feat(api): add optional name argument + improve docs

src/lib/AbstractChatCompletionRunner.ts

@@ -6,7 +6,6 @@ import {
   type ChatCompletionMessage,
   type ChatCompletionMessageParam,
   type ChatCompletionCreateParams,
-  type ChatCompletionAssistantMessageParam,
   type ChatCompletionTool,
 } from 'openai/resources/chat/completions';
 import { APIUserAbortError, OpenAIError } from 'openai/error';
@@ -90,7 +89,6 @@ export abstract class AbstractChatCompletionRunner<
   }
 
   protected _addMessage(message: ChatCompletionMessageParam, emit = true) {
-    // @ts-expect-error this works around a bug in the Azure OpenAI API in which `content` is missing instead of null.
     if (!('content' in message)) message.content = null;
 
     this.messages.push(message);
@@ -217,7 +215,7 @@ export abstract class AbstractChatCompletionRunner<
   }
 
   #getFinalContent(): string | null {
-    return this.#getFinalMessage().content;
+    return this.#getFinalMessage().content ?? null;
   }
 
   /**
@@ -229,12 +227,12 @@ export abstract class AbstractChatCompletionRunner<
     return this.#getFinalContent();
   }
 
-  #getFinalMessage(): ChatCompletionAssistantMessageParam {
+  #getFinalMessage(): ChatCompletionMessage {
     let i = this.messages.length;
     while (i-- > 0) {
       const message = this.messages[i];
       if (isAssistantMessage(message)) {
-        return message;
+        return { ...message, content: message.content ?? null };
       }
     }
     throw new OpenAIError('stream ended without producing a ChatCompletionMessage with role=assistant');

src/resources/audio/speech.ts

@@ -28,7 +28,9 @@ export interface SpeechCreateParams {
 
   /**
    * The voice to use when generating the audio. Supported voices are `alloy`,
-   * `echo`, `fable`, `onyx`, `nova`, and `shimmer`.
+   * `echo`, `fable`, `onyx`, `nova`, and `shimmer`. Previews of the voices are
+   * available in the
+   * [Text to speech guide](https://platform.openai.com/docs/guides/text-to-speech/voice-options).
    */
   voice: 'alloy' | 'echo' | 'fable' | 'onyx' | 'nova' | 'shimmer';
 

src/resources/chat/completions.ts

@@ -105,21 +105,28 @@ export namespace ChatCompletion {
 
 export interface ChatCompletionAssistantMessageParam {
   /**
-   * The contents of the assistant message.
+   * The role of the messages author, in this case `assistant`.
    */
-  content: string | null;
+  role: 'assistant';
 
   /**
-   * The role of the messages author, in this case `assistant`.
+   * The contents of the assistant message. Required unless `tool_calls` or
+   * `function_call` is specified.
    */
-  role: 'assistant';
+  content?: string | null;
 
   /**
    * Deprecated and replaced by `tool_calls`. The name and arguments of a function
    * that should be called, as generated by the model.
    */
   function_call?: ChatCompletionAssistantMessageParam.FunctionCall;
 
+  /**
+   * An optional name for the participant. Provides the model information to
+   * differentiate between participants of the same role.
+   */
+  name?: string;
+
   /**
    * The tool calls generated by the model, such as function calls.
    */
@@ -309,7 +316,8 @@ export namespace ChatCompletionContentPartImage {
     url: string;
 
     /**
-     * Specifies the detail level of the image.
+     * Specifies the detail level of the image. Learn more in the
+     * [Vision guide](https://platform.openai.com/docs/guides/vision/low-or-high-fidelity-image-understanding).
      */
     detail?: 'auto' | 'low' | 'high';
   }
@@ -340,9 +348,9 @@ export interface ChatCompletionFunctionCallOption {
 
 export interface ChatCompletionFunctionMessageParam {
   /**
-   * The return value from the function call, to return to the model.
+   * The contents of the function message.
    */
-  content: string | null;
+  content: string;
 
   /**
    * The name of the function to call.
@@ -451,12 +459,12 @@ export namespace ChatCompletionMessageToolCall {
  * function.
  */
 export interface ChatCompletionNamedToolChoice {
-  function?: ChatCompletionNamedToolChoice.Function;
+  function: ChatCompletionNamedToolChoice.Function;
 
   /**
    * The type of the tool. Currently, only `function` is supported.
    */
-  type?: 'function';
+  type: 'function';
 }
 
 export namespace ChatCompletionNamedToolChoice {
@@ -477,12 +485,18 @@ export interface ChatCompletionSystemMessageParam {
   /**
    * The contents of the system message.
    */
-  content: string | null;
+  content: string;
 
   /**
    * The role of the messages author, in this case `system`.
    */
   role: 'system';
+
+  /**
+   * An optional name for the participant. Provides the model information to
+   * differentiate between participants of the same role.
+   */
+  name?: string;
 }
 
 export interface ChatCompletionTool {
@@ -511,7 +525,7 @@ export interface ChatCompletionToolMessageParam {
   /**
    * The contents of the tool message.
    */
-  content: string | null;
+  content: string;
 
