June 9th, 2026
Claude Fable 5 Available in Julius
By: Julius AI Team · 2 min read
Today Anthropic released Claude Fable 5, the first publicly available Mythos-class model, and its capabilities exceed any model they've previously made generally available. All Julius paid users and teams now have access to this state-of-the-art model and its capabilities.
Performance and Testing
We have been testing Fable 5 internally, and our results mirror the benchmarks. Across our test suite of real-world use cases, the model performed consistently across all work use cases, including complex, long-thinking tasks, and multi-step analysis.
Availability & Usage
Starting today Fable 5 is available to all paid users and teams. That means when you ask Julius a question about your data, the model reasoning through your query, writing the analysis, and building your charts is the most advanced AI available anywhere.
Nothing changes about how you use Julius. Whether it's analyzing financial data, optimizing marketing and campaign performance, or doing work in spreadsheets. Try it out in Julius today.
