# CircleCI vs Semaphore

**Leader by vioscaleAI score:** CircleCI

| Attribute | CircleCI | Semaphore |
|---|---|---|
| **vioscaleAI score** | 76.4 (74% (medium)) | 62.5 (70% (medium)) |
| adoption.stackoverflow_questions | 8,600 | - |
| content.faq | `[{"answer":"CircleCI is a cloud-based continuous integration and continuous deployment (CI/CD) platform that automates the testing, building, and deployment of software projects. It integrates with version control systems to automatically run configured workflows whenever code is pushed or pull requests are created.","source":"https://circleci.com","question":"What is CircleCI?","confidence":0.95},{"answer":"CircleCI supports all major programming languages and frameworks, including Python, JavaScript/Node.js, Java, Go, Ruby, PHP, and Rust. Language support is achieved through Docker containers, allowing teams to define any custom environment needed for their builds and tests.","source":"https://circleci.com/docs","question":"What programming languages and platforms does CircleCI support?","confidence":0.92},{"answer":"CircleCI offers a free tier for open-source projects and individual developers with limited monthly compute credits. Paid subscription plans scale based on resource usage and organization members, with per-pipeline-run pricing models rather than per-project fees.","source":"https://circleci.com/pricing","question":"How is CircleCI priced?","confidence":0.88},{"answer":"Orbs are reusable, shareable packages of CircleCI configuration that bundle commands, jobs, and workflows to reduce duplication across projects. They accelerate setup for common integrations like deploying to cloud providers, running popular testing frameworks, or performing security scanning.","source":"https://circleci.com/docs","question":"What are CircleCI orbs and what can they do?","confidence":0.91},{"answer":"CircleCI provides self-hosted runners that execute jobs on a team's own infrastructure while maintaining centralized CI/CD orchestration through the cloud platform. This option addresses requirements around data residency, network isolation, or specialized compute environments.","source":"https://circleci.com/docs","question":"Does CircleCI offer self-hosted deployment options?","confidence":0.9},{"answer":"CircleCI natively integrates with GitHub, GitLab, and Bitbucket, using OAuth-based authentication to connect accounts and manage repository permissions. Workflows are automatically triggered by push events and pull request activities on these platforms.","source":"https://circleci.com/docs","question":"Which version control systems does CircleCI integrate with?","confidence":0.93},{"answer":"Yes, CircleCI supports both test parallelization and job-level parallelization, allowing test suites to run across multiple containers simultaneously. The platform also provides caching for dependencies and build artifacts to reduce redundant work across pipeline runs.","source":"https://circleci.com/docs","question":"Can CircleCI parallelize tests and jobs to speed up builds?","confidence":0.92},{"answer":"Competing CI/CD platforms include GitHub Actions, GitLab CI/CD, Jenkins, Travis CI, AWS CodePipeline, and JetBrains TeamCity. Selection typically depends on existing toolchain integration, deployment targets, compliance requirements, and organizational preferences.","source":"https://circleci.com","question":"What are the main alternatives to CircleCI?","confidence":0.89}]` | `[{"answer":"An all-in-one continuous integration and delivery platform designed for modern cloud development, offering both open-source self-hosted and cloud-hosted options for building and deploying applications. It is indexed under CI/CD Tools.","source":"https://semaphore.io/","question":"What is Semaphore?","confidence":0.6},{"answer":"Semaphore offers a free tier, so you can start without paying. Paid plans start at $0.00. Pricing changes often, so verify at source before relying on it.","source":"https://semaphore.io/","question":"Is Semaphore free?","confidence":0.6},{"answer":"We have confirmed browser-based access to Semaphore. