PJ McDonnell/Shutterstock Meta has spent the last couple years giving its self-titled AI chatbot prominent placement in its apps and now it's Threads' turn. The company is starting to test a new feature that gives the Meta AI chatbot Grok-like functionality on Threads, with the ability to reply to posts with additional "context." To do this, Meta AI is getting an official Threads account (@meta.ai) that users can chat with alongside their other conversations in the app. The feature, which the company describes as an "early beta" will be rolling out first to Threads users in Malaysia, Saudi Arabia, Mexico, Argentina, and Singapore. The premise sounds a lot like the original intention of Grok. Meta suggests that users could ask questions like "why are people talking about the World Cup this month?" and Meta AI will be able to publicly reply. Users can also invoke Meta AI in replies to other posts.…