# List models

Discover the pinned model, aliases, configured price, and limits.

Use the pinned ID in the returned `data` array when validating a workflow. Aliases can move to another full release; the decision response always echoes the resolved pinned ID.

## GET /v1/models





```json
{
  "operationId": "models",
  "responses": {
    "200": {
      "description": "Pinned model, aliases and configured limits",
      "content": {
        "application/json": {
          "schema": {
            "type": "object",
            "required": [
              "data"
            ],
            "properties": {
              "data": {
                "type": "array",
                "items": {
                  "type": "object",
                  "required": [
                    "id",
                    "aliases",
                    "max_options",
                    "max_input_tokens",
                    "price_per_million_input_tokens_usd",
                    "release_date"
                  ],
                  "properties": {
                    "id": {
                      "type": "string",
                      "pattern": "^ren-(?:\\d+\\.\\d+\\.\\d+|latest|preview)$"
                    },
                    "aliases": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      }
                    },
                    "max_options": {
                      "type": "integer",
                      "const": 255
                    },
                    "max_input_tokens": {
                      "type": "integer",
                      "const": 2048
                    },
                    "price_per_million_input_tokens_usd": {
                      "type": "number",
                      "minimum": 0
                    },
                    "release_date": {
                      "type": "string",
                      "format": "date",
                      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
                      "description": "Release date of the resolved model (YYYY-MM-DD).",
                      "example": "2026-11-13"
                    }
                  }
                }
              }
            }
          }
        }
      },
      "headers": {
        "X-Request-Id": {
          "$ref": "#/components/headers/RequestId"
        }
      }
    },
    "401": {
      "description": "Invalid authentication",
      "content": {
        "application/json": {
          "schema": {
            "$ref": "#/components/schemas/Error"
          }
        }
      },
      "headers": {
        "X-Request-Id": {
          "$ref": "#/components/headers/RequestId"
        }
      }
    }
  },
  "security": [
    {
      "ApiKey": []
    }
  ]
}
```

## Referenced components

```json
{
  "securitySchemes": {
    "ApiKey": {
      "type": "http",
      "scheme": "bearer"
    },
    "Session": {
      "type": "http",
      "scheme": "bearer",
      "description": "Console session token (Better Auth) for an invited account with beta access."
    }
  },
  "schemas": {
    "Option": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "id"
      ],
      "properties": {
        "id": {
          "type": "string",
          "minLength": 1,
          "maxLength": 128
        },
        "description": {
          "type": "string"
        }
      }
    },
    "ChoiceRequest": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "model",
        "question",
        "type",
        "options"
      ],
      "properties": {
        "model": {
          "type": "string",
          "pattern": "^ren-(?:\\d+\\.\\d+\\.\\d+|latest|preview)$"
        },
        "situation": {
          "type": "string",
          "minLength": 1,
          "description": "Plain-text situation. Send exactly one of situation or state."
        },
        "state": {
          "description": "Structured situation as any non-null JSON value; a string must be nonblank. Send exactly one of situation or state.",
          "not": {
            "type": "null"
          }
        },
        "question": {
          "type": "string",
          "minLength": 1,
          "description": "The single question the model answers about the situation."
        },
        "type": {
          "const": "choice",
          "type": "string"
        },
        "options": {
          "type": "array",
          "minItems": 2,
          "maxItems": 255,
          "items": {
            "$ref": "#/components/schemas/Option"
          }
        },
        "threshold": {
          "type": "number",
          "minimum": 0,
          "maximum": 1,
          "description": "Routing threshold; defaults to 0.9 unless configured by the operator."
        }
      },
      "oneOf": [
        {
          "required": [
            "situation"
          ]
        },
        {
          "required": [
            "state"
          ]
        }
      ]
    },
    "ScoreRequest": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "model",
        "question",
        "type",
        "levels"
      ],
      "properties": {
        "model": {
          "type": "string",
          "pattern": "^ren-(?:\\d+\\.\\d+\\.\\d+|latest|preview)$"
        },
        "situation": {
          "type": "string",
          "minLength": 1,
          "description": "Plain-text situation. Send exactly one of situation or state."
