Infracost shows exact cloud costs for Terraform changes before they hit production - right in your pull requests. No more surprise AWS bills.

You know that sinking feeling when the monthly AWS bill arrives and it’s 3x what you expected? Infracost eliminates those surprises by calculating exact cloud costs for your Terraform changes before they deploy. It integrates directly into your pull request workflow, so you can see “this change will cost $247/month” right next to the code diff.

The tool supports over 1,100 resources across AWS, Azure, and GCP, with scary-accurate pricing that includes all the gotchas like data transfer and IOPS costs. Beyond basic cost estimation, it catches expensive mistakes like using outdated instance types and suggests optimizations (“switch from gp2 to gp3 storage to save 20%”). The CLI gives you instant terminal feedback, while the SaaS version adds team policies and guardrails for larger organizations.

With 12K+ stars and solid CI/CD integrations, this has become the standard way DevOps teams prevent cost disasters. The quick-start guide gets you running in minutes, and seeing those cost breakdowns in your first PR is genuinely eye-opening.

⭐ Stars: 12159
💻 Language: Go
🔗 Repository: infracost/infracost