Greater AI choice in GitLab Duo: Claude Sonnet 4.5 arrives

This post announces the integration of Claude Sonnet 4.5 into the GitLab Duo model selector, providing users with an additional advanced AI model for coding and agentic workflows. It highlights the model's performance on SWE-bench Verified and its strengths in cybersecurity, finance, and research. The post emphasizes how the GitLab Duo Agent Platform orchestrates this model, connecting it to internal systems and integrating it throughout the software lifecycle for faster development and more accurate outcomes within the existing GitLab workflow.