Amazon announced that GLM 5.3, a 753B-parameter mixture-of-experts model from Z.ai (Zhipu AI), is now available on Amazon Bedrock.

The model is optimized for coding and long-horizon agentic tasks, and Z.ai reports it shows notable cyber security capabilities.

On Bedrock, it is accessible through fully managed APIs with cross-Region inference, prompt caching, and service tiers for eligible enterprise customers.