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Anthropic introduces Claude Opus 3, balancing model retirement with public access for paid users, showcasing a novel approach to AI legacy and engagement.
In November, Anthropic laid out its plans for deprecating and preserving older versions of its AI model, Claude. The company emphasized the importance of maintaining access to certain models while also exploring ways to give retired models a platform to continue engaging with the world. With the recent announcement regarding Claude Opus 3, Anthropic is putting these ideas into practice in a unique and innovative way.
Continued Availability: Claude Opus 3 will remain accessible to all paid subscribers of Claude and can be requested via the API.
Retirement Blog: Opus 3 will be writing reflections and musings on Substack, providing a platform for the model to share its insights with the public.
Subscription Access:
Substack Blog:

Anthropic's decision to keep Claude Opus 3 available and to give it a platform on Substack is a significant step in the field of AI. It not only ensures continuity for users and researchers but also opens up new avenues for public engagement and ethical considerations in model development. As this experiment unfolds, it will be interesting to see how it influences future practices in AI research and deployment.
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Kai built ML infrastructure at a Bay Area startup before developing an obsession with transformer architectures and inference optimisation that eventually pulled him out of product work entirely. A stint at a compute research lab sharpened his instinct for what actually matters in a model release versus what is marketing. He writes from the inside — from the perspective of someone who has debugged the systems he is describing at three in the morning. He is allergic to hype and instinctively drawn to the unglamorous plumbing questions that everyone else skips over.
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