        },
        "state": {
          "description": "Structured situation as any non-null JSON value; a string must be nonblank. Send exactly one of situation or state.",
          "not": {
            "type": "null"
          }
        },
        "question": {
          "type": "string",
          "minLength": 1,
          "description": "The single question the model answers about the situation."
        },
        "type": {
          "const": "score",
          "type": "string"
        },
        "levels": {
          "type": "array",
          "minItems": 2,
          "maxItems": 10,
          "items": {
            "$ref": "#/components/schemas/Option"
          }
        },
        "threshold": {
          "type": "number",
          "minimum": 0,
          "maximum": 1,
          "description": "Routing threshold; defaults to 0.9 unless configured by the operator."
        }
      },
      "description": "Levels have unique numeric string IDs from 1 through 10, ordered strictly increasingly. At least two levels are required by the engine.",
      "oneOf": [
        {
          "required": [
            "situation"
          ]
        },
        {
          "required": [
            "state"
          ]
        }
      ]
    },
    "DecideRequest": {
      "oneOf": [
        {
          "$ref": "#/components/schemas/ChoiceRequest"
        },
        {
          "$ref": "#/components/schemas/ScoreRequest"
        },
        {
          "$ref": "#/components/schemas/NoulRequest"
        }
      ]
    },
    "DecideResponse": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "id",
        "model",
        "choice",
        "probability",
        "probabilities",
        "action",
        "gate",
        "type",
        "threshold",
        "usage"
      ],
      "properties": {
        "id": {
          "type": "string"
        },
        "model": {
          "type": "string",
          "pattern": "^ren-\\d+\\.\\d+\\.\\d+$"
        },
        "choice": {
          "type": "string"
        },
        "probabilities": {
          "type": "object",
          "minProperties": 2,
          "maxProperties": 255,
          "additionalProperties": {
            "type": "number",
            "minimum": 0,
            "maximum": 1
          }
        },
        "action": {
          "type": "string",
          "enum": [
            "act",
            "ask_human"
          ]
        },
        "gate": {
          "type": "object",
          "additionalProperties": false,
          "required": [
            "threshold"
          ],
          "properties": {
            "threshold": {
              "type": "number",
              "minimum": 0,
              "maximum": 1
            }
          }
        },
        "type": {
          "type": "string",
          "enum": [
            "choice",
            "score",
            "noul"
          ]
        },
        "threshold": {
          "type": "number",
          "minimum": 0,
          "maximum": 1
        },
        "expected_score": {
          "type": "number",
          "minimum": 1,
          "maximum": 10
        },
        "probability": {
          "type": "number",
          "minimum": 0,
          "maximum": 1,
          "description": "Calibrated probability of the chosen option. The gate acts when probability >= threshold. For noul, the probability of true is probabilities.true."
        },
        "usage": {
          "$ref": "#/components/schemas/Usage"
        }
      }
    },
    "Error": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "code",
        "message"
      ],
      "properties": {
        "code": {
          "type": "string"
        },
        "message": {
          "type": "string"
        }
      }
    },
    "ApiKey": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "id",
        "name",
        "prefix",
        "created_at",
        "revoked_at"
      ],
      "properties": {
        "id": {
          "type": "string"
        },
        "name": {
          "type": "string",
          "minLength": 1,
          "maxLength": 80
        },
        "prefix": {
          "type": "string"
        },
        "created_at": {
          "type": "string"
        },
        "revoked_at": {
          "type": [
            "string",
            "null"
          ]
        },
        "creator_id": {
          "type": [
            "string",
            "null"
          ],
          "description": "Original key creator. Organization access survives removal of this member."
        },
        "creator_name": {
          "type": [
            "string",
            "null"
          ],
          "description": "Creator display name when available."
        }
      }
    },
    "CreatedKey": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "id",
        "name",
        "prefix",
        "created_at",
        "revoked_at",
        "key"
      ],
      "properties": {
        "id": {
          "type": "string"
        },
        "name": {
          "type": "string",
          "minLength": 1,
          "maxLength": 80
        },
        "prefix": {
          "type": "string"
        },
        "created_at": {
          "type": "string"
        },
        "revoked_at": {
          "type": [
            "string",
            "null"
          ]
        },
        "key": {
          "type": "string"
        },
        "creator_id": {
          "type": [
            "string",
            "null"
          ],
          "description": "Original key creator. Organization access survives removal of this member."
