# GitHub vs Bitbucket: which do AI models recommend for source control, October 2026

IT AI Recommendation Index, October 2026 Edition, Source control hosting. Thirteen of fourteen models named GitHub first on the direct prompt; one named Bitbucket. Page: https://it-ai-index.com/developer/source-control-hosting/github-vs-bitbucket/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| GitHub | 70% | #1 of 10 | 16% | 83 | 14 of 14 |
| Bitbucket | 4% | #3 of 10 | 26% | 76 | 14 of 14 |

## The direct prompt, model by model

- Grok 4.20: both first (first choices: Bitbucket, GitHub) (alternatives: GitLab)
- Claude Haiku 4.5: github first (first choices: GitHub) (alternatives: Bitbucket, GitLab)
- GPT-5.4 mini: github first (first choices: GitHub) (alternatives: Azure DevOps, Bitbucket, GitLab)
- Gemini 3.5 Flash: github first (first choices: GitHub) (alternatives: GitLab)
- Perplexity Sonar: github first (first choices: GitHub) (alternatives: Bitbucket, GitLab)
- Mistral Small: github first (first choices: GitHub) (alternatives: Bitbucket, GitLab)
- DeepSeek V4 Flash: github first (first choices: GitHub) (alternatives: Bitbucket, GitLab)
- Qwen 3.7 Flash: github first (first choices: GitHub) (alternatives: Bitbucket, GitLab)
- Kimi K2: github first (first choices: GitHub) (alternatives: GitLab)
- GLM 4.7 FlashX: github first (first choices: GitHub) (alternatives: Bitbucket, GitLab)
- MiniMax M2.5: github first (first choices: GitHub, GitLab) (alternatives: Azure DevOps, Bitbucket)
- GPT-6 Luna: github first (first choices: GitHub) (alternatives: Bitbucket, GitLab)
- Muse Glimmer 30B: github first (first choices: GitHub) (alternatives: Azure DevOps, Azure Repos, GitLab)
- Llama 4 Maverick: neither named

## What the models said about GitHub

- "GitHub - due to controversies" (Llama 4 Maverick, negative prompt, hard negative)
- "have all experienced security breaches, credential leaks, and supply chain attacks in recent years... require careful configuration and security practices to mitigate risks" (Mistral Small, negative prompt, soft negative)
- "GitHub, especially if you need enterprise self-hosting: In May 2026, GitHub disclosed a compromise... it isn't by itself a reason to avoid GitHub.com." (GPT-6 Luna, negative prompt, soft negative)
- "The most popular and commonly used cloud-based Git platform with a user-friendly and intuitive UI and is widely regarded as the go-to platform for collaborative software development." (Muse Glimmer 30B, comparative prompt, first choice)
- "I'd recommend starting with a pilot of GitHub Enterprise Server or GitLab Self-Managed, as both offer the best balance of enterprise features and developer experience" (GLM 4.7 FlashX, scale prompt, first choice)
- "GitHub Enterprise | Best-in-class developer experience, massive open-source ecosystem, superior AI (Copilot), industry standard for talent." (Gemini 3.5 Flash, scale prompt, first choice)

## What the models said about Bitbucket

- "*Atlassian ended support for Bitbucket Server in February 2024*" (Muse Glimmer 30B, negative prompt, hard negative)
- "Bitbucket - had major impact incidents and high-severity flaws" (Llama 4 Maverick, negative prompt, hard negative)
- "One-third of Bitbucket incidents had major impact" (GLM 4.7 FlashX, negative prompt, hard negative)
- "If using Jira/Confluence (common in B2B): Bitbucket—seamless integration cuts context-switching; 3x cheaper than competitors" (Grok 4.20, direct prompt, first choice)
- "Top Recommendation: Bitbucket" (GLM 4.7 FlashX, paraphrase prompt, first choice)
- "Best For: Mid-to-large businesses that already run their entire planning, PM, and documentation cycles on Jira and Confluence." (Gemini 3.5 Flash, comparative prompt, alternative)

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.