MoneyThe story, in brief
Meta and Microsoft pull back from Claude as Anthropic transforms from partner into competitor
Microsoft cut Claude's monthly budget 90%. Meta halved its users. Anthropic's customer concentration just became a $5B+ problem.
The KeyNews take
Why it matters
Two of Anthropic's largest enterprise customers are sharply reducing Claude usage and redirecting budgets to their own AI tools, exposing a critical dependency risk for Anthropic as its biggest partners become competitors.
The key facts
5 to knowMicrosoft slashed monthly per-employee Claude budget from $100,000 to $10,000 in its cloud division (90% cut)
Meta halved Claude Code users from 60,000 to 30,000
Both companies are prioritizing internal AI tools over Claude
Anthropic's revenue concentration in a few major enterprise customers now a strategic vulnerability
Published Oct 5, 2026
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The Decoderthe-decoder.com
Publisher excerpt: Meta and Microsoft, two of Anthropic's biggest enterprise customers, are sharply cutting their use of Claude. Microsoft slashed the monthly per-employee budget in its cloud division from $100,000 to $10,000, while Meta halved its Claude Code users to 30,000. Both companies are pushing their own AI…