Anthropic releases new Mythos and Fable models amid RSI concerns
Anthropic has released updated Mythos and Fable AI models, featuring performance improvements and lower costs for enterprise users. The release follows a third-party report suggesting the company may be approaching recursive self-improvement capabilities.
Why it matters
The potential for AI to achieve recursive self-improvement is a major safety concern in the tech industry, impacting how labs develop and monitor future models.
Anthropic released new versions of its most advanced models on Monday, with the launch of Mythos 5.2 and Fable 5.2. The company says the new models “show improvements in areas like coding, reasoning, and vision,” and communicate more clearly with users.
Notably, Anthropic is lowering the cost of Fable from $10 to $8 per million input tokens. As a result, Fable 5.2 is now cheaper than its primary competitor GPT-6 Astra. Anthropic says that the new version of Fable will return responses 30% faster across effort levels. Faster inference serving is available for double the price.
Fable 5.2 is also compatible with zero data retention (ZDR) policies through the Enterprise Frontier Safeguards system , long a sticking point for many enterprise clients.
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