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Perplexity's importance in the space has been growing, so we think it's time to add an official integration! Note: following the release of `langchain-perplexity` to `pypi`, we should be able to add `perplexity` as an extra in `libs/langchain/pyproject.toml`, but we're blocked by a circular import for now. --------- Co-authored-by: Eugene Yurtsev <eyurtsev@gmail.com> Co-authored-by: Chester Curme <chester.curme@gmail.com>
29 lines
776 B
Markdown
29 lines
776 B
Markdown
# langchain-perplexity
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This package contains the LangChain integration with Perplexity.
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## Installation
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```bash
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pip install -U langchain-perplexity
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```
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And you should [configure your perplexity credentials](https://docs.perplexity.ai/guides/getting-started)
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and then set the `PPLX_API_KEY` environment variable.
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## Usage
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This package contains the `ChatPerplexity` class, which is the recommended way to interface with Perplexity chat models.
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```python
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import getpass
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import os
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if not os.environ.get("PPLX_API_KEY"):
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os.environ["PPLX_API_KEY"] = getpass.getpass("Enter API key for Perplexity: ")
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from langchain.chat_models import init_chat_model
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llm = init_chat_model("llama-3.1-sonar-small-128k-online", model_provider="perplexity")
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llm.invoke("Hello, world!")
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``` |