BNP Paribas is working with Mistral AI to prepare for a category of AI cybersecurity tools its US peers already use and its European supervisors cannot reliably get hold of, according to a Bloomberg report on Tuesday.

The Paris-based bank, the eurozone’s largest by assets, is one of several European institutions helping Mistral develop a cyber-focused model intended as a counterpart to Anthropic’s Mythos.

Mythos is the restricted-access AI system Anthropic launched earlier this year that can identify and exploit security vulnerabilities at machine speed; in controlled testing the model produced working exploits on its first attempt more than 83% of the time, often beating human red-teamers.

Access has been deliberately rationed to roughly 40 to 50 organisations, mostly large US tech firms, US national-security partners and a handful of US banks including JPMorgan Chase. No European bank sits on the list. The European Commission has been in stalled talks with Anthropic over access since April, with Spanish officials publicly describing the negotiations as deadlocked.

The European Central Bank has spent the past several weeks warning eurozone supervisors that Mythos-class tools change the threat picture for banks regardless of who has access. If attackers obtain a comparable model, the ECB’s Frank Elderson told banks earlier this month, defenders without one will be structurally behind.The 💜 of EU techThe latest rumblings from the EU tech scene, a story from our wise ol' founder Boris, and some questionable AI art. It's free, every week, in your inbox. Sign up now!