OpenAI GPT-5.5

Product

Last mentioned: 6h ago

Timeline

  1. Government Directive Received

    Anthropic receives an export control directive from the US government at 5:21 PM ET ordering suspension of all access to Fable 5 and Mythos 5 by any foreign national, including foreign national Anthropic employees.

  2. Access Disabled for All Customers

    Anthropic abruptly disables Fable 5 and Mythos 5 for all customers worldwide to ensure compliance with the directive, while confirming all other Anthropic models remain unaffected.

  3. Fable 5 and Mythos 5 Announced

    Anthropic announces Fable 5 and Mythos 5, with Fable 5 marking the company's first release of a highly advanced model to the public, featuring new safeguards that block responses in specific high-risk areas.

  4. Claude Mythos Preview Released

    Anthropic releases Claude Mythos Preview with advanced cybersecurity capabilities, stunning Wall Street and government officials. Access limited to select companies under Project Glasswing.

Stories mentioning OpenAI GPT-5.5 1

Policy & Regulation Bearish

Export Control Directive Kills Access to Fable 5 and Mythos 5 Over a Single Jailbreak Claim

The US government's export control directive against Anthropic's Fable 5 and Mythos 5 hinges on a single, narrow jailbreak technique that the company says reveals only minor, previously known vulnerabilities — a capability it claims is already present in OpenAI's GPT-5.5 and other public models. The decision to classify AI model access as an export-controlled item signals a paradigm shift in AI governance that could reshape the entire frontier model landscape.

4 sources

About OpenAI GPT-5.5 coverage

This page surfaces every story mentioning OpenAI GPT-5.5 across our ai coverage. We track each entity's appearance over time so readers can trace how the narrative evolves — which developments are isolated incidents, which build into longer arcs, and which reframe how operators in the space think about the entity. Story selection uses the same multi-source verification gate applied across the rest of our coverage.

Read our editorial methodology for how we identify, deduplicate, and score entity references. Our glossary defines the technical terms used across stories on this page, and our trends index contextualizes individual developments against the longer-running ai beat. Cross-entity comparisons live on our compare view.

What you seeWhat it tells you
Story countNumber of distinct stories where OpenAI GPT-5.5 was a primary or referenced actor.
Recency clusteringWhether mentions are concentrated in a recent window (a news cycle) or distributed (a sustained arc).
Sentiment distributionAggregate sentiment of the stories mentioning this entity, weighted by impact score.
Cross-niche linksWhen the same entity surfaces in our sibling networks, we link to those views to enrich context.