Z.ai released GLM-5.3-Flash, a native-multimodal 320B-A18B MoE with a 1M-token context, and confirmed it was Ox Alpha—the anonymous model that went viral on OpenRouter. Weights are MIT-licensed, the model ran entirely on Chinese AI chips, API input is /bin/sh.15 per million tokens, and it matches Claude Opus 4.8 on Z.ai’s real-world coding bench.
Key Takeaways
- ✓320B-A18B MoE, native multimodal, 1M context, MIT-licensed weights
- ✓Confirmed as the viral anonymous OpenRouter model Ox Alpha, run on Chinese chips
- ✓Matches Claude Opus 4.8 on coding benches at /bin/sh.15 / /bin/sh.50 per 1M tokens
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