Models
==========================

.. note::
   `Conceptual Guide <https://docs.langchain.com/docs/components/models>`_


This section of the documentation deals with different types of models that are used in LangChain.
On this page we will go over the model types at a high level,
but we have individual pages for each model type.
The pages contain more detailed "how-to" guides for working with that model,
as well as a list of different model providers.

|
- `Getting Started <./models/getting_started.html>`_: An overview of the models.


Model Types
-----------

- `LLMs <./models/llms.html>`_: **Large Language Models (LLMs)** take a text string as input and return a text string as output.

- `Chat Models <./models/chat.html>`_: **Chat Models** are usually backed by a language model, but their APIs are more structured.
  Specifically, these models take a list of Chat Messages as input, and return a Chat Message.

- `Text Embedding Models <./models/text_embedding.html>`_: **Text embedding models** take text as input and return a list of floats.


.. toctree::
   :maxdepth: 1
   :caption: Models
   :name: models
   :hidden:

   ./models/getting_started.html
   ./models/llms.rst
   ./models/chat.rst
   ./models/text_embedding.rst