ChatGPT has introduced a new feature in its "GPT-5 Thinking" that allows users to select between different reasoning modes: Standard, Extended, Light, and Heavy, depending on their needs and account type. While most users may not need to adjust these settings, advanced users can benefit from greater control over the AI's output speed and depth of reasoning, enhancing their workflow efficiency.

OpenAI has introduced significant upgrades to Codex, making it faster and more reliable for developers. The new GPT-5-Codex is optimized for real-world coding tasks, enhancing collaboration and code review capabilities while integrating seamlessly with various development environments.