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Test-Time Compute and GRPO in Practice: From PPO to Critic-Free Reinforcement Learning

This story is from 2026-09-20. It is preserved in the archive; the latest stories are on the live feed.

Introduction: The Pre-training Wall and the Dawn of Test-Time Scaling For the past several years, the foundational law of frontier LLM development was Chinchilla's Pre-training Scaling Laws : stack deeper transformer layers, ingest multi-trillion token corpora, and burn increasingly massive GPU clu…

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  1. 2026-09-20 03:13 · DEV Community — Machine Learning
    Test-Time Compute and GRPO in Practice: From PPO to Critic-Free Reinforcement Learning

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