Verified facts
- The `inference-router` model covers software engineering, agentic workflows and reasoning; the catalog includes proprietary and open models.
- Balanced routing is the default; a budget preference can influence selection. Customer-provided evaluation sets are still a future feature.
- The preview adds no routing fee; invoked models are still billed. The roughly 22% saving comes from internal evaluations.
What changes
The provider can change routed models without redeploying the application.
Practical implication
Log the model actually selected and the per-task cost.
Availability
Belgium/EEA: the source specifies no explicit regional exclusion; availability depends on the account, plan and service region.
Limits and uncertainty
The article says “Updated October 12” while some related links show the 13th; the retained date comes from the primary text and its evaluations, not an established release time.