LangChain vs vLLM

FeatureLangChainvLLM
CategoryAI Agent FrameworksLocal AI Infrastructure
PricingFree + LangSmith paidFree (open-source)
GitHub Stars98,00045,000
PlatformsmacOS, Linux, WindowsLinux
Features
  • ✓ Chain composition
  • ✓ RAG pipelines
  • ✓ Agent toolkits
  • ✓ Memory systems
  • ✓ Streaming
  • ✓ Multi-model
  • ✓ LangGraph
  • ✓ PagedAttention
  • ✓ Continuous batching
  • ✓ Tensor parallelism
  • ✓ OpenAI-compatible API
  • ✓ Multi-GPU
  • ✓ Quantization
Tags
open-sourceframeworkpythonjavascriptragchains
open-sourceinferenceservinggpuhigh-throughput