
The Frontier
Z.ai's GLM-5.3-Flash tops benchmarks at one-tenth the price
The mystery model that ruled the leaderboards all week finally showed its face today — and the reveal came with a price tag that's reshaping the frontier. Z.ai has confirmed that GLM-5.3-Flash — the model it released today — is the same engine that topped benchmarks anonymously as "Ox Alpha" this week. The first natively multimodal model in the GLM-5 series packs 320 billion total parameters with just 18 billion active, a sparse MoE design the company says lets it beat its predecessor GLM-5.2 a










