[anuramat]

I thought you still need to implement the patching on your side? judging by <https://platform.openai.com/docs/guides/tools-apply-patch>

[gedy]

You do, but the issue this helps with is it's difficult to get LLMs to return accurate unified diffs, which are valuable if you are editing some larger text via their APIs. The alternative of letting it send back the entire edited text is pretty slow. So them sending an accurate server-side diff (likely from some actual diff tool and not just LLM generated thing that sort of looks like a diff) is really helpful.