This is great, there is still so much potential in AI once we move beyond LLMs to specialized approaches like this. EDIT: Look at all the people below just reacting to the headline and clearly not reading the posts. Aristotle ( https://arxiv.org/abs/2510.01346 ) is key here folks. EDIT2: It is clear much of the people below don't even understand basic terminology. Something being a transformer doesn't make it an LLM…
1. "The search algorithm is a highly parallel Monte Carlo Graph Search (MCGS) using a large transformer as its policy and value functon." ... "We use a generative policy to take progressively widened [7] samples from the large action space of Lean tactics, conditioning on the Lean proof state, proof history, and, if available, an informal proof. We use the same model and prompt (up to a task token) to compute the value function which guides the search."
See that 'large transformer' phrase? That's where the LLM is involved.
2. "A lemma-based informal reasoning system which generates informal proofs of mathematical state-ments, breaks these proofs down into lemmas, formalizes each lemma into Lean, and iterates this process based on formal feedback" ... "First, the actions it generates consist of informal comments in addition to Lean tactics. Second, it uses a hidden chain of thought with a dynamically set thinking budget before predicting an action."
Unless you're proposing that this team solved AGI, "chain of thought" is a specific term of art in LLMs.
3. "A geometry solver which solves plane geometry problems outside of Lean using an approach based on AlphaGeometry [45]." ... following the reference: "AlphaGeometry is a neuro-symbolic system that uses a neural language model, trained from scratch on our large-scale synthetic data, to guide a symbolic deduction engine through infinite branching points in challenging problems. "
AlphaGeometry, like all of Deepmind's Alpha tools, is an LLM.
Instead of accusing people of not reading the paper, perhaps you should put some thought into what the things in the paper actually represent.