ClosedOngoing story

Sonnet 5.5

Since Sunday, September 27 · updated 8 days ago · 11 pieces from 9 sources, in the order they came out.

5 availability · 4 news · 1 api · 1 release

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Its model sheet: who made it, where it runs, what it replaces →

Latest

What's New with AWSFriday, October 9Anthropic Claude Sonnet 5.5 and Claude Opus 5.5 are now available on Kiro in AWS GovCloud (US)
SnowflakeMonday, September 28Announcing Claude Sonnet 5.5 on Snowflake Cortex AI

From the start

Sunday, September 27

AvailabilityVercel12:00 AM UTCNews
Claude Sonnet 5.5 now available on AI Gateway
Claude Sonnet 5.5 from Anthropic is now available on AI Gateway as anthropic/claude-sonnet-5.5. Sonnet 5.5 improves on Claude Sonnet 5 for well-scoped everyday work, from building features and fixing bugs to creating doc…
NewsWindsurf12:00 AM UTCNews
Claude Sonnet 5.5 is now available in Devin
On FrontierCode 1.1, Sonnet 5.5 is a significant improvement from Sonnet 5 at 64.4%, surpassing even Fable 5.1 at extra high reasoning effort.
AvailabilityNetlify12:00 AM UTCNews
Claude Sonnet 5.5 now available in AI Gateway and Agent Runners
Anthropic’s Claude Sonnet 5.5 model is now available through Netlify’s AI Gateway and Agent Runners with zero configuration required. Use the Anthropic SDK directly in your Netlify Functions without managing API keys or…

Monday, September 28

APIClaude API Release Notes12:00 PM UTCNews
Claude Sonnet 5.5
We've launched Claude Sonnet 5.5 (claude-sonnet-5-5). It's available on the Claude API, Claude in Amazon Bedrock, Claude Platform on AWS, Claude on Google Cloud, and Claude in Microsoft Foundry. For its context window, o…
AvailabilityWhat's New with AWS3:00 PM UTCNews
Claude Sonnet 5.5 now available on AWS GovCloud (US)
AWS GovCloud (US) now offers Claude Sonnet 5.5, a smarter and more efficient Sonnet that delivers a clear leap forward on coding and knowledge work with at a lower cost per task for most work ag faster speed. Claude Sonn…
AvailabilityWhat's New with AWS3:00 PM UTCNews
Claude Sonnet 5.5 now available on AWS
AWS now offers Claude Sonnet 5.5, a smarter and more efficient Sonnet that delivers a clear leap forward on coding and knowledge work with at a lower cost per task for most work at faster speed. Claude Sonnet 5.5 is a sm…
NewsGitHub Changelog6:03 PM UTCNews
Claude Sonnet 5.5 in GitHub Copilot
Claude Sonnet 5.5, Anthropic’s newest Sonnet model, is now generally available in GitHub Copilot. It is designed for well-scoped everyday work like building features and fixing bugs. In our early… The post Claude Sonnet…
ReleaseOpenRouter6:04 PM UTCNew Models
New model: Anthropic: Claude Sonnet 5.5
Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. It is especially strong at building features, fixing bugs, and producing...
NewsAWS Machine Learning6:57 PM UTCNews
Introducing Claude Sonnet 5.5 on AWS
Claude Sonnet 5.5 is now available on Amazon Bedrock and Claude Platform on AWS. It's a smarter, more efficient Sonnet model for focused coding and knowledge work, with a lower cost per task at faster speed. This post co…
NewsSnowflake7:21 PM UTCNews
Announcing Claude Sonnet 5.5 on Snowflake Cortex AI
Claude Sonnet 5.5 is coming to Cortex Inference in public preview, with Cortex AI Functions, Snowflake CoWork, Snowflake CoCo, and Cortex Agents coming soon.

Friday, October 9

AvailabilityWhat's New with AWS5:13 PM UTCNews
Anthropic Claude Sonnet 5.5 and Claude Opus 5.5 are now available on Kiro in AWS GovCloud (US)
Two new Anthropic models are now available in the Kiro IDE and CLI for the AWS GovCloud (US) Regions. Claude Opus 5.5 is Anthropic's most capable Opus model yet and a step up from Opus 5 on long-running agentic coding wo…

The story so far.