LEAKED Claude Mythos (Capybara): More POWERFUL Than Opus 4.6

Summary

Anthropic is rumored to be working on a new AI model called Mythos, internally nicknamed Capybara, which is expected to sit above Opus 4.6 in their model lineup. The leak surfaced on a website — likely published by accident, similar to how product listings sometimes go live prematurely — and was quickly picked up by outlets like Fortune. Rather than denying it, Anthropic confirmed Mythos is real and described it as a 'step change,' though no official release date has been announced yet. So what makes Mythos significant? If it truly outperforms Opus 4.6, that's a big deal. Opus 4.6 is already considered the benchmark that other models — including those from Chinese AI labs and OpenAI — compare themselves against. The hosts argue that Anthropic has a structural advantage: because top engineers at companies like Meta actively use Claude Code, Anthropic is continuously learning from the best coding patterns in the industry. That feedback loop, they suggest, is why Anthropic keeps pulling ahead. Mythos is also expected to have a strong focus on cybersecurity, which the hosts see as a smart move. A common criticism of AI-generated code is that while it's easy to produce, it often introduces security vulnerabilities that developers don't fully understand. By targeting cybersecurity, Anthropic appears to be positioning Mythos for serious enterprise and production-level development teams. On the competitive front, the hosts note that OpenAI's GPT models are still struggling to match Opus-level performance, while Google has shifted strategy with Gemini Flash — focusing on speed and low cost rather than raw capability. The implication is that Anthropic is doubling down on quality while competitors race to the bottom on price. Expect Mythos to be more expensive than current Opus pricing, with early access likely rolling out to existing Anthropic customers first. No confirmed launch date yet, but given the leak, an announcement could come sooner than expected.