Open Rack

If an agent spends a meaningful share of its time doing orchestration and tool work, separating that from inference could reduce wasted accelerator capacity and make the system easier to scale in parts.

The Open Rack approach may also give operators more choice in how those parts fit together.

I'd treat Helion as an architectural proposal, with a plausible advantage, not a proven cost-saving.

The evidence to watch will be partner implementations, workload-level performance, and whether the RAR outer can allocate calls across different models without creating a new bottleneck or an awkward layer of lock-in.