GitLab CI vs Jenkins: Integrated vs Self-Hosted
GitLab CI is integrated and YAML-driven; Jenkins is the flexible, plugin-rich self-hosted veteran. The trade is convenience versus control.
GitLab CI ships inside GitLab with first-class pipelines; Jenkins is a standalone automation server you host and extend. Here is the honest comparison.
| GitLab CI | Jenkins | |
|---|---|---|
| Config | .gitlab-ci.yml | Jenkinsfile (Groovy) or UI |
| Hosting model | GitLab SaaS or self-managed | Self-hosted controller + agents |
| Pricing | Compute minutes or self-managed | Free software + your infra + ops |
| Ecosystem | CI/CD Catalog + built-ins | 1,800+ plugins |
| Speed levers | Caching, fast runners | Agent sizing, parallelism |
| Maintenance | Low on SaaS | High (you run it) |
Pricing and maintenance
GitLab CI on SaaS removes server ops; self-managed GitLab Runner gives cheap scale you maintain. Jenkins is free software but you own the controller, agents, and plugin upkeep.
Config and ecosystem
GitLab bundles environments, review apps, and security scanning natively; Jenkins covers anything via plugins but with more maintenance. GitLab YAML is simpler than Groovy Jenkinsfiles.
A note for GitHub teams
If your code is actually on GitHub, neither is the natural fit - GitHub Actions is. There, managed runners (e.g. Latchkey) give self-hosted economics (~70% under GitHub-hosted) with warm pools and self-healing and no agents to run.
The verdict
Choose GitLab CI for integrated, low-maintenance pipelines on GitLab; keep Jenkins for plugin depth and full control if you have the ops team. GitHub shops should compare GitHub Actions plus managed runners instead.