AWS's only development this period was Anthropic's September 29 release of Claude Sonnet 5.5, which became available on the AWS platform. Anthropic claims the new model is 30% faster than Sonnet 5 with up to 30% lower task costs, at unchanged pricing. This follows last period's appearance as a potential DensityAI chip buyer, and is a routine platform-availability update rather than a major AWS-specific event.
- Anthropic released Claude Sonnet 5.5 on September 29, claiming 30% faster speed and up to 30% lower task costs versus Sonnet 5, with pricing unchanged at $2/$10 per million input/output tokens.
- Claude Sonnet 5.5 launched simultaneously on AWS, Google Cloud, and Azure, with AWS serving as one of the hosting platforms in this release.
- The model scored 70.6% on Terminal-Bench 4.0, up sharply from 10.3%, and 56 on the Artificial Analysis Intelligence Index.



