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Sep 18, 2026 · Industry Insights

Synthetic Data's Hidden Ceiling: Why $400 Per Sample Signals the End of Easy AI Scaling

The article reveals that synthetic data, once touted as AI's infinite fuel, now costs up to thousands of yuan per high-quality reasoning sample due to MCTS exploration, formal verification, and expert review, while hitting diminishing returns from model collapse, boundary limits, and compute-cost divergence, pushing the industry toward embodied interaction and formal environments.