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Dev tools · May 8, 2025

Achilles – Automatic profiling and C++ optimization of Python via LLMs

Hey HN! We built Achilles, a tool that automatically accelerates your Python code. It identifies performance bottlenecks, rewrites those functions in optimized C++, and seamlessly patches them into your running program—without you changing a single line of code. In CPU-intensive, loop-heavy tasks, we've observed performance improvements of 100-1000x. Achilles can be installed via pip and works with just a single command. We'd appreciate your feedback, and feel free to give us a star if you find it interesting!

Achilles – Automatic profiling and C++ optimization of Python via LLMs launched on May 8, 2025 with 7 votes, #3,816 of 7,905 launches that month and more than 75% of that year's launches. The site was not reachable when checked in September 2026.

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