New search tool? web_search_2025_08_26 and web_search (vs legacy web_search_preview)

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Looks like we got a new version of the web search tool - has this been announced anywhere? Do we know what is different beyond being able to limit the domains it can use?

https://platform.openai.com/docs/guides/tools-web-search#web-search-tool-versions

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There was a price reduction too:

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Thanks! A little disappointing that X gets updated while the API changelog does not.

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