mypyc
Shares rank 19 of 26 compilers by recommenders
Compiles type-annotated Python to native C extensions that run faster, often with no code changes. Critics say converting large existing codebases is a big job and speedups are limited.
Compiles type-annotated Python to native C extensions that run faster, often with no code changes. Critics say converting large existing codebases is a big job and speedups are limited.
11 people gave an opinion
- recommend it
- 7
- criticize it
- 4
- approval share
- 64%
Recommended in 5 of 13 months
- November 2025: not recommended
- December 2025: not recommended
- January 2026: recommended
- February 2026: not recommended
- March 2026: recommended
- April 2026: not recommended
- May 2026: not recommended
- June 2026: not recommended
- July 2026: recommended
- August 2026: recommended
- September 2026: not recommended
- October 2026: recommended
- November 2026: not recommended (month in progress)
Why it doesn’t carry the badge
- 7 people recommend itNeeds 10 or more, not met.
- 1.7 recommenders for every criticNeeds 2 to 1 or better, not met.
- Recommended in 5 of 13 monthsNeeds 4 or more, met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
No changes to existing code
“If you want to use the same code unmodified and your code uses type hints, then you should use mypyc”
Comment from 28 Oct 2026 in “Python's experimental JIT to be removed” “it requires no changes to your existing code”
Comment from 29 Oct 2026 in “Python's experimental JIT to be removed” Works well with type hints
“If you want to use the same code unmodified and your code uses type hints, then you should use mypyc”
Comment from 28 Oct 2026 in “Python's experimental JIT to be removed” “if you want that you can use stuff like mypyc + annotations to get that for you”
Comment from 18 Mar 2026 in “Python 3.15's JIT is now back on track” “typing+mypy/mypyc goes a very long way”
Comment from 11 Jul 2026 in “Scarf has moved away from Haskell” Works well in practice
“I've had good success with just using mypyc”
Comment from 27 Oct 2026 in “Python's experimental JIT to be removed” “typing+mypy/mypyc goes a very long way”
Comment from 11 Jul 2026 in “Scarf has moved away from Haskell”
What people warn about
Each mark is one comment
Gains modest compared with alternatives
“mypyc does not support compilation to a native executable and the performance gains were somehow limited to 2x-4x”
Comment from 25 Jun 2026 in “Show HN: Nimic – Pure Python as a systems language with AOT compilation” “We recently swapped out mypyc optimised module for a rust implementation to get a 2-6x speed up”
Comment from 5 Nov 2025 on Hacker News
Other compilers people recommend
The four most recommended other compilers, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| GCC | 138 | 123 | 53% | 12 | 15 yrs9 owners | — |
| Clang | 74 | 50 | 60% | 12 | — | — |
| Free Pascal compiler | 38 | 7 | 84% | 11 | — | Approved |
| GraalVM Native Image | 31 | 9 | 78% | 11 | — | Approved |
| mypycThis page | 7 | 4 | 64% | 5 | — | — |
What people said
8 of the 12 comments that mention it, newest first. Each links to the original comment.
“it requires no changes to your existing code”
“If you want to use the same code unmodified and your code uses type hints, then you should use mypyc”
“A fairly massive undertaking for existing code”
“I've had good success with just using mypyc”
“typing+mypy/mypyc goes a very long way”
“mypyc does not support compilation to a native executable and the performance gains were somehow limited to 2x-4x”
“if you want that you can use stuff like mypyc + annotations to get that for you”
“We recently swapped out mypyc optimised module for a rust implementation to get a 2-6x speed up”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.