SGLang released day-0 production serving for open-weights GLM-5.3, demonstrating 537.6 tok/s/user under NVFP4 on 8x B300 and multi-platform optimization for NVIDIA Blackwell and AMD MI355X.

Key Takeaways

  • ✓Day-0 production deployment support for 320B-A18B hybrid-attention architectures immediately upon weights release;
  • ✓Optimized NVFP4/FP8 kernels sustain over 500 tokens/second per user under authentic agentic multi-turn traces;
  • ✓Unified serving stack across NVIDIA Blackwell/Hopper and AMD Instinct accelerators eliminates vendor lock-in.
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GLM-5.3-Flash · in: $0.15 / out: $0.5
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Up NextCommand Code ships GLM-5.3 FlashX: ~200 TPS, 1M-context multimodal
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