Terraform vs Pulumi
Thirteen of fourteen models named Terraform first on the direct prompt; zero named Pulumi. Both were named by all fourteen models and Terraform carries 87 labels and Pulumi 75, so the shares are not directly comparable.
Named in four categories this edition.
Named in one category this edition.
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; every quote names the model and the prompt it came from. Both figures come from the infrastructure as code page.
By framing
TerraformFirst choices, of fourteen modelsPulumi
Across every category in the November 2026 Edition, Terraform and Pulumi were named in the same answer 211 times, of the 233 answers naming Terraform and the 224 naming Pulumi. In those answers Pulumi took the first choice five times and Terraform 136.
Every model, every framing
| Model | Direct | Paraphrase | Comparative | Budget-constrained | Scale-constrained | Negative |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | | | | | | |
| GPT-5.4 mini | | | | | ||
| Gemini 3.5 Flash | | | | | | |
| Perplexity Sonar | | | | | ||
| Grok 4.20 | | | | | | |
| Mistral Small | | | | | | |
| DeepSeek V4 Flash | | | | | | |
| Llama 4 Maverick | | | | |||
| Qwen 3.7 Flash | | | | | | |
| Kimi K2 | | | | | | |
| GLM 4.7 FlashX | | | | | | |
| MiniMax M2.5 | | | | | | |
| GPT-6 Luna | | | | | | |
| Muse Glimmer 30B | | | | | |
Terraform Pulumi first choice named as an alternative argued againstblank: not namedEach cell is one answer, Terraform on the left and Pulumi on the right.The direct prompt
Terraform first, Pulumi an alternative
13 of 14 modelsPulumi was named in the answer but not as the choice, or not at all.Neither was the first choice, one was named
1 of 14 modelsThe answer put something else first and named one of the two as an alternative.Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.
By buyer segment
Terraform49%#1 of 11Pulumi8%#3 of 11Terraform58%#1 of 13Pulumi6%#3 of 13Terraform62%#1 of 14Pulumi3%#4 of 14What the models said about Terraform
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.
“Avoid for tight budgets: Paid platforms like Terraform Enterprise, Pulumi Team, or Spacelift” Grok 4.20 · budget prompt · hard negative
“Terraform under the BSL license (if your org has restrictions)” GLM 4.7 FlashX · negative prompt · hard negative
“Why be cautious: If you are building a commercial product... the BSL license may restrict your use or introduce legal compliance risks.” Gemini 3.5 Flash · negative prompt · soft negative
“Preferred starters: Terraform (or OpenTofu, its open-source fork—use if concerned about HashiCorp's licensing shifts post-2023) for declarative multi-cloud.” Grok 4.20 · negative prompt · first choice
“For most budget-constrained companies, Terraform offers the best balance of features, flexibility, and cost (free), making it the industry standard.” Claude Haiku 4.5 · budget prompt · first choice
“Terraform (or OpenTofu if licensing matters) remains the safest default due to ecosystem maturity, hiring pool, and governance tooling” DeepSeek V4 Flash · scale prompt · first choice
What the models said about Pulumi
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.
“Imperative/Programming-Language-Based Tools like Pulumi (or CDK for Terraform) ... Why cautious? You're writing code ... instead of pure declarative configs.” Grok 4.20 · negative prompt · soft negative
“great if your team already prefers real programming languages, but it can be more complex and may take more engineering time” GPT-5.4 mini · budget prompt · soft negative
“Be Aware of Dependencies... A breaking change in `npm` or `pip` dependencies can break your infrastructure deployment.” Qwen 3.7 Flash · negative prompt · soft negative
“If you need multi-cloud or hybrid support, Terraform or Pulumi are top choices.” Mistral Small · comparative prompt · first choice
“Pick 2–3 tools (e.g., OpenTofu + Pulumi + one managed platform like Spacelift).” Grok 4.20 · scale prompt · first choice
“Pulumi is an excellent free option for individuals and small teams” GLM 4.7 FlashX · budget prompt · first choice
Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.