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This would mark the first public availability of Anthropic's most capable frontier model, which was previously restricted to select partners due to its advanced cybersecurity capabilities, representing the broader release of "Mythos-class models" Anthropic had previously signaled.
Developers using Claude Opus 4.7 must remove sampling parameters from API calls and switch to adaptive thinking with effort control, requiring code updates and a shift from parameter-based to prompt-based behavior guidance.