GPT-5.4 REPORTEDLY BRINGS A MILLION-TOKEN CONTEXT WINDOW AND AN EXTREME REASONING MODE

Summary from the TLDR AI newsletter

OpenAI's upcoming GPT-5.4 model will have a one-million-token context window, putting it on par with Google and Anthropic's offerings. The model will feature an 'extreme' thinking mode that lets it burn significantly more compute on tough questions. It is expected to be more reliable and make fewer mistakes on longer tasks that can run for several hours. OpenAI's more frequent model release cadence is designed to keep expectations in check. The hype around GPT-5's launch set a high bar that was nearly impossible to clear, and the company's user growth has recently fallen short of internal projections.