Elon Musk is apparently willing to let his Grok AI assistant get cozy with Apple Inc. (AAPL)'s Siri. The xAI CEO made the declaration Monday after an X user suggested that Apple should integrate Grok 4.1 with Siri to rescue the increasingly outdated voice assistant.

Musk's response was characteristically brief: "I'm down." That's a notable shift from his earlier stance on Apple's AI partnerships, particularly when the company announced its integration with ChatGPT last year.

The Growing Chorus of Siri Critics

Musk isn't the only one thinking Apple needs to upgrade its voice assistant game. Ross Gerber, co-founder of investment firm Gerber Kawasaki, recently floated the idea that Apple should ditch Siri entirely in favor of Alphabet Inc. (GOOGL) (GOOG)'s Google Gemini. Gerber called a deeper Apple-Google collaboration "destiny," which would certainly be one way to solve the problem.

The suggestions highlight just how far Siri has fallen behind in the AI assistant race, especially as competitors have integrated large language models that can actually hold coherent conversations.

xAI Updates: Merger Speculation and Grok 5 Delays

Meanwhile, Musk continues to hint at a potential merger between Tesla Inc. (TSLA) and xAI, claiming the two companies are "trending towards convergence." That's despite Tesla shareholders voting down a proposal to invest in xAI at the company's annual meeting earlier this month. Reading between the lines, it seems Musk is still angling to bring his AI venture under the Tesla umbrella somehow.

On the product front, Musk shared that Grok 5 won't arrive until the first quarter of 2026, pushing back from the original end-of-2025 target. In the fast-moving world of AI development, that's the kind of delay that can matter.

Bezos Battle Intensifies and Tesla Defense

Musk also found time to take shots at Amazon.com Inc. (AMZN) founder Jeff Bezos, calling him a "copycat" after reports emerged about Bezos launching an AI company called Project Prometheus. The venture would focus on AI applications in aerospace, automotive and scientific research, putting it in direct competition with xAI.

This adds yet another front to the ongoing Musk-Bezos rivalry, which has primarily played out in space through SpaceX versus Blue Origin. Now it's expanding into artificial intelligence, because apparently one competitive arena wasn't enough.

Musk also defended Tesla against criticism from investor Jim Chanos, who questioned the company's limited AI training spending for its Full Self-Driving system. Musk's explanation was straightforward: Tesla held back "because it wasn't yet the Limiting Factor for FSD." In other words, throwing more money at AI training wouldn't have solved the immediate problems the system faced.

Whether any of these AI partnerships or rivalries actually materialize remains to be seen, but Musk's willingness to work with Apple suggests he's keeping his options open as the AI assistant landscape continues to evolve.