Python 3.14 Introduces a New Interpreter to Boost Performance by Up to 30%

Python 3.14 is cooking up something big under the hood — a brand-new interpreter that could speed up your code by up to 30%!

But what’s changed?

In this video, we break down:

- What’s new in Python 3.14's interpreter
- What tail calls are
- Why CPython still doesn’t optimize tail calls in your code
- How internal tail calls and tiny opcode functions make things faster
- Why this matters for performance — even if you don't change a single line of code

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