Lesson 053: Evaluation harness depth
Focus
Bias toward observable metrics, not model marketing. Token Evaluation harness depth:53 keeps neighbouring lessons differentiable.
Key ideas
- Thread: Evaluation harness depth · drill v3 · spin
694763. - 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
Token CFO scratchpad
- prompt_budget_tokens: 1645
- completion_budget_tokens: 590
- cache_signature: `6ac7`
Hypothesis: halving completions moves P95 `8`%; record actuals.
Practice
Practice Simulate degraded retrieval once; screenshot graceful degradation copy. — 53 Bump literals mindset by 33.