GLM 5.3 is a 753B-parameter model optimized for coding and long-horizon agentic tasks, offering improved performance in coding and security benchmarks compared to its predecessor, GLM 5. This model is available to eligible enterprise customers through fully managed APIs on Amazon Bedrock.
What happened
AWS has announced the availability of GLM 5.3, a large language model from Z.ai, on Amazon Bedrock. GLM 5.3 is a 753B-parameter mixture-of-experts model optimized for coding and long-horizon agentic tasks. It includes notable improvements in coding performance and cyber security capabilities. The model is available through fully managed APIs on Amazon Bedrock, offering features such as cross-Region inference, prompt caching, and service tiers. Access to GLM 5.3 on Bedrock is available to eligible enterprise customers.
FAQ
What is the model size of GLM 5.3?
GLM 5.3 is a 753B-parameter mixture-of-experts model.
What are the performance improvements of GLM 5.3?
GLM 5.3 shows a 50% improvement over GLM 5.2 on their own internal coding benchmark.
What are the security benchmark scores?
Z.ai measured a leading score of 84.5 on the CyberGym benchmark at release.
Source: Amazon Web Services