Amazon Bedrock Launches OpenAI GPT-5.5, GPT-5.4, and Codex for Advanced AI Development
Amazon Web Services (AWS) has expanded its AI model portfolio on Amazon Bedrock, introducing OpenAI’s GPT-5.5, GPT-5.4, and Codex to provide developers with enhanced tools for complex software development tasks. This integration marks a significant step in AWS’s efforts to offer cutting-edge AI solutions for enterprise and individual developers.
Key Features of the New Models
The GPT-5.5 and GPT-5.4 models are positioned as advanced AI tools for coding, reasoning, and agentic workflows, according to the announcement. Developers can leverage GPT-5.5 for high-complexity workloads and GPT-5.4 for cost-effective performance. Codex, OpenAI’s coding agent, enables AI-powered software development, supporting tasks like code writing, refactoring, and debugging across large codebases.
Integration with Amazon Bedrock
These models are now available on Amazon Bedrock, AWS’s machine learning service for accessing and using large models. The integration allows developers to call the models through the OpenAI Responses API, which is hosted on Bedrock’s next-generation inference engine. This setup ensures high performance, reliability, and security for AI-driven applications.
Technical Implementation
Developers can access the models using the OpenAI SDK for Python, with sample code provided for calling GPT-5.5. The models can be accessed directly via the command line using curl. For Codex, users can utilize the Codex CLI, desktop app, or IDE integrations with Visual Studio Code, JetBrains, and Xcode.
Data Residency and Pricing
Customers with data residency requirements can ensure all processing occurs within their selected Bedrock region. Pricing is based on a pay-per-token model, eliminating the need for seat licenses or per-developer commitments.
Availability and Regions
The GPT-5.5 model is available in the US East (Ohio) region, while GPT-5.4 is accessible in US East (Ohio) and US West (Oregon) regions. AWS plans to expand availability to additional regions in the future.
Developer Resources
AWS provides detailed documentation and examples for configuring Codex to work with OpenAI models on Bedrock. Developers can refer to the OpenAI on Amazon Bedrock page for setup guides and best practices.
Conclusion
The integration of OpenAI’s GPT-5.5, GPT-5.4, and Codex into Amazon Bedrock underscores AWS’s commitment to advancing AI development tools. By offering these models, AWS aims to empower developers to build scalable, high-performance applications while maintaining flexibility and cost efficiency.