# Executive Order (June 2026)

Type: regulation

Source: Legal & RegTech Intelligence Brief — https://getlegalbrief.com/entity/executive-order-june-2026
Canonical HTML page: https://getlegalbrief.com/entity/executive-order-june-2026

## Timeline

- **2026-06-26**: Access Restricted and Partially Lifted — OpenAI limits GPT-5.6 Sol to administration-approved customers; Anthropic announces government has approved limited release of Mythos 5 to cyber defenders and infrastructure providers.
- **2026-06-12**: Models Banned — In compliance with a government directive restricting foreign national access, Anthropic withdraws Fable 5 and Mythos 5, effectively banning their use.
- **2026-06**: Executive Order Signed — President Trump signs executive order establishing a 30-day national security review framework for advanced AI models prior to public release.
- **2026**: Anthropic Warns of Mythos Capabilities — Anthropic informs authorities that its Mythos model is highly effective at identifying software vulnerabilities exploitable by malicious actors.

## Recent coverage (1 stories)

### Trump's 30-Day AI Review Triggers OpenAI Restriction of GPT-5.6 Sol
2026-07-06 01:14:33 · Sentiment: Negative · Impact: 7/10 · Sources: 24

The Trump administration has begun reviewing advanced AI models under a new executive order, leading OpenAI and Anthropic to restrict access. This sets a regulatory precedent with potential long-term implications for AI governance and voluntary compliance.
Full story: https://getlegalbrief.com/story/trump-30-day-ai-review-openai-restriction

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