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Lean Verified Transformers

Lean Verified Transformers is Lean Verified Tokenizers ( ). It is ranked #776 on the AI Radar, in AI research, first seen 51 days ago and shared in 4 posts (65.3k views).

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What Lean Verified Transformers says about itself

Rational vectors, sequence models, and verified parallelism in Lean.

Lean Verified Transformers — Lean Verified Transformers Skip to content Lean Verified Transformers Lean Verified Transformers This post explores writing formally verified ML code in Lean. Since the cost of proofs is declining rapidly and the amount of code generated is skyrocketing, the value of verified code seems likely to climb. While understanding proofs remains challenging, collaborating with AI to get proofs of easy-to-understand properties seems like a natural middle ground. The goal of this post is to verify foundational properties of Transformers. These are critical properties that are used for parallelization and optimization,…

What people said about Lean Verified Transformers on X

Deep Learning Speedrun - (https://srush.github.io/prereqs-of-deep-learning/) What is the minimal amount of Math you need to train an MNIST model?

— @srush_nlp, 8 days ago · 489 likes · see the post

Lean Verified Tokenizers (https://srush.github.io/verified-tokenizer/) Training-inference mismatch kills RL runs, but yet we build messages in Jinja? Prototypes a Lean-verified Rust agent pipeline.

— @srush_nlp, 9 days ago · 390 likes · see the post

Love seeing ideas from Miles' Token-In-Token-Out work inspire new research! Instead of just testing that training sees the exact tokens the model generated, Sasha takes it a step further, formally verifying key properties of a Rust tokenizer in Lean. That's the kind of rigor agentic RL needs. Fascinating work,…

— @radixark, 9 days ago · 31 likes · see the post

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FAQ

What is Lean Verified Transformers?

Lean Verified Tokenizers ( ) It was first shared on X 51 days ago and is ranked #776 on the AI Radar.

Is Lean Verified Transformers free?

It is open source.

Who shared Lean Verified Transformers?

2 accounts on X, including @srush_nlp, @radixark, in 4 posts totalling 65.3k views.

Every post is read and classified by AGK Intelligence: what it is, which market it belongs to, and whether the link is a real tool. 65.6k posts from 5k X accounts over the last 14 days, 10.4k tools, 19 markets. New posts are collected several times an hour and the full ranking is recomputed every hour — last update 2026-11-06 15:10 UTC. Full method.