Z.ai confirms speculation that Ox Alpha is a new iteration of its GLM series and releases the weights for it; Ox Alpha topped OpenRouter's leaderboard
The new AI model that's swept to the top of online usage charts with high performance at zero cost was created by China's Z.AI Co., also known as Zhipu.
Bloomberg Luz Ding
Related Coverage
- Behaviorally Fingerprinting Ox Alpha's Provenance and Censorship CTGT
- Z.AI confirms Ox Alpha is a GLM model, plans to release its weights RuntimeWire
- Z.ai confirms Ox Alpha is a new GLM-series model and will release its weights Hacker News
- Surprise: Z.ai is the AI lab behind the mysterious Ox Alpha model TechCrunch · Rebecca Bellan
- Mystery solved: Chinese lab Z.ai says it's behind the Ox Alpha model that wowed Silicon Valley Business Insider · Thibault Spirlet
- AI's $30 trillion sales pitch Cautious Optimism · Alex Wilhelm
Analysis
Discussion
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@filicroval
Filipe
on x
keep your eyes open 👀 a lot of people kinda know what Ox Alpha is but i still think it'll be a surprise for most of you
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@opencode
@opencode
on x
42T tokens of Ox Alpha in 6 days Most used model after DeepSeek Flash's 56 day run Reveal in a few hours
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@hesamation
@hesamation
on x
OX ALPHA IS NOW #1 ON OPENROUTER BY TOKEN USAGE, almost 2x the #2 model. Make a model cheap enough (free, in this case), and people will use it at massive scale without knowing who made it or what the official benchmarks are. As long as it's reasonably smart.
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@davidondrej1
David Ondrej
on x
Ox Alpha is not as good as people think...
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@connebs
Connor
on x
I have no hat to throw in the ring for “guess which country or lab Ox Alpha is from”, but it does surprise me that the knowledge cutoff seems to be early 2025??
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@bindureddy
Bindu Reddy
on x
OxAlpha is GLM 5.3 Flash It seems like Nvidia may have provided the compute to give away 100T tokens for free!! Genius marketing of open-source AI!
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@vectal_labs
@vectal_labs
on x
We ran Ox Alpha on GPQA Diamond. Two full runs, 198 questions. Ox Alpha hit 84.3 vs GLM-5.3 at 91.7 Note: GLM-5.3 results come from Artificial Analysis. Their result is an average of 5 runs, we only had 2 due to slow inference and constant timeouts. The runs landed at 87.4 and
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@hesamation
@hesamation
on x
OX ALPHA IS A NEW GLM. now confirmed by Bloomberg. also the weights will be released tonight. so basically anyone with “insider information” claiming it WASN'T a new GLM had absolutely no insider information.
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@thezachmueller
Zach Mueller
on x
Let's go have fun all
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@tugot17
Piotr Mazurek
on x
wondering if the 1M context is achieved through even more aggressive indexer reuse across layers
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@zephyr_z9
@zephyr_z9
on x
GLM dropping soon
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@kimmonismus
@kimmonismus
on x
So yeah, today is gonna be a big day for Chinese open source: - Ox Alpha will be officially released as an open weight model And - Qwen3.8-Flash-Next (~125B-A6B + 51B n-gram) Will be released. Good day for open source. Quo vadis, western AI? Do you want to respond to
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@mervenoyann
Merve
on x
let's go
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@tensorqt
@tensorqt
on x
tf was up with those deepmind vagueposters
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@mikepfrank
Michael P. Frank
on x
Yah this is what we expected
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@a_k_nain
Aakash Kumar Nain
on x
Okay, this is going to be a big deal then. Wow!
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@kimmonismus
@kimmonismus
on x
Its official now: Ox Alpha is GLM(-5.3 Flash) by zAI. Offical release tonight via zAI Via Bloomberg “The company on Wednesday confirmed speculation that the Ox Alpha model is a new iteration of its GLM series and said it will release the weights for it tonight, in response to
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@th.alassa.pink
@th.alassa.pink
on bluesky
oh my god this makes googlers' vagueposting about it even more embarrassing than it already was. fwiw i never bought it; when you ask about Taiwan it gives you the “inalienable part of China” speech www.bloomberg.com/news/article...
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r/singularity
r
on reddit
Ox Alpha is GLM 5.3 Flash by zAI
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r/LocalLLaMA
r
on reddit
Confirmed: Z.AI Made Ox Alpha Stealth Model That Rivals DeepSeek
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@meer_aiit
Meer
on x
All speculations are now over regarding Ox Alpha !! Chinese company ‘Z. ai’ made Ox Alpha stealth > OxAlpha is probably GLM-5.3-Flash
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@tphuang
@tphuang
on x
A reveal that surprised absolutely nobody, but has given Zai a lot of good will & press. Free trial to encourage greater adoption is standard marketing practice. I would not overstate “the cost
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@ruima
Rui Ma
on x
People really need to start realizing just how strong @Zai_org is, the founders are Tsinghua CS profs who've been working on AI models for 20+ years To ensure you can get into Tsinghua CS, you usually need to score top 15-30ish in your whole province on the gaokao (top 0.003%)
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@xenoimpulse
@xenoimpulse
on x
So the Google guys engaging in vague posting surrounding this were just full of hot wind for no real reason?
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@ohlennart
Lennart Heim
on x
They were not serving 100T tokens per day. According to OpenRouter they served a total of 23T tokens (and peaked at 10T for a single day). You can serve that from ≈1k Blackwells or 3-4k Huawei Ascend 950DTs.