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Claude Mythos 5.1

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Headlines · 3

  1. US reverses block; UK AISI regains pre-release access to frontier AI models

    The US has reversed last month's order that told OpenAI, Anthropic and others to stop sharing new models with the UK's AI Security Institute, restoring the agency's pre-release access to frontier models from Anthropic, Google DeepMind and OpenAI, according to The Daily Telegraph and other outlets. UK AI Minister Kanishka Narayan said Britain had worked closely with the US to keep that access and announced a task force to protect UK government systems from AI-driven attacks, saying he wants Britain to be "one of the hardest countries in the world to attack using artificial intelligence." Reports say Anthropic had previously withheld its Claude Mythos 5.1 model from the institute; the White House, OpenAI and Anthropic did not immediately respond to requests for comment.

    Techmeme · 🔥 0
  2. OpenAI and Anthropic face a holiday of agents, pricing and scrutiny

    A roundup from Huxiu describes a crowded holiday period for OpenAI and Anthropic, including the reported delay of GPT-6.1 Astra, the launch of Dots and GPT-6.1 Sol, financing activity, product changes, and regulatory hearings. It argues that competition is shifting from model capability alone toward agent execution, cost efficiency, safety controls, and enterprise access, while several incident and product claims remain attributed to media reports or company statements.

    虎嗅 AI · 🔥 0
  3. Expanding the Cyber Verification Program

    We’re launching a new, expanded version of our Cyber Verification Program (CVP), which makes advanced cyber capabilities and reduced blocking classifiers available to qualifying security professionals. The program now consists of three access tiers, which allow security teams to apply for the level of access that best suits their work. Each tier includes access to our most capable models, including Claude Opus 5.5, Claude Sonnet 5.5, Claude Mythos 5.1, and new models moving forward. Interested customers can apply here. Cybersecurity is inherently dual use: the same capabilities that enable a s

    Anthropic · News · 🔥 0

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