Opik Experiments API

openapi: 3.1.0
info:
  title: Opik REST Experiments API
  description: "The Opik REST API is currently in beta and subject to change. If you have any questions or feedback about the APIs, please reach out on GitHub: https://github.com/comet-ml/opik.\n\nAll of the methods listed in this documentation are used by either the SDK or the UI to interact with the Opik server. As a result,\nthe methods have been optimized for these use-cases in mind. If you are looking for a method that is not listed above, please create\nand issue on GitHub or raise a PR!\n\nOpik includes two main deployment options that results in slightly different API usage:\n\n- **Self-hosted Opik instance:** You will simply need to specify the URL as `http://localhost:5173/api/<endpoint_path>` or similar. This is the default option for the docs.\n- **Opik Cloud:** You will need to specify the Opik API Key and Opik Workspace in the header. The format of the header should be:\n\n  ```\n  {\n    \"Comet-Workspace\": \"your-workspace-name\",\n    \"authorization\": \"your-api-key\"\n  }\n  ```\n\n  The full payload would therefore look like:\n  \n  ```\n  curl -X GET 'https://www.comet.com/opik/api/v1/private/projects' \\\n  -H 'Accept: application/json' \\\n  -H 'Comet-Workspace: <your-workspace-name>' \\\n  -H 'authorization: <your-api-key>'\n  ```\n\n  Do take note here that the authorization header value does not include the `Bearer ` prefix. To switch to using the Opik Cloud in the documentation, you can\n  click on the edit button displayed when hovering over the `Base URL` displayed on the right hand side of the docs.\n"
  contact:
    name: Github Repository
    url: https://github.com/comet-ml/opik
  license:
    name: Apache 2.0
    url: http://www.apache.org/licenses/LICENSE-2.0.html
  version: 1.0.0
servers:
- url: http://localhost:5173/api
  description: Local server
- url: https://www.comet.com/opik/api
  description: Opik Cloud
tags:
- name: Experiments
  description: Experiment resources
paths:
  /v1/private/experiments/batch:
    patch:
      tags:
      - Experiments
      summary: Batch update experiments
      description: Update multiple experiments
      operationId: batchUpdateExperiments
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ExperimentBatchUpdate'
      responses:
        '204':
          description: No Content
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorMessage'
  /v1/private/experiments:
    get:
      tags:
      - Experiments
      summary: Find experiments
      description: Find experiments
      operationId: findExperiments
      parameters:
      - name: page
        in: query
        schema:
          minimum: 1
          type: integer
          format: int32
          default: 1
      - name: size
        in: query
        schema:
          minimum: 1
          type: integer
          format: int32
          default: 10
      - name: datasetId
        in: query
        schema:
          type: string
          format: uuid
      - name: optimization_id
        in: query
        schema:
          type: string
          format: uuid
      - name: types
        in: query
        schema:
          type: string
      - name: name
        in: query
        schema:
          type: string
          description: Filter experiments by name (partial match, case insensitive)
      - name: dataset_deleted
        in: query
        schema:
          type: boolean
      - name: prompt_id
        in: query
        schema:
          type: string
          format: uuid
      - name: project_id
        in: query
        schema:
          type: string
          format: uuid
      - name: project_deleted
        in: query
        schema:
          type: boolean
      - name: sorting
        in: query
        schema:
          type: string
      - name: filters
        in: query
        schema:
          type: string
      - name: experiment_ids
        in: query
        schema:
          type: string
          description: Filter experiments by a list of experiment IDs
      - name: force_sorting
        in: query
        schema:
          type: boolean
          description: Force sorting even when exceeding the endpoint result set limit. May result in slower queries
          default: false
      responses:
        '200':
          description: Experiments resource
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ExperimentPage_Public'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorMessage_Public'
    post:
      tags:
      - Experiments
      summary: Create experiment
      description: Create experiment
      operationId: createExperiment
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Experiment_Write'
      responses:
        '201':
          description: Created
          headers:
            Location:
              required: true
              style: simple
              schema:
                type: string
              example: ${basePath}/v1/private/experiments/{id}
  /v1/private/experiments/items:
    post:
      tags:
      - Experiments
      summary: Create experiment items
      description: Create experiment items
      operationId: createExperimentItems
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ExperimentItemsBatch'
      responses:
        '204':
          description: No content
  /v1/private/experiments/items/delete:
    post:
      tags:
      - Experiments
      summary: Delete experiment items
      description: Delete experiment items
      operationId: deleteExperimentItems
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ExperimentItemsDelete'
      responses:
        '204':
          description: No content
  /v1/private/experiments/delete:
    post:
      tags:
      - Experiments
      summary: Delete experiments by id
      description: Delete experiments by id
      operationId: deleteExperimentsById
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/DeleteIdsHolder'
      responses:
        '204':
          description: No content
  /v1/private/experiments/execute:
    post:
      tags:
      - Experiments
      summary: Create and execute experiment
      description: Creates experiments for each prompt variant and asynchronously processes all dataset items
      operationId: executeExperiment
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ExperimentExecutionRequest'
        required: true
      responses:
        '202':
          description: Experiments created and processing started
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ExperimentExecutionResponse'
  /v1/private/experiments/items/bulk:
    put:
      tags:
      - Experiments
      summary: Record experiment items in bulk
      description: Record experiment items in bulk with traces, spans, and feedback scores. Maximum request size is 4MB.
