via #AIFoundry : What’s New in Microsoft Foundry Fine-Tuning | April 2026
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What's New in Microsoft Foundry Fine-Tuning | April 2026 | Microsoft Foundry Blog
April 2026 brings three major Reinforcement Fine-Tuning updates: Global Training for o4-mini with lower per-token rates across 12+ regions, new GPT-4.1 model graders for richer reward signals, and a comprehensive RFT best practices guide to help you ship specialized models faster.






