WTF is GRPO? The AI Training Method That’s Changing the Game
Artificial Intelligence is evolving at an unprecedented pace, and one of the most exciting breakthroughs in recent years is Group Relative Policy Optimization (GRPO) . Developed by DeepSeek, GRPO is a next-generation reinforcement learning (RL) method designed to improve how large language models (LLMs) like ChatGPT, Claude, or Google Gemini learn and respond. Traditional reinforcement learning techniques, such as Proximal Policy Optimization (PPO), train AI models by giving feedback on their own responses. While effective, these methods have limitations when it comes to complex reasoning, long-context conversations, or multi-step tasks. GRPO takes AI training a step further by introducing a group-based learning approach . Instead of learning from feedback in isolation, GRPO allows a model to compare multiple responses from different model variations. The best-performing answers are rewarded, and the AI adjusts its behavior to align with these high-quality responses. Think of i...