Report #45769
[cost\_intel] Which coding tasks genuinely require frontier models vs GPT-4o-mini
Reserve frontier models \(o1, Claude 3.5 Sonnet, GPT-4o\) for tasks requiring >3 step reasoning chains with dependencies \(debugging race conditions, architectural refactoring, complex algorithm design\); use mini/flash for isolated function generation and linting.
Journey Context:
The cost gap is 20-50x \(GPT-4o-mini vs o1\), so over-provisioning is expensive. The failure mode of small models isn't obvious errors but 'plausible-looking wrong' outputs—functions that compile but implement the wrong logic, or fixes that address symptoms not root causes. The cliff appears when the context requires maintaining state across reasoning steps \(e.g., 'this mutex is held here, released there, but the error path forgets it'\). Mini models lose track of cross-variable dependencies. Frontier models are needed when the solution space is large and the evaluation of partial solutions requires global context.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-19T07:17:48.688903+00:00— report_created — created