        },
        "creator_name": {
          "type": [
            "string",
            "null"
          ],
          "description": "Creator display name when available."
        }
      }
    },
    "CreateKeyRequest": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "name"
      ],
      "properties": {
        "name": {
          "type": "string",
          "minLength": 1,
          "maxLength": 80
        }
      }
    },
    "UsageRow": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "id",
        "key_id",
        "model",
        "status",
        "input_tokens",
        "latency_ms",
        "created_at",
        "output_tokens",
        "estimated_cost_usd"
      ],
      "properties": {
        "id": {
          "type": "string"
        },
        "key_id": {
          "type": "string"
        },
        "model": {
          "type": "string"
        },
        "status": {
          "type": "integer"
        },
        "input_tokens": {
          "type": "integer",
          "minimum": 0
        },
        "latency_ms": {
          "type": "integer",
          "minimum": 0
        },
        "created_at": {
          "type": "string"
        },
        "output_tokens": {
          "type": "integer",
          "const": 0
        },
        "estimated_cost_usd": {
          "type": "number",
          "minimum": 0
        }
      }
    },
    "NoulRequest": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "model",
        "question",
        "type"
      ],
      "properties": {
        "model": {
          "type": "string",
          "pattern": "^ren-(?:\\d+\\.\\d+\\.\\d+|latest|preview)$"
        },
        "situation": {
          "type": "string",
          "minLength": 1,
          "description": "Plain-text situation. Send exactly one of situation or state."
        },
        "state": {
          "description": "Structured situation as any non-null JSON value; a string must be nonblank. Send exactly one of situation or state.",
          "not": {
            "type": "null"
          }
        },
        "question": {
          "type": "string",
          "minLength": 1,
          "description": "The single question the model answers about the situation."
        },
        "type": {
          "const": "noul",
          "type": "string"
        },
        "threshold": {
          "type": "number",
          "minimum": 0,
          "maximum": 1,
          "description": "Routing threshold; defaults to 0.9 unless configured by the operator."
        }
      },
      "oneOf": [
        {
          "required": [
            "situation"
          ]
        },
        {
          "required": [
            "state"
          ]
        }
      ]
    },
    "Usage": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "input_tokens",
        "output_tokens",
        "model"
      ],
      "properties": {
        "input_tokens": {
          "type": "integer",
          "minimum": 1,
          "maximum": 2048
        },
        "output_tokens": {
          "type": "integer",
          "const": 0
        },
        "model": {
          "type": "string",
          "pattern": "^ren-\\d+\\.\\d+\\.\\d+$"
        }
      }
    },
    "UsageSummary": {
      "type": "object",
      "required": [
        "requests",
        "input_tokens",
        "estimated_cost_usd"
      ],
      "properties": {
        "requests": {
          "type": "integer",
          "minimum": 0
        },
        "input_tokens": {
          "type": "integer",
          "minimum": 0
        },
        "estimated_cost_usd": {
          "type": "number",
          "minimum": 0
        }
      }
    },
    "AccountUsage": {
      "type": "object",
      "required": [
        "usage",
        "summary",
        "by_key",
        "by_model",
        "daily",
        "limits",
        "price_per_million_input_tokens_usd"
      ],
      "properties": {
        "usage": {
          "type": "array",
          "items": {
            "$ref": "#/components/schemas/UsageRow"
          }
        },
        "summary": {
          "$ref": "#/components/schemas/UsageSummary"
        },
        "by_key": {
          "type": "array",
          "items": {
            "type": "object",
            "required": [
              "requests",
              "input_tokens",
              "estimated_cost_usd",
              "key_id"
            ],
            "properties": {
              "requests": {
                "type": "integer",
                "minimum": 0
              },
              "input_tokens": {
                "type": "integer",
                "minimum": 0
              },
              "estimated_cost_usd": {
                "type": "number",
                "minimum": 0
              },
              "key_id": {
                "type": "string"
              }
            }
          }
        },
        "by_model": {
          "type": "array",
          "items": {
            "type": "object",
            "required": [
              "requests",
              "input_tokens",
