{
  "id": "chatgpt",
  "name": "ChatGPT (Nov. 2022 launch model)",
  "developer": "OpenAI",
  "release_date": {
    "value": "2022-11-30",
    "source": "https://web.archive.org/web/20230102000459/https://openai.com/blog/chatgpt/",
    "status": "recorded"
  },
  "weights_status": "closed",
  "availability": {
    "value": "never_released",
    "checked": "2026-09-24",
    "source": "https://web.archive.org/web/20230102000459/https://openai.com/blog/chatgpt/",
    "note": "Weights never released; API access status not tracked by this field."
  },
  "license": {
    "value": "Proprietary service; no weights released.",
    "source": "https://web.archive.org/web/20230102000459/https://openai.com/blog/chatgpt/",
    "status": "partial"
  },
  "architecture": {
    "family": "decoder_only",
    "note": "Stub specimen. OpenAI: 'fine-tuned from a model in the GPT-3.5 series', trained with RLHF, 'a sibling model to InstructGPT'. The model behind the ChatGPT product changed over time; which version produced the ShareGPT / UltraChat data is not_recorded.",
    "n_layers": {
      "value": null,
      "status": "not_recorded"
    },
    "hidden_size": {
      "value": null,
      "status": "not_recorded"
    },
    "n_heads": {
      "value": null,
      "status": "not_recorded"
    },
    "vocab_size": {
      "value": null,
      "status": "not_recorded"
    },
    "positional_encoding": {
      "value": null,
      "status": "not_recorded"
    }
  },
  "training_data": {
    "value": null,
    "source": null,
    "status": "not_recorded"
  },
  "techniques": [
    "rlhf"
  ],
  "primary_sources": [
    "https://web.archive.org/web/20230102000459/https://openai.com/blog/chatgpt/"
  ],
  "record_history": [
    {
      "date": "2026-09-24",
      "change": "created as a stub specimen to resolve vicuna/zephyr distilled_from_outputs edges",
      "by": "wilson-pruitt + claude"
    },
    {
      "date": "2026-09-24",
      "change": "availability checked and recorded",
      "by": "wilson-pruitt + claude"
    }
  ]
}