OpenAI's Codex is reportedly testing a new "Ultra-Fast mode" that could enhance code generation speed by up to five times, according to monitoring by Beating. This development aims to address the current challenge in AI programming where developers experience delays despite the models' processing capabilities. The new mode could make AI-assisted coding more akin to pair programming with another human. Previously, Codex's "Fast mode" faced criticism for being only marginally quicker, as it primarily prioritized server resources, affecting regular users' experience. The introduction of "Ultra-Fast mode" is seen as a response to these criticisms, potentially offering a significant improvement in speed and efficiency for developers.