Introducing GLM 5.3 on Amazon Bedrock

What happened

GLM 5.3 from Z.ai is now available on Amazon Bedrock: a 753B-parameter mixture-of-experts model built for coding and long-horizon agentic (AI that carries out multi-step tasks rather than answering one question) tasks. GLM 5.3 from Z.ai (Zhipu AI) is now available on Amazon Bedrock .

Learn how to invoke it with the OpenAI-compatible APIs, cut cost and latency (the delay between asking for something and getting it) with prompt caching, and run an authorized security test with the open-source Strix agent. Coding and agentic workloads are asking more of AI models than ever: refactor a repository spanning hundreds of files, sustain a multi-hour agentic workflow without losing context, and reason through complex systems problems with tool use at every step.

Meeting those demands with open-weight (a model whose trained parameters anyone may download) (published so anyone may download the trained model) models has historically meant provisioning and operating your own inference infrastructure. GLM 5.3, as published on Hugging Face Hub , is a 753B-parameter mixture-of-experts model optimized for coding and long-horizon agentic tasks.