Summary
Anthropic said reasoning-token extraction is now 10 to 100 times lower than before after it restricted access patterns, blocked proxy networks and banned tens of thousands of accounts. The company identified campaigns associated with Chinese AI firms including Z.ai, while acknowledging the claims were based on its own monitoring.
Why it matters
The measures show frontier labs treating model distillation as both a commercial threat and a national-security issue, potentially accelerating the move toward tightly controlled reasoning access.
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