Comparisons
- Veris with LangSmith, Braintrust, Arize, Langfuse and promptfoo: what each tool is for, what none of them provides, a side-by-side table, and how they fit together in one loop.
- How to test an AI agent before production: the five checks, the tools for each, and what a controlled sandbox with stateful twins, simulated users and injected faults adds.
Two questions come up on almost every call and are answered on the FAQ page: why an independent bench when the agent vendor has its own simulation, and how to benchmark several vendors' agents before buying.