Provider drift broke our regression evals. We pinned versions through Bifrost.
A software engineering team experienced a significant drop in their automated regression evaluation scores due to silent model updates from a third-party provider. The team discovered that the model they were using was being updated behind a floating alias, causing their evaluation harness to test different versions without realizing it. To resolve this, they implemented a gateway solution that enforces the use of exact, dated model strings and added monitoring to detect any changes in the underlying model. AI
IMPACT Highlights the critical need for version pinning and observability when integrating with LLM providers to ensure evaluation integrity.