What changed
Model routing is an operating model, not a marketing slogan.
Primary, secondary, fallback models should each have clear task boundaries.
Why it matters
Reliability should be designed before model count grows. Workflow signals matter when they shorten the path from demand to delivery, not merely when they add another tool name to the list.
AI platform leads, product managers, reliability teams should use the signal to decide what must be clearer for users, buyers, or operators before the next page, workflow, or offer is shipped.
What to check
Map task classes to primary/secondary/fallback models and define output format requirements.
Keep the test narrow: one low-risk task or tool entry before connecting permissions, logs, failure handling, and human takeover to production.
What needs verifying
No fallback leads to unstable production behavior during model incidents. The original source remains linked so readers can separate the announcement from this site's interpretation.