This is an unannounced feature. I just discovered by accident that “Web search” can now be enabled in both the browser and the app, and it works!

When Claude 4 was announced on May 22, the official news reported that “Extended thinking with tool use (beta): Both models can use tools—like web search—during extended thinking, allowing Claude to alternate between reasoning and tool use to improve responses.” However, the documentation about web search still talks about “adding the web search tool to your API request”; there’s no place where Anthropic brought the big news:

Claude’s major flaw has now been resolved.

Or rather, there was an announcement on May 20: Claude can now search the web. Except that it read as follows:

Web search is available now in feature preview for all paid Claude users in the United States. Support for users on our free plan and more countries is coming soon.

So I just ignored it.

By revisiting that page, I could see that they have now updated the article to read:

Update: Web search is now available globally on all Claude plans 27 May 2025

But they couldn’t be bothered to issue a new announcement!

Dario, you have to fire the head of your communication or marketing department!

I tried it and it works as expected. It can also access specific URLs. Here’s the conversation in which I tested Claude’s latest feature. It has to do with my previous post.