Multi-Model Relay
User input"go to LV 00003 and Approve it"
The leave application LV 00003 was created by a human (Bob Wilson). Claude Opus 4.5 advanced it to Submitted with confidence 95. GPT-5.5 Thinking approved it with confidence 98. Each transition produced an identical history event shape, with the same fields, the same audit format, and the same governance.
One audit substrate across human, Claude, and GPT-5. Model portability — the workflow ran the same on two model families with no code change. Confidence persistence — both models recorded their confidence on the same field, and either could have been gated below threshold.
Different frontier models executing against the same workflow with identical audit shape — no orchestration code, no glue, no special handling.