IT AI Index
Index Vendors › OpenTofu · September 2026 Edition
1 category · Ranked

OpenTofu

135Judge labels
52First choices
1Negative labels
12 of 12Models named it
1Category
September 2026 Edition. Every number here is derived from the raw labels under vendor table vv2026-09.2, every buyer segment counted.
Best standing
39% in IaC for mid-market buyers
Rank 2 of 46 in the mid-market standingendorsed leader
5 of 12 models made it the first choice on the direct prompt; 0% of its 49 labels there were negative.
By buyer segmentStrongest at mid-market.
In iac · each standing computed within its segment · bars are 0 to 100 · the accent bar is the product's own best reading

Standing by category

Every category where a model named OpenTofu for a mid-market B2B company. Share is first choices across the direct, paraphrase, budget and scale prompts; rank is within every product named in that category.
CategoryFunctionShareRankNegative rateLabelsQuadrant
Infrastructure as codeCloud and infrastructure39%2 of 460%49endorsed leader

Movement

This is the first edition on this tier, so no move can be computed for OpenTofu yet. From the next edition this section shows, per buyer segment, whether its share moved by more than the measured noise floor.

By model

How each model treated OpenTofu across every prompt where it was named for a mid-market B2B company. Twelve models, six prompts per category.
ModelFirst choiceAlternativeMentionNegativeLabels
Claude Haiku 4.502002
GPT-5.4 mini21104
Gemini 3.5 Flash60006
Perplexity Sonar22004
Grok 4.1 Fast33006
Mistral Small12003
DeepSeek V4 Flash32005
Llama 4 Maverick10102
Qwen 3.7 Flash21104
Kimi K242006
GLM 4.7 FlashX22004
MiniMax M2.512003

By framing

Which of the six questions produced the naming. By model says how often; this says asked what. The first-choice count on the right carries the marks of the models that produced it.
FramingLabels by classFirst choices
Direct21 labels11
Paraphrase18 labels10
Comparative29 labels5not counted in share
Budget-constrained30 labels26
Scale-constrained19 labels5
Negative18 labels13not counted in share
First choiceAlternativeMentionNegative135 labels in all, every segment counted; 52 of the 70 first choices count toward share, since the comparative and negative framings do not. The bar is one segment per label class, to scale within the framing.

What the models said for it

Verbatim evidence the judge attached to positive labels.

“If you require strict open-source guarantees (OSI-approved), consider OpenTofu, which is an established community-led fork of Terraform under the MPL 2.0 license.” Qwen 3.7 Flash · IaC · negative prompt · first choice
“OpenTofu | Seamless migration from old Terraform, open-source MPL 2.0 license, and fast-paced community innovation.” Gemini 3.5 Flash · IaC · scale prompt · first choice
“the best infrastructure-as-code (IaC) tool is OpenTofu (or Terraform), specifically when self-hosted” Qwen 3.7 Flash · IaC · budget prompt · first choice
“If you want a single practical default, I’d pick OpenTofu for a mid-sized B2B company starting fresh” Perplexity Sonar · IaC · paraphrase prompt · first choice

And against it

Verbatim evidence attached to negative labels. A warning on a product with few labels is a warning; on a product with many, it is one voice among them.

No model argued against it.

Named alongside

The products named in the same answers as OpenTofu, over the 135 answers that named it. Took the first choice instead counts the answers where the other product was the first choice and OpenTofu was named but was not.
ProductSame answerTook the first choice insteadHead to head
Pulumi126 of 13512Compare →
AWS CloudFormation74 of 1350Not in the top three
Ansible71 of 1351Not in the top three
AWS CDK60 of 1351Not in the top three
Crossplane50 of 1351Not in the top three
Spacelift36 of 1351Not in the top three
Azure Bicep32 of 1350Not in the top three
Puppet32 of 1350Not in the top three
Chef25 of 1350Not in the top three
A head-to-head page exists where both products are in a category's top three. The other rows are the same fact without a page behind them, so they link to the product instead.

What carried it into the answer

The sites and pages cited by the answers that named OpenTofu. A fact about retrieval, not a lever on the model.

Citations exist only for the models that return a source list, four of the twelve in this edition, so these counts come from 106 of the 135 answers that named OpenTofu and are not a share of its labels.

Domains cited

pulumi.com71
apiiro.com62
guideflow.com54
spacelift.io52
checkthat.ai50
cortex.io45
devtoollab.com33
devopsplatforms.com31
toolradar.com31
firefly.ai29

458 of the 458 domain citations in answers naming OpenTofu came from somebody else's page.

Pages cited

Pages are listed as the models cited them.

Is this your product?

Claim this page

Claiming is free and changes nothing in the data. A claimed page shows a verified contact who is told when each edition publishes and when OpenTofu's standing changes by more than the noise floor; the right to propose corrections to the vendor table, meaning names the judge wrote that should or should not read as OpenTofu, applied by version and listed in the change log; and a one-line description supplied by the vendor and marked as such.

It does not get any change to labels, shares or verdicts, any preview, or any say over which quotes appear. A verification link goes to your work email; an address at opentofu.org is approved on the spot, any other address is reviewed by hand.

Your name and company appear on the claimed page, or the company alone if you ask below. A title and a LinkedIn address appear there too if you give them, and are left off if you do not. Your email address is never published.

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