Class OpenAI<CallOptions>

Wrapper around OpenAI large language models.

To use you should have the openai package installed, with the OPENAI_API_KEY environment variable set.

To use with Azure you should have the openai package installed, with the AZURE_OPENAI_API_KEY, AZURE_OPENAI_API_INSTANCE_NAME, AZURE_OPENAI_API_DEPLOYMENT_NAME and AZURE_OPENAI_API_VERSION environment variable set.

Remarks

Any parameters that are valid to be passed to openai.createCompletion can be passed through modelKwargs, even if not explicitly available on this class.

Example

const model = new OpenAI({
  modelName: "gpt-4",
  temperature: 0.7,
  maxTokens: 1000,
  maxRetries: 5,
});

const res = await model.invoke(
  "Question: What would be a good company name for a company that makes colorful socks?\nAnswer:"
);
console.log({ res });

Type Parameters

Hierarchy (view full)

Implements

Constructors

constructor

Properties

batchSize frequencyPenalty maxTokens model modelName n presencePenalty streaming temperature topP apiKey? azureADTokenProvider? azureOpenAIApiDeploymentName? azureOpenAIApiInstanceName? azureOpenAIApiKey? azureOpenAIApiVersion? azureOpenAIBasePath? bestOf? logitBias? modelKwargs? openAIApiKey? organization? stop? stopSequences? timeout? user? client clientConfig

Accessors

callKeys

Methods

completionWithRetry identifyingParams invocationParams

Constructors

constructor

Properties

batchSize

batchSize: number = 20

Batch size to use when passing multiple documents to generate

frequencyPenalty

frequencyPenalty: number = 0

Penalizes repeated tokens according to frequency

maxTokens

maxTokens: number = 256

Maximum number of tokens to generate in the completion. -1 returns as many tokens as possible given the prompt and the model's maximum context size.

model

model: string = "gpt-3.5-turbo-instruct"

Model name to use

modelName

modelName: string = "gpt-3.5-turbo-instruct"

Model name to use Alias for model

n

n: number = 1

Number of completions to generate for each prompt

presencePenalty

presencePenalty: number = 0

Penalizes repeated tokens

streaming

streaming: boolean = false

Whether to stream the results or not. Enabling disables tokenUsage reporting

temperature

temperature: number = 0.7

Sampling temperature to use

topP

topP: number = 1

Total probability mass of tokens to consider at each step

Optional apiKey

apiKey?: string

API key to use when making requests to OpenAI. Defaults to the value of OPENAI_API_KEY environment variable.

Optional azureADTokenProvider

azureADTokenProvider?: (() => Promise<string>)

A function that returns an access token for Microsoft Entra (formerly known as Azure Active Directory), which will be invoked on every request.

Type declaration

    • (): Promise<string>

    • Returns Promise<string>

Optional azureOpenAIApiDeploymentName

azureOpenAIApiDeploymentName?: string

Azure OpenAI API deployment name to use for completions when making requests to Azure OpenAI. This is the name of the deployment you created in the Azure portal. e.g. "my-openai-deployment" this will be used in the endpoint URL: https://{InstanceName}.openai.azure.com/openai/deployments/my-openai-deployment/

Optional azureOpenAIApiInstanceName

azureOpenAIApiInstanceName?: string

Azure OpenAI API instance name to use when making requests to Azure OpenAI. this is the name of the instance you created in the Azure portal. e.g. "my-openai-instance" this will be used in the endpoint URL: https://my-openai-instance.openai.azure.com/openai/deployments/{DeploymentName}/

Optional azureOpenAIApiKey

azureOpenAIApiKey?: string

API key to use when making requests to Azure OpenAI.

Optional azureOpenAIApiVersion

azureOpenAIApiVersion?: string

API version to use when making requests to Azure OpenAI.

Optional azureOpenAIBasePath

azureOpenAIBasePath?: string

Custom endpoint for Azure OpenAI API. This is useful in case you have a deployment in another region. e.g. setting this value to "https://westeurope.api.cognitive.microsoft.com/openai/deployments" will be result in the endpoint URL: https://westeurope.api.cognitive.microsoft.com/openai/deployments/{DeploymentName}/

Optional bestOf

bestOf?: number

Generates bestOf completions server side and returns the "best"

Optional logitBias

logitBias?: Record<string, number>

Dictionary used to adjust the probability of specific tokens being generated

Optional modelKwargs

modelKwargs?: Record<string, any>

Holds any additional parameters that are valid to pass to openai.createCompletion that are not explicitly specified on this class.

Optional openAIApiKey

openAIApiKey?: string

API key to use when making requests to OpenAI. Defaults to the value of OPENAI_API_KEY environment variable. Alias for apiKey

Optional organization

organization?: string

Optional stop

stop?: string[]

List of stop words to use when generating Alias for stopSequences

Optional stopSequences

stopSequences?: string[]

List of stop words to use when generating

Optional timeout

timeout?: number

Timeout to use when making requests to OpenAI.

Optional user

user?: string

Unique string identifier representing your end-user, which can help OpenAI to monitor and detect abuse.

Protected client

client: OpenAI

Protected clientConfig

clientConfig: ClientOptions

Accessors

callKeys

Methods

completionWithRetry

  • completionWithRetry(request, options?): Promise<AsyncIterable<Completion>>

  • Calls the OpenAI API with retry logic in case of failures.

    Parameters

    • request: CompletionCreateParamsStreaming

      The request to send to the OpenAI API.

    • Optional options: OpenAICoreRequestOptions

      Optional configuration for the API call.

    Returns Promise<AsyncIterable<Completion>>

    The response from the OpenAI API.

  • completionWithRetry(request, options?): Promise<Completion>

  • Parameters

    Returns Promise<Completion>

identifyingParams

  • identifyingParams(): Omit<CompletionCreateParams, "prompt"> & {
        model_name: string;
    } & ClientOptions

  • Get the identifying parameters for the model

    Returns Omit<CompletionCreateParams, "prompt"> & {
        model_name: string;
    } & ClientOptions

invocationParams

  • invocationParams(options?): Omit<CompletionCreateParams, "prompt">

  • Get the parameters used to invoke the model

    Parameters

    • Optional options: unknown

    Returns Omit<CompletionCreateParams, "prompt">

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