OpenAI GPT-5.6 Sol, Terra, and Luna now support 1 million token context windows on Amazon Bedrock

GPT-5.6 Sol, Terra, and Luna now support 1 million token context windows on Amazon Bedrock, enabling you to process full codebases, lengthy documents, and multi-turn agent histories in a single request. Models reason over broader context and return more accurate, coherent responses without chunking or information loss. With a context window size of 1 million tokens, you can analyze entire repositories in a single pass for code review and migration, process long-form legal or regulatory documents end-to-end, and maintain full conversation history in multi-step agentic workflows. Prompt caching with explicit cache breakpoints applies to long context requests, so repeated context is billed at a caching discount. GPT-5.6 Sol is available in the following [AWS Regions](https://docs.aws.amazon.com/bedrock/latest/userguide/models-region-compatibility.html): US East (N. Virginia) and US East (Ohio). GPT-5.6 Terra and Luna are available in US East (N. Virginia), US East (Ohio), and US West (Oregon). Get started with Sol, Terra, and Luna using the [Amazon Bedrock Console](https://us-east-1.console.aws.amazon.com/bedrock-mantle/home?region=us-east-1#) or the Responses API on the bedrock-mantle endpoint. To learn more, see the [Amazon Bedrock documentation](https://docs.aws.amazon.com/bedrock/latest/userguide/model-cards-openai.html) and read the [launch blog post](https://aws.amazon.com/blogs/machine-learning/openai-gpt-5-6-sol-terra-and-luna-are-now-generally-available-on-amazon-bedrock/).