Anthropic reportedly won't release Mythos 2, allegedly held back by US government
ccerrato147 · x · 2026-08-18
Dylan Patel of SemiAnalysis reveals that Anthropic's most powerful model, Mythos 2, is done training but won't be released, similar to OpenAI's situation with Astra.
- Regulatory Impact: Patel argues the narrowing gap between open and frontier models is "artificial," driven by US government restrictions preventing the release of top-tier models.
- Internal Loop: While the public can't access these models, Anthropic continues to use Mythos 2 internally to train Mythos 3, maintaining their internal feedback loop.
- Implications: The external perception of model parity is misleading, as the actual capabilities are being suppressed by policy rather than technical stagnation.
Related event: Report: Anthropic Withholds Its Strongest Model Mythos 2(2 posts)→
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