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Agent Frameworks
Methodology

LlamaIndex vs LangChain

LLLlamaIndexvsLangChainLALangChain
LlamaIndexLangChain
4%
96%

Leading: LangChain (95.8%)

Insufficient data
This matchup has 24 decisive cases (minimum 30 required for publication).

Statistics

MetricValue
LlamaIndex wins1
LangChain wins23
Abstains (no tool)0
Other tool chosen35
Decisive cases24
LlamaIndex win rate (unweighted)4.2%
95% CI0.7% - 20.2%
LlamaIndex win rate (weighted)4.2%

Comments

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LangChain

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Per-model breakdown

ModelTierLlamaIndexLangChainNoneOtherA rate
Llama 4 ScoutSmall120033%
DeepSeek R1 0528Frontier03000%
Devstral 2 2512Mid03000%
Gemini 2.5 ProFrontier03000%
Llama 4 MaverickFrontier03000%
Qwen3 Coder NextMid03000%
Claude Sonnet 4.6Frontier01020%
DeepSeek V4 FlashMid01010%
DeepSeek V4 ProFrontier01020%
MiMo V2.5 ProFrontier01020%
MiniMax M3Frontier01020%
Mistral Small 4Mid01020%
Claude Haiku 4.5Small0003n/a
Claude Opus 4.8Frontier0003n/a
Gemini 3.5 FlashSmall0003n/a
GLM 5.2Frontier0003n/a
GPT 5.3 CodexFrontier0003n/a
GPT 5.4 MiniMid0003n/a
GPT 5.5Frontier0003n/a
Kimi K2.7 CodeFrontier0003n/a

Per-prompt breakdown

PromptTierLlamaIndexLangChainNoneOtherA rate
ai-agent-applicationBeginner110099%
ai-agent-applicationIntermediate070130%
ai-agent-applicationAdvanced060130%