Pyston

What it is

Pyston is a high-performance Python runtime that uses Just-In-Time compilation to speed up execution. It aims to provide faster performance without requiring changes to the codebase, making it suitable for applications where performance is critical.

Pyston stands out as a high-performance alternative to standard Python runtimes, offering significant speed improvements through JIT compilation without the need for code modifications.

When it fits — and when it doesn’t

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

1. 01

   Limited third-party library compatibility

   Pyston may not fully support all C extensions used by popular Python libraries, leading to potential runtime errors or performance degradation.

2. 02

   Performance gains are inconsistent across different workloads

   The JIT compilation benefits vary significantly depending on the nature of the application; some applications may see minimal improvements while others may experience significant speedups.

3. 03

   Small and less active community support

   Pyston's open-source community is relatively small, which can lead to slower resolution of issues and limited user-contributed documentation or examples.

What it does well

• Uses JIT compilation for performance improvements.

• Aims to be drop-in replacement for CPython without code changes.

• Focuses on high-performance execution of Python applications.

Pricing

Free tier

YesOpen source — free to use

Paid from

$0

Model

Flat rate

Enterprise plan

No

Pricing not independently confirmed — check the vendor’s page.