Introducing Claude Opus 5.5
If your team uses Claude for coding, writing or day-to-day analysis, Opus 5.5 gives similar quality to the top-tier Fable 5.1 model at 40% lower cost and noticeably faster responses — worth switching to if you are already on Opus 5. It is live now across AWS, Google Cloud, Azure and Anthropic's own platform, so there is no extra setup if you already access Claude through one of those.
What changed
Source summary
Anthropic released Claude Opus 5.5, the first model in a new Claude 5.5 line, matching Claude Fable 5.1 on most tasks while generating output 30% faster than Opus 5. It cuts pricing 40% versus Opus 5 (to $4/$20 per million input/output tokens, with cache reads down to $0.20/million) and includes improvements in coding, knowledge work, communication, and resistance to prompt injection attacks. It is available now on the Claude Platform, AWS, Google Cloud, and Microsoft Azure; Claude Sonnet 5.5 and Haiku 5.5 are coming in the following weeks. Anthropic notes that at this capability level, benchmark margins are becoming a less reliable guide to real-world differences, and that reliably catching every failure before deployment remains unsolved.
Why it matters to your work
Practical interpretation
If your team uses Claude for coding, writing or day-to-day analysis, Opus 5.5 gives similar quality to the top-tier Fable 5.1 model at 40% lower cost and noticeably faster responses — worth switching to if you are already on Opus 5. It is live now across AWS, Google Cloud, Azure and Anthropic's own platform, so there is no extra setup if you already access Claude through one of those.
Source & availability
This is a summary of a published provider announcement, with practical context from SCALA’s feed.
Plan, region, workspace and rollout conditions may affect access in Australia. Check the original source for current availability.
www.anthropic.com