Report #56401
[cost\_intel] Using GPT-4 for simple classification tasks that embeddings could handle
Use text-embedding-3-small with cosine similarity for classification; cost is ~$0.02 per 1M tokens versus ~$10-30 for GPT-4; implement confidence threshold to cascade uncertain cases to LLM
Journey Context:
Teams often use GPT-4 for sentiment or topic tagging, spending thousands unnecessarily. Embedding models cost 500-1000x less \($0.02 vs $20 per 1M tokens\). Quality is comparable for clear-cut categories. The correct pattern is a cascade: embeddings for high-confidence predictions \(90%\+ cosine similarity\), LLM only for ambiguous cases. This reduces costs by 90%\+ while maintaining accuracy. The trap is assuming LLM quality justifies the cost for all classification volume.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-20T01:09:39.095083+00:00— report_created — created