              "estimated_cost_usd",
              "model"
            ],
            "properties": {
              "requests": {
                "type": "integer",
                "minimum": 0
              },
              "input_tokens": {
                "type": "integer",
                "minimum": 0
              },
              "estimated_cost_usd": {
                "type": "number",
                "minimum": 0
              },
              "model": {
                "type": "string"
              }
            }
          }
        },
        "daily": {
          "type": "array",
          "items": {
            "type": "object",
            "required": [
              "requests",
              "input_tokens",
              "estimated_cost_usd",
              "day"
            ],
            "properties": {
              "requests": {
                "type": "integer",
                "minimum": 0
              },
              "input_tokens": {
                "type": "integer",
                "minimum": 0
              },
              "estimated_cost_usd": {
                "type": "number",
                "minimum": 0
              },
              "day": {
                "type": "string"
              }
            }
          }
        },
        "limits": {
          "type": "object",
          "required": [
            "per_key_requests_per_minute",
            "per_account_requests_per_minute"
          ],
          "properties": {
            "per_key_requests_per_minute": {
              "type": "integer"
            },
            "per_account_requests_per_minute": {
              "type": "integer"
            }
          }
        },
        "price_per_million_input_tokens_usd": {
          "type": "number",
          "minimum": 0
        }
      }
    },
    "ChoiceQuestion": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "question",
        "type",
        "options"
      ],
      "properties": {
        "question": {
          "type": "string",
          "minLength": 1,
          "description": "The single question the model answers about the situation."
        },
        "type": {
          "const": "choice",
          "type": "string"
        },
        "options": {
          "type": "array",
          "minItems": 2,
          "maxItems": 255,
          "items": {
            "$ref": "#/components/schemas/Option"
          }
        },
        "threshold": {
          "type": "number",
          "minimum": 0,
          "maximum": 1,
          "description": "Routing threshold; defaults to 0.9 unless configured by the operator."
        }
      }
    },
    "ScoreQuestion": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "question",
        "type",
        "levels"
      ],
      "properties": {
        "question": {
          "type": "string",
          "minLength": 1,
          "description": "The single question the model answers about the situation."
        },
        "type": {
          "const": "score",
          "type": "string"
        },
        "levels": {
          "type": "array",
          "minItems": 2,
          "maxItems": 10,
          "items": {
            "$ref": "#/components/schemas/Option"
          }
        },
        "threshold": {
          "type": "number",
          "minimum": 0,
          "maximum": 1,
          "description": "Routing threshold; defaults to 0.9 unless configured by the operator."
        }
      }
    },
    "NoulQuestion": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "question",
        "type"
      ],
      "properties": {
        "question": {
          "type": "string",
          "minLength": 1,
          "description": "The single question the model answers about the situation."
        },
        "type": {
          "const": "noul",
          "type": "string"
        },
        "threshold": {
          "type": "number",
          "minimum": 0,
          "maximum": 1,
          "description": "Routing threshold; defaults to 0.9 unless configured by the operator."
        }
      }
    },
    "Question": {
      "oneOf": [
        {
          "$ref": "#/components/schemas/ChoiceQuestion"
        },
        {
          "$ref": "#/components/schemas/ScoreQuestion"
        },
        {
          "$ref": "#/components/schemas/NoulQuestion"
        }
      ]
    },
    "MultiDecideRequest": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "model",
        "questions"
      ],
      "description": "Design only: not served. Behind the gateway flag MULTI_QUESTION_ENABLED (off); while off, a questions field is an unknown field (422). One situation or state shared by up to 64 named questions. The state is encoded and billed once; each question adds only its own text and options.",
      "properties": {
        "model": {
          "type": "string",
          "pattern": "^ren-(?:\\d+\\.\\d+\\.\\d+|latest|preview)$"
        },
        "situation": {
          "type": "string",
          "minLength": 1,
          "description": "Plain-text situation. Send exactly one of situation or state."
