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
Having written a lot of Mojo over the last two year, just for fun, it's a really cool language. Ownership model adjacent to Rust, comptime in the realm of Zig, rich type system, first class SIMD support, etc.
Performance wise it's the first language in long time that isn't just an LLVM wrapper. LLVM is still involved, but they are using it differently than say, Rust or Zig.
Very excited for Mojo once it's open sourced later this year.
It's supposed to be (currently) a fully native, Python-like language, but for GPUs primarily. Though I am seeing it as having a future as a fully native Python alternative that might get interesting.
I hope with 1.0 (havent fully read the article yet) they stop breaking language features / syntax because they did quite a few different changes over time, their overall goal is to be a fully native superset of Python.
I do see this one overtaking Nim over time, which kind of saddens me, because I like Nim for what it is, but Mojo trying to be a superset of Python is a no-brainer for most Python developers. Reminds me of how a lot of Go devs were former Python devs not C++.
I mean, it feels like "Python, but aiming at a completely different vertical that values native compilation and a borrow checker"? Which is not quite the same thing
I know right? Would be better to have a banner with the language logo than some totally out of place aislop image, almost makes you think this is a random person's blog and not the official Mojo site
I believe Mojo has been primarily using AI-generated imagery of its mascot for several years now, which politically aligns with its pivot to being a language for AI development.
They’ve had this branding for some years, at least since 2023. I doubt at that time it was fully AI generated, although I have no proof of it. I always looked at it as being heavily AI inspired.
Isn't Mojo expressly for building AI frameworks? It isn't really needed or special as a language by-itself. It's main purpose is to make it easier to program these high end graphics cards for AI.
> 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.
> Weird to release 1.0 without it. What are they waiting for?
Hmm, I've been under the impression that at one point they said it'd be 100% FOSS by the time 1.0 hits, but maybe I misunderstand/misremember the details. But I remember they'd said it'd be FOSS in connection with 1.0, seems weird to do it this way instead of waiting until it's all FOSS then cut 1.0.
I think they are waiting for a wild success in adoption, and if that doesn't happen they can use the IP to pivot to something else without giving the core away to anyone for free/as open-source.
C and C++ were closed source for quite some time, they still are in places like commercial embedded OSes and console dev kits, even when they happen to be GCC and clang forks nowadays.
Clang actually has replaced most GCC forks exactly because vendors can keep the fork closed source.
Sure but at those times C and C++ had no immediate replacement, and if you were doing embedded C/C++ was your only option.
The same cannot be said for Mojo.
The C compiler source came with the AT&T UNIX tape ... it wasn't open source because FOSS didn't exist at the time and it was under a proprietary license, but it was not "closed source". Parts of MOJO, OTOH, are closed source because the source has not been released.
> 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.
> They should show some performance comparisions between PyTorch and Mojo, PyTorch+kernel compilation + Triton vs Mojo, ThunderKittens vs Mojo.
The fact that they release 1.0 without doing this, I think says a lot. I personally haven't even started looking into Mojo because of the closed source stuff, but usually you can tell what's going on by looking for what's obviously missing.
Aren’t they already separated? Max is an inference runtime, written in Mojolang, which uses the MLIR compiler chain to target diverse accelerator hardware.
The premise of Mojo used to be that it was a superset of Python so in theory LLMs would benefit from that but I'm not sure how much divergence there's been
Creating a new language in the age of AI seems kind of pointless. I don't write code by hand anymore, I only review it and I prefer it to be in a language which I already know since investing time in learning another language doesn't make sense at this point.
And Mojo will die because nvidia is not interested in maintaining any semblance of backwards compatibility when it comes to CUDA. It's going to be a perpetual race forwards, and whenever nvidia upgrades CUDA, you're going to be stuck there twiddling your thumbs and waiting for Mojo to become compatible.
Additionally, anyone who has seen how Swift evolved should be wary of Lattner saying "the language is mostly stable", or even "the language is released".
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
Having written a lot of Mojo over the last two year, just for fun, it's a really cool language. Ownership model adjacent to Rust, comptime in the realm of Zig, rich type system, first class SIMD support, etc. Performance wise it's the first language in long time that isn't just an LLVM wrapper. LLVM is still involved, but they are using it differently than say, Rust or Zig.
Very excited for Mojo once it's open sourced later this year.
It's supposed to be (currently) a fully native, Python-like language, but for GPUs primarily. Though I am seeing it as having a future as a fully native Python alternative that might get interesting.
I hope with 1.0 (havent fully read the article yet) they stop breaking language features / syntax because they did quite a few different changes over time, their overall goal is to be a fully native superset of Python.
I do see this one overtaking Nim over time, which kind of saddens me, because I like Nim for what it is, but Mojo trying to be a superset of Python is a no-brainer for most Python developers. Reminds me of how a lot of Go devs were former Python devs not C++.
Python, but good.
So, without significant indentation?
I mean, it feels like "Python, but aiming at a completely different vertical that values native compilation and a borrow checker"? Which is not quite the same thing
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.
I know right? Would be better to have a banner with the language logo than some totally out of place aislop image, almost makes you think this is a random person's blog and not the official Mojo site
I believe Mojo has been primarily using AI-generated imagery of its mascot for several years now, which politically aligns with its pivot to being a language for AI development.
Oh wow a business pivoted to AI what a shocker lmao (not directed at you/mocking you, to be clear)
I spotted the exact same thing with the AI image. makes the whole thing immediately feel cheap, it's wild
They’ve had this branding for some years, at least since 2023. I doubt at that time it was fully AI generated, although I have no proof of it. I always looked at it as being heavily AI inspired.
"Normal" keeps getting more and more depressing.
Did they think that image would make them look fun or interesting? Because it's exactly the opposite.
Isn't Mojo expressly for building AI frameworks? It isn't really needed or special as a language by-itself. It's main purpose is to make it easier to program these high end graphics cards for AI.
So maybe an AI image isn't the worst.
People who work with AI all the time should be the most finely tuned in to how sloppy it looks and when to use it and when not.
> I guess that's the new normal.
Yes, so basing confidence on it is totally bogus. Such comments are cheap and add nothing to the discussion of Mojo reaching 1.0 status.
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.
The point is that Mojo compiles to MLIR for programming on heterogenous compute and GPU so something like Pydantic isn't really comparable here.
The alternatives would be stuff like CUDA
> 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.
It's categorically uninteresting until and unless that happens. Weird to release 1.0 without it. What are they waiting for?
> Weird to release 1.0 without it. What are they waiting for?
Hmm, I've been under the impression that at one point they said it'd be 100% FOSS by the time 1.0 hits, but maybe I misunderstand/misremember the details. But I remember they'd said it'd be FOSS in connection with 1.0, seems weird to do it this way instead of waiting until it's all FOSS then cut 1.0.
https://news.ycombinator.com/item?id=48057901#48068126
Make of that what you will.
I think they are waiting for a wild success in adoption, and if that doesn't happen they can use the IP to pivot to something else without giving the core away to anyone for free/as open-source.
This exactly. Doesn't scream confidence that its still closed upon release.
People to tune in to the conference, probably.
The value has already been materialized. They were acquired by Qualcomm for $3.9 billion.
C and C++ were closed source for quite some time, they still are in places like commercial embedded OSes and console dev kits, even when they happen to be GCC and clang forks nowadays.
Clang actually has replaced most GCC forks exactly because vendors can keep the fork closed source.
Sure but at those times C and C++ had no immediate replacement, and if you were doing embedded C/C++ was your only option. The same cannot be said for Mojo.
There were competitors. Pascal and assembly, most obviously.
It was just a different culture. There was no expectation that everything should be free.
In that regard yes, personally I think Mojo has lost its opportunity, but not due being commercial.
AMD/NVIDIA/Intel now having first class support for Python DSLs or GPU JITs for their APIs, and Julia as well.
The C compiler source came with the AT&T UNIX tape ... it wasn't open source because FOSS didn't exist at the time and it was under a proprietary license, but it was not "closed source". Parts of MOJO, OTOH, are closed source because the source has not been released.
Their website has a banner suggesting news about open sourcing of the compiler at some Aug 18 convention.
> 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.
It's probably very messy and not a great baseline for outside contributors to start create PRs.
That's the favorable interpretation, atleast.
They could go the sqlite route for it then, no outside code but let us have a look
So is the language itself proprietary licensed, with standard library Apache 2?
Am I understanding the current state of things correct?
Mojo may be interesting to me, but they should really split it from Max, which is some closed stuff I'm not interested in.
They should show some performance comparisions between PyTorch and Mojo, PyTorch+kernel compilation + Triton vs Mojo, ThunderKittens vs Mojo.
> They should show some performance comparisions between PyTorch and Mojo, PyTorch+kernel compilation + Triton vs Mojo, ThunderKittens vs Mojo.
The fact that they release 1.0 without doing this, I think says a lot. I personally haven't even started looking into Mojo because of the closed source stuff, but usually you can tell what's going on by looking for what's obviously missing.
Aren’t they already separated? Max is an inference runtime, written in Mojolang, which uses the MLIR compiler chain to target diverse accelerator hardware.
closed source ngmi
the 1.0 release of Mojo, it's a pretty big event, of course first thing I'm greeted with is an AI slop image on the top of the blog post
awesome
The main downside is that usually I only choose languages that the LLM is extremely good at. (however I avoid dynamically typed).
But I hope they succeed, it's a very interesting approach. Then I will jump on it later on. S
The premise of Mojo used to be that it was a superset of Python so in theory LLMs would benefit from that but I'm not sure how much divergence there's been
Are there any benchmarks on which languages models perform best?
Interesting. Heard about Mojo a few years now, never really tried it. My Python brain cannot really write C++ or Rust but still need the performance.
You may have heard of it already, but Nim has existed in this space for some time.
Nim could do better with more than just 1 or 2 brilliant developers
Clear, useful, done
Hurray!
never has their been a language release so uninspiring
Creating a new language in the age of AI seems kind of pointless. I don't write code by hand anymore, I only review it and I prefer it to be in a language which I already know since investing time in learning another language doesn't make sense at this point.
Do you know CUDA or Triton? The point of Mojo was to replace GPU kernel programming langs with a Pythonic one that was more familiar
And Mojo will die because nvidia is not interested in maintaining any semblance of backwards compatibility when it comes to CUDA. It's going to be a perpetual race forwards, and whenever nvidia upgrades CUDA, you're going to be stuck there twiddling your thumbs and waiting for Mojo to become compatible.
Additionally, anyone who has seen how Swift evolved should be wary of Lattner saying "the language is mostly stable", or even "the language is released".
Pointless? If compiled mojo is faster, more memory-safe, and more hardware independent, that doesn’t seem pointless at all to me.
(And now in the age of LLMs, the barriers to get started with a new programming language are lower than ever)
this language predates the rise of "AI" (you probably mean harnessed LLMs, but I'll forgive you) by several years. This is the 1.0 release.
This is the team behind MLIR, they have been in this field for 10 years or so.