Mojo 1.0 Is Here
Modular has officially released Mojo 1.0, marking the language's transition to a stable, production-ready foundation. After years of rapid evolution, Mojo now offers a consistent and predictable development experience, with contributions from nearly 200 community members. This release includes Python-style lambdas, improved LSP stability, and better memory safety diagnostics. Modular also announced plans to open-source the Mojo compiler and toolchain in 2026, and introduced MAX enhancements like support for GLM-5.2 and Nemotron-H models.
Mojo 1.0 does not mark the end of the language’s evolution, but it is an important milestone on a longer journey.
- swiftcoder
I feel like this language would really benefit from some sort of 1-pager overview.
I just spent a fair bit of time on the official site, and I still don't think I have a very good grasp of what problem this language aims to solve, or why I would select it over other similar languages
- redlewel
Don't see the value of using a language with a closed source compiler...
Much better options out there. Python already has libraries like Pydantic that offload performance to functions written in Rust under the hood.
- oceansky
AI generated first image does not give me much confidence.
Lastest OpenCV 5 release notes also had a lot of LLMisms.
I guess that's the new normal. Still, I am very hopeful for Mojo.
- derbOac
Is Mojo being a superset of Python still part of its projected feature set?
I tried Mojo a bit early on and decided to come back to it when it was more complete, and in the interim I read some comments somewhere that the superset-of-Python part was being walked back from.
On https://mojolang.org/docs/roadmap/ it's stated (Phase 3) that "Mojo may or may not evolve into a full superset of Python, and it's okay if it doesn't."
I feel like that "full superset of Python" part was part of the appeal of Mojo.
Personally I'm kind of tired of 97% python-compatible this-and-that. Python itself has enough of a history of incompatibility and the cognitive overhead in switching might be easier with just moving to a totally different language. But maybe not — it depends on the details I guess.
Honestly reading through the documentation more and more I'm more and more confused about what the 1.0 release actually means.
- minraws
> Finally, we will continue to progressively open-source more of the Mojo language, as well as components in MAX that we have built with it. Our commitment remains unchanged – we will open source the Mojo compiler and toolchain in 2026.
Why not now though? Why wait for 4 more months? What magic is there to hide in just making it source available at least.
- alberth
So is the language itself proprietary licensed, with standard library Apache 2?
Am I understanding the current state of things correct?
- twsted
Nothing but respect for Chris, and I understand why founders take these deals. But an acquihire usually means the product is the part that gets left behind, and that's the part I cared about.
- cuzezzzbbfofai
Apparently they'll be open sourcing it on August 18th, one week from now.