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Best infrastructure-as-code tool

3 models · updated 2026-06-29

The verdict

OpenTofu leads — 2 of 3 models rank OpenTofu the top startup.

Not unanimous: Gemini picks Pulumi.

Combined ranking

  1. 1
    OpenTofu—11 pts
    GPT #2Claude #2Gemini #3· Open-source Terraform-compatible fork with strong community momentum.
  2. 2
    Pulumi—10 pts
    GPT #3Claude #3Gemini #2· Allows using general-purpose programming languages for infrastructure definitions.
  3. 3
    Crossplane—2 pts
    GPT #5Claude —Gemini #5· Kubernetes-native control plane for platform teams.

Not ranked (incumbents): Terraform, AWS CDK, AWS Cloud Development Kit, Ansible

By model

ChatGPT

  1. 1.Terraform
  2. 2.OpenTofu
  3. 3.Pulumi
  4. 4.AWS Cloud Development Kit
  5. 5.Crossplane

Claude

  1. 1.Terraform
  2. 2.OpenTofu
  3. 3.Pulumi
  4. 4.AWS CDK
  5. 5.Ansible

Gemini

  1. 1.Terraform
  2. 2.Pulumi
  3. 3.OpenTofu
  4. 4.AWS CDK
  5. 5.Crossplane

Tracked by ModelsAgree · rank 1 = 5 pts … rank 5 = 1 pt · re-polled continuously