OpenRouter

tip

This provider is an extra of the lfx-bundles metapackage. It is opt-in for both Langflow and standalone LFX installs:

uv pip install "lfx-bundles[<bundle>]"

Replace <bundle> with this page's provider name, for example qdrant. For a torch-free full Langflow install, run uv pip install "langflow[bundles]". For standalone LFX with every provider in lfx-bundles, including PyTorch-based providers, run uv pip install "lfx[bundles]". See Additional bundles for the exact extra name.

Bundles contain custom components that support specific third-party integrations with Langflow.

This page describes the components that are available in the OpenRouter bundle.

To configure OpenRouter once for all flows, you can also use the OpenAI Compatible model provider with the base URL https://openrouter.ai/api/v1.

For more information about OpenRouter features and functionality used by OpenRouter components, see the OpenRouter documentation.

OpenRouter text generation

This component generates text using OpenRouter's unified API for multiple AI models from different providers.

It can output either a Model Response (Message) or a Language Model (LanguageModel).

Use the Language Model output when you want to use an OpenRouter model as the LLM for another LLM-driven component, such as an Agent or Smart Transform component.

For more information, see Language model components.

OpenRouter text generation parameters

Some parameters are hidden by default in the visual editor. You can modify all component parameters through the component inspection panel that appears when you select a component.

Name	Type	Description
api_key	SecretString	Input parameter. Your OpenRouter API key for authentication.
model_name	Dropdown	Input parameter. The model to use for chat completion. Options are fetched live from the OpenRouter model catalog.
temperature	Float	Input parameter. Controls randomness in the output. Range: [0.0, 2.0]. Default: 0.7.
max_tokens	Integer	Input parameter. The maximum number of tokens to generate.
site_url	String	Input parameter. Your site URL for attribution in OpenRouter rankings.
app_name	String	Input parameter. Your app name for attribution in OpenRouter rankings.