One key to test multiple models: 5 steps to design a reproducible multi-turn tool-calling mini test
Author’s note: With a single key, one fixed script, and one injected failure, I put multiple models’ multi-turn tool-calling ability side by side — and got conclusions you can reproduce and re-check. When picking a model to build an Agent, plenty of teams hit the same wall. In single-turn Q&A, the models all look about…