      operationId: experimentItemsBulk
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ExperimentItemBulkUpload_ExperimentItemBulkWriteView'
      responses:
        '204':
          description: No content
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorMessage'
        '409':
          description: Conflict
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorMessage'
        '422':
          description: Unprocessable Content
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorMessage'
  /v1/private/experiments/feedback-scores/names:
    get:
      tags:
      - Experiments
      summary: Find Feedback Score names
      description: Find Feedback Score names
      operationId: findFeedbackScoreNames
      parameters:
      - name: experiment_ids
        in: query
        schema:
          type: string
      - name: project_id
        in: query
        schema:
          type: string
          format: uuid
      responses:
        '200':
          description: Feedback Scores resource
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FeedbackScoreNames_Public'
  /v1/private/experiments/groups:
    get:
      tags:
      - Experiments
      summary: Find experiment groups
      description: Find experiments grouped by specified fields
      operationId: findExperimentGroups
      parameters:
      - name: groups
        in: query
        schema:
          type: string
      - name: types
        in: query
        schema:
          type: string
      - name: name
        in: query
        schema:
          type: string
          description: Filter experiments by name (partial match, case insensitive)
      - name: project_id
        in: query
        schema:
          type: string
          format: uuid
      - name: project_deleted
        in: query
        schema:
          type: boolean
      - name: filters
        in: query
        schema:
          type: string
      responses:
        '200':
          description: Experiment groups
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ExperimentGroupResponse'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorMessage'
  /v1/private/experiments/groups/aggregations:
    get:
      tags:
      - Experiments
      summary: Find experiment groups with aggregations
      description: Find experiments grouped by specified fields with aggregation metrics
      operationId: findExperimentGroupsAggregations
      parameters:
      - name: groups
        in: query
        schema:
          type: string
      - name: types
        in: query
        schema:
          type: string
      - name: name
        in: query
        schema:
          type: string
          description: Filter experiments by name (partial match, case insensitive)
      - name: project_id
        in: query
        schema:
          type: string
          format: uuid
      - name: project_deleted
        in: query
        schema:
          type: boolean
          description: Filter experiments by deleted projects
      - name: filters
        in: query
        schema:
          type: string
      responses:
        '200':
          description: Experiment groups with aggregations
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ExperimentGroupAggregationsResponse'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorMessage'
  /v1/private/experiments/finish:
    post:
      tags:
      - Experiments
      summary: Finish experiments
      description: Finish experiments and trigger alert events
      operationId: finishExperiments
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/DeleteIdsHolder'
      responses:
        '204':
          description: No content
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorMessage'
  /v1/private/experiments/{id}:
    get:
      tags:
      - Experiments
      summary: Get experiment by id
      description: Get experiment by id
      operationId: getExperimentById
      parameters:
      - name: id
        in: path
        required: true
        schema:
          type: string
          format: uuid
      responses:
        '200':
          description: Experiment resource
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Experiment_Public'
        '404':
          description: Not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorMessage_Public'
    patch:
      tags:
      - Experiments
      summary: Update experiment by id
      description: Update experiment by id
      operationId: updateExperiment
      parameters:
      - name: id
        in: path
        required: true
        schema:
          type: string
          format: uuid
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ExperimentUpdate'
      responses:
        '204':
          description: No Content
        '404':
          description: Not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorMessage'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorMessage'
  /v1/private/experiments/items/{id}:
    get:
      tags:
      - Experiments
      summary: Get experiment item by id
      description: Get experiment item by id
      operationId: getExperimentItemById
      parameters:
      - name: id
        in: path
        required: true
        schema:
          type: string
          format: uuid
      responses:
        '200':
          description: Experiment item resource
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ExperimentItem_Public'
        '404':
          description: Not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorMessage_Public'
  /v1/private/experiments/items/stream:
    post:
      tags:
      - Experiments
      summary: Stream experiment items
      description: Stream experiment items
      operationId: streamExperimentItems
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ExperimentItemStreamRequest'
      responses:
        '200':
          description: Experiment items stream or error during process
          content:
            application/octet-stream:
              schema:
                maxItems: 2000
                type: array
                items:
                  type: string
                  anyOf:
