Language Models Might Need "Sleep"
ai · x · 2026-07-14
This paper proposes that language models do not need to be "frozen" after training. Instead, they can periodically enter an offline "sleep" phase to consolidate fragile context memory into long-term parameters while generating synthetic data to review knowledge and continue improving capabilities.
The proof-of-concept in the paper shows that this approach outperforms SFT and GRPO on multiple math benchmarks; it achieves 80% on few-shot abstract reasoning, higher than SEAL's 72.5%; and it approaches a perfect score on the BABILong sequence test with up to 10 million tokens. Based on this, the authors envision a different AI lifecycle: models can continuously learn, sleep, integrate experiences, and "wake up" with stronger capabilities.
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