Ox Alpha
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Filter storiesZ.ai identified the formerly anonymous Ox Alpha as GLM-5.3-Flash and released it under an MIT license. The native multimodal model has 320B total parameters, 18B active parameters, and a 1M-token context window.
OpenRouter says its free coding and sustained-agent model reached 8 trillion daily tokens within five days of launch. OpenCode separately reported processing 26 trillion Ox Alpha tokens over four days.
Researchers say malformed Ox Alpha requests exposed Zhipu-specific routes, error codes, and an internal class name. Independent vision comparisons also argue against speculation that the stealth model is Gemini.
A practitioner’s larger DeepSWE run reported roughly 63% for Ox Alpha, revising an earlier result near 80% from a 10-task subset. Testers report capable long-task work but note dead code and incomplete fixes.
OpenRouter is testing Ox Alpha, a free stealth model with a 1M-token context window. The model accepts text, image, and video inputs and is offered with zero data retention during the test.