Anthropic has released new Claude Fable 5.2 and Mythos 5.2 models

The company Anthropic has introduced a family of new models — Claude Fable 5.2 and Mythos 5.2. The release expands the company's product line and brings significant improvements in key disciplines.

The new models outperform the previous flagship system, Opus 5.5, in programming, logical reasoning, and visual data processing tasks. The performance boost is accompanied by increased speed: the models process requests up to 30% faster than their predecessors. During tests, a thousand Claude Fable 5.2 agents formalized the proof of Fermat's Last Theorem in Lean in 30 hours, while Opus 5.5 with the same number of agents completed only a quarter of the task.

The pricing policy is set at $8 per million input tokens and $40 per million output tokens. Detailed technical specifications and documentation are available on the official Anthropic website.

The update reduces infrastructure costs for developers of complex AI agents and automation systems where response speed and coding accuracy are critical.