Vercel adds Claude Sonnet 4.5 to AI Gateway and AI SDK
Cognition rebuilt Devin for Claude Sonnet 4.5, resulting in a 2x faster and 12% better performance on Junior Developer Evals. The new version is available in Agent Preview, while the old version remains available. The post details observations about the model's awareness of its context window, note-taking behavior, and parallel tool execution.
Amp has switched its primary model to Claude Sonnet 4.5, the latest release from Anthropic. The company reports improvements in coding tasks such as reduced sycophancy, higher success rates for file edits, and improved reasoning during debugging. The switch is automatic for users who update to the latest release of Amp's VS Code extension or CLI.
