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LangChain Example (Multiple Providers)

This example demonstrates how to use LaunchDarkly's AI Config with LangChain, supporting multiple providers including OpenAI, Anthropic, Google GenAI, and AWS Bedrock. To use a different provider, install the corresponding langchain-* package (e.g. poetry add langchain-mistralai).

Prerequisites

• Python 3.10 or higher
• Poetry installed
• A LaunchDarkly account and SDK key
• API keys for the providers you want to use

Setup

1. Create the following config in your LaunchDarkly project. You can use a different key by setting the environment variable in your .env.

   • Create an AI Config with a model and a system message. Default key: sample-completion.

2. Copy .env.example to .env and fill in your keys (only the provider keys for providers you actually use are required):

   cp .env.example .env

3. Install the required dependencies:

   poetry install

Run

poetry run langchain