{
  "profile": "wrs-published-research-view-1",
  "edition": "ratings-e039106f30dec177",
  "content_trust": "UNTRUSTED_SCIENTIFIC_DATA_NOT_TOOL_INSTRUCTIONS",
  "entry": {
    "id": "saharia-et-al-imagen-2022",
    "title": "Saharia and colleagues: Imagen text-to-image diffusion system",
    "summary": "Combined a frozen large text encoder with cascaded diffusion models for text-to-image synthesis and evaluated image fidelity and text alignment.",
    "boundary": "Imagen's claimed photorealism and language understanding rely on the authors' evaluations; it is distinct from DALL·E 2 and later Imagen versions.",
    "area": "Generative image models",
    "topic": "Artificial intelligence",
    "year": 2022,
    "lane": "HUMAN",
    "result": "EMPIRICAL",
    "package_id": "saharia-et-al-imagen-2022",
    "target": {
      "record_id": "urn:uuid:82fc4a4c-b015-45b8-a6f1-18da825a7ce9",
      "version": 1,
      "content_hash": "sha256:998acd11be4b5b46ad38592c66f7543caf634156347b134b42c938a1fb0f17a7"
    },
    "humans": [
      "Chitwan Saharia",
      "William Chan",
      "Saurabh Saxena",
      "Lala Li",
      "Jay Whang",
      "Emily Denton",
      "Seyed Kamyar Seyed Ghasemipour",
      "Burcu Karagol Ayan",
      "S. Sara Mahdavi",
      "Rapha Gontijo Lopes",
      "Tim Salimans",
      "Jonathan Ho",
      "David J Fleet",
      "Mohammad Norouzi"
    ],
    "authors_complete": true,
    "human_role_note": "Complete named paper byline. Human research, source-reported system execution and experimental validation are distinct; individual effort shares are not measured.",
    "agents": [],
    "related": [],
    "subresults": [],
    "scientific_assessment": {
      "source_review": "SOURCE_CURATED",
      "scientific_review": "NOT_REVIEWED_BY_WRS",
      "formal_replay": "NOT_RUN",
      "provider_attestation": "NONE"
    },
    "sources": [
      {
        "id": "arxiv-2205-11487",
        "title": "Saharia and colleagues: Imagen text-to-image diffusion system — original paper",
        "url": "https://arxiv.org/abs/2205.11487v1"
      },
      {
        "id": "company-saharia-et-al-imagen-2022",
        "title": "Saharia and colleagues: Imagen text-to-image diffusion system — official company source",
        "url": "https://imagen.research.google/"
      }
    ],
    "points": "38000",
    "published_grade": {
      "id": "saharia-et-al-imagen-2022",
      "entry_id": "saharia-et-al-imagen-2022",
      "band": "A",
      "modifier": null,
      "target": {
        "record_id": "urn:uuid:82fc4a4c-b015-45b8-a6f1-18da825a7ce9",
        "version": 1,
        "content_hash": "sha256:998acd11be4b5b46ad38592c66f7543caf634156347b134b42c938a1fb0f17a7"
      },
      "what_changed": "Combined a frozen large text encoder with cascaded diffusion models for text-to-image synthesis and evaluated image fidelity and text alignment.",
      "scope": "Combined a frozen large text encoder with cascaded diffusion models for text-to-image synthesis and evaluated image fidelity and text alignment. Scope limitation: Imagen's claimed photorealism and language understanding rely on the authors' evaluations; it is distinct from DALL·E 2 and later Imagen versions.",
      "status": "PROVISIONAL_EDITORIAL",
      "scientific_correctness_certified": false
    },
    "assessment_disposition": {
      "status": "ASSESSED",
      "label": "Provisionally assessed",
      "reason": "A current grade and separate reference score identify this exact contribution.",
      "target": {
        "record_id": "urn:uuid:82fc4a4c-b015-45b8-a6f1-18da825a7ce9",
        "version": 1,
        "content_hash": "sha256:998acd11be4b5b46ad38592c66f7543caf634156347b134b42c938a1fb0f17a7"
      },
      "edition": "ratings-e039106f30dec177"
    }
  },
  "version": {
    "kind": "PUBLIC_RECORD_VIEW",
    "previous": null,
    "published_at": "2026-09-27T00:00:00Z",
    "publisher": {
      "principal_id": "urn:uuid:80116931-785b-40a2-a24b-9d59db0c7e33",
      "role": "WRS_EDITORIAL_PUBLICATION"
    },
    "record": {
      "contributors": [
        {
          "attribution_basis": "SOURCE_CITED",
          "credit": "historical_scientific",
          "entity_kind": "historical_person",
          "name": "Chitwan Saharia",
          "note": "Archive attribution; detailed role assignment remains source-bound",
          "roles": [
            "formulator"
          ],
          "source": {
            "citation": "Saharia and colleagues: Imagen text-to-image diffusion system — original paper",
