Key facts
- Anthropic released Claude Fable 5.1 and Mythos 5.1.
- Fable 5.1 achieved a 52.6% score on the Terminal-Bench-Science 0.1 benchmark.
- The new models offer performance gains and lower costs.
- Fable 5.1 includes Zero Data Retention and Enterprise Frontier Safeguards.
- These features enhance privacy and allow client-controlled monitoring.
- The updates are scheduled for a June rollout.
Anthropic has released its latest AI models, Claude Fable 5.1 and Mythos 5.1, which demonstrate substantial improvements in performance benchmarks and offer reduced operational costs. The Fable 5.1 model, in particular, achieved a score of 52.6% on the Terminal-Bench-Science 0.1 benchmark.
Key enhancements in Fable 5.1 include the introduction of Zero Data Retention and Enterprise Frontier Safeguards. These features are designed to bolster privacy protections and provide clients with greater control over monitoring their AI usage. The new capabilities are slated for release in June.