                  - $ref: '#/components/schemas/ExperimentItem'
                  - $ref: '#/components/schemas/ErrorMessage'
  /v1/private/experiments/stream:
    post:
      tags:
      - Experiments
      summary: Stream experiments
      description: Stream experiments
      operationId: streamExperiments
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ExperimentStreamRequest_Public'
      responses:
        '200':
          description: Experiments stream or error during process
          content:
            application/octet-stream:
              schema:
                maxItems: 2000
                type: array
                items:
                  type: string
                  anyOf:
                  - $ref: '#/components/schemas/Experiment_Public'
                  - $ref: '#/components/schemas/ErrorMessage_Public'
components:
  schemas:
    ErrorMessage_Public:
      type: object
      properties:
        code:
          type: integer
          format: int32
        message:
          type: string
        details:
          type: string
    ExperimentScore_Public:
      required:
      - name
      - value
      type: object
      properties:
        name:
          minLength: 1
          type: string
        value:
          type: number
    GroupDetails:
      type: object
      properties:
        groups_details:
          type: array
          items:
            $ref: '#/components/schemas/GroupDetail'
    GroupContentWithAggregations:
      type: object
      properties:
        label:
          type: string
        aggregations:
          $ref: '#/components/schemas/AggregationData'
    ExperimentGroupAggregationsResponse:
      type: object
      properties:
        content:
          type: object
          additionalProperties:
            $ref: '#/components/schemas/GroupContentWithAggregations'
    AggregationData:
      type: object
      properties:
        experiment_count:
          type: integer
          format: int64
        trace_count:
          type: integer
          format: int64
        total_estimated_cost:
          type: number
        total_estimated_cost_avg:
          type: number
        duration:
          $ref: '#/components/schemas/PercentageValues'
        feedback_scores:
          type: array
          items:
            $ref: '#/components/schemas/FeedbackScoreAverage'
        experiment_scores:
          type: array
          items:
            $ref: '#/components/schemas/FeedbackScoreAverage'
        pass_rate_avg:
          type: number
        passed_count_sum:
          type: integer
          format: int64
        total_count_sum:
          type: integer
          format: int64
    Comment_Public:
      required:
      - text
      type: object
      properties:
        id:
          type: string
          format: uuid
          readOnly: true
        text:
          minLength: 1
          type: string
        created_at:
          type: string
          format: date-time
          readOnly: true
        last_updated_at:
          type: string
          format: date-time
          readOnly: true
        created_by:
          type: string
          readOnly: true
        last_updated_by:
          type: string
          readOnly: true
      readOnly: true
    DeleteIdsHolder:
      required:
      - ids
      type: object
      properties:
        ids:
          maxItems: 1000
          minItems: 1
          uniqueItems: true
          type: array
          items:
            type: string
            format: uuid
    JsonNode:
      type: object
    ValueEntry:
      type: object
      properties:
        value:
          type: number
        reason:
          type: string
        category_name:
          type: string
        source:
          type: string
          enum:
          - ui
          - sdk
          - online_scoring
        last_updated_at:
          type: string
          format: date-time
        span_type:
          type: string
        span_id:
          type: string
      readOnly: true
    ValueEntry_ExperimentItemBulkWriteView:
      type: object
      properties:
        value:
          type: number
        reason:
          type: string
        category_name:
          type: string
        source:
          type: string
          enum:
          - ui
          - sdk
          - online_scoring
        last_updated_at:
          type: string
          format: date-time
        span_type:
          type: string
        span_id:
          type: string
      readOnly: true
    AssertionScoreAverage_Public:
      required:
      - name
      - value
      type: object
      properties:
        name:
          minLength: 1
          type: string
        value:
          type: number
      description: Per-assertion average pass rates for test suite experiments. Null for regular experiments.
      readOnly: true
    ErrorMessage:
      type: object
      properties:
        code:
          type: integer
          format: int32
        message:
          type: string
        details:
          type: string
    Message:
      required:
      - content
      - role
      type: object
      properties:
        role:
          minLength: 1
          type: string
        content:
          $ref: '#/components/schemas/JsonNode'
    ExperimentItemsDelete:
      required:
      - ids
      type: object
      properties:
        ids:
          maxItems: 1000
          minItems: 1
          uniqueItems: true
          type: array
          items:
            type: string
            format: uuid
    JsonListString_ExperimentItemBulkWriteView:
      type: object
      anyOf:
      - type: object
      - type: array
        items:
          type: object
      - type: string
    DatasetVersionSummary_Public:
      type: object
      properties:
        id:
          type: string
          description: Unique identifier of the version
          format: uuid
        version_hash:
          type: string
          description: Hash of the version content
        version_name:
          type: string
          description: Sequential version name formatted as 'v1', 'v2', etc.
