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.

OpenAI CEO Sam Altman has warned that the current wave of investment pouring into artificial intelligence could fuel a bubble similar to the dot-com crash of the late 1990s and early 2000s.