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  • Show HN: Plandex v2 – open source AI coding agent for large projects and tasks

    Posted: 2025-04-16 21:26:42

    Plandex v2 is an open-source AI coding agent designed for complex, large-scale projects. It leverages large language models (LLMs) to autonomously plan and execute coding tasks, breaking them down into smaller, manageable sub-tasks. Plandex uses a hierarchical planning approach, refining plans iteratively and adapting to unexpected issues or changes in requirements. The system also features error detection and debugging capabilities, automatically retrying failed tasks and adjusting its approach based on previous attempts. This allows for more robust and reliable autonomous coding, particularly for projects exceeding the typical context window limitations of LLMs. Plandex v2 aims to be a flexible tool adaptable to various programming languages and project types.

    Summary of Comments ( 51 )
    https://news.ycombinator.com/item?id=43710576

    Hacker News users discussed Plandex v2's potential and limitations. Some expressed excitement about its ability to manage large projects and integrate with different tools, while others questioned its practical application and scalability. Concerns were raised about the complexity of prompts, the potential for hallucination, and the lack of clear examples demonstrating its capabilities on truly large projects. Several commenters highlighted the need for more robust evaluation metrics beyond simple code generation. The closed-source nature of the underlying model and reliance on GPT-4 also drew skepticism. Overall, the reaction was a mix of cautious optimism and pragmatic doubt, with a desire to see more concrete evidence of Plandex's effectiveness on complex, real-world projects.