GLM-5.3-Flash
CodeFreemium

GLM-5.3-Flash

Z.ai’s MIT-licensed multimodal MoE — 320B total / 18B active, 1M-token context, at $0.15 per million input tokens.

4.5
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About GLM-5.3-Flash

GLM-5.3-Flash (Z.ai, formerly Zhipu AI) is an MIT-licensed, natively multimodal Mixture-of-Experts model with 320B total parameters and 18B active per token, a 1M-token context window and image and video input. It previewed anonymously as the "Ox Alpha" stealth model before Z.ai claimed it on August 26, 2026. It scores 57.0 on the Artificial Analysis Intelligence Index — ahead of Claude Sonnet 5 (55.3), GPT-5.6 Terra (55.0) and GPT-5.6 Luna (51.2), and behind Claude Opus 5 (63.0) and GPT-5.6 Sol (58.9) — at $0.15/$0.50 per million input/output tokens. Weights are on Hugging Face at roughly 306 GiB in FP8.

Tags

codingopen-weightmoemit-licensechina1m-contextmultimodal

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