Google Research Releases ToolGrad for Tool-Use Data

Google Research, the University of Tokyo, RIKEN AIP, and Tohoku University introduced ToolGrad, an answer-first framework that generates tool-use training data by building verified tool chains before writing queries. Gemma-3 models fine-tuned on 500 ToolGrad samples achieve scores comparable to frontier proprietary models on the Berkeley Function Calling Leaderboard.