OpenAI has rolled out GPT-5 as the default AI model powering ChatGPT, bringing new features designed to boost productivity for personal and business users.

The new model seamlessly switches between quick search and in-depth reasoning, allowing more fluid and intelligent responses. Users can prompt ChatGPT to 'think hard' to trigger the deeper reasoning mode.

ChatGPT Plus users now benefit from double the previous message limit, with 160 messages allowed every three hours. Meanwhile, Team and Pro plan subscribers enjoy unlimited GPT-5 access unless accounts are misused.

Free users have a limit of 10 messages every five hours and one daily 'Thinking' mode message. Older GPT models such as GPT-4.1 and GPT-3 have been discontinued but remain accessible via web settings for paying customers.

All built-in tools are automatically enabled according to user needs, removing the need to toggle features like web search, image generation, or data analysis on and off. OpenAI also revealed plans to support third-party plugins to expand ChatGPT's development capabilities further.

The new voice mode now follows instructions more accurately and will be available to all users.

Overall, GPT-5 marks a significant leap forward, improving reasoning, creativity, and alignment with user intent. OpenAI aims to make ChatGPT an even more powerful assistant by integrating enhanced capabilities and streamlining the user experience.