Anthropic Claude 5.5 Models Added to Kiro in GovCloud
🆕 Two new Anthropic models, Claude Opus 5.5 and Claude Sonnet 5.5, are now available in the Kiro IDE and CLI for AWS GovCloud (US) Regions. Opus 5.5 offers higher capability for long-running agentic coding with ~40% fewer tool calls and roughly half the tokens versus Opus 5, available with a 1M context window and 2.0x credit multiplier. Sonnet 5.5 is faster—>30% throughput improvement—with improved clarity and a 1.3x credit multiplier. Update your IDE/CLI to access the new models and consult GovCloud documentation or your AWS account team for details.
