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Post-training 4B model using RL outperforms GPT-6 Astra on driving task

Researchers post-trained a 4B parameter model using reinforcement learning to pilot a Tesla Roadster 21 percent better than GPT-6 Astra.

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• Post-training 4B model using RL outperforms GPT-6 Astra on driving task Hacker News front page · tier D · clear net · 2026-10-30 15:27 UTC

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