Microsoft $MSFT just took a 3% hit in 30 minutes after Anthropic introduced Claude Sheets, Claude Whiteboards and Claude Data.

For over 40 years, Excel has been the go-to tool for spreadsheets and data analysis.

Anthropic is stepping into that territory with AI-powered tools that could change how people work with data.

The competition in AI is getting serious, and even Microsoft's long-standing dominance is facing a new challenge.

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