Numina-Lean-Agent: An Open and General Agentic Reasoning System for Formal Mathematics · HackerPapers discussionshttps://hackerpaper.kaipfister.de/p/2601.14027/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:27:26 GMTNumina-Lean-Agent: An Open and General Agentic Reasoning System for Formal Mathematics — HN submissionhttps://news.ycombinator.com/item?id=49010310urn:hackerpapers:submission:2601.14027:49010310Wed, 22 Jul 2026 17:28:39 GMT<p>Grok is a surprisingly good automated theorem prover</p><p>TL;DR: I&#x27;m working on a Python package called OpenATP [1] that provides a common interface to coding agents for automated theorem proving in Lean. In the latest release, I added support for Leanstral 1.5 [2,3], Grok, and Kimi Code [4]. I was surprised to find that Grok has accuracy competitive with Claude Code and Codex at faster wall-clock times and a fraction of the cost. See the rest of this post and the OpenATP docs [5] for more details. Automated theorem provers take formal statements (in a proof assistant like Lean) and attempt to synthesize a proof. Unsurprisingly, LLMs have become the…</p><p>3 points; 1 discussion reply on HN. <a href="https://hackerpaper.kaipfister.de/p/2601.14027/">Paper and source history</a>. A submission is not an endorsement.</p>cs.AI