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OpenAI GPT-5.4 and GPT-5.5 models now available in US East (N. Virginia) on Amazon Bedrock

Amazon Bedrock now offers OpenAI's GPT-5.4 and GPT-5.5 models in the US East (N. Virginia) Region, enabling advanced generative AI applications for coding, reasoning, and long-running tasks.

AWS announces the expanded availability of OpenAI's GPT-5.4 and GPT-5.5 models, now available in the US East (N. Virginia) Region on Amazon Bedrock. With these models, you can build generative AI applications across reasoning, coding, computer use, document workflows, and long-running agentic tasks. GPT-5.5 is OpenAI's most capable model, designed for advanced coding, research, analysis, software operation, document workflows, and long-running agentic tasks. It can understand open-ended goals, use tools, reason across longer workflows, navigate ambiguity, and carry complex tasks through to completion with less orchestration. GPT-5.4 brings frontier reasoning, coding, computer use, long-context workflows, and tool use to production applications that interpret context, interact with tools, operate software environments, and verify outputs across multiple steps. Both models support a 272K-token context window, accept text and image input, and are available through the Responses API with support for server-side and client-side tool calling, projects, and response streaming.

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