{
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    "costPerMTokOutput": 0,
    "pricingNotes": "Unknown for direct Anthropic API access; gated research preview access is not self-serve priced in public docs.",
    "supportsExtendedThinking": true,
    "supportsAdaptiveThinking": true,
    "supportsThinkingBudgetTokens": false,
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    "kind": "reasoning",
    "contextWindowTokens": 0,
    "contextWindowNotes": "Unknown in public docs; do not infer from other Claude model families.",
    "accessStatus": "gated-research-preview",
    "accessNotes": "Invitation-only/gated research preview for qualified safety and security research workflows.",
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    "releaseDate": "2026-04-07",
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    "lifecycleStatusChangedAt": "2026-04-07",
    "modelCardUrl": "https://red.anthropic.com/2026/mythos-preview/",
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      "to": "model:claude-mythos-preview@current",
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}