Duolingo's shares plummeted by 38% after OpenAI's GPT-5 swiftly developed a language application, intensifying competition in the language technology sector.

In response, OpenAI preserved access to GPT-5 Standard and Thinking models while restoring GPT-4o for ChatGPT Plus customers.

Former Twitter CEO, Parag Agrawal, has launched an AI startup called Parallel Web Systems, aimed at building a web infrastructure for AI systems.

Despite all the criticism, there are things GPT-5 does better than legacy GPT models, especially when it comes to GPT-5 Thinking.