# Anthropic's Claude now writes code and proves it safe automatically

**Published:** October 23, 2026
**Author:** Matthias Bastian
**Source:** The Decoder
**Language:** en-US
**HTML:** https://aiqazaqstan.com/en/articles/anthropic-s-claude-now-writes-code-and-proves-it-safe-automatically

Anthropic had Claude generate mathematical proofs that existing code is correct, producing roughly 180 million lines of proof code for 123 open-source libraries. Along the way, the model caught bugs that years of testing had missed. Anthropic's goal: making formal verification…

> From the original source: **The Decoder**
> [Read full article at The Decoder](https://the-decoder.com/anthropics-claude-now-writes-code-and-proves-it-safe-automatically/)

**Tags:** #Anthropic

---

*AI Qazaqstan — non-commercial informational portal about AI in Kazakhstan. Machine translations and summaries are AI-generated.*