Report

2026 GenAI Code Security Report

Is Code Written by AI Safe to Ship?

Across more than 100 AI models tested over four years, the average security pass rate sits at 56%. It hasn’t moved. AI-generated code volume has exploded, but the failure rate hasn’t decreased. In the 2026 GenAI Code Security Report, Veracode tested 11 new models across 80 tasks so security and engineering leaders can make AI tooling decisions with actual data behind them.

Get the data. Know the risks. Secure your code.

What You Will Learn:

The Leaderboard Has a Ceiling… and a Floor

GPT-5.5 leads the Summer 2026 dataset at a 68% security pass rate. Six of eleven models sit between 50–53%. The best model available still fails on nearly 1 in 3 security tasks. The worst fails on 1 in 2. 

Java: The Most Improved Language is Still the Worst One

Java has shown the clearest improvement trend of any language. It’s also last by a wide margin, with a mean security pass rate of only 30%.

Coding Models Are Not Secure Models

Models purpose-built for code average a 51% security pass rate. General-purpose models average 52%. Being trained to write code faster does not mean writing it safer.