LangChain Reference home pageLangChain ReferenceLangChain Reference
  • GitHub
  • Main Docs
Deep Agents
LangChain
LangGraph
Integrations
LangSmith
  • Overview
  • MCP Adapters
    • Overview
    • Agents
    • Callbacks
    • Chains
    • Chat models
    • Embeddings
    • Evaluation
    • Globals
    • Hub
    • Memory
    • Output parsers
    • Retrievers
    • Runnables
    • LangSmith
    • Storage
    Standard Tests
    Text Splitters
    ⌘I

    LangChain Assistant

    Ask a question to get started

    Enter to send•Shift+Enter new line

    Menu

    MCP Adapters
    OverviewAgentsCallbacksChainsChat modelsEmbeddingsEvaluationGlobalsHubMemoryOutput parsersRetrieversRunnablesLangSmithStorage
    Standard Tests
    Text Splitters
    Language
    Theme
    Pythonlangchain-classicevaluationschemaPairwiseStringEvaluator
    Class●Since v1.0

    PairwiseStringEvaluator

    Compare the output of two models (or two outputs of the same model).

    Copy
    PairwiseStringEvaluator()

    Bases

    _EvalArgsMixinABC

    Methods

    method
    evaluate_string_pairs

    Evaluate the output string pairs.

    method
    aevaluate_string_pairs

    Asynchronously evaluate the output string pairs.

    View source on GitHub