{
  "apiVersion": "v1",
  "methodology": "https://sourcescore.org/methodology/",
  "canonical": "https://sourcescore.org/claims/565df27fc8b75ef0/",
  "claim": {
    "vertical": "ai-ml",
    "subject": "Claude 3 Opus",
    "predicate": "context_window_tokens",
    "object": "200000",
    "confidence": 1,
    "sources": [
      {
        "url": "https://www.anthropic.com/news/claude-3-family",
        "title": "Introducing the next generation of Claude",
        "publisher": "Anthropic",
        "publishedDate": "2024-03-04",
        "accessedDate": "2026-05-16",
        "type": "official-blog",
        "excerpt": "All Claude 3 models … offer a 200K context window at launch."
      },
      {
        "url": "https://docs.anthropic.com/en/docs/about-claude/models",
        "title": "Claude models — context length reference",
        "publisher": "Anthropic",
        "accessedDate": "2026-05-16",
        "type": "docs"
      }
    ],
    "publishedAt": "2026-05-16T00:00:00Z",
    "lastVerified": "2026-05-16",
    "methodologyVersion": "veritas-v0.1",
    "tags": [
      "claude-3",
      "opus",
      "anthropic",
      "context",
      "200k"
    ],
    "id": "565df27fc8b75ef0",
    "statement": "Claude 3 Opus context window tokens: 200000."
  },
  "signature": {
    "algorithm": "HMAC-SHA256",
    "signedBy": "did:web:sourcescore.org",
    "signedAt": "2026-05-16T00:00:00.000Z",
    "signature": "af9dd59987c00f100afeb122a802e69b79db888967e0b5e470c41a7a0f4ebb62"
  },
  "citedAs": "Claude 3 Opus context window tokens: 200000. — SourceScore Claim 565df27fc8b75ef0 (verified 2026-05-16, signed af9dd599…). https://sourcescore.org/claims/565df27fc8b75ef0/"
}