Anthropic's Claude Sonnet 4.5 is Live in Cline

Claude Sonnet 4.5 by Anthropic, now available in Cline, offers a substantial upgrade with a 200k context window at the same pricing as its predecessor, focusing on reliability, terseness, and stateful project memory. The model autonomously generates detailed documentation, such as CHANGELOG.md and SUMMARY.md, to maintain continuity across multi-session builds and uses a test-first approach to coding. It efficiently manages long-running refactors and multi-file tasks by employing structured diffs and live context anchors, allowing it to resume sessions seamlessly. The Auto Compact feature in Cline complements Sonnet 4.5 by compressing conversation history, ensuring coherent and concise context management. Users are encouraged to use direct commands to maximize the model's capabilities, while its self-written state allows for minimal repetition of requirements, making it ideal for handling complex, multi-session projects.