Wall Street analysts are confident the artificial intelligence boom still has room to run. Even if Sam Altman, the OpenAI chief executive at the center of it all, appears less confident.

Many fears of an AI bubble had hit a fever pitch at the start of this year when Chinese start-up DeepSeek released a competitive reasoning model.

Sam Altman’s remarks come amid growing concerns by analysts and industry stakeholders about the pace of investment in AI and data centres moving too fast.