Claude Fable 5 and Claude Mythos 5

Claude Fable 5 and Claude Mythos 5 represent the latest advancements in AI models, with exceptional performance across software engineering, knowledge work, vision, scientific research, and cybersecurity. Released with significant safeguards to mitigate risks, especially in cybersecurity and biology, Fable 5 offers state-of-the-art capabilities, outperforming previous models on complex tasks. It is available at $10 per million input tokens and $50 per million output tokens, with access initially limited to certain tiers and projects. Mythos 5, designed for specialized users like cyberdefenders, lifts some safeguards and is part of Project Glasswing, developed in collaboration with the US government. The models' capabilities extend to accelerated drug design and novel scientific hypotheses, with a commitment to improving safeguards and reducing false positives. The launch aims to democratize advanced AI capabilities safely, with ongoing efforts to expand access through trusted programs while maintaining rigorous safety measures.