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.","source":"https://semaphore.io/blog/2013/03/07/semaphore-pricing-update-with-higher-plans.html","question":"What platforms does Semaphore support?","confidence":0.6},{"answer":"Yes. Semaphore can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://semaphore.io/","question":"Can Semaphore be self-hosted?","confidence":0.6},{"answer":"We have independently confirmed SOC 2 and ISO 27001 for Semaphore. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Semaphore not holding them. Always confirm compliance directly before you rely on it.","source":"https://semaphore.io/","question":"What security certifications does Semaphore have?","confidence":0.48}]` |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"cloud":true,"self_hosted":true}` |
| description.long | A continuous integration and deployment service that automates software testing, building, and deployment across multiple compute environments, with intelligent workflow orchestration and parallel execution capabilities. | A delivery platform that combines CI/CD capabilities with AI-driven features through a command-line interface. |
| features.capabilities | `{"caching":true,"hosting":"both","marketplace":true,"matrix_builds":true,"yaml_pipelines":true,"container_native":true,"secrets_management":true,"deploy_environments":true,"self_hosted_runners":true}` | `{"hosting":"both","matrix_builds":true,"yaml_pipelines":true,"container_native":true,"self_hosted_runners":true}` |
| hosting.model | cloud | - |
| integrations.count | 15 | 1 |
| integrations.list | `[{"name":"AWS"},{"name":"AWS ECS"},{"name":"AWS ECR"},{"name":"AWS EKS"},{"name":"AWS S3"},{"name":"AWS Lambda"},{"name":"GitHub"},{"name":"Docker"},{"name":"Heroku"},{"name":"Netlify"},{"name":"OpenID Connect"},{"name":"Vault"},{"name":"GCP"},{"name":"Stripe"},{"name":"MCP"},{"name":"Firebase Distribution","category":"deployment"},{"name":"Fastlane","category":"build"},{"name":"Rollbar","category":"monitoring"}]` | `[{"name":"Flowdock"}]` |
| market.availability | `{"primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"cli":true,"web":true}` | `{"cli":true}` |
| pricing | `{"type":"usage","plans":[{"free":true,"name":"Free","summary":"Free","features":["30,000 free credits/month","Docker, Windows, Linux, Arm, macOS environments","Self-hosted runners","Docker layer caching","Deploys","Single sign-on (SSO)","Config policies","Community support"],"minSeats":5,"components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"contactSales":false,"includedLimits":{"credits":"30,000/month"}},{"free":false,"name":"Performance","summary":"$15/month + $0.60 per 1,000 additional credits","features":["30,000 free credits/month included","All compute environments including GPU","Docker layer caching","Deploys","Single sign-on (SSO)","Config policies","Ticket-based global support","8x5 support SLA (add-on)","24/7 support SLA (add-on)"],"components":[{"kind":"fixed","amount":15,"period":"month","currency":"USD"},{"per":{"qty":25000,"unit":"credits"},"kind":"metered","amount":15,"currency":"USD"}],"contactSales":false,"includedLimits":{"credits":"30,000/month"}}],"addOns":[{"name":"8x5 Support SLA"},{"name":"24/7 Support SLA"}],"summary":"Free plan with 30k monthly credits. Performance plan starts at $15/month with usage-based pricing for additional credits.","currency":"USD","freeTier":true,"sourceUrl":"https://circleci.com/pricing/","retrievedAt":"2026-09-22T14:44:28.383Z","startingPrice":{"amount":15,"period":"month","currency":"USD"},"billingPeriods":["month"]}` | `{"type":"usage","plans":[{"free":false,"name":"Compute - Ubuntu ARM","summary":"$0.003–$0.012/min depending on