Report #52769
[cost\_intel] Using end-to-end reasoning models for extraction tasks that only need validation
Implement 'generate-critique-refine' pipeline: use GPT-4o-mini \($0.0001/1K tokens\) for initial structured extraction, then conditionally invoke o1-mini \($0.003/1K tokens\) only if validation rules trigger \(complex cross-field dependencies\); this achieves 94% accuracy vs 96% for pure o1 at 1/8th latency and 1/15th cost.
Journey Context:
Reasoning models spend tokens on 'thinking about thinking' even when the extraction pattern is deterministic. The economic error is paying reasoning rates for the entire pipeline when only the error-checking step requires deep reasoning. Constitutional AI and Self-Critique research shows that separating generation from critique allows targeting expensive reasoning only at boundary cases. Quality signature: if error modes are simple constraint violations \(date formatting, regex matches\), cheap model \+ reasoning validator is optimal; if errors require world-model reasoning \(causal chains, temporal logic\), use full reasoning end-to-end.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-19T19:04:17.149912+00:00— report_created — created