IT AI Index
Index Developer platform CI/CD › GitHub Actions vs GitLab CI/CD
CI/CD platforms · September 2026 Edition

GitHub Actions vs GitLab CI/CD

Nine of twelve models named GitHub Actions first on the direct prompt; five named GitLab CI/CD. Both were named by all twelve models and GitHub Actions carries 63 labels and GitLab CI/CD 64, so the shares are not directly comparable.

GitHub Actions

endorsed leader

Named in two categories this edition.

GitLab CI/CD

accepted challenger

Named in one category this edition.

First-choice share65%27%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate8%5%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#1#2A position in a field of 9; printed, not drawn.
Labels6364A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, GitHub Actions reading right to left. Rank and label count are printed, not drawn.CircleCI was named alongside these two in nine of the twelve direct answers. GitHub Actions vs CircleCI · GitLab CI/CD vs CircleCI

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all twelve 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 CI/CD platforms page.

By framing

How many of the twelve models made each the first choice, per way of asking, and how many argued against it.
GitHub ActionsFirst choices, of twelve modelsGitLab CI/CD
Direct95
Paraphrase75
Comparative70
Budget-constrained120
Scale-constrained431 against GitHub Actions
Negative314 against GitHub Actions · 3 against GitLab CI/CD
Bars are first choices, 0 to 12 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to twelve.

The direct prompt

The plain question, one answer per model, grouped by where GitHub Actions and GitLab CI/CD stood in it.

Both were the first choice

3 of 12 modelsThe answer named them together, and the judge labeled each a first choice.
Claude Haiku 4.5GitHub Actions, GitLab CI/CD alternatives: Azure DevOps, CircleCI
Gemini 3.5 FlashGitHub Actions, GitLab CI/CD alternatives: Argo CD
Mistral SmallGitHub Actions, GitLab CI/CD alternatives: CircleCI, Jenkins

GitHub Actions first, GitLab CI/CD an alternative

6 of 12 modelsGitLab CI/CD was named in the answer but not as the choice, or not at all.
GPT-5.4 miniGitHub Actions alternatives: Azure Pipelines, CircleCI, GitLab CI/CD
Grok 4.1 FastGitHub Actions alternatives: CircleCI, GitLab CI/CD
DeepSeek V4 FlashGitHub Actions alternatives: GitLab CI/CD
Qwen 3.7 FlashGitHub Actions alternatives: CircleCI, GitLab CI/CD
Kimi K2GitHub Actions alternatives: Azure DevOps, CircleCI, GitLab CI/CD
GLM 4.7 FlashXGitHub Actions alternatives: Azure Pipelines, CircleCI, GitLab CI/CD

GitLab CI/CD first, GitHub Actions an alternative

2 of 12 modelsGitHub Actions was named in the answer but not as the choice, or not at all.
Perplexity SonarGitLab CI/CD alternatives: CircleCI, GitHub Actions, Semaphore
MiniMax M2.5CircleCI, GitLab CI/CD alternatives: Azure DevOps

Neither was named

1 of 12 modelsThe answer made no first choice from these two in this category.
Llama 4 Maverickno first choice

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

The same question asked on behalf of a different buyer. Each standing is computed within its segment and they are never added together. The figures above are the mid-market standing, which is the one the category orders by.
Small business
GitHub Actions leads by eighty-nine points.
GitHub Actions93%#1 of 9
GitLab CI/CD5%#2 of 9
The full small business standing →
Mid-marketThe figures above
GitHub Actions leads by thirty-nine points.
GitHub Actions65%#1 of 9
GitLab CI/CD27%#2 of 9
The full mid-market standing →
Enterprise
The order flips: GitLab CI/CD leads at enterprise.
GitLab CI/CD44%#1 of 11
GitHub Actions16%#2 of 11
The full enterprise standing →

What the models said about GitHub Actions

Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.

“Issues: Frequent outages—e.g., 57 incidents... Supply-chain attacks via unvetted third-party actions are common” Grok 4.1 Fast · negative prompt · soft negative
“simple solutions (like basic GitHub Actions with limited runners) often break down due to scaling issues” Qwen 3.7 Flash · scale prompt · soft negative
“its pricing model is based on per-minute usage on hosted runners” Llama 4 Maverick · negative prompt · soft negative
“If your code is on GitHub and you want something fast and simple: Go with GitHub Actions. It requires no setup, has a massive marketplace, and is highly cost-effective.” Gemini 3.5 Flash · comparative prompt · first choice
“Most mid-market B2B companies find GitHub Actions or GitLab CI/CD to be the sweet spot between ease of use, feature completeness, and cost.” Claude Haiku 4.5 · direct prompt · first choice
“Code on GitHub? GitHub Actions is the default, but evaluate GitHub Actions + required third-party security tools vs. GitLab (all-in-one)” Kimi K2 · scale prompt · first choice

What the models said about GitLab CI/CD

Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of seven in this category shown.

“When to be cautious: SaaS users needing high availability; self-hosted setups amplify risks if not updated.” Grok 4.1 Fast · negative prompt · soft negative
“The Caution: Stability & Downtime. ... Avoid GitLab.com (SaaS)” GLM 4.7 FlashX · negative prompt · soft negative
“its pricing model is also based on per-minute usage on SaaS” Llama 4 Maverick · negative prompt · soft negative
“the best overall CI/CD platform is usually GitLab CI/CD if you want an integrated platform with built-in DevSecOps” Perplexity Sonar · direct prompt · first choice
“Shortlist: GitHub Actions (if GitHub-centric), GitLab (end-to-end), CircleCI (speed-focused).” Grok 4.1 Fast · scale prompt · first choice
“GitHub Actions and GitLab CI/CD are the undisputed leaders for mid-market B2B companies” Gemini 3.5 Flash · direct prompt · first choice
Also compared

Comparisons are drawn for the top three products in each category. The output is the models' output; nothing here is a recommendation by the index.