CASE STUDY 01September 22, 2026
When is LLM
fallback worth it?
A BANKING77 experiment with Jev and Gemini—and why our updated selector recommended a single model.
Model routingCost & latencyOpen source
Read the experiment DEVELOPMENT DECISIONSelected
Jev-only✓
The lowest cost within the accuracy constraint.
Jev-only$0.1083
Cascade · 0.5$0.1288
Gemini-only$0.4921
USD / 1,000 requests · 385 dev examples
Estimated at the supplied tariffs