AISN #76: Fable 5 Restrictions Lifted & OpenAI Limits GPT-5.6 Release
<p> Also: Recent benchmark scores suggest rapid capabilities progress. </p> <p> Welcome to the AI Safety Newsletter by the Center for AI Safety. We discuss developments in AI and AI safety. No technical background required.</p><p> In this edition, we look at the re-release of Anthropic's latest model, Fable 5, the US government's decision to restrict access to OpenAI's GPT-5.6, and two benchmarks that suggest AI capabilities have been improving exponentially in recent months.</p><p> Listen to the AI Safety Newsletter for free on Spotify or Apple Podcasts.</p><p><strong> Fable 5 Access Restored Globally</strong></p><p> On June 30, Anthropic announced that the US government had lifted its restrictions on Fable 5, and the model was redeployed to users globally on July 1. The White House implemented these restrictions due to a cybersecurity jailbreak that is now addressed.</p><p> The US government restricted Fable 5 shortly after its release in early June. On June 9, Anthropic released Fable 5 to the public, alongside their continued private deployment of Claude Mythos, the version of the model without safeguards, for trusted organizations. On June 12, the US government issued a directive banning both models for non-US citizens due to national security concerns with its cybersecurity abilities. Anthropic then [...]</p> <p>---</p><p><strong>Outline:</strong></p><p>(00:42) Fable 5 Access Restored Globally</p><p>(04:12) OpenAI Limits Initial GPT-5.6 Release at Government Request</p><p>(06:49) Recent Benchmark Scores Show Rapid Capabilities Improvements</p><p>(09:13) In Other News</p><p>(09:16) Government</p><p>(10:39) Industry</p><p>(11:32) Civil Society</p> <p>---</p> <p><b>First published:</b><br/> July 6th, 2026 </p> <p><b>Source:</b><br/> <a href="https://newsletter.safe.ai/p/aisn-76-fable-5-restrictions-lifted?utm_source=TYPE_III_AUDIO&utm_medium=Podcast&utm_content=Source+URL+in+episode+description&utm_campaign=ai_narration" rel="noopener noreferrer" target="_blank">https://newsletter.safe.ai/p/aisn-76-fable-5-restrictions-lifted</a> </p> <p>---</p> <p>Want more? Check out our <a href="https://newsletter.mlsafety.org/?utm_source=TYPE_III_AUDIO&utm_medium=Podcast&utm_content=Episode+description+footer" target="_blank" rel="noreferrer">ML Safety Newsletter</a> for technical safety research.</p> <p>Narrated by <a href="https://type3.audio/?utm_source=TYPE_III_AUDIO&utm_medium=Podcast&utm_content=Narrated+by+TYPE+III+AUDIO&utm_term=center_for_ai_safety&utm_campaign=ai_narration" rel="noopener noreferrer" target="_blank">TYPE III AUDIO</a>.</p> <p>---</p><div style="max-width: 100%";><p><strong>Images from the article:</strong></p><a href="https://substackcdn.com/image/fetch/$s_!plUx!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F03179148-854b-4cae-b73b-d76d5e0b6a1a_1200x655.png" target="_blank"><img src="https://substackcdn.com/image/fetch/$s_!plUx!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F03179148-854b-4cae-b73b-d76d5e0b6a1a_1200x655.png" alt="Howard Lutnick tweets: "Over the past two weeks, we have worked closely with Anthropic to analyze and approve Fable 5 to ensure alignment across the US Government and strengthen America's leadership in AI." The quoted tweet, by Susie Wiles, reads: "Under President Trump's leadership the United States is the undisputed winner in the AI race. My gratitude to companies across industries who continue to work closely with the White House to implement the President's EO: "Promoting Advance..."." style="max-width: 100%;" /></a><hr style="margin-top: 24px; margin-bottom: 24px;" /><a href="https://substackcdn.com/image/fetch/$s_!PPiY!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1de67872-0745-4af2-80ad-c89131af8405_1200x1072.png" target="_blank"><img src="https://substackcdn.com/image/fetch/$s_!PPiY!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1de67872-0745-4af2-80ad-c89131af8405_1200x1072.png" alt="OpenAI tweets: "Introducing a limited preview of GPT-5.6 Sol, our next generation frontier model, as well as GPT-5.6 Terra, a balanced model for efficient, everyday work, and GPT-5.6 Luna, a fast and affordable model for high-volume work." An image shows the Sun labeled "Sol", Earth labeled "Terra", and the Moon labeled "Luna" against a starry space background with text reading "Previewing GPT-5.6 Sol: a next-generation model"." style="max-width: 100%;" /></a><hr style="margin-top: 24px; margin-bottom: 24px;" /><a href="https://substackcdn.com/image/fetch/$s_!UvJB!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6eb19f99-7b9b-469d-9b10-dd4bce4ac1ea_1540x936.png" target="_blank"><img src="https://substackcdn.com/image/fetch/$s_!UvJB!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6eb19f99-7b9b-469d-9b10-dd4bce4ac1ea_1540x936.png" alt="Full-automation rate on the Remote Labor Index: the share of projects where each model's deliverable was judged at least as good as the professional's." style="max-width: 100%;" /></a><hr style="margin-top: 24px; margin-bottom: 24px;" /><a href="https://substackcdn.com/image/fetch/$s_!EKY1!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F10e9ef1f-e820-4523-8d67-8a885b462e81_2048x636.png" target="_blank"><img src="https://substackcdn.com/image/fetch/$s_!EKY1!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F10e9ef1f-e820-4523-8d67-8a885b462e81_2048x636.png" alt="Example results from an RLI task involving ring design using 3D CAD tools. Fable 5 came closer than any other model to meeting a human professional standard." style="max-width: 100%;" /></a><p><em>Apple Podcasts and Spotify do not show images in the episode description. Try <a href="https://pocketcasts.com/" target="_blank" rel="noreferrer">Pocket Casts</a>, or another podcast app.</em></p></div>
