Z.ai confirms Ox Alpha is a new iteration of its GLM series and says it will release the weights for it tonight; Ox Alpha topped OpenRouter's leaderboard (Luz Ding/Bloomberg)
Ox Alpha was Z.ai’s GLM-5.3-Flash, tested anonymously before the weights release.
Z.ai told Bloomberg it ran the model on OpenCode and OpenRouter under the Ox Alpha name, with traffic served on Chinese AI chips. The model had climbed to the top of OpenRouter usage charts while offered at zero cost. Z.ai’s post describes GLM-5.3-Flash as a 320B-parameter, 18B-active multimodal model with a 1M-token context window and an MIT license. Techmeme's note
Z.ai told Bloomberg it ran the model on OpenCode and OpenRouter under the Ox Alpha name, with traffic served on Chinese AI chips. The model had climbed to the top of OpenRouter usage charts while offered at zero cost. Z.ai’s post describes GLM-5.3-Flash as a 320B-parameter, 18B-active multimodal model with a 1M-token context window and an MIT license. Techmeme's note
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