Claude Sonnet 5.5 is now available on Amazon Bedrock and Claude Platform on AWS
Anthropic’s Claude Sonnet 5.5 is spreading through major deployment channels, with AWS announcing availability on Amazon Bedrock and Claude Platform on AWS so teams can route production traffic while keeping data in their AWS environment. Industry reporting describes Sonnet 5.5 as the second model in the Claude 5.5 family after Opus 5.5, tuned for focused coding and knowledge work with more than thirty percent faster generation, up to thirty percent lower cost per task, and near-Opus performance on knowledge-work benchmarks in third-party coverage. Vercel lists anthropic/claude-sonnet-5.5 on AI Gateway, and Windsurf highlights gains on FrontierCode inside Devin. Treat large quoted benchmark swings, including Terminal-Bench moving from 10.3 to 70.6 percent in one article, as attributed vendor and press figures until you reproduce them on your own tasks and data boundaries.
Claude Sonnet 5.5 is now available on Amazon Bedrock and Claude Platform on AWS
AWS ML announced Claude Sonnet 5.5 on Amazon Bedrock and Claude Platform on AWS, positioning it for focused coding and knowledge work with lower cost per task at faster speed for most workloads. Bedrock customers can route production traffic to Sonnet 5.5 while keeping data in their AWS environment.
Key takeaway
Sonnet 5.5 is now a default mid-tier option on Bedrock and several gateways, pairing AWS data residency with reported Sonnet-class speed and cost gains.
What happened
AWS ML announced that Claude Sonnet 5.5 is available on Amazon Bedrock and Claude Platform on AWS, describing it as suited for focused coding and knowledge work with lower cost per task and faster speed for most workloads while Bedrock customers keep data in their AWS environment.
Anthropic’s launch drew parallel availability notes from Vercel on AI Gateway as anthropic/claude-sonnet-5.5 and from Windsurf for Devin, while The Decoder and The New Stack reported Sonnet 5.5 as faster and cheaper than prior Sonnet tiers and close to Opus 5.5 on knowledge-work benchmarks, with Haiku 5.5 flagged as coming in the coming weeks.
Evidence
Sonnet 5.5 is available on Amazon Bedrock and Claude Platform on AWS.
AWS ML · attributed
Today, we’re excited to announce the availability of Claude Sonnet 5.5 on Amazon Bedrock and Claude Platform on AWS .
Bedrock customers can use Sonnet 5.5 while keeping data in their AWS environment.
AWS ML · attributed
Amazon Bedrock gives you Sonnet 5.5 capabilities while keeping your dat
Sonnet 5.5 is faster, cheaper per task, and nearly matches Opus 5.5 on knowledge-work benchmarks per The Decoder.
The Decoder · attributed
It generates output more than 30 percent faster, costs up to 30 percent less per task, and nearly matches Opus 5.5 on knowledge-work benchmarks.
Terminal-Bench coding score rose from 10.3 to 70.6 percent in The Decoder’s reporting.
The Decoder · attributed
On Terminal-Bench, a coding benchmark, the model jumps from 10.3 to 70.6 percent.
Vercel exposes Claude Sonnet 5.5 on AI Gateway as anthropic/claude-sonnet-5.5.
Vercel AI · attributed
Claude Sonnet 5.5 from Anthropic is now available on AI Gateway as anthropic/claude-sonnet-5.5 .
On FrontierCode 1.1, Sonnet 5.5 scored 64.4% in Windsurf’s Devin blog post.
Windsurf Blog · attributed
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.
The New Stack reports Haiku 5.5 will launch in the coming weeks.
The New Stack AI · attributed
A new version of Claude Haiku , the smallest and most affordable model in the family, is on the roadmap and will launch “in the coming weeks.”
Why it matters
Teams standardizing on AWS or gateway abstractions can adopt a newer Sonnet tier without leaving existing control planes, while pricing and latency claims pressure prior Sonnet defaults in production routing.
Limits and uncertainties
Several excerpts in the packet are truncated mid-sentence, so full product terms and capability lists are not visible here.
Speed, cost, and benchmark comparisons come from AWS, Anthropic-facing announcements, and press summaries rather than independent audits in this packet.
Haiku 5.5 is described as upcoming in the coming weeks and is not yet available in the cited coverage.
Practical implications
Bedrock operators can evaluate routing coding and knowledge-work loads to Sonnet 5.5 while keeping inference inside their AWS environment per AWS ML’s announcement.
Teams on Vercel AI Gateway can point configs at anthropic/claude-sonnet-5.5 without changing gateway plumbing according to Vercel’s changelog.
Agent and IDE vendors such as Windsurf can swap Devin model tiers to Sonnet 5.5 where FrontierCode-style coding evals drive model choice.
What to watch
AWS Bedrock and Claude Platform on AWS documentation for model IDs, quotas, and regional rollout details beyond the launch blog.
Anthropic or partner confirmation of Claude Haiku 5.5 general availability after the stated coming weeks window.
Your own regression suites on coding and document tasks to validate reported thirty percent speed and cost deltas against prior Sonnet 5.
