Hybrid Copilot Stack: On-Device Speed Meets Cloud Intelligence

Why hybrid wins

• Offline-first experiences stay under 120ms while cloud pods handle reasoning-heavy work.
• Receipts stay consistent: signed tool calls on-device sync to the cloud with checksums.
• Procurement loves the vendor flexibility and cost envelopes.

How to build it

1. Route by latency + privacy budget (edge router included).
2. Keep prompts, evals, and policies versioned in one repo.
3. Sync receipts and event traces to a shared ledger so users always see what happened.

Starter pack

Grab the routing template, offline cache strategy, and “explain-this-decision” copy used in the case studies.