Model
Mythos 5.1
- Latest development
- Sep 1, 2026
- Published intelligence
- 2
- Active developments
- 0
Follow Mythos 5.1 to track meaningful changes across developments involving Mythos 5.1.
Latest intelligence
- The Verge
Anthropic launches Claude Fable 5.1 and says it’s up to 45 percent cheaper for agentic work
Anthropic has released Claude Fable 5.1 and Mythos 5.1, stating that the updates address customer feedback regarding costs, data retention policies, and overly restrictive safeguards. The company claims Claude Fable 5.1 delivers improved performance over Fable 5 while reducing typical pricing by approximately 25 percent and lowering costs for complex agentic tasks by up to 45 percent.
- DevelopmentDeveloping1 report
AWS makes Claude Fable 5.1 available on Amazon Bedrock