   /**
    * The role of the messages author, in this case `tool`.
@@ -528,12 +542,18 @@ export interface ChatCompletionUserMessageParam {
   /**
    * The contents of the user message.
    */
-  content: string | Array<ChatCompletionContentPart> | null;
+  content: string | Array<ChatCompletionContentPart>;
 
   /**
    * The role of the messages author, in this case `user`.
    */
   role: 'user';
+
+  /**
+   * An optional name for the participant. Provides the model information to
+   * differentiate between participants of the same role.
+   */
+  name?: string;
 }
 
 /**
@@ -567,19 +587,19 @@ export interface ChatCompletionCreateParamsBase {
     | 'gpt-4-32k'
     | 'gpt-4-32k-0314'
     | 'gpt-4-32k-0613'
-    | 'gpt-3.5-turbo-1106'
     | 'gpt-3.5-turbo'
     | 'gpt-3.5-turbo-16k'
     | 'gpt-3.5-turbo-0301'
     | 'gpt-3.5-turbo-0613'
+    | 'gpt-3.5-turbo-1106'
     | 'gpt-3.5-turbo-16k-0613';
 
   /**
    * Number between -2.0 and 2.0. Positive values penalize new tokens based on their
    * existing frequency in the text so far, decreasing the model's likelihood to
    * repeat the same line verbatim.
    *
-   * [See more information about frequency and presence penalties.](https://platform.openai.com/docs/guides/gpt/parameter-details)
+   * [See more information about frequency and presence penalties.](https://platform.openai.com/docs/guides/text-generation/parameter-details)
    */
   frequency_penalty?: number | null;
 
@@ -627,7 +647,9 @@ export interface ChatCompletionCreateParamsBase {
   max_tokens?: number | null;
 
   /**
-   * How many chat completion choices to generate for each input message.
+   * How many chat completion choices to generate for each input message. Note that
+   * you will be charged based on the number of generated tokens across all of the
+   * choices. Keep `n` as `1` to minimize costs.
    */
   n?: number | null;
 
@@ -636,7 +658,7 @@ export interface ChatCompletionCreateParamsBase {
    * whether they appear in the text so far, increasing the model's likelihood to
    * talk about new topics.
    *
-   * [See more information about frequency and presence penalties.](https://platform.openai.com/docs/guides/gpt/parameter-details)
+   * [See more information about frequency and presence penalties.](https://platform.openai.com/docs/guides/text-generation/parameter-details)
    */
   presence_penalty?: number | null;
 
@@ -649,10 +671,10 @@ export interface ChatCompletionCreateParamsBase {
    * **Important:** when using JSON mode, you **must** also instruct the model to
    * produce JSON yourself via a system or user message. Without this, the model may
    * generate an unending stream of whitespace until the generation reaches the token
-   * limit, resulting in increased latency and appearance of a "stuck" request. Also
-   * note that the message content may be partially cut off if
-   * `finish_reason="length"`, which indicates the generation exceeded `max_tokens`
-   * or the conversation exceeded the max context length.
+   * limit, resulting in a long-running and seemingly "stuck" request. Also note that
+   * the message content may be partially cut off if `finish_reason="length"`, which
+   * indicates the generation exceeded `max_tokens` or the conversation exceeded the
+   * max context length.
    */
   response_format?: ChatCompletionCreateParams.ResponseFormat;
 
@@ -734,23 +756,22 @@ export namespace ChatCompletionCreateParams {
      */
     name: string;
 
+    /**
+     * A description of what the function does, used by the model to choose when and
+     * how to call the function.
+     */
+    description?: string;
+
     /**
      * The parameters the functions accepts, described as a JSON Schema object. See the
-     * [guide](https://platform.openai.com/docs/guides/gpt/function-calling) for
-     * examples, and the
+     * [guide](https://platform.openai.com/docs/guides/text-generation/function-calling)
+     * for examples, and the
      * [JSON Schema reference](https://json-schema.org/understanding-json-schema/) for
      * documentation about the format.
      *
-     * To describe a function that accepts no parameters, provide the value
-     * `{"type": "object", "properties": {}}`.
-     */
-    parameters: Shared.FunctionParameters;
-
-    /**
-     * A description of what the function does, used by the model to choose when and
-     * how to call the function.
+     * Omitting `parameters` defines a function with an empty parameter list.
      */
-    description?: string;
+    parameters?: Shared.FunctionParameters;
   }
 
   /**
@@ -762,10 +783,10 @@ export namespace ChatCompletionCreateParams {
    * **Important:** when using JSON mode, you **must** also instruct the model to
    * produce JSON yourself via a system or user message. Without this, the model may
    * generate an unending stream of whitespace until the generation reaches the token
-   * limit, resulting in increased latency and appearance of a "stuck" request. Also
-   * note that the message content may be partially cut off if
-   * `finish_reason="length"`, which indicates the generation exceeded `max_tokens`
-   * or the conversation exceeded the max context length.
+   * limit, resulting in a long-running and seemingly "stuck" request. Also note that
+   * the message content may be partially cut off if `finish_reason="length"`, which
+   * indicates the generation exceeded `max_tokens` or the conversation exceeded the
+   * max context length.
    */
   export interface ResponseFormat {
     /**

src/resources/completions.ts

@@ -177,7 +177,7 @@ export interface CompletionCreateParamsBase {
    * existing frequency in the text so far, decreasing the model's likelihood to
    * repeat the same line verbatim.
    *
-   * [See more information about frequency and presence penalties.](https://platform.openai.com/docs/guides/gpt/parameter-details)
+   * [See more information about frequency and presence penalties.](https://platform.openai.com/docs/guides/text-generation/parameter-details)
    */
   frequency_penalty?: number | null;
 
