Many ChatGPT Plus users see GPT-5 as a downgrade, prompting OpenAI to restore features and promise higher message limits.

The GPT-5 launch comes as OpenAI faces increasing competition from Google's Gemini models, Anthropic's Claude family, and Meta's open-weight Llama models. OpenAI reports having 5 million paying business users and 4 million developers building on its API platform.

The artificial intelligence company that brought the world ChatGPT says its latest version of the AI-powered chatbot will be more accurate, have fewer hallucinations and offer more articulate writing capabilities for composing emails and reports, for example. ChatGPT-5 will also excel at coding and answering health-related questions.