operate tends to leave business rules undocumented, while a tool built for stewards may sit outside the engineering release process.

Compare prices on the same unit and term

Published prices use different units. Soda charges $750 a month for its Team plan. Monte Carlo, Sifflet and DQLabs list annual platform or credit contracts on AWS Marketplace, and Bigeye prices by actively monitored tables. Ataccama tiers by named users, data objects and active checks, and Informatica bills on consumption. Open-source options carry no licence fee but need engineering time to run. Marketplace contract listings are generally non-cancellable, so the committed volume matters more than the headline figure.

Frequently asked questions

What are data quality tools?

They are software that checks whether data is complete, accurate, fresh, consistent and valid, and alerts or fixes it when it is not. Some run rules that a team writes, some learn normal patterns and flag anomalies, and some do both. Several, such as Ataccama ONE and Informatica, also cleanse and standardise data rather than only detecting problems.

How much do data quality tools cost?

Seven of the ten publish a figure or a no-charge statement. Great Expectations GX Core and Elementary OSS are open source with no licence fee, and Soda has a free plan and a $750-a-month Team plan. AWS Marketplace listings show Bigeye from $45,000 a year, Sifflet at $48,000, Monte Carlo at $50,000 and DQLabs at $140,000. Anomalo, Ataccama and Informatica are quoted.

What is the difference between data quality and data observability?

Data quality is the broader goal: data that is fit for its purpose. Data observability is one way to reach it, by continuously monitoring freshness, volume, schema, distributions and lineage to catch unexpected changes. Rule-based testing is the other main way, checking known expectations. Soda's documentation describes observability as reactive and testing as proactive, and most teams use both.

Are there free or open-source data quality tools?

Yes. GX Core from Great Expectations and Elementary OSS are both released under the Apache 2.0 licence with no licence fee, and Soda offers a free plan at $0 a month. Open-source tools shift the cost to engineering time, since the team installs, runs and maintains them. Elementary Cloud offers a 30-day free trial.

What is happening to Great Expectations?

In May 2026 Great Expectations announced that FICO had agreed to acquire GX Cloud, its hosted product, and that Fivetran would become steward of the open-source GX Core project and its community. GX Core is to remain open source and community-driven. Buyers considering the hosted product should confirm its roadmap and terms with FICO.

Which data quality tools work well with dbt?

Elementary is built around dbt: its anomaly tests run as native dbt tests and its configuration lives in the dbt project. Great Expectations and Soda are also code-first and can run checks inside the same pipelines, and Monte Carlo and Sifflet monitor the warehouse tables that dbt models produce.

Do data quality tools replace a data catalog?

Not usually. Several products here include catalog features, including Sifflet, Ataccama, Monte Carlo and Elementary Cloud, but they focus on the health of data. Dedicated catalog software focuses on finding, documenting and governing data assets, and many quality tools integrate with an existing catalog, as DQLabs includes in its base package.

How was this list put together?

Each vendor was checked against its own product, documentation, pricing or official marketplace pages in September 2026, and prices are quoted as published with the check date. The page covers tools whose main job is testing, monitoring or fixing data; integration and catalog products are covered on separate pages. Position on the page is not a ranking, and no vendor has confirmed its entry.

Suggest a vendor or correction

Send factual corrections to editorial@statwharf.com. Corrections are free. For inclusion or placement enquiries, contact partnerships.

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First published September 2026. Page update dates reflect editorial changes, not a fresh check of every vendor.