Anthropic is introducing Claude Fable 5.1 and Claude Mythos 5.1 as the world's most advanced models for coding and knowledge work.

We're an AI research company that builds reliable, interpretable, and steerable AI systems. Our first product is Claude, an AI assistant for tasks at any scale. Our research interests span multiple areas including natural language, human feedback, scaling laws, reinforcement learning, code generation, and interpretability.