Responses API: ResponseTextAnnotationDeltaEvent removed in SDK 4.103.0

[weevilgenius]

Confirm this is a Node library issue and not an underlying OpenAI API issue

• This is an issue with the Node library

Describe the bug

Typescript complains about streamed events from the responses API with type response.output_text.annotation.added using SDK 4.103.0. There is no issue in 4.102.0 and earlier.

> tsc

src/index.ts:18:10 - error TS2678: Type '"response.output_text.annotation.added"' is not comparable to type '"response.audio.delta" | "response.audio.done" | "response.audio.transcript.delta" | "response.audio.transcript.done" | "response.code_interpreter_call.code.delta" | ... 47 more ... | "response.reasoning_summary.done"'.

18     case 'response.output_text.annotation.added':
            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Found 1 error in src/index.ts:18

To Reproduce

1. Make a streaming request using the responses API.
2. Iterate over the events in the response stream.
3. Attempt to use 'response.output_text.annotation.added' with event.type.
4. Observe typescript error.

Code snippets

// simple program to reproduce
import { OpenAI } from 'openai';

async function main() {
  const openai = new OpenAI({ apiKey: process.env.OPENAI_API_KEY });
  const response = await openai.responses.create({
    model: "gpt-4.1",
    input: "Why is the sky blue?",
    stream: true,
  });

  for await (const event of response) {
    switch (event.type) {
    case 'response.output_text.annotation.added': // this fails to compile in v4.103.0
      break;
    }
  }
}

main();

OS

macOS

Node version

Node v22.12.0

Library version

openai v4.103.0

[weevilgenius]

Looks like ResponseTextAnnotationDeltaEvent was removed in commit f3c6ba8

The release notes for 4.103.0 do not mention any changes to annotations.