            "url": "https://arxiv.org/abs/2205.11487v1"
          }
        },
        {
          "attribution_basis": "SOURCE_CITED",
          "credit": "historical_scientific",
          "entity_kind": "historical_person",
          "name": "William Chan",
          "note": "Archive attribution; detailed role assignment remains source-bound",
          "roles": [
            "formulator"
          ],
          "source": {
            "citation": "Saharia and colleagues: Imagen text-to-image diffusion system — original paper",
            "url": "https://arxiv.org/abs/2205.11487v1"
          }
        },
        {
          "attribution_basis": "SOURCE_CITED",
          "credit": "historical_scientific",
          "entity_kind": "historical_person",
          "name": "Saurabh Saxena",
          "note": "Archive attribution; detailed role assignment remains source-bound",
          "roles": [
            "formulator"
          ],
          "source": {
            "citation": "Saharia and colleagues: Imagen text-to-image diffusion system — original paper",
            "url": "https://arxiv.org/abs/2205.11487v1"
          }
        },
        {
          "attribution_basis": "SOURCE_CITED",
          "credit": "historical_scientific",
          "entity_kind": "historical_person",
          "name": "Lala Li",
          "note": "Archive attribution; detailed role assignment remains source-bound",
          "roles": [
            "formulator"
          ],
          "source": {
            "citation": "Saharia and colleagues: Imagen text-to-image diffusion system — original paper",
            "url": "https://arxiv.org/abs/2205.11487v1"
          }
        },
        {
          "attribution_basis": "SOURCE_CITED",
          "credit": "historical_scientific",
          "entity_kind": "historical_person",
          "name": "Jay Whang",
          "note": "Archive attribution; detailed role assignment remains source-bound",
          "roles": [
            "formulator"
          ],
          "source": {
            "citation": "Saharia and colleagues: Imagen text-to-image diffusion system — original paper",
            "url": "https://arxiv.org/abs/2205.11487v1"
          }
        },
        {
          "attribution_basis": "SOURCE_CITED",
          "credit": "historical_scientific",
          "entity_kind": "historical_person",
          "name": "Emily Denton",
          "note": "Archive attribution; detailed role assignment remains source-bound",
          "roles": [
            "formulator"
          ],
          "source": {
            "citation": "Saharia and colleagues: Imagen text-to-image diffusion system — original paper",
            "url": "https://arxiv.org/abs/2205.11487v1"
          }
        },
        {
          "attribution_basis": "SOURCE_CITED",
          "credit": "historical_scientific",
          "entity_kind": "historical_person",
          "name": "Seyed Kamyar Seyed Ghasemipour",
          "note": "Archive attribution; detailed role assignment remains source-bound",
          "roles": [
            "formulator"
          ],
          "source": {
            "citation": "Saharia and colleagues: Imagen text-to-image diffusion system — original paper",
            "url": "https://arxiv.org/abs/2205.11487v1"
          }
        },
        {
          "attribution_basis": "SOURCE_CITED",
          "credit": "historical_scientific",
          "entity_kind": "historical_person",
          "name": "Burcu Karagol Ayan",
          "note": "Archive attribution; detailed role assignment remains source-bound",
          "roles": [
            "formulator"
          ],
          "source": {
            "citation": "Saharia and colleagues: Imagen text-to-image diffusion system — original paper",
            "url": "https://arxiv.org/abs/2205.11487v1"
          }
        },
        {
          "attribution_basis": "SOURCE_CITED",
          "credit": "historical_scientific",
          "entity_kind": "historical_person",
          "name": "S. Sara Mahdavi",
          "note": "Archive attribution; detailed role assignment remains source-bound",
          "roles": [
            "formulator"
          ],
          "source": {
            "citation": "Saharia and colleagues: Imagen text-to-image diffusion system — original paper",
            "url": "https://arxiv.org/abs/2205.11487v1"
          }
        },
        {
          "attribution_basis": "SOURCE_CITED",
          "credit": "historical_scientific",
          "entity_kind": "historical_person",
