Lesson 065: Multimodal cost discipline
Focus
Document interfaces between humans, retrieval, and policy engines. Token Multimodal cost discipline:65 keeps neighbouring lessons differentiable.
Key ideas
- Thread: Multimodal cost discipline · drill v5 · spin
189469. - Habit: pair every model utterance with a trace_id you could paste into Grafana.
- Guardrail: write one RACI bullet referencing this lesson tomorrow.
Deep dive notebook
Synthetic drill artefacts
Logging field note
| Field | Retention |
|-------|-----------|
| trace_id | 9 days |
| prompt_hash_sha256 | permanent |
| completion_excerpt_redacted | 24h hot, then cold vault |
Heuristic `pii-mask-v0` tags sensitive spans before persistence.
Practice
Practice Simulate degraded retrieval once; screenshot graceful degradation copy. — 65 Bump literals mindset by 29.