GLM-5.3-Flash Will Likely Handle 45% of Your AI Workloads
The model topped OpenRouter’s usage charts and more than doubled DeepSeek’s use before Z.ai said it would release the weights.
- On Wednesday, Z.ai confirmed that Ox Alpha is the newest iteration of its GLM series, announcing plans to release the model's weights after its anonymous debut on OpenRouter topped usage charts.
- Stealth releases are becoming a habit for Chinese firms like Alibaba and Xiaomi; Z.ai's code name, Niu Lai, comes from a film released in China recently.
- Research firm CTGT published a behavioral fingerprint on Monday, finding Ox Alpha carries a system prompt to hide its provenance and answers Western topics like an American model.
- Stripe's Patrick Collison called the release "very impressive," while testing firm Irregular's Dan Lahav said open weight models "have a very important part to play" in AI security.
- Z.ai is offering the model free for one week as it prepares to file its first detailed earnings report covering six months since January, using the launch to observe performance in the wild.
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26 Articles
Zhipu identifies Ox Alpha as GLM-5.3-Flash and releases model weights · TechNode
Zhipu has released GLM-5.3-Flash and its model weights, confirming that the model previously tested anonymously as Ox Alpha belongs to its GLM series. The model has 320 billion total parameters and 18 billion active parameters. GLM-5.3-Flash is the first natively multimodal model in the GLM-5 series, supporting text, images, videos, visual documents and interleaved multimodal inputs. The model was evaluated anonymously on OpenRouter and OpenCode…
Ox Alpha, a model released by the Chinese startup Zhifu AI on a U.S. AI platform without disclosing its source, has garnered attention for its outstanding performance. This serves as proof of China's AI technological prowess and its ability to utilize domestic semiconductors, suggesting that the technological catch-up and price competitiveness of Chinese models are rapidly emerging as a threat to U.S. Big Tech in the global AI market.
The initially anonymously published AI model Ox Alpha has found many Chinese users within a few days. Now the developer reveals how he wants to further develop the model.
GLM-5.3-Flash will likely handle 45% of your AI workloads
A week ago, a mystery model called Ox Alpha showed up on OpenRouter — one more entrant among more than 400 models, with roughly 10 new ones launching every week. What made it stand out wasn't just the free price tag; it was quietly good. Hobbyists and indie developers noticed fast, pushing several trillion tokens through it daily, with community estimates for the week ranging from single digits to over 20 trillion.AI enthusiasts spent the next s…
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