Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · Infrastructure Policy as Code Tools

Terraform vs Open Policy Agent

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Terraform #1 in Infrastructure Policy as Code Tools 9.4/10 Free plan Free plan✓ 0 of 5 features Visit Terraform
Open Policy Agent #3 in Infrastructure Policy as Code Tools 9.1/10 Open source ✓ 5 of 5 features Visit site

Terraform leads on 0 checks, Open Policy Agent on 0, and 6 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreTerraform · 9.4/10
  • Free planonly Terraform
  • Most featuresOpen Policy Agent · 5 of 5

Terraform scores higher on our rubric for infrastructure policy as code tools: 9.4 against 9.1 out of 10; our editors rank them #1 and #3.

Terraform is the better fit for multi-cloud Terraform teams. Open Policy Agent is the better fit for teams building policy platforms.

  • Terraform fits best

    Multi-cloud Terraform teams

  • Open Policy Agent fits best

    Teams building policy platforms

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Terraform 9.4/10 Visit ↗ Open Policy Agent 9.1/10 Visit ↗
At a glance
Editor score 9.4 9.1
Ranking #1 in Infrastructure Policy as Code Tools #3 in Infrastructure Policy as Code Tools
Best for Multi-cloud Terraform teams Teams building policy platforms
Pricing model Free plan + paid Free
Starting price — Open source
Free plan ✓ (best) Not checked yet
Free trial — —
Deployment Cloud, Self-hosted Self-hosted
Support Docs Community, Docs
Built for Solo, Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Terraform 0/5 · Open Policy Agent 5/5
Policy testing Not checked yet ✓ (best)
Admission control Not checked yet ✓ (best)
Runtime enforcement Not checked yet ✓ (best)
CI/CD integration Not checked yet ✓ (best)
Policy reporting Not checked yet ✓ (best)
Specs
Policy language Not checked yet Rego
IaC formats Not checked yet Terraform plan JSON, JSON, YAML
Our review
Pros
  • Supports AWS, Azure, Google Cloud, Oracle Cloud, Docker, and SaaS APIs
  • Combines plan/apply, state management, imports, drift detection, and policy
  • Offers remote and self-hosted execution through HCP Terraform
  • Rego supports declarative policy authoring and reusable rules
  • Covers Kubernetes, Terraform, CI/CD, APIs, and Go integrations
  • Includes testing, decision logging, and policy/data bundle loading
Cons
  • Advanced governance features begin on the Standard plan
  • Pricing is based on managed resources rather than users or seats
  • Some capabilities depend on HCP Terraform rather than the CLI alone
  • Requires teams to author policies in the Rego language
  • The supplied platform coverage is primarily API-based
  • Open-source delivery does not include paid hosted plans
Our verdict

Terraform is an infrastructure-as-code tool for building, changing, and versioning infrastructure through declarative HCL configuration. It is intended for infrastructure and platform teams managing cloud, private datacenter, SaaS, and…

Read the review →

Open Policy Agent (OPA) is an open-source, general-purpose policy engine that separates policy decisions from application logic. It is designed for teams building policy platforms across microservices, Kubernetes, CI/CD pipelines, API…

Read the review →
  1. TerraformInfrastructure Policy as Code Tools 9.4Free plan
  2. Open Policy AgentInfrastructure Policy as Code Tools 9.1Open source

Strengths and trade-offs

  • Terraform — where it wins

    • Supports AWS, Azure, Google Cloud, Oracle Cloud, Docker, and SaaS APIs
    • Combines plan/apply, state management, imports, drift detection, and policy
    • Offers remote and self-hosted execution through HCP Terraform

    Where it doesn't

    • Advanced governance features begin on the Standard plan
    • Pricing is based on managed resources rather than users or seats
    • Some capabilities depend on HCP Terraform rather than the CLI alone

  • Open Policy Agent — where it wins

    • Rego supports declarative policy authoring and reusable rules
    • Covers Kubernetes, Terraform, CI/CD, APIs, and Go integrations
    • Includes testing, decision logging, and policy/data bundle loading

    Where it doesn't

    • Requires teams to author policies in the Rego language
    • The supplied platform coverage is primarily API-based
    • Open-source delivery does not include paid hosted plans

More comparisons

All infrastructure policy as code tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update