CircleCI vs Semaphore CI
No clear leader: CircleCI (69.9) and Semaphore CI (68.3) are within the 5-point margin; treat as a tie. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.
Capabilities
Feature-by-feature on the axes that matter for ci/cd tools. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
CircleCI
CircleCI is a CI/CD platform that automates code testing, validation, and deployment across various environments and platforms. It executes builds in isolated containers, integrates with version control systems, and provides intelligence to help development teams ship quality software faster.
Semaphore CI
Semaphore is a metered-pricing CI/CD platform offering cloud, hybrid, and self-hosted deployment options. Separates compute costs from support services, with transparent per-minute pricing starting at $0.0025/min for self-hosted.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
CircleCI
Free tier available. Usage-based credit system with prepaid discounts. Pricing scales based on active users and build volume.
- FreeFree
Semaphore CI
Free Community Edition (self-hosted, open source). Paid Semaphore Cloud and Enterprise Edition available.
- Community EditionFree
- Semaphore Cloud-
- Enterprise EditionContact sales
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
- GitHub
CircleCI
- AWS
- AWS ECS
- AWS ECR
- AWS EKS
- AWS S3
- AWS Lambda
- Docker
- Heroku
- Netlify
- OpenID Connect
- Vault
- GCP
- Stripe
- MCP
Semaphore CI
- Flowdock
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.