The Course object

{
  "id": "crs_01HX9N5AB3M0R6P02RT9QZSF8K",
  "object": "course",
  "name": "Intro to Special Relativity",
  "description": "An undergraduate intro course covering frames, the postulates, time dilation, length contraction, and mass-energy equivalence.",
  "language": "en",
  "duration": { "hours": 12, "hours_generated": 11.5 },
  "length": { "words_per_hour": 2400, "words_generated": 27600 },
  "status": "ready",
  "ai": {
    "instructions": "Use SI units. Prefer derivations over hand-waving.",
    "evaluator": { "model": "claude-sonnet-4-6" }
  },
  "tutor": {
    "enabled": true,
    "name": "Dr. Hawking",
    "voice": "encouraging-academic"
  },
  "image": "https://cdn.hawkings.education/i/crs_01HX9.../cover.webp",
  "metadata": { "internal_code": "PHYS-201" },
  "cohorts": ["coh_01HX9N5AB3..."],
  "created_at": "2026-05-10T12:00:00Z",
  "updated_at": "2026-05-10T12:34:56Z"
}