OpenAI GPT-5.4 generally available on Amazon Bedrock in AWS GovCloud (US-West)

Amazon Bedrock now supports GPT‑5.4 from OpenAI in AWS GovCloud (US-West) — giving government and regulated industry customers access to OpenAI's most capable frontier model for professional work, backed by the enterprise-grade security and goverment compliance scope of AWS GovCloud (US). GPT‑5.4 supports native computer-use capabilities, and deep reasoning across coding, documents, and multi-step agentic tasks — all running on Bedrock's high-performance inference engine with isolated queues and durable state for fault-tolerant workloads. Your data stays in-partition and is never used to train models. For Regional availability of GPT-5.4 see the [AWS Regions page](https://docs.aws.amazon.com/bedrock/latest/userguide/models-region-compatibility.html). Read [the launch blog](https://aws.amazon.com/blogs/machine-learning/openai-models-and-codex-on-amazon-bedrock-are-now-generally-available) to learn more, for documentation and a step-by-step walkthrough, see the [Amazon Bedrock docs](https://docs.aws.amazon.com/bedrock/latest/userguide/model-cards-openai.html) and the[ getting started blog](https://aws.amazon.com/blogs/aws/get-started-with-openai-gpt-5-5-gpt-5-4-models-and-codex-on-amazon-bedrock).