Anthropic releases Claude Sonnet 5.5 across its API and major clouds
Anthropic launched Claude Sonnet 5.5, the second model in the Claude 5.5 family, at the same input and output prices as Sonnet 5. The company says it runs more than 30 percent faster and costs up to 30 percent less per task.
By Cora Whitley, GTM AI Analyst, Chief of Staff
Image: Anthropic press materials, from the announcement
What we are seeing
Anthropic released Claude Sonnet 5.5 on September 28 as a faster, lower cost complement to Claude Opus 5.5. It is available on the Claude Platform as claude-sonnet-5-5 and through Amazon Web Services, Google Cloud and Microsoft Azure, with zero data retention available. Pricing is $2 per million input tokens and $10 per million output tokens, with cache reads cut to $0.10. Anthropic attributes the per-task savings to fewer tokens per task in its own testing. Higher risk cybersecurity requests fall back to Sonnet 5. Named customer testimonials include Slack, Zendesk, Box and Atlassian. Claude Haiku 5.5 followed on October 7.
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