Corporate Wars: Microsoft Blocks Claude Fable 5 While TCS Buys It for 50,000 Engineers

A proxy war is escalating in the B2B artificial intelligence market. On June 10-11, 2026, it was revealed that Microsoft heavily restricted the use of the latest `Claude Fable 5` model (from Anthropic) by its employees. The official reason is non-compliance with data retention and privacy standards. The actual reason is a purge of competitors: just a week ago, Microsoft rolled out its own sovereign MAI-Thinking-1 model and began squeezing third-party solutions out of its ecosystem.

However, losing Microsoft’s internal corporate market was not fatal for Anthropic. Synchronously, the Indian IT giant Tata Consultancy Services (TCS) announced a massive partnership with the creators of Claude. The integrator plans to train 50,000 of its employees on this model to scale Enterprise AI. The market is fracturing: while American monopolists build "walled gardens," global outsourcers are diversifying their neural network portfolios to avoid dependence on the dictates of a single corporation.

Source: Reuters / TCS / The Verge