Meta and Microsoft Reportedly Scale Back Anthropic Reliance as In-House AI Tools Move Center Stage

Meta and Microsoft are reportedly reducing their reliance on Anthropic, shifting more weight toward their own internal AI tools, according to a report carried by TradingView. The wording is a reported claim, and it points to a change in sourcing and usage structure rather than the debut of a specific product.

The core of the story is substitution: internal capabilities replacing an external model provider. The report centers on internal AI tools moving to center stage, suggesting both companies increasingly prefer in-house systems for everyday workloads.

For Anthropic, falling usage from large customers matters because enterprise accounts anchor a significant share of revenue. As one of the notable suppliers in the enterprise and developer market, the company is especially exposed when major buyers reconsider their contracts.

The report points to a directional shift; the precise scale and pace of the change will become clearer as more detail emerges. That distinction matters, because it means the safe reading is the trend itself rather than any exaggerated figure attached to it.

If leading buyers move workloads back in-house, the paid-model-provider model faces pressure, and build-over-buy could become the main competitive axis. For suppliers, the contest is no longer only about model quality but also about lock-in and how sticky their services are inside customer workflows.

Two things to watch next: whether Meta and Microsoft disclose more specifics, and how Anthropic responds to hold its enterprise customer base together.