# OpenAI: value can now return "gif", "svg"

> Source: <https://driftwatch.et/changes/openai-2026-11-05-c283d743>
> Published: 2026-11-05 01:32:39+00:00

## What changed

Producer-side tools call this additive. It breaks exhaustive switches, strict parsers and generated client enums.

Affects this value on `BetaImageOutputFormat` reachable from 6 operations.

New values: `gif`, `svg`.

can now return "gif", "svg"

## Who is affected

Code that reads OpenAI's BetaImageOutputFormat objects, used by 14 OpenAI operations.

## Before and after

| Where | Before | After | 
|---|---|---|
| BetaImageOutputFormat | "jpeg", "png", "webp" | "gif", "jpeg", "png", "svg", "webp" | 
| BetaImageGenTool.output_format | "jpeg", "png", "webp" | "gif", "jpeg", "png", "svg", "webp" | 
| ImageGenToolCall.output_format | "jpeg", "png", "webp" | "gif", "jpeg", "png", "svg", "webp" | 
| BetaImageGenToolCall.output_format | "jpeg", "png", "webp" | "gif", "jpeg", "png", "svg", "webp" | 
| ImageGenTool.output_format | "jpeg", "png", "webp" | "gif", "jpeg", "png", "svg", "webp" | 
| ImageOutputFormat | "jpeg", "png", "webp" | "gif", "jpeg", "png", "svg", "webp" | 
| ImagesResponse.output_format | "jpeg", "png", "webp" | "gif", "jpeg", "png", "svg", "webp" | 

## Code that breaks

```
switch (response) {
  // existing branches …
  // no branch for "gif"
  // no branch for "svg"
  default:
    throw new Error("unexpected value");
}
```

Based on OpenAI’s published API specification. [How severity is decided](https://driftwatch.et/method).