Claude Sonnet 5.5 now generally available in GitHub Copilot
GitHub made Claude Sonnet 5.5 generally available across Copilot Pro through Enterprise—VS Code, JetBrains, Copilot CLI, coding agent, Mobile, and more—billed at Anthropic list rates. Early tests matched Sonnet 5 on coding with fewer steps, tokens, and tool calls; rollout is gradual and admins gate it via model policy.
