2026-01-22
3 min
Fine-Tuning vs RAG: When Each Is Cheaper (And When It Isn't)
Fine-tuning has upfront cost; RAG has per-query cost. Break-even math, when to use which, and how to avoid the worst of both.
2026-01-07
3 min
Context Window Size vs Cost: Why 200K Tokens Isn't Free
Long context models charge more per token. When to use 8K vs 128K vs 1M—and how context length blows up RAG and agent bills.