# GitHub Actions vs GitLab CI/CD: which do AI models recommend for CI/CD, October 2026

IT AI Recommendation Index, October 2026 Edition, CI/CD platforms. Ten of fourteen models named GitHub Actions first on the direct prompt; two named GitLab CI/CD. Page: https://it-ai-index.com/developer/ci-cd-platforms/github-actions-vs-gitlab-ci-cd/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| GitHub Actions | 68% | #1 of 10 | 7% | 68 | 14 of 14 |
| GitLab CI/CD | 23% | #2 of 10 | 7% | 73 | 14 of 14 |

## The direct prompt, model by model

- GPT-5.4 mini: github actions first (first choices: GitHub Actions) (alternatives: Azure Pipelines, CircleCI)
- Gemini 3.5 Flash: github actions first (first choices: GitHub Actions) (alternatives: Argo CD, GitLab CI/CD, Harness)
- Grok 4.20: github actions first (first choices: GitHub Actions) (alternatives: CircleCI, GitLab CI/CD)
- DeepSeek V4 Flash: github actions first (first choices: GitHub Actions) (alternatives: GitLab CI/CD)
- Qwen 3.7 Flash: github actions first (first choices: GitHub Actions) (alternatives: GitLab CI/CD)
- Kimi K2: github actions first (first choices: GitHub Actions) (alternatives: CircleCI, GitLab CI/CD)
- GLM 4.7 FlashX: github actions first (first choices: GitHub Actions) (alternatives: Azure Pipelines, CircleCI, GitLab CI/CD)
- MiniMax M2.5: github actions first (first choices: GitHub Actions) (alternatives: CircleCI, GitLab CI/CD)
- GPT-6 Luna: github actions first (first choices: GitHub Actions) (alternatives: Buildkite, CircleCI, GitLab CI/CD)
- Muse Glimmer 30B: github actions first (first choices: GitHub Actions) (alternatives: GitLab CI/CD)
- Perplexity Sonar: gitlab ci/cd first (first choices: GitLab CI/CD) (alternatives: GitHub Actions)
- Mistral Small: gitlab ci/cd first (first choices: CircleCI, GitLab CI/CD) (alternatives: Buildkite, JetBrains TeamCity)
- Claude Haiku 4.5: neither named
- Llama 4 Maverick: neither named

## What the models said about GitHub Actions

- "GitHub Actions workflows that trust third-party actions or pull-request code too much" (GPT-6 Luna, negative prompt, soft negative)
- "This is currently the easiest place to start, but it can become the most expensive." (Qwen 3.7 Flash, negative prompt, soft negative)
- "Moderate Caution: GitHub Actions ... Common misconfigs in public pipelines" (Grok 4.20, negative prompt, soft negative)
- ""GitHub Actions is the right default for the vast majority of teams in 2026, and it's where I'd start unless you have a specific reason not to."" (Muse Glimmer 30B, budget prompt, first choice)
- "If teams are already on GitHub, GitHub Actions is the de facto default: bundled with GitHub Enterprise, 20,000+ marketplace actions." (Muse Glimmer 30B, scale prompt, first choice)
- "GitHub Actions | Teams already on GitHub Enterprise | Native integration, 20,000+ marketplace actions, SOC 2 certified" (Kimi K2, scale prompt, first choice)

## What the models said about GitLab CI/CD

- "Over 810 hours, caused by faulty updates and overload of CI/CD services during periods of heavy traffic." (Muse Glimmer 30B, negative prompt, soft negative)
- "GitLab specifically warns about shared non-ephemeral runners and privileged containers" (GPT-6 Luna, negative prompt, soft negative)
- "Vendor Lock-in Risk ... Self-hosted GitLab is notoriously resource-hungry." (Qwen 3.7 Flash, negative prompt, soft negative)
- "Some of the top recommendations include:

1. GitLab CI: A comprehensive CI/CD solution integrated within the GitLab DevSecOps platform." (Llama 4 Maverick, paraphrase prompt, first choice)
- "GitHub Actions or GitLab CI/CD offer the best combination of features, ease of use, and generous free tiers." (Kimi K2, budget prompt, first choice)
- "GitHub Actions and GitLab CI/CD are the safest defaults if you're already on those ecosystems" (DeepSeek V4 Flash, scale 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.