On Monday, Anthropic announced Opus 4.5, the latest version of its flagship model. It's the last of Anthropic's 4.5 series of models to be released, following the launch of Sonnet 4.5 in September and Haiku 4.5 in October. As expected, the new version of Opus has state-of-the-art performance on a range of benchmarks, including coding benchmarks (SWE-Bench and Terminal-bench), tool use (tau2-bench and MCP Atlas) and general problem solving (ARC-AGI 2, GPQA Diamond). Anthropic also emphasized the Opus's computer use and spreadsheet capabilities, and launched a number of parallel products to showcase how the model holds up in those settings. Together with Opus 4.5, Anthropic will make its Claude for Chrome and Claude for Excel products ' previously in pilot ' more broadly available. The Chrome extension will be available to all Max users, while the Excel-focused model will be available to Max, Team and Enterprise users. 'There are improvements we made on general long context quality in...
learn more