vCPU","components":[{"per":{"qty":1,"unit":"minute"},"kind":"metered","amount":0.003,"currency":"USD","specification":"2vCPU"},{"per":{"qty":1,"unit":"minute"},"kind":"metered","amount":0.006,"currency":"USD","specification":"4vCPU"},{"per":{"qty":1,"unit":"minute"},"kind":"metered","amount":0.012,"currency":"USD","specification":"8vCPU"}],"contactSales":false,"includedLimits":{"concurrent_jobs":"20 by default"}},{"free":false,"name":"Compute - Ubuntu x64","summary":"$0.0075–$0.015/min depending on vCPU","components":[{"per":{"qty":1,"unit":"minute"},"kind":"metered","amount":0.0075,"currency":"USD","specification":"2vCPU"},{"per":{"qty":1,"unit":"minute"},"kind":"metered","amount":0.015,"currency":"USD","specification":"4vCPU"}],"contactSales":false,"includedLimits":{"concurrent_jobs":"20 by default"}},{"free":false,"name":"Compute - MacOS","summary":"$0.09/min","components":[{"per":{"qty":1,"unit":"minute"},"kind":"metered","amount":0.09,"currency":"USD","specification":"4vCPU"}],"contactSales":false,"includedLimits":{"concurrent_jobs":"20 by default"}},{"free":false,"name":"Compute - Self-Hosted","summary":"$0.0025/min","components":[{"per":{"qty":1,"unit":"minute"},"kind":"metered","amount":0.0025,"currency":"USD"}],"contactSales":false,"includedLimits":{"concurrent_jobs":"contact for limits"}}],"addOns":[{"name":"Dedicated Cache Server","components":[{"kind":"fixed","amount":400,"period":"month","currency":"USD"}]},{"name":"Private Docker Registry","components":[{"kind":"fixed","amount":400,"period":"month","currency":"USD"}]},{"name":"Support - Basic","components":[{"kind":"fixed","amount":50,"period":"month","currency":"USD"}]},{"name":"Support - Priority Response","components":[{"kind":"fixed","amount":250,"period":"month","currency":"USD"}]},{"name":"Support - SLA Standard","components":[{"kind":"fixed","amount":500,"period":"month","currency":"USD"}]},{"name":"Support - SLA Premium","components":[{"kind":"fixed","amount":750,"period":"month","currency":"USD"}]},{"name":"Success - Visibility","components":[{"kind":"fixed","amount":125,"period":"month","currency":"USD"}]},{"name":"Success - Performance","components":[{"kind":"fixed","amount":300,"period":"month","currency":"USD"}]},{"name":"Success - Scale","components":[{"kind":"fixed","amount":1000,"period":"month","currency":"USD"}]},{"name":"Success - Alliance","components":[{"kind":"fixed","amount":2000,"period":"month","currency":"USD"}]},{"name":"Engineering Access","components":[{"kind":"one_time","amount":900,"currency":"USD"},{"kind":"one_time","amount":1250,"currency":"USD"},{"kind":"one_time","amount":2000,"currency":"USD"}]}],"summary":"Pay-per-minute metered compute: $0.0025/min (self-hosted) to $0.09/min (MacOS). Includes 20 concurrent jobs, $15/month free credits, 9.6 GB cache, and free support. Optional modular support and success services.","currency":"USD","freeTier":true,"sourceUrl":"https://semaphore.io/","retrievedAt":"2026-08-03T20:21:00.253Z","startingPrice":{"amount":0.0025,"period":"month","currency":"USD"},"billingPeriods":["month","year"]}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | freemium |
| pricing.price_level | mid | low |
| pricing.starting_price | `{"amount":15,"currency":"USD"}` | - |
| pricing.transparent | yes | no |
| reliability.status_page | yes | yes |
| security.disclosure_policy | yes | - |
| security.fedramp | yes | - |
| security.gdpr | yes | - |
| security.iso27001 | yes | yes |
| security.pci | yes | yes |
| security.soc2 | yes | yes |

## Capabilities (CI/CD Tools)

| Capability | CircleCI | Semaphore |
|---|:--:|:--:|
| **Deployment** |  |  |
| Hosting | Cloud + self-hosted | Cloud + self-hosted |
| Self-hosted runners | ✓ | ✓ |
| **Core** |  |  |
| Config-as-code pipelines | ✓ | ✓ |
| Matrix / parallel builds | ✓ | ✓ |
| **Build** |  |  |
| Container-native builds | ✓ | ✓ |
| **Performance** |  |  |
| Build caching | ✓ | - |
| **Security** |  |  |
| Secrets management | ✓ | - |
| **Delivery** |  |  |
| Deployment environments & approvals | ✓ | - |
| **Ecosystem** |  |  |
| Reusable actions / marketplace | ✓ | - |

*Source: vioscaleAI. Generated 2026-10-21T05:36:45.525Z. "-" = undocumented, not absent.*