Amazon Bedrock has expanded OpenAI GPT-5.6 Sol, Terra, and Luna with support for 1 million token context windows. The update enables developers to process complete code repositories, large legal and regulatory documents, and extended multi-step agent histories without splitting inputs into smaller chunks.
The models also support prompt caching with explicit cache breakpoints, helping reduce costs for repeated long-context requests. GPT-5.6 Sol is available in AWS US East (N. Virginia) and US East (Ohio), while Terra and Luna are also available in US West (Oregon).
The capability is accessible through the Amazon Bedrock Console and the Responses API.
