Large Language Models (LLMs) are no longer just next word predictors.
Source Stevenadler on SubstackA thoughtful post by Steven Adler on the common refrain that LLMs are just “next word predictors.” This pejorative statement is the dumbest and the most widespread form of cope I see.
I feel torn about whether the RLHF generation should count as ‘just predicting the next word,’ but the latest generation is a very clear “no” for me. This generation is even more different: The AI is presented during training with hard problems, and it thrashes around until it has learned a general skill of problem-solving. I know this sounds pretty wild, but it works; this is the technique11 that lets the AI outperform the top mathematics students, who have also committed themselves to becoming expert problem-solvers.
The latest models are more “path-finder” than “next-word predictor.” At any given moment, these AIs aren’t really trying to predict what word comes next at all; they are selecting the next step to solve a problem, and then executing that problem-solving step; they are pursuing a strong answer in a wide variety of ways, rather than outputting a response directly. (More generally, this type of path-finding AI is called a “reasoning model.”)
Mostly, the AI responses you see ‘in the wild’ aren’t from these models, and so it’s understandable to have out-of-date beliefs about AI’s abilities. Much more common is to see an embarrassing response from, say, Google’s instant search summary, which is free, fast, and rather gaffe-prone. In contrast, ChatGPT 5.2 Pro is excellent quality, but it also costs a ton and takes roughly 15 minutes per query, so almost nobody uses it
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