Claude Fable 5.1 Launches with 25% Price Cut
Anthropic's latest model boasts improved performance, reduced costs, and enhanced safeguards, with Fable 5.1 available now and Mythos 5.1 available through trusted access programs
Anthropic has introduced Claude Fable 5.1 and Claude Mythos 5.1, the world's most advanced models for coding and knowledge work. Fable 5.1 is generally available, while Mythos 5.1 is available only through Anthropic's trusted access programs. The new models offer improved performance, reduced costs, and enhanced safeguards.
One of the key benefits of Fable 5.1 is its reduced cost. The model is estimated to cost 25% less than Fable 5 for typical workloads, with savings of up to 45% for highly agentic work. This is due to a 75% reduction in the price of cache reads.
Fable 5.1 also boasts improved performance, achieving similar or better results than Fable 5 at low or medium effort, and much higher performance at higher effort tiers. The model can be used to discover software vulnerabilities, but not to develop exploits for them.
In terms of safeguards, Fable 5.1 has strengthened mechanisms to complicate distillation attacks. The model's capabilities are designed to support work in cybersecurity and the life sciences, with Mythos 5.1's safeguards specifically tailored for these fields.
## What it means The launch of Claude Fable 5.1 and Claude Mythos 5.1 sets a new standard for coding, knowledge work, and long-running problem-solving tasks. The models' improved performance, reduced costs, and enhanced safeguards make them an attractive option for businesses and individuals looking to leverage AI for scientific progress.
The reduced cost of Fable 5.1 is likely to make it more accessible to a wider range of users, while the improved performance and safeguards will provide greater confidence in the model's abilities. As AI continues to play a larger role in various industries, the development of advanced models like Claude Fable 5.1 and Claude Mythos 5.1 will be crucial in driving innovation and progress.
## Background Anthropic's introduction of Claude Fable 5.1 and Claude Mythos 5.1 is the latest development in the company's efforts to advance AI research and capabilities. The models' improved performance and reduced costs are likely to have a significant impact on the industry, enabling businesses and individuals to leverage AI for a wide range of applications.
In recent months, Anthropic has been working to address customer feedback on price, data retention, and safeguards. The introduction of Fable 5.1 and Mythos 5.1 demonstrates the company's commitment to listening to its customers and providing solutions that meet their needs.
