Tech giants Amazon, Google, Meta, Microsoft, and Elon Musk's xAI have invested billions into AI since ChatGPT's launch in 2022. Chinese startup DeepSeek recently introduced a high-performance model using less costly chips, causing a stir in the industry. According to PhD-level expert Jason Altman, ChatGPT-5 is the first model that feels like talking to a PhD-level expert, with capabilities in coding, writing, and healthcare. However, British AI expert Simon Willison found it "just good at stuff" without a dramatic leap ahead from other large language models. OpenAI's safety research lead Alex Beutel emphasized that ChatGPT-5 is trained to be trustworthy and honest, generating "safe completions" that stick to high-level information.