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AWS has made Z.ai's GLM 5.3 available on Amazon Bedrock, a 753-billion-parameter mixture-of-experts model built for coding and long-horizon agentic tasks, with OpenAI-compatible APIs and prompt caching to cut cost and latency.

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GLM 5.3 from Z.ai Lands on Amazon Bedrock: A 753B-Parameter Model for Coding and Agents

What's new?

FAQ

What is GLM 5.3?

It is a large mixture-of-experts language model developed by Z.ai with 753 billion parameters, designed primarily for coding and long-horizon agentic tasks, now available on Amazon Bedrock.

How does availability on Amazon Bedrock help MENA engineering teams?

Teams can invoke it through OpenAI-compatible APIs without building dedicated model infrastructure, and use prompt caching to reduce cost and latency for repeated coding and agent workloads.

What are long-horizon agentic tasks?

These are tasks where the model executes a sequence of steps over an extended period, such as editing a codebase or calling multiple tools, rather than answering a single question.

Can it be used for security testing?

Yes, the source notes that an authorized security test can be run using the open-source Strix agent.

Source: AWS Machine Learning

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