Pulumi vs Spacelift
Side-by-side comparison of features, pricing, ratings, and alternatives.
Pulumi is an open-source infrastructure as code (IaC) platform that lets developers and platform teams define, deploy, and manage cloud infrastructure using general-purpose programming languages such as TypeScript, Python, Go, C#, and Java, instead of a domain-specific language like HCL. Infrastructure code can be packaged into reusable components and shared through standard package managers like npm, PyPI, and NuGet, and the platform includes a Registry with support for 150+ cloud providers and services.
Spacelift is an infrastructure-as-code orchestration platform that runs GitOps-style pipelines for Terraform, OpenTofu, CloudFormation, Pulumi, and Kubernetes. It's built for platform and DevOps teams that need to give developers self-service infrastructure provisioning while keeping governance and audit trails intact. The platform includes native state understanding and drift detection, policy-as-code enforcement using Open Policy Agent, and self-service 'Blueprints' that let developers provision infrastructure through golden paths without manual approvals. Spacelift also offers an AI assistant for natural-language infrastructure requests, multi-tenant Spaces for team-scoped access, and deployment options including SaaS, self-hosted, on-premises, and FedRAMP-authorized environments.
- Supports real general-purpose programming languages instead of a proprietary DSL
- Free Individual tier includes unlimited projects and stacks for a single user
- Open source core (Apache-2.0 licensed) with an active GitHub repository
- Self-hosting option available on the Business Critical plan for organizations with strict compliance needs
- Supports multiple IaC tools, not just Terraform
- Strong policy-as-code and governance controls
- Self-service provisioning reduces platform team bottlenecks
- Flexible deployment including self-hosted and FedRAMP options
- Team and Enterprise plans are priced on a resource-based credit system, which can be harder to predict than flat per-seat pricing
- Advanced features like SSO, drift detection, and audit logs are locked behind Enterprise and Business Critical tiers
- Custom pricing for the top Business Critical tier requires contacting sales rather than transparent self-serve pricing
- Pricing isn't published, requires contacting sales
- Aimed mainly at teams already using IaC, not a fit for beginners
- Feature depth means a learning curve for full adoption
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The Verdict
AI-generated from listing dataPulumi is a developer‑centric IaC platform focused on coding with general‑purpose languages, while Spacelift is an orchestration layer that adds governance, multi‑tool support, and flexible deployment options.
Key differences
- •Pulumi provides its own IaC engine with native language support; Spacelift does not create IaC but orchestrates existing tools (Terraform, Pulumi, etc.).
- •Spacelift offers multi‑tenant spaces, policy‑as‑code via OPA, and self‑hosted/FedRAMP deployments; Pulumi’s advanced governance features require Enterprise plans.
- •Pricing transparency: Pulumi has a freemium tier with unlimited projects for a single user; Spacelift requires contacting sales for all pricing.
- •Open source: Pulumi’s core is Apache‑2.0 open source; Spacelift is proprietary with no open‑source component.
- •AI assistance: Pulumi includes Pulumi Neo; Spacelift also offers an AI assistant, but details are not specified beyond natural‑language requests.
Pricing & value
Pulumi offers a free Individual tier with unlimited projects; Spacelift requires sales contact and no free tier.
Ease of use / learning curve
Pulumi lets developers use familiar languages, reducing learning overhead; Spacelift adds orchestration complexity.
Features & depth
Spacelift provides policy‑as‑code, multi‑tenant spaces, and self‑hosted/FedRAMP options not available in Pulumi free tier.
Integrations & ecosystem
Spacelift integrates with Terraform, OpenTofu, Pulumi, CloudFormation, plus cloud providers; Pulumi focuses on its own registry of 150+ services.
Collaboration
Spacelift’s spaces, role‑based access, and audit logs support team collaboration; Pulumi’s collaboration features are limited to Enterprise plans.
Scalability
Spacelift is built for large, multi‑team environments with multi‑tenant governance; Pulumi scales via Enterprise plans but less explicit.
Security & privacy
Spacelift offers self‑hosted, on‑prem, and FedRAMP‑authorized deployments; Pulumi’s self‑hosting is only on Business Critical tier.
Choose Pulumi if…
Small teams or individual developers needing free, language‑native IaC without heavy governance.
Choose Spacelift if…
Large organizations requiring multi‑tool orchestration, strict policy enforcement, and self‑hosted compliance.
Common questions
Is there a free tier to try the product?
Pulumi offers a freemium Individual tier; Spacelift does not publish a free tier and requires sales contact.
Can I use existing Terraform code with the platform?
Yes, Spacelift can orchestrate Terraform, OpenTofu, CloudFormation, and Pulumi; Pulumi is its own IaC engine.
What deployment options are available for compliance needs?
Spacelift provides SaaS, self‑hosted, on‑premises, and FedRAMP‑authorized deployments; Pulumi offers SaaS and self‑hosting only on Business Critical plans.