# Terraform vs Ansible: which do AI models recommend for iac, October 2026

IT AI Recommendation Index, October 2026 Edition, Infrastructure as code. Eleven of fourteen models named Terraform first on the direct prompt; zero named Ansible. Page: https://it-ai-index.com/cloud/infrastructure-as-code/terraform-vs-ansible/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Terraform | 57% | #1 of 12 | 24% | 85 | 14 of 14 |
| Ansible | 4% | #3 of 12 | 24% | 38 | 14 of 14 |

## The direct prompt, model by model

- Claude Haiku 4.5: terraform first (first choices: Terraform) (alternatives: AWS CDK, AWS CloudFormation)
- Perplexity Sonar: terraform first (first choices: Terraform) (alternatives: AWS CDK, AWS CloudFormation, OpenTofu, Pulumi)
- Grok 4.1 Fast: terraform first (first choices: Terraform) (alternatives: AWS CloudFormation, Ansible, OpenTofu, Pulumi)
- Mistral Small: terraform first (first choices: Terraform) (alternatives: Crossplane, Pulumi)
- DeepSeek V4 Flash: terraform first (first choices: OpenTofu, Terraform) (alternatives: Pulumi)
- Llama 4 Maverick: terraform first (first choices: Terraform) (alternatives: AWS CDK, Crossplane, Pulumi)
- Qwen 3.7 Flash: terraform first (first choices: Terraform) (alternatives: OpenTofu, Pulumi)
- Kimi K2: terraform first (first choices: Terraform) (alternatives: AWS CDK, Crossplane, Pulumi)
- GLM 4.7 FlashX: terraform first (first choices: Terraform) (alternatives: AWS CloudFormation, OpenTofu, Pulumi)
- MiniMax M2.5: terraform first (first choices: Terraform) (alternatives: AWS CloudFormation, Ansible, Pulumi)
- Muse Glimmer 30B: terraform first (first choices: OpenTofu, Terraform) (alternatives: AWS CDK, AWS CloudFormation, Atlantis, Pulumi, Spacelift)
- GPT-5.4 mini: neither first, one named (first choices: OpenTofu) (alternatives: Azure Bicep, CloudFormation/CDK, Pulumi, Terraform)
- Gemini 3.5 Flash: neither named (first choices: OpenTofu) (alternatives: Pulumi, Scalr, Spacelift, env0)
- GPT-6 Luna: neither named (first choices: Terraform with HCP Terraform) (alternatives: AWS CDK, OpenTofu, Pulumi)

## What the models said about Terraform

- "Multi-cloud IaC | OpenTofu (not Terraform)" (Kimi K2, negative prompt, hard negative)
- "Unlike Terraform's HCP Terraform (which has a free tier limited to 500 managed resources and charges ~$0.10/resource/month beyond that)" (Grok 4.1 Fast, budget prompt, soft negative)
- "be cautious if you need a fully permissive open-source stack or want to minimize licensing risk. HashiCorp moved Terraform to BUSL" (GPT-5.4 mini, negative prompt, soft negative)
- "Terraform remains the default for multi‑cloud ops teams, with the deepest tooling and IBM backing, but the BSL license restricts commercial productization." (GLM 4.7 FlashX, comparative prompt, first choice)
- "*Look at:* HashiCorp Terraform. It is the resume-standard skill... the ecosystem (modules, providers, integrations) is unmatched." (Qwen 3.7 Flash, scale prompt, first choice)
- "the most common, low risk choice today is Terraform / OpenTofu for multi-cloud provisioning, with a remote state backend" (Muse Glimmer 30B, paraphrase prompt, first choice)

## What the models said about Ansible

- "If someone suggests using Ansible as your primary IaC tool for cloud provisioning, that's a mistake" (DeepSeek V4 Flash, direct prompt, hard negative)
- "Use Ansible/Chef/Puppet carefully when the job is configuration management rather than infrastructure provisioning" (Perplexity Sonar, negative prompt, soft negative)
- "Choose Ansible for configuration and operational automation rather than infrastructure provisioning." (Perplexity Sonar, comparative prompt, soft negative)
- "If you value simplicity and ease of hiring: Avoid Chef/Puppet; choose Ansible or Terraform." (Qwen 3.7 Flash, negative prompt, first choice)
- "the best default choice is usually Ansible or Terraform/OpenTofu" (Perplexity Sonar, budget prompt, first choice)
- "is OpenTofu or Ansible, as they are suitable for budget-conscious teams" (Llama 4 Maverick, budget prompt, first choice)

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen models, for a mid-market B2B company; rank is within the category. Comparisons are drawn for the top eight products in each category. Published under CC BY 4.0; the output is the models' output, and nothing here is a recommendation by the index.