Concourse CI vs Semaphore
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Semaphore is the stronger AI pick in CI/CD: it has a visibility score of 6.4 versus 0.6 for Concourse CI, and ranks ahead in 100% of the answers that name both.
Choose Concourse CI if…
- No licensing fees when self-hosted
Choose Semaphore if…
- You want the brand AI engines rank higher (6.4 vs 0.6)
- You need SOC 2 Type 2 or ISO 27001:2022 coverage
- predictable, transparent usage pricing
- free full-functionality enterprise tier for small teams and startups
AI visibility side by side
Latest weekly run · Nov 3
| Metric | Concourse CI | Semaphore |
|---|---|---|
| Visibility score | 0.6% | 6.4% |
| Change vs last week | New | New |
| Rank in CI/CD | #30 | #14 |
| Share of voice | 0.2% | 1.9% |
| Mentions this run | 1 | 11 |
| Positive in AI answers | — | 40% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Concourse CI 0pp · Semaphore 0pp over 0 weekly runs.
Engine by engine
Semaphore leads on 3 of 3 engines
Head to head in AI answers
1 engine answers name both brands
| Prompt | Engine | Concourse CI | Semaphore |
|---|---|---|---|
| Which CI/CD tool has transparent pricing? | AI Mode | #5 | #2 |
Features, pricing & fit
| Dimension | Concourse CI | Semaphore |
|---|---|---|
| Pricing model | — | Usage-based |
| Entry price | — | Free; paid from $0.003 / mo |
| Free plan | — | Yes |
| Deployment | Distributed as a single concourse binary, easy to run almost anywhere, especially with Docker. | Open source, cloud, hybrid or enterprise deployment |
| Compliance | — | SOC 2 Type 2, ISO 27001:2022 |
| Support | — | Free help with account setup, projects and Git integration, Paid Basic, Priority Response, SLA Standard and SLA Premium support plans, On-demand engineering access in blocks of hours |
| Founded | — | 2009 |
| Headquarters | — | Novi Sad, Serbia |
| Employees | — | 11–50 |
| Funding | — | PE round, Cypress Ridge Capital |
| Best for | — | Teams that want fast, low-cost CI/CD with pay-as-you-go pricing and the option to self-host open source. |
Plans side by side
Concourse CI
Pricing not available.
Semaphore
Pros and cons
Themes from the AI answers that mention each brand
Concourse CI
- No licensing fees when self-hosted
Semaphore
- predictable, transparent usage pricing
- free full-functionality enterprise tier for small teams and startups
- highest G2 review rating among CI/CD tools (4.7/5)
- low-friction integration for GitHub repositories
- scaling costs
- complex matrix requirements
- security track record concerns
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Concourse CI vs Semaphore”, https://slateindex.ai/compare/concourse-ci-vs-semaphore, data of Nov 3, 2026. Licence: CC BY 4.0.