Anthropic

tip

Basic Anthropic support is available in all Langflow installations through the core Language Model component. This bundle adds an enhanced Anthropic component with additional provider-specific parameters.

If you installed lfx directly (not as part of langflow), install the Anthropic bundle separately:

1. Run uv pip install lfx-anthropic.
2. Restart Langflow.
3. To confirm the bundle loaded, run lfx extension list.

If you installed Langflow with uv pip install langflow, these bundle components are already included.

For more information, see Install LFX with bundle components.

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

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

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

Anthropic text generation

The Anthropic component generates text using Anthropic Chat and Language models like Claude.

It can output either a Model Response (Message) or a Language Model (LanguageModel). Specifically, the Language Model output is an instance of ChatAnthropic configured according to the component's parameters.

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

For more information, see Language model components.

Anthropic 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
max_tokens	Integer	Input parameter. The maximum number of tokens to generate. Set to 0 for unlimited tokens. Default: 4096.
model	String	Input parameter. The name of the Anthropic model to use. Options include various Claude 3 models.
anthropic_api_key	SecretString	Input parameter. Your Anthropic API key for authentication.
temperature	Float	Input parameter. Controls randomness in the output. Default: 0.1.
anthropic_api_url	String	Input parameter. Endpoint of the Anthropic API. Defaults to https://api.anthropic.com if not specified.
prefill	String	Input parameter. Prefill text to guide the model's response.