Vitalik Buterin says AI-assisted formal verification counters limits of bug finding for secure code

Vitalik Buterin, co-founder and inventor of Ethereum, posted that AI-assisted formal verification offers a promising path for secure code and trustless systems. He linked to the article A shallow dive into formal verification published on eth.limo on May 18, 2026. Vaibhav Srivastav replied recommending Codex and GPT 5.5 as matching tools and asked about arranging access or testing.

Original post

OPV(#1853Vaibhav (VB) Srivastav|@REACH_VB

@VitalikButerin yo @VitalikButerin - would love for you to try out Codex and GPT 5.5, I think it’ll fit a lot of the direction you’re thinking about! how do we make this happen?

6:16 AM · May 18, 2026 View on X

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MB#20|@MILES_BRUNDAGE

REPLYV(#1853Vaibhav (VB) Srivastav|@REACH_VB

@VitalikButerin yo @VitalikButerin - would love for you to try out Codex and GPT 5.5, I think it’ll fit a lot of the direction you’re thinking about!

how do we make this happen?

VIvitalik.eth@VitalikButerin

Many people have claimed that with AI-assisted bug finding, secure code (and hence trustless anything) will be impossible. I have a much more optimistic take, and AI-assisted formal verification is a major part of the reason why: https://vitalik.eth.limo/general/2026/05/18/fv.html

12:40 PM · May 18, 2026 · 192.7K Views

1:16 PM · May 18, 2026 · 1.6K Views