Users will find Opus 4.8 to be a modest but tangible improvement on its predecessor. There’s still more to be done: we’re working on developing and releasing models that provide many of the same capabilities as Opus at a lower cost. Not only that, but we plan to release a new class of model with even higher intelligence than Opus. As part of Project Glasswing, a small number of organizations are currently using Claude Mythos Preview for cybersecurity work. Models of this capability level require stronger cyber safeguards before they can be generally released. We’re making swift progress on dev
Introducing Claude Opus 4.8…Related Claude Opus 4.7 was just released last month, and 4.8 is already here with some massive improvements I'm getting deja vu here. Claude still gets the heavy stuff…
…Expand Expanding Close Anthropic upgrades Claude with new Opus 4.8 model, details here Zac Hall May 28 2026 - 10:09 am PT Anthropic has released its latest AI model with Claude…
Anthropic Tuesday publicly released Claude Fable 5 , its first “Mythos-class” model that it says surpasses its previous frontier Opus models in overall capabilities. But the model’s launch today comes with…
…We assess how well Claude complies with the legitimate requests and declines the harmful ones. Claude Opus 4.7 and Claude Sonnet 4.6 responded appropriately 100% and 99.8% of the…
…To prevent model misuse, when Claude Fable 5 detects certain requests related to cybersecurity, biology, chemistry, or model distillation, the request will be routed to the Claude Opus 4.8 model. Anthropic…
…When using the Claude coding agent, the following models are currently available: Claude Sonnet 4.6 Claude Opus 4.6 Claude Sonnet 4.5 Claude Opus 4.5 When using the Codex…
…According to the company, the Mythos model shows major improvements in code reasoning and autonomy, far above Claude's current flagship model, Opus 4.8. It is also worth noting that the…
…Product GitLab Patch Release: 19.0.1, 18.11.4, 18.10.7 Read about this patch for GitLab Community Edition and Enterprise Edition. AI Claude Opus 4.8 on GitLab: Complex…
…Our sample covers February 5 to February 12, three months following the release of Claude Opus 4.5 and coincident with the release of Claude Opus 4.6. We first document how…
Ever since Anthropic first made the earth-shaking disclosure of its incredibly capable Claude Mythos AI model back in April and the steps it was taking toward a safe release of that…
