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Status : BETA
Release date: 02 February 2026
Pyrefly v0.51.0 bundles 162 commits from 25 contributors.
| Area | What’s new |
| :---- | :---- |
| Type Checking | - Fixes for incorrect type narrowing in boolean operations with generic functions
- Intersection logic fixed to identify empty intersections (Never) for final classes a...
Status : BETA
Release date: 26 January 2026
Pyrefly v0.50.0 bundles 183 commits from 27 contributors.
| Area | What’s new |
| :---- | :---- |
| Language Server | - Hovering or requesting signature help for constructor calls now shows the instance type instead of -> None
- Structured comment headers (e.g., # Title ----) now cre...
Status : BETA
Release date: 20 January 2026
Pyrefly v0.49.0 bundles 231 commits from 25 contributors.
| Area | What’s new |
| :---- | :---- |
| Type Inference | - Partial type inference now possible in loops
- Variance inference for self-referential generic types (PEP 695)
- typing.Mapping now recognised as a type alias...
Status : BETA
Release date: 05 January 2026
Pyrefly v0.47.0 bundles 207 commits from 35 contributors.
| Area | What’s new |
| :---- | :---- |
| LSP Features | - Improved autocompletion for keys in .get() on TypedDicts
- Improved documentation in hover tooltips for attributes like dataclass fields
- Improved import handli...
Status : BETA
Release date: December 15, 2025
Pyrefly v0.46.0 bundles 125 commits from 19 contributors.
| Area | What’s new |
| :---- | :---- |
| Language Server | - Call Hierarchy support for the Pyrefly LSP server now implemented. This is a fundamental IDE feature that allows users to explore function call relationships in your IDE.
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