2026-10-05 # Bedrock Adds Z.ai's 753B-Parameter GLM 5.3 Model Amazon Web Services says Z.ai's GLM 5.3, a 753B-parameter mixture-of-experts model aimed at coding and long-horizon agentic tasks, is now live on Amazon Bedrock, according to aws.amazon.com. The announcement also details OpenAI-compatible invocation, prompt caching to cut cost and latency, and security testing via the open-source Strix agent. ## What else the source says - GLM 5.3 is a 753B-parameter mixture-of-experts model from Z.ai - GLM 5.3 is now available on Amazon Bedrock - GLM 5.3 is built for coding and long-horizon agentic tasks - It can be invoked with OpenAI-compatible APIs - Prompt caching can cut cost and latency Source. [aws.amazon.com](https://aws.amazon.com/blogs/machine-learning/introducing-glm-5-3-on-amazon-bedrock/) ## TRACE - First seen Oct 5, 2026, 4:31 PM PT - Published Oct 5, 2026, 4:53 PM PT, 22 min after first seen - Source aws.amazon.com (Company source) - Checks Checked automatically [SOTO home](https://signalsoftomorrow.com/)