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Z.ai releases GLM-5.3 and GLM-5.3-Flash models

By PulseAugur Editorial · [1 sources] ·

Z.ai has released two new models, GLM-5.3 and GLM-5.3-Flash, with parameter counts of 753.9B and 320.8B respectively. The flagship GLM-5.3 model is compatible with stock llama.cpp, while the Flash version requires a newer build due to architectural differences. The Flash model is natively multimodal and released under an MIT license, unlike the flagship which has a more restrictive Z.ai license. AI

IMPACT New model releases from Z.ai offer larger parameter counts and multimodal capabilities, potentially impacting the performance and application landscape for large language models.

RANK_REASON New model release from a frontier lab (Z.ai). [lever_c_demoted from frontier_release: ic=1 ai=1.0]

Read on dev.to — LLM tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Z.ai releases GLM-5.3 and GLM-5.3-Flash models

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59 / 100
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Significant
New model release from a frontier lab (Z.ai). [lever_c_demoted from frontier_release: ic=1 ai=1.0]
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model release
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COVERAGE [1]

  1. dev.to — LLM tag TIER_1 English(EN) · David ·

    Run GLM-5.3 Locally: Real Quant Sizes, the llama.cpp Surprise, and the reasoning_effort Trap

    <p>Z.ai published the GLM-5.3-Flash weights on <strong>27 August 2026 at 10:33 UTC</strong> and the GLM-5.3 flagship on <strong>28 August 2026 at 15:22 UTC</strong>. The models were on Z.ai's own API first, though I could not find a primary source that dates that launch, so I am …

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