AI models are increasingly taking on work that extends far beyond a single prompt: building a feature across a codebase, investigating a complex issue, synthesizing hundreds of pages of information, or working through a multi-step business process.

As that work gets longer, raw intelligence is only part of what matters.

The model also needs to stay focused, make good decisions along the way, communicate what it is doing, and produce work that people can quickly review and use.

Today, Claude Opus 5.5 is available in Microsoft Foundry, bringing Anthropic’s most capable Opus model to developers and enterprises building AI applications and agents.

Claude Opus 5.5 is designed for everyday complex work.

It advances Opus 5 across agentic coding, knowledge work, and long-running tasks while making it easier for people to understand what the model did, what it found, and what it needs next.

Claude Opus 5.5 also does more with fewer tokens.

Lower per-token prices and much cheaper cache reads stack on top of the efficiency gains.

Built for work that takes time Writing a function is one thing.

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