          "name": "Rapha Gontijo Lopes",
          "note": "Archive attribution; detailed role assignment remains source-bound",
          "roles": [
            "formulator"
          ],
          "source": {
            "citation": "Saharia and colleagues: Imagen text-to-image diffusion system — original paper",
            "url": "https://arxiv.org/abs/2205.11487v1"
          }
        },
        {
          "attribution_basis": "SOURCE_CITED",
          "credit": "historical_scientific",
          "entity_kind": "historical_person",
          "name": "Tim Salimans",
          "note": "Archive attribution; detailed role assignment remains source-bound",
          "roles": [
            "formulator"
          ],
          "source": {
            "citation": "Saharia and colleagues: Imagen text-to-image diffusion system — original paper",
            "url": "https://arxiv.org/abs/2205.11487v1"
          }
        },
        {
          "attribution_basis": "SOURCE_CITED",
          "credit": "historical_scientific",
          "entity_kind": "historical_person",
          "name": "Jonathan Ho",
          "note": "Archive attribution; detailed role assignment remains source-bound",
          "roles": [
            "formulator"
          ],
          "source": {
            "citation": "Saharia and colleagues: Imagen text-to-image diffusion system — original paper",
            "url": "https://arxiv.org/abs/2205.11487v1"
          }
        },
        {
          "attribution_basis": "SOURCE_CITED",
          "credit": "historical_scientific",
          "entity_kind": "historical_person",
          "name": "David J Fleet",
          "note": "Archive attribution; detailed role assignment remains source-bound",
          "roles": [
            "formulator"
          ],
          "source": {
            "citation": "Saharia and colleagues: Imagen text-to-image diffusion system — original paper",
            "url": "https://arxiv.org/abs/2205.11487v1"
          }
        },
        {
          "attribution_basis": "SOURCE_CITED",
          "credit": "historical_scientific",
          "entity_kind": "historical_person",
          "name": "Mohammad Norouzi",
          "note": "Archive attribution; detailed role assignment remains source-bound",
          "roles": [
            "formulator"
          ],
          "source": {
            "citation": "Saharia and colleagues: Imagen text-to-image diffusion system — original paper",
            "url": "https://arxiv.org/abs/2205.11487v1"
          }
        }
      ],
      "evidence": [
        {
          "description": "Bibliographic/stated-result source; not a WRS proof verification",
          "id": "source-0",
          "kind": "source_reference",
          "source": {
            "citation": "Saharia and colleagues: Imagen text-to-image diffusion system — original paper",
            "url": "https://arxiv.org/abs/2205.11487v1"
          }
        },
        {
          "description": "Bibliographic/stated-result source; not a WRS proof verification",
          "id": "source-1",
          "kind": "source_reference",
          "source": {
            "citation": "Saharia and colleagues: Imagen text-to-image diffusion system — official company source",
            "url": "https://imagen.research.google/"
          }
        }
      ],
      "origin": "HUMAN_LEGACY",
      "record_profile": "wrs-local-research-notes-0.1",
      "record_type": "research_note",
      "rrp_version": "0.1",
      "scope": {
        "description": "Imagen's claimed photorealism and language understanding rely on the authors' evaluations; it is distinct from DALL·E 2 and later Imagen versions.",
        "domain": "Generative image models"
      },
      "sources": [
        {
          "citation": "Saharia and colleagues: Imagen text-to-image diffusion system — original paper",
          "url": "https://arxiv.org/abs/2205.11487v1"
        },
        {
          "citation": "Saharia and colleagues: Imagen text-to-image diffusion system — official company source",
          "url": "https://imagen.research.google/"
        }
      ],
