Anthropic announced the release of its new Claude Fable 5.1 and Claude Mythos 5.1 models on September 1, referring to them as “the world’s most advanced models for coding and knowledge work.”

AI companies are now racing to make powerful models cheaper as Chinese AI firms push low-cost pricing. Anthropic’s Claude Fable 5.1 cuts AI workload costs through cheaper caching, while the company also focuses on long-running AI agents and safety.

Anthropic today introduced Claude Fable 5.1 and Claude Mythos 5.1, which the company says are the "world's most advanced models for coding and knowledge work". According to Anthropic, Claude Fable 5.1 sets a new standard for coding, knowledge work, and long-running problem-solving tasks. It achieves similar or better results than Fable 5 at low or medium effort, and has much higher performance at higher effort tiers.

Anthropic today introduced Claude Fable 5.1 and Claude Mythos 5.1, which the company says are the "world's most advanced models for coding and knowledge work". According to Anthropic, Claude Fable 5.1 sets a new standard for coding, knowledge work, and long-running problem-solving tasks. It achieves similar or better results than Fable 5 at low or medium effort, and has much higher performance at higher effort tiers.

Anthropic has released Claude Fable 5.1 and Mythos 5.1, two versions of the same underlying model aimed at longer-running agentic work. "For enterprise buyers, however, the release is about more than another round of benchmark gains," reports VentureBeat. "Anthropic is simultaneously changing the ec...

Anthropic has released Claude Fable 5.1 and Mythos 5.1, two versions of the same underlying model aimed at longer-running agentic work. "For enterprise buyers, however, the release is about more than another round of benchmark gains," reports VentureBeat. "Anthropic is simultaneously changing the ec...