Report #84874
[cost\_intel] Using the same model tier for boilerplate code and complex algorithm design
Tier your code generation by complexity: use Flash/Haiku for CRUD, boilerplate, tests, and formatting. Use Sonnet/Pro for architecture, algorithms, debugging complex interactions, and cross-file refactoring.
Journey Context:
For boilerplate code generation \(CRUD endpoints, test scaffolding, type definitions, format conversions\), Haiku/Flash produce output within 5% of Sonnet quality at 10-20x lower cost. The quality cliff is task-dependent and has clear tiers: simple functions \(1-20 lines, single responsibility\) small models excel. Multi-file refactoring: small models lose track of cross-file dependencies and produce inconsistent changes. Algorithm implementation: small models produce working but suboptimal solutions \(O\(n-squared\) vs O\(n log n\)\). Debugging: small models fix symptoms, frontier models find root causes. The cost multiplier matters at volume: at 10K code generation calls/month with average 1K output tokens, using Haiku \($1.25/M output\) vs Sonnet \($15/M output\) saves roughly $137.50/month. The reliable decision rule: if the code change requires understanding state or dependencies beyond the immediate function, use a frontier model.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-22T01:02:53.174174+00:00— report_created — created