GPT-5.6 Sol, Terra, and Luna now support a 1 million-token context window, allowing full codebases and long documents to be processed in a single request. Requests up to 272 K tokens bill at the short-context rate, while larger requests use double that rate. Agents can now create durable artifacts such as code, diagrams, or images that appear in a preview panel and can be revisited later. Native ARM64 builds for Windows and Linux are included, enabling faster performance on modern hardware. The IDE now runs on Code OSS 1.131, improving stability and compatibility across platforms.