AutoResearch is a -line Python tool by Andrej Karpathy, released on March –, . The README opens with: "Give an AI agent a small but real LLM training setup and let it experiment autonomously overnight."
That's the whole idea. You point an LLM agent at a training script, give it a metric to optimize, and walk away. Your agent forms hypotheses, edits the code, runs experiments, and logs results. It hit over GitHub stars in its first days and million social media impressions in hours.