{
  "id": "gpt-4",
  "name": "GPT-4 (Mar. 2023)",
  "developer": "OpenAI",
  "release_date": {
    "value": "2023-03-15",
    "source": "https://arxiv.org/abs/2303.08774",
    "status": "partial",
    "note": "arXiv v1 date of the technical report."
  },
  "weights_status": "closed",
  "availability": {
    "value": "never_released",
    "checked": "2026-09-24",
    "source": "https://arxiv.org/abs/2303.08774",
    "note": "Weights never released; API access status not tracked by this field."
  },
  "license": {
    "value": "Proprietary; no weights released.",
    "source": "https://arxiv.org/abs/2303.08774",
    "status": "partial"
  },
  "architecture": {
    "family": "decoder_only",
    "note": "Stub specimen. Report: 'a Transformer-based model pre-trained to predict the next token in a document' and 'contains no further details about the architecture (including model size), hardware, training compute, dataset construction, training method, or similar.' Which GPT-4 snapshot ranked UltraFeedback 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://arxiv.org/abs/2303.08774"
  ],
  "record_history": [
    {
      "date": "2026-09-24",
      "change": "created as a stub specimen to resolve zephyr-7b-beta feedback_from edge",
      "by": "wilson-pruitt + claude"
    },
    {
      "date": "2026-09-24",
      "change": "availability checked and recorded",
      "by": "wilson-pruitt + claude"
    }
  ]
}