Lesson 064: Multimodal cost discipline
Focus
Document interfaces between retrieval, prompts, and policy engines. Token Multimodal cost discipline:64 keeps neighbouring lessons differentiable.
Key ideas
- Thread: Multimodal cost discipline · drill v4 · spin
754071. - Habit: attach a trace_id to every completion you would paste into an ops dashboard.
- Guardrail: add one RACI bullet for prompt or index changes before tomorrow's standup.
Deep dive notebook
Synthetic drill artefacts
Token CFO scratchpad
- prompt_budget: 1712
- completion_budget: 635
- cache_key: `810b`
Hypothesis: halving completions moves P95 ~3% — record actuals.
Practice
Practice Pair with security on one prompt-injection tabletop scenario. — 64 Bump 19.