Repo Compare › Infrastructure as code
Terraform vs OpenTofu vs Pulumi
A side-by-side look at how actively Terraform, OpenTofu and Pulumi are developed on GitHub — popularity, contributor base, commit activity and how quickly issues and pull requests move.
What the numbers say
- Terraform is the most-starred of the 3, with 50k stars — about 1.9× Pulumi's 26k.
- Over the 52 weeks to the snapshot, Pulumi recorded the most commits (2.4k), against 842 for OpenTofu.
- Terraform has closed or merged the most pull requests in its lifetime: 17k.
- Relative to its popularity, OpenTofu carries the lightest open-issue load: 9.1 open issues per 1,000 stars, versus 84.8 for Pulumi.
Head-to-head
Snapshot taken 30 September 2026.
| Metric | Terraform Active | OpenTofu Active | Pulumi Slowing |
|---|---|---|---|
| Stars | 50k | 30k | 26k |
| Forks | 11k | 1.4k | 1.4k |
| Contributors | 2.3k | 2.4k | 403 |
| Commits, last 52 weeks | 1.2k | 842 | 2.4k |
| Open issues | 1.8k | 275 | 2.2k |
| Open pull requests | 167 | 50 | 279 |
| Closed / merged PRs | 17k | 2.6k | 13k |
| Watchers | 1.2k | 148 | 191 |
| Last push | 30 Sep 2026 | 29 Sep 2026 | 30 Sep 2026 |
| Latest release | v1.16.4 (Sep 2026) | v1.12.6 (Aug 2026) | v3.266.0 (Sep 2026) |
| Main language | Go | Go | Go |
| Licence | Not detected by GitHub | MPL-2.0 | Apache-2.0 |
| Created | Mar 2014 | Aug 2023 | Oct 2016 |
The wide bar is that repository’s share of the largest value in its own row — half the length means half the number. The thin gauge beneath it is the same row rescaled from its smallest value to its largest, which makes a close gap such as 61k against 59k visible; on that gauge the row’s lowest value always sits at zero however big it is, so read it as a spread and never as a quantity. Bars compare repositories with each other and never one metric against another. Colour identifies the repository, matching the dot beside its name. On the two issue rows a longer bar means more open work, which is usually the opposite of better. The highlighted cell is the highest value in a row. “Active / Slowing / Dormant” is a simple heuristic from how recently code was pushed and open issues per star — a starting point, not a verdict. Stars measure popularity, not quality.
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