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Oct 31, 2026 · Artificial Intelligence

T2J-Bench: Can Coding Agents Preserve Training and Inference Behavior in PyTorch-to-JAX Migration?

Google researchers introduce T2J-Bench, a benchmark with 63 repository-level tasks evaluating coding agents on PyTorch-to-JAX migration, and TwinHarness, a harness that uses executable source code as feedback to improve migration fidelity, achieving an 11.4% relative score improvement over baseline agents.