Semaphore vs Spacelift: CI / CD Comparison (2026)
Semaphore offers a pay-as-you-go CI/CD platform focused on build times and concurrency, while Spacelift provides an Infrastructure as Code (IaC) platform with a comprehensive feature set including policy as code, drift detection, and cloud cost estimation.
AI Citation Scorecard
How often each is cited by major AI engines when buyers ask ci / cd questions. Last 90 days across ChatGPT, Perplexity, Gemini, Claude, and Copilot.
Probes run hourly; each (engine × query) combo retests every ~3 days.
Pricing
Key Features
- ✓Pay only for what you use
- ✓20 concurrent jobs by default
- ✓$15 free credits/month
- ✓20 GB/month egress/storage
- ✓9.6 GB cache storage
- ✓1 private worker
- ✓VCS integration
- ✓Policy as Code engine
- ✓Drift detection
- ✓Cloud cost estimation
- ✓Resource visualization
- ✓Workflow customization
- ✓IaC support
When to choose Semaphore
Choose Semaphore when your primary need is for CI/CD with a pay-as-you-go pricing model, requiring flexible concurrency and fast build times. It offers 20 concurrent jobs by default and $15 in free credits monthly.
When to choose Spacelift
Choose Spacelift when your focus is on Infrastructure as Code (IaC) management, requiring features like policy as code, drift detection, cloud cost estimation, resource visualization, and workflow customization. It includes a free tier with 1 private worker and VCS integration.
Frequently Asked Questions
AI visibility profiles
Is one of these your brand?
Get the full report by email: every ci / cd buyer question we ask, which engines name you, and who gets named instead.