The o1 Pro tool from OpenAI is gaining traction among developers for its ability to enhance productivity in coding tasks. Users report that it has significantly changed their workflow, with some claiming it has made them three to five times more productive. Notable features include the integration of RepoPrompt, which allows users to provide context and custom instructions in a single prompt, streamlining the coding process. Other users have praised o1 Pro for its reliability in handling complex architecture-level decisions and multi-file changes, highlighting its effectiveness compared to previous AI tools. The tool has been compared favorably to Whisper and other advanced AI systems, with many considering it a vital asset for modern development practices.