Report #101879
[cost\_intel] How do I know if my task is on the 'instruct is enough' or 'reasoning is required' side of the cliff?
Run a small evaluation on your own data with both model classes. If the accuracy gap is under 10 percentage points, instruct is enough. If it is over 20 points or cheap-model errors are systematic on multi-step logic, move that task type to reasoning.
Journey Context:
Published benchmarks are directional but your data distribution matters. SWE-rebench shows model performance varies by task vintage and contamination, so real-world evaluation is essential. Build a 50-200 example golden set covering your actual query types, measure pass@1 and cost-per-correct-answer for instruct versus reasoning. Look at error patterns, not just headline numbers. If cheap-model errors are random factual slips, a verifier helps. If errors are consistent failures on a task type such as index math, boundary conditions, or multi-hop inference, that task type belongs in the reasoning bucket. The common mistake is relying on public benchmarks without testing your own prompt distribution.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-07-07T05:36:08.037946+00:00— report_created — created