Anthropic Confirms Claude Mythos: Next-Generation AI Model Above Opus Tier

Anthropic has confirmed the existence of Claude Mythos, a next-generation AI model that surpasses Claude Opus in capability. The confirmation came after details about the model leaked in the wake of the Claude Code source code exposure in late March 2026.

Claude Mythos represents an entirely new tier in Anthropic's model hierarchy, above the existing Haiku, Sonnet, and Opus models. According to early reports, the model excels particularly in coding, reasoning, and cybersecurity tasks.

Anthropic states that Mythos is currently being tested with select customers in early access. The company has not provided an official launch date, but speculation points to a possible public release around October 2026, potentially coinciding with a rumored Anthropic IPO.

Forbes describes Mythos as one of the new models breaking the surface in 2026, alongside other developments in the AI landscape. The confirmation arrives at a time when competition between the major AI labs is more intense than ever, with OpenAI, Google DeepMind, and Meta all pushing the boundaries of what language models can achieve.

For business leaders and CIOs, Mythos signals that the next major leap in AI capability is approaching. Organizations already using Claude should prepare for new opportunities in automation, code review, and security analysis.