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CI/CD
Methodology

GitHub Actions vs CircleCI

GitHub ActionsGIGitHub ActionsvsCircleCICICircleCI
GitHub ActionsCircleCI
95%
5%

Leading: GitHub Actions (94.8%)

Statistics

MetricValue
GitHub Actions wins328
CircleCI wins18
Abstains (no tool)2
Other tool chosen0
Decisive cases346
GitHub Actions win rate (unweighted)94.8%
95% CI91.9% - 96.7%
GitHub Actions win rate (weighted)94.8%

Comments

GitHub Actions

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CircleCI

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Per-model breakdown

ModelTierGitHub ActionsCircleCINoneOtherA rate
Claude Haiku 4.5Small18000100%
Claude Opus 4.8Frontier18000100%
Claude Sonnet 4.6Frontier18000100%
Gemini 2.5 ProFrontier18000100%
Gemini 3.5 FlashSmall18000100%
GLM 5.2Frontier18000100%
GPT 5.3 CodexFrontier18000100%
GPT 5.4 MiniMid18000100%
GPT 5.5Frontier18000100%
Kimi K2.7 CodeFrontier18000100%
MiMo V2.5 ProFrontier18000100%
MiniMax M3Frontier18000100%
Llama 4 ScoutSmall1080056%
DeepSeek R1 0528Frontier17010100%
DeepSeek V4 FlashMid17000100%
DeepSeek V4 ProFrontier17000100%
Qwen3 Coder NextMid16000100%
Devstral 2 2512Mid15000100%
Mistral Small 4Mid15000100%
Llama 4 MaverickFrontier5101033%

Per-prompt breakdown

PromptTierGitHub ActionsCircleCINoneOtherA rate
ai-engineering-workflowIntermediate11180093%
ai-engineering-workflowBeginner11261095%
ai-engineering-workflowAdvanced10541096%