CPython vs. PyPy: Which Python runtime has the better JIT?

InfoWorld
Jan 28, 2026, 9:00 am258 ptsTop
PyPy, an alternative runtime for Python, uses a specially created JIT compiler to yield potentially massive speedups over CPython, the conventional Python runtime. But PyPy’s exemplary performance has often come at the cost of compatibility with the rest of the Python ecosystem, particularly C extensions. And…

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