It would have been great if the article provided a more realistic example.
The example they use is indeed more complex than the openai equivalent, but LangChain allows you to use several models from several providers.
Also, it's true that the override of the pipe character is unexpected. But it should make sense, if you're familiar with Linux/Unix. And I find it shows more clearly that you are constructing a pipeline:
The example they use is indeed more complex than the openai equivalent, but LangChain allows you to use several models from several providers.
Also, it's true that the override of the pipe character is unexpected. But it should make sense, if you're familiar with Linux/Unix. And I find it shows more clearly that you are constructing a pipeline: