Nördnytt! 🤓Muse Spark Open
https://huggingface.co/meta-models/Muse-Spark-Open-816B-A42B
https://9to5mac.com/2026/10/15/meta-launches-new-muse-spark-...
- a11r - 14309 sekunder sedanArtificial analysis shows this: underperforming Qwen3.8 Flash Next and GLM 5.3 Flash, both of which you can run on a single B300 . I think Meta has a bit of catching up to do in the open-weight space.
As an aside, it's really unfortunate that artificial analysis only provides comparison at the highest reasoning level, which is mostly unusable for high-volume production use cases. I would really like them to start providing comparisons at low and medium reasoning levels across these models because those tend to be the ones that actually get used in production.
- seizethecheese - 14821 sekunder sedanSince there are many comments here arguing that this is not open weight, I looked at the license. Basically, you're free to use this except this clause:
> If the Licensee or any of its affiliates provide a third party with access to artificial intelligence models as a product or service, via API or a similar interface, where the third party receives outputs of such models (“Model as a Service”), and the aggregate gross revenue of the Licensee and its affiliates exceeds twenty (20) million US dollars (or the equivalent in other currencies) during any consecutive twelve (12) month period, the Licensee must notify Meta and enter into a separate written agreement with Meta before offering the Software or any Derivatives as part of that Model as a Service business. This Section 3 does not apply to (a) internal use, research, or any commercial activity that is not Model as a Service, or (b) the Licensee's use of the Software as a component to power features of the Licensee's own product or service that is not a Model as a Service.
They're allowing the use of this in commercial products, just not selling the model directly.
- armcat - 18883 sekunder sedanThey've done considerable effort in making sure this model can run on basically every model runner, from Unsloth to MLX, https://dev.meta.ai/docs/muse-spark-open/deploy
- swalsh - 18061 sekunder sedanLike I said last week. I think zucks original llama thesis is proving more correct by the week. The rent market on intelligence never materialized, if you have THE frontier model, you can charge rent (for a few weeks, maybe month). But after a certain capability level it's price that drives the decision.
Zuck is doing the thing he's really good at, and building a moat around the network (Muse is VERY sticky), and now that we're all going to standardize on Meta's model, we're going to optimize the heck out of the infra to run the model making it cheaper for him to scale, thus bringing in more participants to his network, and thus making his network more valuable.
Meta is going to win consumer AI.
- simonw - 11675 sekunder sedanPelicans for low, medium, high, and xhigh: https://tools.simonwillison.net/markdown-svg-renderer?url=ht...
I had to run them via OpenRouter - I don't have access to a machine that can handle this size of model.
For comparison:
Muse Wonder: https://tools.simonwillison.net/markdown-svg-renderer?url=ht...
Muse 1.3: https://tools.simonwillison.net/markdown-svg-renderer?url=ht...
And this one from Meta AI's previous open weight model, Muse Glimmer, which DID run on my laptop: https://tools.simonwillison.net/markdown-svg-renderer?url=ht...
- popinman322 - 17824 sekunder sedanThe model license requires large inference providers to contact Meta separately to obtain a license to serve the model. I know we've seen this before with other large models, but it's still a bit irritating.
The usual effect of separate licensing is decreased price competition from public providers (like we saw with Kimi K3). I guess it's better for the providers if the price is fixed: any efficiency improvements directly improve margin rather than driving prices down over time. Still, to provide my own anecdata, the main thing keeping me on a paid subscription is token costs for the more capable models.
- devy - 16246 sekunder sedanre: "Apple’s unified memory architecture lets the M5 Ultra's integrated GPU use up to 512 GB per Mac Studio, so two machines can hold an entire model. And the chip’s 1.2 TB/s of memory bandwidth is fast enough to read the small slice each token needs. The result is two Mac Studios behave like one supercomputer with a terabyte of unified memory."
At the current market price of Apple Mac Studio Ultra, 30-core CPU + 64-core GPU w/ 256GB RAM is already reaching at around $10k. Keep in mind that computers are appreciating assets recently.
The 512GB RAM option is not even for sales yet (they said late October availability). Based on typical Apple pricing, it's likely to be around $14k apiece. So we are looking at least $28k - $30k for the setup Muse team is advertising. That's essentially the Nvidia H100 GPU w/ 96GB VRAM/HBM3 at up to 3.94 TB/second memory bandwidth, 3x+ than Mac Studio's Unified Memory speed.
Also, how did Meta get access to Apple's unreleased M5 Ultra w/512GB RAM Mac Studio? Or is that simply a marketing piece that they wrote purely on specs?
- GodelNumbering - 14730 sekunder sedan39 on AA[1], about the same as Deepseek v4.1 flash and Mimo 2.5 Flash. Behind Glm 5.3 flash and Qwen3.8-Flash-Next [2]
[1] https://artificialanalysis.ai/models/muse-spark-open
[2] https://artificialanalysis.ai/models/open-source?models=mimo...
- zkrhass_ - 10791 sekunder sedanIt seems like meta and mistral are both hedging their "best" claims geographically because they've realized they don't have to even beat deep seek anymore, they can just win customers by being "the best one I'm allowed to use".
- octomind - 8835 sekunder sedanFinally democratizing AI access to, checks notes, people with no less than two Apple M5 Ultra Studios on their desktop.
- nirav72 - 16650 sekunder sedanHow does this compare to Muse Spark 1.3 contribute? I've used Spark 1.3 a lot lately , since its currently free to use via OpenCode. I haven't had the best experience in the past with models from Meta. But Spark 1.3 is has been surprisingly great. Especially for tool calling.
- loeg - 2904 sekunder sedanPrevious discussion of Meta models / open weight / llama:
https://news.ycombinator.com/item?id=49541256
https://news.ycombinator.com/item?id=49216946
https://news.ycombinator.com/item?id=48767058
Others?
- minimaxa - 2935 sekunder sedanThis seems like advertising, which breaks HN rules?
Make sure that Meta reads the policies on self-promotion:
https://news.ycombinator.com/showhn.html
HN should impose a 2-post-per-month rule on all Meta posts as they do to their users!
If Meta would like more posts per month, they should donate 80 billion to an approved charity, instead of flushing it down the drain.
- jjcm - 12383 sekunder sedanImage->html test for muse spark open.
Original designs: https://diffui.ai/app/canvas/5093e689-1e74-4f26-b632-2a4500f...
Muse Spark Open: https://html.non.io/lcars-muse-spark/
Opus 5.5 (sota): https://html.non.io/lcars-opus-5.5/
Overall it actually does pretty solid. It doesn't completely follow the design, but it gets the vibe. It's one of the best open models I've seen for conversion, which is impressive.
- itissid - 14644 sekunder sedanI think a lot of people in this thread are openly dismissive: "oh its just open claw, anyone can and many have build that".
I think what they are missing is the fact that there are not that many teams in the world that can deploy muse like product to A/B test a lot of hypothesis at the scale meta can at scale. I mean even if you could get to scale with DC you need a reason for people to use your product.
My mom and dad and their family have never heard of Claude and don't use chat gpt except once in a while as a search engine. But meta will figure out a way to insert this into modals and feeds to make people stumble and stick on it.
I am no meta fan, but I think people underestimate how fast product uptake there is for non Dev harness.
- itsmeduncan - 15322 sekunder sedanThis is great progress for "open-weight" models. Quotes due to the restrictions, but still progress none-the-less. Looking forward to seeing any quants that all mere mortals to run this at home without early access Apple hardware.
- TomGarden - 11442 sekunder sedanThe exciting thing about this is in them optimizing for inference on Macs. This, and optimization for other consumer hardware, is where local AI needs to go
- modeless - 15035 sekunder sedanIn terms of performance it seems like this has somewhat worse benchmarks than Muse Spark 1.3, closer to 1.2 but not the same. Of course significantly worse than Muse Wonder Full.
- hypfer - 11629 sekunder sedanIt would be nice if the other players in the market would do the same and release yesteryears models as something to run at home.
Especially for all the people that got emotionally attached to specific checkpoints and their.. uh.. "character".
- brisket_bronson - 8163 sekunder sedan> We believe the future is for everyone
Okay...
> run on your desktop using two Apple M5 Ultra Mac Studios with the latest MLX framework
Who is this "everyone"?
- montroser - 16213 sekunder sedanWell, this is much better than nothing -- we should be grateful that whatever the market conditions and corporate incentives, a major lab is releasing a capable open-weight model. But still very far behind DeepSeek and GLM. Even on consumer hardware, Qwen 3.8 27B is going to compare favorably to this.
- meerita - 16408 sekunder sedanIt's really nice that all AI pages are using canvas animations. A few days ago, Gemma 4's animation wasn't that impressive. Same with Muse. So far, the best animations I've seen are from OpenAI and Anthropic.
- bitexploder - 16278 sekunder sedanEhm.. I have a model that runs on my older gaming desktop that scores as well (or better) as this model does on DeepSWE. This model does better than Flash Next in many areas and I am sure is much stronger overall, but hmm.
- brudgers - 9252 sekunder sedanIs it easy to use Muse to remove all the kinds of crap I don’t want in my Facebook feed?
Asking for a friend.
- I_am_tiberius - 15524 sekunder sedanIt's not open!!!
- ansnadeem - 15458 sekunder sedanI'm super impressed by how meta has gotten back in the race. They weathered* the storm and actually came out with really good models and products.
- markstos - 11965 sekunder sedan“We believe AI is for everyone” *who can afford two M5 Studios with a total of 1 terabyte of memory.
- antaviana - 13669 sekunder sedanWhat is the main driver for anyone to give away their hard earned weights? What is the catch?
- felineflock - 12262 sekunder sedanUD-IQ1_S is 180Gb. UD-Q4_K_XL is 510Gb. Still beyond the average prosumer.
- shinokami - 19035 sekunder sedani love seeing major ai labs release open-weight models. really hope we'll see more of this from openai and eventually anthropic too.
- tintor - 14957 sekunder sedanThis is not an open model. License is not open license, and only weights are provided.
- krawat3 - 15191 sekunder sedanWhat kind of hardware does one need to run this model? Like a small datacenter node?
- AuthAuth - 16532 sekunder sedanNice a Mastodon shoutout.
- karahime - 15671 sekunder sedanGlad that Meta is back on the open weights train in force.
- sorenjan - 14571 sekunder sedanWho would have thought that one of the top American tech companies would boast about how their latest product is the best in class in the US, not the world, because they're behind China.
- eknkc - 15031 sekunder sedanFeels dumber than GLM 5.3 (only open model I use extensively). But is really fast (fireworks.ai).
Only checked a single, large prompt that already ran today on claude and glm though..
- redox99 - 13003 sekunder sedanIt performs worse than Muse Spark 1.3 and 1.2. And it has an outdated attention mechanism which at 1M tokens will need over 200GB just for the KV cache.
Very disappointing release. We're lucky to have Chinese models.
- xnx - 15409 sekunder sedanWhy is Gemma not in the comparison table?
- ecommerceguy - 388 sekunder sedanYawn.
- sourcecodeplz - 16373 sekunder sedanfrom what i understand its somewhere between muse spark 1.3 and 1.2 in some coding benches.
- tintor - 15068 sekunder sedanGiven exposed benchmaxxing of several past models from Meta,
I don't trust any benchmark numbers from Meta anymore.
- spwa4 - 15931 sekunder sedanhttps://huggingface.co/meta-models/Muse-Spark-Open-816B-A42B...
816B model, A42B active parameters
Unsloth and Meta have guides on how to run the model, but allow me to summarize: You & Me won't be running this one.
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- dcchambers - 12693 sekunder sedanI don't think this is going to change anything for most people, but it certainly fits a niche for US-based companies that refuse to run Chinese models and only want to run their own inference.
But I'm really happy to see Meta do this and I hope they continue to release open models in the future. Open models are really the only way to ensure fair access to AI for everyone.
- lern_too_spel - 13052 sekunder sedanWhat is the point of releasing "The Most Capable US Open‑Weight Model?" I can understand why I might care about the location of a model serving provider, but why should I as a model user care about the location that an open weights model was trained?
- sgt101 - 15071 sekunder sedanSo: WAR!
- jahrichie - 8638 sekunder sedanGood luck running that on your home infra lol, requires 25k in mac minis
- aaroninsf - 15564 sekunder sedanNever meta.
Do not run, do not support, do not use.
- Exoristos - 17928 sekunder sedan"Muse Spark Open was optimized to run on Mac Studio with M5 Ultra, and together they’re the best way to run a powerful model on your own desktop."
- IshKebab - 15489 sekunder sedanI tried Muse Spark 1.3 for a while because it's so cheap, but it's definitely in a lower league than Astra, Opus 5.5 and Argon. Still produces slop if you try and vibe code with it, whereas the more capable models write good code.
- cute_boi - 16860 sekunder sedancan we stop these safety risk.... Feels like gpt 2/3 days, and now we know there wasn't any safety issue with gpt 2/3....
- chriddyp - 6515 sekunder sedan[dead]
- podnami - 9737 sekunder sedan[flagged]
- antmaper - 6762 sekunder sedan[dead]
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- nico - 15382 sekunder sedanBut does it play doom? /s
PS: I might need to do a doom benchmark, that’d be fun https://playground.jeffyclassify.com/#doom
- muzaffermahi - 10877 sekunder sedan[dead]
- binlog - 15372 sekunder sedanTech people really are drug addicts. Rant about Zuck and Meta for 364 days a year and then jump over each other to be first in line the moment he shows something shiny.
- vatsachak - 16154 sekunder sedanZuck is the good guy here. Damn
- osiris970 - 17008 sekunder sedanUS OPEN WEIGHT IS NOT DEAD THANKS ZUCK
- maxdo - 17685 sekunder sedangreat, I've been reading series of papers related to open source/open weight LLM Backdoors.
It's 100% possible, curious when will be the first incident.
Having something built by entity with HQ in the wester world is always a bit safer. That could be mistral, but they decided to be a consultancy company, not an ai lab.
- kentm - 14314 sekunder sedanAs an aside I really wish people would stop naming their new software projects “Spark” given how many things already use that name.