GLM 5.3 by Z.ai is now generally available on Amazon Bedrock

Amazon Bedrock now supports GLM 5.3 from Z.ai, giving you a powerful new option for agentic coding and long-horizon software engineering work. Customers using GLM 5.3 on Amazon Bedrock have access to the latest open weight model with the AWS security and compliance posture. GLM 5.3 is Z.ai’s flagship model, a mixture-of-experts architecture with 753B total parameters and roughly 40B active per token, built on the same base model as GLM 5.2 with all improvements driven by scaled post-training.