Anthropic releases research on Claude formal security proofs

Oct 23

1. 18:40

   Vinod KhoslaRelated discussion

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   This post contributes to heat; it is not a formal report or confirmed fact.

2. 16:58

   TMTPost · AGI

   Anthropic report: Claude generates 180 million lines of Rocq proofs, advancing formal verification to the assembly level

   The Anthropic and Theorem Labs team released a report stating that Claude generated approximately 180 million lines of Rocq proof code for 239 program entry points across 123 open-source software libraries, and found and fixed hundreds of bugs. The research is based on the RISC-V instruction set and advances verification to the assembly instruction level; Anthropic says this is the first large-scale use of AI to formally verify production software at the assembly code level. The article also notes that formal verification can only prove that a program satisfies preset properties under specific assumptions and scope, and that the costs of AI use for attackers and defenders are not symmetric.

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3. 16:58

   TMTPost · AGIRelated discussion

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4. 12:10

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5. 06:19

   Unite.AISelected

   Anthropic says Claude completed formal proofs of security properties for 123 open-source libraries

   Anthropic released research on October 22, 2026, saying that in collaboration with Theorem, Claude generated machine-checkable formal proofs of security properties at the RISC-V assembly code level for 239 fuzz test entry points across 123 open-source libraries, and patched the vulnerabilities found. The proofs cover arbitrary inputs below 64 MB and modeled Linux system responses and memory layout, totaling about 180 million lines of Rocq, with a typical proof about 600,000 lines, corresponding to a median binary length of 18,000 RISC-V instructions. Anthropic said some proofs and the RISC-V and operating system semantics have been published on GitHub, but proofs that could expose unpatched vulnerabilities will be withheld; Theorem is offering the same process free of charge to eligible open-source projects through the OSS Verify program.

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6. 06:01

   Anthropic

   Anthropic uses Claude to formally verify hundreds of open-source libraries

   Anthropic's Frontier Red Team blog introduces that, in collaboration with Theorem Labs, it used Claude to prove security properties for over a hundred real open-source libraries within weeks. Formal verification can prove that code is free of certain defects, but in the past it was only applicable to small codebases or required a large amount of expert time; Anthropic believes AI models are changing this situation. See the original link for the full research.

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