@@ -232,7 +232,7 @@ export interface CompletionCreateParamsBase {
    * whether they appear in the text so far, increasing the model's likelihood to
    * talk about new topics.
    *
-   * [See more information about frequency and presence penalties.](https://platform.openai.com/docs/guides/gpt/parameter-details)
+   * [See more information about frequency and presence penalties.](https://platform.openai.com/docs/guides/text-generation/parameter-details)
    */
   presence_penalty?: number | null;
 

src/resources/embeddings.ts

@@ -82,7 +82,8 @@ export interface EmbeddingCreateParams {
    * Input text to embed, encoded as a string or array of tokens. To embed multiple
    * inputs in a single request, pass an array of strings or array of token arrays.
    * The input must not exceed the max input tokens for the model (8192 tokens for
-   * `text-embedding-ada-002`) and cannot be an empty string.
+   * `text-embedding-ada-002`), cannot be an empty string, and any array must be 2048
+   * dimensions or less.
    * [Example Python code](https://cookbook.openai.com/examples/how_to_count_tokens_with_tiktoken)
    * for counting tokens.
    */

src/resources/files.ts

@@ -12,10 +12,10 @@ import { Page } from 'openai/pagination';
 
 export class Files extends APIResource {
   /**
-   * Upload a file that can be used across various endpoints/features. The size of
-   * all the files uploaded by one organization can be up to 100 GB.
+   * Upload a file that can be used across various endpoints. The size of all the
+   * files uploaded by one organization can be up to 100 GB.
    *
-   * The size of individual files for can be a maximum of 512MB. See the
+   * The size of individual files can be a maximum of 512 MB. See the
    * [Assistants Tools guide](https://platform.openai.com/docs/assistants/tools) to
    * learn more about the types of files supported. The Fine-tuning API only supports
    * `.jsonl` files.

src/resources/shared.ts

@@ -7,33 +7,31 @@ export interface FunctionDefinition {
    */
   name: string;
 
+  /**
+   * A description of what the function does, used by the model to choose when and
+   * how to call the function.
+   */
+  description?: string;
+
   /**
    * The parameters the functions accepts, described as a JSON Schema object. See the
-   * [guide](https://platform.openai.com/docs/guides/gpt/function-calling) for
-   * examples, and the
+   * [guide](https://platform.openai.com/docs/guides/text-generation/function-calling)
+   * for examples, and the
    * [JSON Schema reference](https://json-schema.org/understanding-json-schema/) for
    * documentation about the format.
    *
-   * To describe a function that accepts no parameters, provide the value
-   * `{"type": "object", "properties": {}}`.
+   * Omitting `parameters` defines a function with an empty parameter list.
    */
-  parameters: FunctionParameters;
-
-  /**
-   * A description of what the function does, used by the model to choose when and
-   * how to call the function.
-   */
-  description?: string;
+  parameters?: FunctionParameters;
 }
 
 /**
  * The parameters the functions accepts, described as a JSON Schema object. See the
- * [guide](https://platform.openai.com/docs/guides/gpt/function-calling) for
- * examples, and the
+ * [guide](https://platform.openai.com/docs/guides/text-generation/function-calling)
+ * for examples, and the
  * [JSON Schema reference](https://json-schema.org/understanding-json-schema/) for
  * documentation about the format.
  *
- * To describe a function that accepts no parameters, provide the value
- * `{"type": "object", "properties": {}}`.
+ * Omitting `parameters` defines a function with an empty parameter list.
  */
 export type FunctionParameters = Record<string, unknown>;

tests/api-resources/beta/assistants/files.test.ts

@@ -10,9 +10,7 @@ const openai = new OpenAI({
 
 describe('resource files', () => {
   test('create: only required params', async () => {
-    const responsePromise = openai.beta.assistants.files.create('file-AF1WoRqd3aJAHsqc9NY7iL8F', {
-      file_id: 'string',
-    });
+    const responsePromise = openai.beta.assistants.files.create('file-abc123', { file_id: 'string' });
     const rawResponse = await responsePromise.asResponse();
     expect(rawResponse).toBeInstanceOf(Response);
     const response = await responsePromise;
@@ -23,9 +21,7 @@ describe('resource files', () => {
   });
 
   test('create: required and optional params', async () => {
-    const response = await openai.beta.assistants.files.create('file-AF1WoRqd3aJAHsqc9NY7iL8F', {
-      file_id: 'string',
-    });
+    const response = await openai.beta.assistants.files.create('file-abc123', { file_id: 'string' });
   });
 
   test('retrieve', async () => {