DeepSource vs Qlty (formerly Code Climate Quality)
Feature checklists rarely decide anything. What decides it is the pricing metric, who has to write the tests, and which limitation you can live with.
Entry price
From $24 per user/month (Team, billed yearly)
Free tierFrom $20 per contributor/month (Pro; Enterprise $30)
Free tierWhat drives the bill
The metric that actually scales your invoice.
Team includes a $100 annual AI Review credit per user; Enterprise adds self-hosting and SSO on a quote.
Priced per contributor. Free for K-12 and universities, 10% off for registered non-profits.
Free tier
Free for public repositories, with 1,000 PR reviews a month; 14-day trial plus AI Review credits on paid plans.
Free plan with unlimited contributors, 1,000 analysis minutes and 100 AI autofixes a month.
Open source
Self-hostable
No-code authoring
Languages
Platforms
Fits teams
Adoption
Established
DeepSource · since 2019
Established
Qlty Software (spun out of Code Climate) · since 2011
Strengths
- Autofix commits remove the tedious half of acting on findings.
- Low false-positive rate keeps developers engaged with the tool.
- Cheap and quick to adopt.
- Maintainability grading is easy to communicate to non-engineers.
- Coverage and quality tracked together in one PR check.
- Free for open source.
Limitations
- Narrower language coverage than SonarQube.
- Smaller vendor with less enterprise governance tooling.
- Autofix still needs review — it is not unattended.
- Letter grades oversimplify and can drive the wrong behaviour.
- The Code Climate to Qlty transition means older documentation, URLs and integration guides still say Code Climate.
- Velocity, the companion engineering-metrics product, was sunset — do not buy expecting it.
Best for
Teams that want static analysis developers do not resent.
Teams that want a simple maintainability signal in pull requests.
All of these integrate with: GitHub, GitLab, Bitbucket, Slack, Jira.
Pricing last reviewed August 2026 and is indicative only — confirm on each vendor’s own page.