Mon Nov 24 19:20:00 UTC 2025: Summary:

Anthropic has released Claude Opus 4.5, a new AI model that surpasses its predecessors in intelligence, efficiency, and coding capabilities. It excels in real-world software engineering tests, demonstrates enhanced performance in everyday tasks like research and spreadsheet work, and showcases improved vision, reasoning, and mathematics skills. Opus 4.5 boasts robust alignment and security, making it resistant to prompt injection attacks. Its improved token efficiency, along with a new effort parameter on the Claude API, offers developers control over cost and capability. Anthropic is also updating its Claude Developer Platform, Claude Code, and consumer apps with new features, including enhanced context management and multi-agent system capabilities.

News Article:

Anthropic Unveils Claude Opus 4.5: The Next Generation AI Model

San Francisco, CA – Anthropic today announced the release of Claude Opus 4.5, its most advanced AI model to date. The company claims Opus 4.5 sets a new standard for AI capabilities, outperforming existing models in areas like coding, software engineering, and complex problem-solving.

According to Anthropic, early testers and customers have lauded Opus 4.5 for its ability to “just get it,” handling ambiguity and reasoning about tradeoffs with minimal guidance. The model demonstrated exceptional performance on a notoriously difficult software engineering take-home exam, even surpassing the scores of human candidates.

“Opus 4.5 is a step forward in what AI systems can do, and a preview of larger changes to how work gets done,” said a spokesperson for Anthropic. “We’ve made substantial progress in robustness against prompt injection attacks, making Opus 4.5 harder to trick than any other frontier model in the industry.”

The model is available through Anthropic’s apps, API, and major cloud platforms, with pricing at $5/$25 per million tokens. The release is accompanied by updates to the Claude Developer Platform, Claude Code, and consumer apps, offering new tools for longer-running agents and enhanced functionality in Excel, Chrome, and desktop environments. Furthermore, longer conversations no longer hit a wall.

Anthropic also highlighted the model’s improved token efficiency and a new “effort parameter” on the Claude API, giving developers greater control over resource consumption and performance. The company states that Microsoft, NVIDIA and Anthropic announced new strategic partnerships. Anthropic is scaling its rapidly-growing Claude AI model on Microsoft Azure, powered by NVIDIA, which will broaden access to Claude and provide Azure enterprise customers with expanded model choice and new capabilities. Anthropic has committed to purchase $30 billion of Azure compute capacity and to contract additional compute capacity up to one gigawatt.

The launch of Claude Opus 4.5 signals a significant advancement in AI technology, with the potential to transform software engineering and various other industries.

Read More