search_context_size is supposed to be a parameter in web_search_preview (https://platform.openai.com/docs/guides/tools-web-search?api-mode=responses) and it should adjust the returned number of citations.
I have tried a ton of queries and noticed that they returned similar number of urls regardless of the search_context_size that I specified.
In contrast, when changing this parameter in perplexity api, I do get different numbers of citations. Is this a known bug?