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LLM Coding Agents
Methodology

GitHub Copilot vs LangChain

GIGitHub CopilotvsLALangChain
GitHub CopilotLangChain
44%
56%

Leading: LangChain (56.1%)

Statistics

MetricValue
GitHub Copilot wins122
LangChain wins156
Abstains (no tool)348
Other tool chosen598
Decisive cases278
GitHub Copilot win rate (unweighted)43.9%
95% CI38.2% - 49.8%
GitHub Copilot win rate (weighted)43.9%

Comments

GitHub Copilot

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LangChain

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Per-model breakdown

ModelTierGitHub CopilotLangChainNoneOtherA rate
Gemini 2.5 ProFrontier440913100%
Llama 4 ScoutSmall29621983%
Gemini 2.5 FlashSmall112331132%
MiMo V2 ProFrontier626151919%
DeepSeek R1 0528Frontier322261512%
Llama 4 MaverickFrontier618271525%
Claude Opus 4.6Frontier0218370%
Qwen3 Coder NextMid0198380%
MiniMax M2.7Frontier86113957%
GPT 5.3 CodexFrontier1101342100%
DeepSeek V3.2Mid0825330%
Devstral 2 2512Mid16253114%
Kimi K2.5Frontier202433100%
Mistral Small 4Mid102828100%
GPT 5.4 MiniMid014610%
Claude Haiku 4.5Small003230n/a
Claude Sonnet 4.6Frontier002838n/a
GLM 5 TurboFrontier00066n/a
GPT 5.4Frontier001350n/a

Per-prompt breakdown

PromptTierGitHub CopilotLangChainNoneOtherA rate
ai-revenue-ops-copilotIntermediate4619113571%
ai-support-agent-platformIntermediate2140975034%
ai-revenue-ops-copilotBeginner16251125439%
ai-revenue-ops-copilotAdvanced1031215124%
ai-support-agent-platformAdvanced1719017047%
ai-support-agent-platformBeginner12221363835%