Amazon Bedrock adds Z.ai's 753B GLM 5.3

Amazon Bedrock now offers Z.ai’s 753-billion-parameter GLM 5.3 to eligible enterprise customers through managed APIs, with OpenAI-compatible endpoints and prompt caching, AWS announced. Z.ai reports a 50% gain over GLM 5.2 on its own coding benchmark and an 84.5 CyberGym score; neither result is an independent workload test. For teams trying open weights without operating inference infrastructure, this adds another managed route, but measure end-to-end cost and useful throughput against an incumbent, as the AIPerf goodput analysis explains.