TREE NEWS update: Anthropic PBC has granted the EU cybersecurity agency ENISA access to its Mythos AI model, more than three months after first saying it would open access to the EU. “After constructive engagement with Anthropic, we can confirm that ENISA has been granted access to Mythos 5 and is currently testing it,” European Commission spokesperson Thomas Regnier said in an email.
Anthropic Gives EU Cybersecurity Agency Access to Mythos AI Model
The significance here is less the model itself than the precedent: a frontier AI vendor granting a bloc-level regulator direct testing access, which turns ENISA into an early evaluator rather than a downstream rule-taker. It matters for other AI developers facing similar EU expectations, since voluntary access now functions as a de facto benchmark for engagement. The open question is whether this stays a one-off arrangement or becomes the template Brussels expects more broadly.
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