Report: Anthropic's Internal 'Model 2' Outperforms Mythos 5 on Diagnostics
imjustnewatai · x · 2026-08-15
Anthropic's 186-page risk report reveals an internal "Model 2" that significantly outperforms Mythos 5. On an internal benchmark diagnosing real infrastructure issues, Model 2 scored 62.8% versus Mythos 5's 50.3%. Anthropic estimates that 85% would allow a model to fully substitute for technical staff and potentially lead to Recursive Self-Improvement (RSI). Both models now run as persistent research agents, with Claude writing the majority of merged production code.
Related event: Anthropic's Internal Model 2 Capabilities Revealed(21 posts)→
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