        },
        "state": {
          "description": "Structured situation as any non-null JSON value; a string must be nonblank. Send exactly one of situation or state.",
          "not": {
            "type": "null"
          }
        },
        "questions": {
          "type": "object",
          "minProperties": 1,
          "maxProperties": 64,
          "propertyNames": {
            "type": "string",
            "pattern": "^[A-Za-z0-9_-]{1,64}$"
          },
          "additionalProperties": {
            "$ref": "#/components/schemas/Question"
          }
        }
      },
      "oneOf": [
        {
          "required": [
            "situation"
          ]
        },
        {
          "required": [
            "state"
          ]
        }
      ]
    },
    "Answer": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "choice",
        "probability",
        "probabilities",
        "action",
        "gate",
        "type",
        "threshold"
      ],
      "properties": {
        "choice": {
          "type": "string"
        },
        "probabilities": {
          "type": "object",
          "minProperties": 2,
          "maxProperties": 255,
          "additionalProperties": {
            "type": "number",
            "minimum": 0,
            "maximum": 1
          }
        },
        "action": {
          "type": "string",
          "enum": [
            "act",
            "ask_human"
          ]
        },
        "gate": {
          "type": "object",
          "additionalProperties": false,
          "required": [
            "threshold"
          ],
          "properties": {
            "threshold": {
              "type": "number",
              "minimum": 0,
              "maximum": 1
            }
          }
        },
        "type": {
          "type": "string",
          "enum": [
            "choice",
            "score",
            "noul"
          ]
        },
        "threshold": {
          "type": "number",
          "minimum": 0,
          "maximum": 1
        },
        "expected_score": {
          "type": "number",
          "minimum": 1,
          "maximum": 10
        },
        "probability": {
          "type": "number",
          "minimum": 0,
          "maximum": 1,
          "description": "Calibrated probability of the chosen option. The gate acts when probability >= threshold. For noul, the probability of true is probabilities.true."
        }
      }
    },
    "MultiDecideResponse": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "id",
        "model",
        "answers",
        "usage"
      ],
      "description": "Design only: not served. Behind the gateway flag MULTI_QUESTION_ENABLED (off); while off, a questions field is an unknown field (422). Answers are keyed by question name; usage counts the shared state once.",
      "properties": {
        "id": {
          "type": "string"
        },
        "model": {
          "type": "string",
          "pattern": "^ren-\\d+\\.\\d+\\.\\d+$"
        },
        "answers": {
          "type": "object",
          "minProperties": 1,
          "maxProperties": 64,
          "propertyNames": {
            "type": "string",
            "pattern": "^[A-Za-z0-9_-]{1,64}$"
          },
          "additionalProperties": {
            "$ref": "#/components/schemas/Answer"
          }
        },
        "usage": {
          "type": "object",
          "additionalProperties": false,
          "required": [
            "input_tokens",
            "output_tokens",
            "model"
          ],
          "properties": {
            "input_tokens": {
              "type": "integer",
              "minimum": 1
            },
            "output_tokens": {
              "type": "integer",
              "const": 0
            },
            "model": {
              "type": "string",
              "pattern": "^ren-\\d+\\.\\d+\\.\\d+$"
            }
          },
          "description": "State counted once; each question adds its own text and options. Each question is limited to 2048 tokens with the state."
        }
      }
    }
  },
  "headers": {
    "RequestId": {
      "description": "Unique request ID; quote it when contacting support.",
      "schema": {
        "type": "string",
        "pattern": "^req_[0-9a-f]{32}$"
      }
    },
    "RetryAfter": {
      "description": "Whole seconds to wait before retrying.",
      "schema": {
        "type": "integer",
        "minimum": 1
      }
    },
    "RetryAfterMs": {
      "description": "Milliseconds to wait before retrying.",
      "schema": {
        "type": "integer",
        "minimum": 0
      }
    },
    "RateLimitLimit": {
      "description": "Requests allowed in the current one-minute window by the tightest limit (key or account).",
      "schema": {
        "type": "integer",
        "minimum": 1
      }
    },
    "RateLimitRemaining": {
      "description": "Requests left in the current window by the tightest limit.",
      "schema": {
        "type": "integer",
        "minimum": 0
      }
    },
    "RateLimitReset": {
      "description": "Seconds until the current window resets.",
      "schema": {
        "type": "integer",
        "minimum": 0
      }
    }
  }
}
```