# MAX Nightly 26.1.0.dev2026010718 Released

**URL:** https://forum.modular.com/t/max-nightly-26-1-0-dev2026010718-released/2582
**Category:** Nightly
**Created:** [January 7, 2026, 8:15pm UTC](https://forum.modular.com/t/max-nightly-26-1-0-dev2026010718-released/2582 "2026-01-07T20:15:50Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Modular](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.modular.com/modular/32/17_2.png) [@Modular](https://forum.modular.com/u/Modular)
#### Post date: [January 7, 2026, 8:15pm UTC](https://forum.modular.com/t/max-nightly-26-1-0-dev2026010718-released/2582/1 "2026-01-07T20:15:50Z")

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🧑‍🚀 A new nightly version has been released! 🧑‍🚀

See the quickstart guide for installation instructions: [Quickstart | Modular](https://docs.modular.com/max/get-started/#set-up-your-project)

MAX changelog updates:

- All Python wheel URLs are now `https://whl.modular.com/nightly/simple/`.  
If using `uv`, change `--index-url` to `--index`, and if using `pip`, change to  
`--extra-index-url`. For precise commands, see the  
[install guide](https://forum.modular.com/max/packages#install).

- Improved performance for Hopper Matmul when using skinny M shapes. In particular  
when M is between 2 and 64, we see a significant performance boost for specific  
shapes ranging between 10 - 40%.

Mojo changelog updates:

- [stdlib] Add a `from_utf8_lossy` and `from_utf8` constructor for `String`.
- [stdlib] Deprecate `UnsafePointer.offset()` method
- [Stdlib] Fix empty span returning `Codepoint(0)`
- [stdlib] Allow implicit conversion from None to PythonObject
- [stdlib] Make Writer only work with UTF-8 data.
- [stdlib] Make `inlined_assembly` a public API in the `sys` module
- [External] [stdlib] Make Deque conform to Writable, Stringable and Representable
- [External] [stdlib] Adds functionality to spawn and manage processes from exec. file (#74404)

Raw MAX diff: [https://github.com/modular/modular/compare/8f26369e5ebe9d16c2d21a28c5030d6244fe7618...6189fd73d4ad87778c70b45ffba65bf6f3c19404](https://github.com/modular/modular/compare/8f26369e5ebe9d16c2d21a28c5030d6244fe7618...6189fd73d4ad87778c70b45ffba65bf6f3c19404))\>  
Current Mojo changelog: [https://github.com/modular/modular/blob/main/mojo/docs/changelog.md](https://github.com/modular/modular/blob/main/mojo/docs/changelog.md)