Add tip recommending mid-tier models for Agentic Search

Author: robertpiosik

README.md

@@ -32,6 +32,10 @@ Without context accumulation and prompt complexity growing well past the task at
 
 ...and your quotas feel like they last forever!
 
+> [!TIP]
+>
+> For the Agentic Search, SOTA models offer diminishing returns over cheap mid-tiers.
+
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