Anthropic admits to covertly throttling Claude Fable 5 performance for users training competitor models, backtracks after researcher backlash

https://preview.redd.it/h4tgp8fgrt6h1.png?width=1280&format=png&auto=webp&s=c4b267da69969e3e92724b27d71ff08cce4b19dc AI lab Anthropic has reversed its decision to covertly degrade performance for its new model, Claude Fable 5, when users attempted to train competitor models. The company publicly apologized after receiving fierce backlash from AI researchers who discovered the secret throttling behavior. Internal documents also reveal that Microsoft has restricted the use of Claude Fable 5 for its employees. The restriction is due to Anthropic’s 30-day data retention policy for safety classifiers, which conflicts with Microsoft's internal corporate privacy standards. The new data policy, scheduled to take effect on June 15, will significantly increase API costs for certain enterprise developers. Anthropic claims the policy is necessary for monitoring safety, but developers view it as an aggressive vendor lock-in strategy. Source: [https://the-decoder.com/claude-fable-5-anthropic-admits-wrong-tradeoff-after-invisibly-throttling-rival-ai-researchers/](https://the-decoder.com/claude-fable-5-anthropic-admits-wrong-tradeoff-after-invisibly-throttling-rival-ai-researchers/)