Claude Fable 5 is a Mythos-class model designed for problems that were previously too complex, too long-running, or too ambiguous for a model to handle. Now, Fable 5 can accomplish these tasks and more; completing end-to-end workflows that would take a person hours, days, or even weeks.

By bringing native access to Fable 5 on Databricks, you can run it directly against your enterprise data, connect it to your existing tools and workflows, and build domain-specific agents on top of it, with the governance your organization already relies on for everything else.

Claude Fable 5 is built for long-horizon autonomy, first-shot correctness on complex problems, and reliable delegation across parallel sub-agents. Databricks evaluated Claude Fable 5 across three internal benchmarks covering the hardest agentic and document AI tasks enterprises face. The results are clear: Fable 5 is the quality leader for complex, autonomous knowledge work.

On our OfficeQA Pro benchmark — which tests frontier models in their respective agent harnesses on hard document QA tasks requiring file search, web search, code execution, and multimodal document understanding — Claude Fable 5 achieves 57.9% correctness, setting a new state of the art.