AWS / update detail

Anthropic Claude Sonnet 5.5 and Claude Opus 5.5 are now available on Kiro in AWS GovCloud (US)

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AWS·Oct 9, 2026, 05:13 PMFeatureAI-assisted summary

Anthropic Claude Sonnet 5.5 and Claude Opus 5.5 are now available on Kiro in AWS GovCloud (US)

Summary

Added Anthropic Claude Opus 5.5 and Claude Sonnet 5.5 models to the Kiro IDE and CLI for AWS GovCloud (US) regions.
Opus 5.5 delivers ~40% fewer tool calls, half the token usage of Opus 5, with a 1M context window and 2.0× credit multiplier; Sonnet 5.5 is >30% faster, also with a 1M context window and 1.3× credit multiplier.
Requires updating Kiro to the latest version and restarting; documentation and monitoring guides are linked for further details.

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Official source Last checked Oct 19, 2026, 10:01 AM

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AWS / update detail

Anthropic Claude Sonnet 5.5 and Claude Opus 5.5 are now available on Kiro in AWS GovCloud (US)

Official AWS changelog summary with source attribution, release tags, and community reactions.

Track this AWS release note alongside related changelog updates, risky changes, and weekly digest signals from the developer community.

AWS·Oct 9, 2026, 05:13 PMFeatureAI-assisted summary

Anthropic Claude Sonnet 5.5 and Claude Opus 5.5 are now available on Kiro in AWS GovCloud (US)

Summary

Added Anthropic Claude Opus 5.5 and Claude Sonnet 5.5 models to the Kiro IDE and CLI for AWS GovCloud (US) regions.
Opus 5.5 delivers ~40% fewer tool calls, half the token usage of Opus 5, with a 1M context window and 2.0× credit multiplier; Sonnet 5.5 is >30% faster, also with a 1M context window and 1.3× credit multiplier.
Requires updating Kiro to the latest version and restarting; documentation and monitoring guides are linked for further details.

featuredocssource healthy

Official source Last checked Oct 19, 2026, 10:01 AM

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Every summary should remain traceable to the original changelog or release source.

AI-assisted summarysource healthyLast checked Oct 19, 2026, 10:01 AM

Official changelog

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