Cohere

Overview

This module adds support for selected Cohere models.

Maven Coordinates

In addition to the Helidon integration with LangChain4j core dependencies, you must add the following:

<dependency>
    <groupId>io.helidon.integrations.langchain4j.providers</groupId>
    <artifactId>helidon-integrations-langchain4j-providers-cohere</artifactId>
</dependency>

Components

CohereEmbeddingModel

To automatically create and add CohereEmbeddingModel to the service registry add the following lines to application.yaml:

langchain4j:
  providers:
    cohere:
      api-key: "${COHERE_TOKEN}"

  models:
    cohere-embedding-model:
      provider: cohere
      model-name: "embed-english-v3.0"

If enabled is set to false, the configuration is ignored, and the component is not created.

Full list of configuration properties:

Key	Type	Description
api-key	string	Required. The API key used to authenticate requests to the Cohere API.
base-url	string	The base URL for the model API. If not present, the default value supplied from LangChain4j is used.
custom-headers	Map<string, string>	A map containing custom headers.
enabled	boolean	If set to false, this component will not be available even if configured.
input-type	string	Input type.
log-requests	boolean	Whether to log API requests.
log-responses	boolean	Whether to log API responses.
max-segments-per-batch	int	Maximum number of segments per batch.
model-name	string	The model name to use.
timeout	duration	The timeout setting for API requests. See here for the format.

CohereScoringModel

To automatically create and add CohereScoringModel to the service registry add the following lines to application.yaml:

langchain4j:
  providers:
    cohere:
      api-key: "${COHERE_TOKEN}"

  models:
    cohere-scoring-model:
      provider: cohere
      model-name: "rerank-english-v3.0"

If enabled is set to false, the configuration is ignored, and the component is not created.

Full list of configuration properties:

Key	Type	Description
api-key	string	Required. The API key used to authenticate requests to the Cohere API.
base-url	string	The base URL for the model API. If not present, the default value supplied from LangChain4j is used.
custom-headers	Map<string, string>	A map containing custom headers.
enabled	boolean	If set to false, this component will not be available even if configured.
log-requests	boolean	Whether to log API requests.
log-responses	boolean	Whether to log API responses.
max-retries	int	The maximum number of retries for failed API requests.
model-name	string	The model name to use.
timeout	duration	The timeout setting for API requests. See here for the format.

Additional Information

• LangChain4j Integration
• LangChain4j Cohere Documentation