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The Launch of Claude Fable 5 Anthropic is bringing its most powerful AI model to the general public for the first time, but it’s doing it with guardrails. On Tuesday, the AI firm launched Claude Fable 5, the first publicly available version of its Mythos model. Capabilities and Safety Features Anthropic says Fable 5 excels at software engineering, knowledge work, and vision, but it comes with hard safety limits. In high-risk areas like cybersecurity, biology, chemistry, and distillation, the model blocks responses and falls back to Claude Opus 4.8. Data Analysis and Pricing Pricing for both Fable 5 and Mythos 5 is $10 per million input tokens and $50 per million output tokens, double the price of Opus 4.8. Early data shows at least 95% of Fable sessions running entirely on the model’s own responses. The Impact of Fable 5 on the Industry The launch of Fable 5 comes as Anthropic prepares to enter the public markets, alongside OpenAI and Elon Musk’s SpaceX. It also follows the AI firm’s plea urging major global AI labs to establish a coordinated brake pedal on frontier AI development. The Future of AI Development Anthropic warned that systems are advancing so rapidly that they may soon achieve recursive self-improvement (RSI), autonomously improving themselves without human intervention. The company stress-tested its classifiers with jailbreak attempts before releasing Fable 5 and will require a 30-day retention on all traffic to defend against complex and novel attacks.