LMArena Text-to-Image Model Leaderboard

{
  "type": "object",
  "properties": {},
  "additionalProperties": false
}

{
  "type": "object",
  "properties": {
    "data": {
      "type": "object",
      "properties": {
        "entries": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "rank": {
                "type": "number",
                "description": "The model's current leaderboard position."
              },
              "votes": {
                "type": "number",
                "description": "Number of head-to-head votes backing this rating."
              },
              "rating": {
                "type": "number",
                "description": "Elo-style leaderboard rating."
              },
              "license": {
                "type": "string",
                "description": "e.g. 'Proprietary', 'MIT', 'OpenMDW-1.1', or 'Open', as observed across the real call's 28 entries."
              },
              "modelKey": {
                "type": "string",
                "description": "The provider's internal identifier for this model version."
              },
              "modelUrl": {
                "type": "null",
                "description": "Always null in the shaped output. The raw field is a URL to the model's own announcement/product page (a census-recorded URL leaf); it is stripped rather than passed through, per this build's rule that a URL leaf carries strip: true or is omitted."
              },
              "rankLower": {
                "type": "number",
                "description": "Worst-case rank within the statistical confidence interval."
              },
              "rankUpper": {
                "type": "number",
                "description": "Best-case rank within the statistical confidence interval."
              },
              "ratingLower": {
                "type": "number",
                "description": "Lower bound of the rating's confidence interval."
              },
              "ratingUpper": {
                "type": "number",
                "description": "Upper bound of the rating's confidence interval."
              },
              "releaseType": {
                "type": [
                  "string",
                  "null"
                ],
                "description": "e.g. 'co_release' for a jointly-announced release. Observed both populated and null across real entries -- not always present."
              },
              "contextLength": {
                "type": [
                  "number",
                  "null"
                ],
                "description": "Maximum context window in tokens. Observed both populated (e.g. 131072) and null across real entries -- not always present."
              },
              "pricePerImage": {
                "type": [
                  "number",
                  "null"
                ],
                "description": "USD per generated image. Observed both populated (including 0) and null across real entries -- not always present."
              },
              "pricePerSecond": {
                "type": [
                  "number",
                  "null"
                ],
                "description": "USD per second of generated media, for video-capable models. Only null was observed on the real call's 28 entries -- unconfirmed populated on this endpoint, kept nullable rather than assumed absent."
              },
              "modelDisplayName": {
                "type": "string",
                "description": "The model's public display name, e.g. 'gpt-image-2.5-sunburst'."
              },
              "modelOrganization": {
                "type": "string",
                "description": "The organization that publishes this model, e.g. 'OpenAI'."
              },
              "inputPricePerMillion": {
                "type": [
                  "number",
                  "null"
                ],
                "description": "USD per million input tokens. Observed both populated and null across real entries -- not always present."
              },
              "outputPricePerMillion": {
                "type": [
                  "number",
                  "null"
                ],
                "description": "USD per million output tokens. Observed both populated and null across real entries -- not always present."
              }
            },
            "additionalProperties": false
          },
          "description": "Every ranked model on the text-to-image leaderboard, in rank order."
        }
      },
      "additionalProperties": false
    },
    "status": {
      "type": "string",
      "description": "'success' on the real call observed."
    }
  },
  "description": "The leaderboard result, as returned at routing.responseResultPath ($.output).",
  "additionalProperties": false
}