LightSeek Foundation(@lightseekorg):🎉 Congrats to @Zai_org on GLM-5.3-Flash — the first natively multimodal model in the GLM-5 series, and their first model combining sparse and linear attention. GLM-5.3-Flash introduces a new combination of linear attention for local dependencies and sparse attention for global context, with IndexPool keeping the indexing overhead low even at 1M-token context. This new architecture also brings a new set of inference challenges. TokenSpeed already has day-0 support for GLM-5.3-Flash, with the stack validated on both @NVIDIA and @AMD GPUs. 👇

2026.08.26 19:15

🎉 Congrats to @Zai_org on GLM-5.3-Flash — the first natively multimodal model in the GLM-5 series, and their first model combining sparse and linear attention. GLM-5.3-Flash introduces a new combination of linear attention for local dependencies and sparse attention for global context, with IndexPool keeping the indexing overhead low even at 1M-token context. This new architecture also brings a new set of inference challenges. TokenSpeed already has day-0 support for GLM-5.3-Flash, with the stack validated on both @NVIDIA and @AMD GPUs. 👇

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