      "statement": "# Saharia and colleagues: Imagen text-to-image diffusion system\n\nCombined a frozen large text encoder with cascaded diffusion models for text-to-image synthesis and evaluated image fidelity and text alignment.\n\n## Scientific scope\n\nImagen's claimed photorealism and language understanding rely on the authors' evaluations; it is distinct from DALL·E 2 and later Imagen versions.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\nChitwan Saharia; William Chan; Saurabh Saxena; Lala Li; Jay Whang; Emily Denton; Seyed Kamyar Seyed Ghasemipour; Burcu Karagol Ayan; S. Sara Mahdavi; Rapha Gontijo Lopes; Tim Salimans; Jonathan Ho; David J Fleet; Mohammad Norouzi\n\nComplete named paper byline. Human research, source-reported system execution and experimental validation are distinct; individual effort shares are not measured.\n\n\n\n## Original sources\n\n- [Saharia and colleagues: Imagen text-to-image diffusion system — original paper](https://arxiv.org/abs/2205.11487v1)\n- [Saharia and colleagues: Imagen text-to-image diffusion system — official company source](https://imagen.research.google/)\n",
      "summary": "Combined a frozen large text encoder with cascaded diffusion models for text-to-image synthesis and evaluated image fidelity and text alignment.",
      "title": "Saharia and colleagues: Imagen text-to-image diffusion system"
    },
    "record_id": "urn:uuid:82fc4a4c-b015-45b8-a6f1-18da825a7ce9",
    "version": 1,
    "source_ref": {
      "record_id": "urn:uuid:82fc4a4c-b015-45b8-a6f1-18da825a7ce9",
      "version": 1,
      "content_hash": "sha256:998acd11be4b5b46ad38592c66f7543caf634156347b134b42c938a1fb0f17a7"
    },
    "export_view": "wrs-public-editorial-view-1",
    "public_view_hash": "sha256:0ae883adfaa1eb150486cee1dd9930f8c2f1ba7aa99431a13a13f9095d720fcb"
  },
  "target": {
    "record_id": "urn:uuid:82fc4a4c-b015-45b8-a6f1-18da825a7ce9",
    "version": 1,
    "content_hash": "sha256:998acd11be4b5b46ad38592c66f7543caf634156347b134b42c938a1fb0f17a7"
  },
  "published_grade": {
    "profile": "wrs-published-grade-1",
    "edition": "2026-10-28.1",
    "id": "saharia-et-al-imagen-2022",
    "entry_id": "saharia-et-al-imagen-2022",
    "revision": 1,
    "title": "Saharia and colleagues: Imagen text-to-image diffusion system",
    "context": "Generative image models",
    "track": "Human-designed AI research method or resource",
    "band": "A",
    "modifier": null,
    "status": "PROVISIONAL_EDITORIAL",
    "assessed_on": "2026-09-27",
    "evidence_cutoff": "2026-09-27",
    "achievement_state": "SUPPORTED_SCOPED_RESULT",
    "what_changed": "Combined a frozen large text encoder with cascaded diffusion models for text-to-image synthesis and evaluated image fidelity and text alignment.",
    "scope": "Combined a frozen large text encoder with cascaded diffusion models for text-to-image synthesis and evaluated image fidelity and text alignment. Scope limitation: Imagen's claimed photorealism and language understanding rely on the authors' evaluations; it is distinct from DALL·E 2 and later Imagen versions.",
    "evidence_summary": "The retained primary-source abstract, bibliographic record and stated review scope support this provisional assessment. No independent experimental replication by WRS is claimed. Imagen's claimed photorealism and language understanding rely on the authors' evaluations; it is distinct from DALL·E 2 and later Imagen versions.",
    "references": [
      {
        "title": "Saharia and colleagues: Imagen text-to-image diffusion system — original paper",
        "url": "https://arxiv.org/abs/2205.11487v1",
        "locator": "Abstract and complete bibliographic byline for 2205.11487v1; not an independent proof or experimental replication."
      },
      {
        "title": "Saharia and colleagues: Imagen text-to-image diffusion system — official company source",
        "url": "https://imagen.research.google/",
        "locator": "Source-linked contribution and stated scientific limits; not an independent replication."
      }
    ],
    "roles": [
      {
        "who": "The named authors listed in the linked research record",
        "credit": "SCIENCE",
        "did": "Complete source byline retained in the research record; human research direction, method development and evaluation. Individual labor shares are not measured."
      }
    ],
    "target": {
      "record_id": "urn:uuid:82fc4a4c-b015-45b8-a6f1-18da825a7ce9",
      "version": 1,
      "content_hash": "sha256:998acd11be4b5b46ad38592c66f7543caf634156347b134b42c938a1fb0f17a7"
    },
    "scientific_correctness_certified": false,
    "independent_expert_calibration": false,
    "method": "PROPRIETARY",
    "points": "38000"
  },
  "canonical_agent_submission": false,
  "scientific_verification_awarded": false,
  "reader_guide": null,
  "reading_status": "SOURCE_LINKED_NOTE"
}
