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LangChain

LangChain, Inc.

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Biblioteca de código abierto para construir aplicaciones con modelos de lenguaje: cadenas, herramientas, memoria y agentes.

PriceOpen source
LicenceMIT
DifficultyNeeds technical knowledge
Learning it takes60 min
CategoryAgents
Who it is forDesarrolladores que construyen productos con IA.
Check the price on the vendor site

How to use it, step by step

Written for someone who never opened it. If you already use it, skip to the example.

  1. Instalá la biblioteca en Python o JavaScript.
  2. Conectá un modelo con su clave.
  3. Armá una cadena simple: instrucción, modelo y salida.
  4. Agregá herramientas o tus documentos cuando lo básico funcione.

A practical case

Caso práctico. Querés un asistente que responda con el manual interno. Con LangChain indexás los documentos y armás la consulta que busca y responde con cita.

Watch out for this

  • Cambia rápido: fijá versiones.
  • Agrega complejidad: para casos simples, la API directa alcanza.
  • Un agente con herramientas necesita límites y registro de lo que hace.
  • El precio y los planes cambian seguido: confirmalos en el sitio oficial antes de decidir.

Alternatives

LlamaIndex, CrewAI, Dify

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