Routing principle
The media plane is continuous; model input is selective. Audio is streamed to STT, while video is converted into quality-approved selected frames or explicit stills. Use the strongest model only where complexity, conflict or consequence justifies it.
Workload routing
| Workload | Route |
|---|---|
| VAD, network adaptation, blur/exposure | On-device or realtime deterministic/compact model |
| Frame relevance and crop presence | Low-cost vision model or approved local model |
| Ordinary grounded case | Benchmarked balanced reasoning model |
| Difficult differential/source conflict | GPT-5.6 Sol with higher reasoning effort |
| Web research synthesis | Strong reasoning model with controlled search |
| Exact treatment calculation | Deterministic policy service |
| High-risk final decision | Strongest approved model plus human/policy gate |
Routing inputs
Risk, case complexity, number of hypotheses, frame quality, novelty, research need, latency budget, cost budget, provider health, data-residency class and officer availability.
Fallback
Provider fallback must preserve evidence IDs and schema contracts. If live vision is unavailable, declare the limitation and switch to guided stills rather than silently routing an unverified frame.