ResearchResearch paperLarge Language Models2 sources · Oct 15, 2026

AutoSFT: An Agentic System for Automated Data Research in Supervised Fine-Tuning

We therefore introduce AutoSFT, a multi-agent system where a meta agent separates execution from analysis, gathers proposals from independent angles, and calls a synthesis subagent for capabilities the pool cannot cover, with the model, the trainer, and the budget fixed within each comparison.

Key points

  • Language model agents increasingly automate post-training, but when given the full training stack they converge on supervised fine-tuning and spend most effort revising training data.
  • Existing systems give the agent one kind of control, selecting rows from a fixed pool or calling a generator, whereas a human data engineer adjusts proportions, prunes, repairs, replaces and synthesizes the data.
  • We first run this loop with a single agent, and it reaches only one action, adjusting category proportions, while its context fills with execution output and is discarded mid-search.
  • Our findings suggest that automating SFT data research depends more on covering diverse data actions than on a stronger single action.

Sources (2)

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