Mistral Large 4 deploys 133 agents to find and patch a Django vulnerability

Mistral AI's open-weight model ran a full triage, reproduction, and patch workflow on a recent Django CVE Mistral AI pointed its new Large 4 model at a real security flaw and let it work. The model used 133 agents to find, verify, and patch a recent vulnerability in the Django web framework. What Mistral actually showed The demonstration was released on November 4, 2026. Mistral presented it as an end-to-end run, covering everything from first discovery to a finished fix. The 133 specialized agents split the work among themselves. Some mapped the codebase. Others located the flaw, simulated attacks against it, reproduced the issue, and generated a patch. Security teams call this sequence triage, reproduction, and patching. Put simply, the model figures out what is broken, proves the problem is real, and then fixes it. Mistral shared the run as a time-lapse video sped up to 90x. The model goes by Mistral Large 4, though it also carries the nickname “Le Chonk.” The test target was not hypothetical. Django had shipped its own security updates on November 3, 2026, one day before the demonstration came out. Those updates addressed several CVEs, including memory exhaustion and log inject...