Semaphore vs Spinnaker
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 0.3 for Spinnaker, and ranks ahead in 100% of the answers that name both.
Choose Semaphore if…
- You want the brand AI engines rank higher (6.4 vs 0.3)
- AI answers describe it more positively (40% vs 0% positive)
- You need SOC 2 Type 2 or ISO 27001:2022 coverage
- predictable, transparent usage pricing
Choose Spinnaker if…
- Recommended for enterprise progressive delivery and release governance
AI visibility side by side
Latest weekly run · Nov 3
| Metric | Semaphore | Spinnaker |
|---|---|---|
| Visibility score | 6.4% | 0.3% |
| Change vs last week | New | New |
| Rank in CI/CD | #14 | #32 |
| Share of voice | 1.9% | 0.2% |
| Mentions this run | 11 | 1 |
| Positive in AI answers | 40% | 0% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Semaphore 0pp · Spinnaker 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 | Semaphore | Spinnaker |
|---|---|---|---|
| What are the best CI/CD tools in 2026? | Perplexity | #11 | #15 |
Features, pricing & fit
| Dimension | Semaphore | Spinnaker |
|---|---|---|
| Pricing model | Usage-based | — |
| Entry price | Free; paid from $0.003 / mo | — |
| Free plan | Yes | — |
| Deployment | Open source, cloud, hybrid or enterprise deployment | Self-installed open-source platform |
| 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 | Slack community, Documentation and GitHub |
| Founded | 2009 | 2015 |
| 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. | Enterprises that want to standardize release processes across multiple clouds |
Plans side by side
Semaphore
Spinnaker
Pricing not available.
Pros and cons
Themes from the AI answers that mention each brand
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
Spinnaker
- Recommended for enterprise progressive delivery and release governance
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Semaphore vs Spinnaker”, https://slateindex.ai/compare/semaphore-vs-spinnaker, data of Nov 3, 2026. Licence: CC BY 4.0.