If You Replace Your LLM Endpoint, What Actually Needs Regression Testing?

1. 1Identify potential regression points such as streaming behavior, retries, timeouts, response parsing, observability, and regional latency
2. 2Review application logs and monitoring data to understand current behavior
3. 3Configure and test retries, timeouts, and response parsing with the new LLM endpoint
4. 4Implement observability tools to monitor performance and latency
5. 5Test regional latency and streaming behavior with the new endpoint

Developers and DevOps teams working with LLMs and APIs will benefit from understanding the potential risks and necessary regression testing when switching providers

💡 The real migration pain often lies in the application surface area, not the LLM model itself

💡 Don't underestimate the risks of switching LLM providers! Regression test streaming behavior, retries, timeouts, and more to avoid production regressions