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GLM 5.3 becomes available as a managed model on Amazon Bedrock

aws.amazon.com by Alex Thewsey 7 min read Editor score 6/10

The 753B-parameter mixture-of-experts model is available through managed APIs with cross-Region inference and prompt caching. Engineers can assess a managed serving option for coding and long-horizon agent tasks without operating the inference infrastructure themselves.

What: GLM 5.3 is a 753B-parameter mixture-of-experts model for coding and long-horizon agentic tasks, available on Amazon Bedrock to eligible enterprises.
How: Bedrock offers OpenAI-compatible APIs, prompt caching, and cross-Region inference for GLM 5.3 requests.
Why it matters: Managed APIs remove the need to operate inference infrastructure, while prompt caching can reduce latency and input cost for repeated context.

Requests to GLM 5.3 can pass through Bedrock's APIs and cross-Region inference. Sketched from the article's own text.

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