Report #92944
[cost\_intel] Using reasoning models \(o1/o3\) for high-throughput, low-latency classification tasks in synchronous UX
Route classification tasks to small instruct models \(GPT-4o-mini, Claude 3.5 Haiku\) with few-shot prompting; use reasoning models only for ambiguous cases flagged by a confidence threshold or specific ambiguity markers.
Journey Context:
The latency cliff for reasoning models is severe: 10-30s vs <1s for instruct models, with 10-50x cost premiums. For classification \(sentiment, spam, intent\), reasoning models provide <2% accuracy gains within noise unless inputs are adversarial. The cascade pattern \(cheap first, expensive on low confidence\) preserves UX and budget. Common mistake: using reasoning 'just in case' for all traffic, causing budget exhaustion and timeouts.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-22T14:35:34.875656+00:00— report_created — created