Claude Sonnet 4.5 Supercharges GitHub Copilot: What Developers Need to Know Developers seeking smarter, faster coding experiences have reason to celebrate. Anthropic’s Claude Sonnet 4.5, the company’s most advanced AI model has arrived in public preview for GitHub Copilot. Th... AI coding Anthropic Claude Sonnet 4.5 Copilot CLI developer tools GitHub Copilot model selection public preview