Series
Reasoning effort
For some reason I've been obsessed with reasoning effort levels and post-training length penalties, so here are some interesting notes on that.
2 articles
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"Juice Numbers" and the awkward way GPT reasoning efforts work
An investigation of how GPT reasoning-effort settings map to hidden juice values, affect prompt caching, and may be learned during post-training.
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How models learn the price of thinking more
DeepSeek V4.1 and Cognition SWE-2's math behind reasoning effort