Get started with OpenAI GPT-5.5, GPT-5.4 models, and Codex on Amazon Bedrock

This article announces the general availability of OpenAI GPT-5.5, GPT-5.4 models, and Codex on Amazon Bedrock for AI-powered development and reasoning tasks.

• GPT-5.5 and GPT-5.4 models available for coding, reasoning, and complex professional workflows
• Codex is an AI coding agent used by 4 million developers weekly for code development
• Access models via OpenAI Responses API through bedrock-mantle endpoints
• Codex supports CLI, desktop app, and IDE integrations (VS Code, JetBrains, Xcode)
• Pay-per-token pricing with no seat licenses or per-developer commitments
• Data residency requirements met with processing in selected Bedrock Region
• GPT-5.5 available in US East (Ohio); GPT-5.4 in US East and US West regions
• Bedrock's inference engine designed for high performance, reliability, and security

AWS now provides frontier OpenAI models and Codex on Bedrock, enabling developers to build sophisticated AI applications with flexible pricing and regional data control.