Pulumi vs Spacelift
Pulumi and Spacelift are both popular tools in the DevOps & Infrastructure space. Pulumi uses a open-source model starting at Free, while Spacelift is paid from $40/mo. Pulumi offers a free tier, while Spacelift does not. Below we break down features, pricing, strengths, and weaknesses to help you decide which tool fits your workflow best.
Last updated: March 2026
Quick Verdict
Choose Pulumi if you want infrastructure as code using real programming languages with ai assistance.. Pulumi's biggest strengths include use real programming languages instead of dsls and ai assistant generates infrastructure from descriptions. Plus, it has a free tier to get started. Choose Spacelift if you prefer infrastructure as code management with ai-powered policy enforcement.. Key advantages include best multi-iac platform supporting all major tools and policy enforcement prevents dangerous infrastructure changes.
Infrastructure as code using real programming languages with AI assistance.
Infrastructure as code management with AI-powered policy enforcement.
| Pulumi | Spacelift | |
|---|---|---|
| Pricing | Free | $40/mo |
| Free Tier | Yes | No |
| Pricing Model | Open-source | Paid |
| Rating | ★ 4.2 | ★ 4.2 |
| Categories | DevOps & Infrastructure | DevOps & Infrastructure |
| Key Features | 6 features | 6 features |
| Feature | Pulumi | Spacelift |
|---|---|---|
| Infrastructure as code in Python, TypeScript, Go, and C# | ✓ | — |
| Pulumi AI for natural language to infrastructure code | ✓ | — |
| Multi-cloud support (AWS, Azure, GCP, Kubernetes) | ✓ | — |
| State management and drift detection | ✓ | — |
| Policy as code for compliance enforcement | ✓ | — |
| Reusable component libraries | ✓ | — |
| Multi-IaC support (Terraform, Pulumi, CloudFormation, Ansible) | — | ✓ |
| Automated drift detection and remediation | — | ✓ |
| Policy-as-code with Open Policy Agent | — | ✓ |
| AI-assisted infrastructure change analysis | — | ✓ |
| Approval workflows and plan previews | — | ✓ |
| Self-hosted and SaaS deployment options | — | ✓ |
Pulumi
Pros
- + Use real programming languages instead of DSLs
- + AI assistant generates infrastructure from descriptions
- + Strong multi-cloud and Kubernetes support
- + Open-source core with free community edition
Cons
- − Smaller community compared to Terraform
- − Requires programming knowledge (unlike simpler IaC tools)
- − State management can be complex for large deployments
Spacelift
Pros
- + Best multi-IaC platform supporting all major tools
- + Policy enforcement prevents dangerous infrastructure changes
- + Drift detection catches unauthorized manual changes
- + Strong enterprise features with self-hosted option
Cons
- − Premium pricing aimed at enterprise teams
- − Steeper learning curve than simpler CI/CD tools
- − No free tier for evaluation
The Bottom Line
Choose Pulumi if: you want infrastructure as code using real programming languages with ai assistance.. It has a free tier to get started, which Spacelift lacks. It's completely free to use. Keep in mind: smaller community compared to terraform.
Choose Spacelift if: you prefer infrastructure as code management with ai-powered policy enforcement.. Keep in mind: premium pricing aimed at enterprise teams.
Both tools compete in the DevOps & Infrastructure space. The right choice depends on your specific needs, team size, and budget.
Amazon Q Developer
Snyk Code
Harness
GitLab Duo
PagerDuty
Warp