        change_description:
          type: string
          description: Description of changes in this version
        tags:
          uniqueItems: true
          type: array
          description: Tags associated with this version
          items:
            type: string
            description: Tags associated with this version
      description: Summary of the latest dataset version
      readOnly: true
    ExperimentItemBulkUpload_ExperimentItemBulkWriteView:
      required:
      - dataset_name
      - experiment_name
      - items
      type: object
      properties:
        experiment_name:
          minLength: 1
          type: string
        dataset_name:
          minLength: 1
          type: string
        experiment_id:
          type: string
          description: Optional experiment ID. If provided, items will be added to the existing experiment and experimentName will be ignored. If not provided or experiment with that ID doesn't exist, a new experiment will be created with the given experimentName
          format: uuid
        project_name:
          pattern: (?s)^\s*(\S.*\S|\S)\s*$
          type: string
          description: Project for traces auto-created from items that provide evaluate_task_result (i.e. without an explicit trace). If null, the default project is used; relying on this fallback is deprecated, please provide project_name explicitly.
        items:
          maxItems: 1000
          minItems: 1
          type: array
          items:
            $ref: '#/components/schemas/ExperimentItemBulkRecord_ExperimentItemBulkWriteView'
    ErrorInfo_ExperimentItemBulkWriteView:
      required:
      - exception_type
      - traceback
      type: object
      properties:
        exception_type:
          minLength: 1
          type: string
        message:
          type: string
        traceback:
          minLength: 1
          type: string
    JsonListString:
      type: object
      anyOf:
      - type: object
      - type: array
        items:
          type: object
      - type: string
    Experiment_Write:
      required:
      - dataset_name
      type: object
      properties:
        id:
          type: string
          format: uuid
        dataset_name:
          minLength: 1
          type: string
          nullable: true
        project_id:
          type: string
          description: Project ID. Takes precedence over project_name when both are provided.
          format: uuid
        project_name:
          pattern: (?s)^\s*(\S.*\S|\S)\s*$
          type: string
          description: Project name. Creates project if it doesn't exist. Ignored when project_id is provided.
        name:
          type: string
        metadata:
          $ref: '#/components/schemas/JsonListString_Write'
        tags:
          maxItems: 50
          minItems: 0
          uniqueItems: true
          type: array
          items:
            maxLength: 100
            minLength: 0
            type: string
        type:
          type: string
          enum:
          - regular
          - trial
          - mini-batch
          - mutation
        evaluation_method:
          type: string
          enum:
          - dataset
          - evaluation_suite
        optimization_id:
          type: string
          format: uuid
        status:
          type: string
          enum:
          - running
          - completed
          - cancelled
        experiment_scores:
          type: array
          items:
            $ref: '#/components/schemas/ExperimentScore_Write'
        prompt_version:
          $ref: '#/components/schemas/PromptVersionLink_Write'
        prompt_versions:
          type: array
          items:
            $ref: '#/components/schemas/PromptVersionLink_Write'
        dataset_version_id:
          type: string
          description: ID of the dataset version this experiment is linked to. If not provided at creation, experiment will be automatically linked to the latest version.
          format: uuid
    JsonListString_Public:
      type: object
      anyOf:
      - type: object
      - type: array
        items:
          type: object
      - type: string
    ExperimentScore_Write:
      required:
      - name
      - value
      type: object
      properties:
        name:
          minLength: 1
          type: string
        value:
          type: number
    ExperimentStreamRequest_Public:
      required:
      - name
      type: object
      properties:
        name:
          minLength: 1
          type: string
        limit:
          maximum: 2000
          minimum: 1
          type: integer
          format: int32
        last_retrieved_id:
          type: string
          format: uuid
        project_name:
          pattern: (?s)^\s*(\S.*\S|\S)\s*$
          type: string
    GroupDetail:
      type: object
      properties:
        group_sorting:
          type: array
          items:
            type: string
    ExecutionPolicy:
      type: object
      properties:
        runs_per_item:
          maximum: 100
          minimum: 1
          type: integer
          format: int32
        pass_threshold:
          maximum: 100
          minimum: 1
          type: integer
          format: int32
      readOnly: true
    PromptVersionLink:
      required:
      - id
      type: object
      properties:
        id:
          type: string
          format: uuid
        commit:
          type: string
          readOnly: true
        version_number:
          type: string
          description: sequential version number in the format v<N>; null for masks
          readOnly: true
        prompt_id:
          type: string
          format: uuid
          readOnly: true
        prompt_name:
          type: string
          readOnly: true
    PromptVersionLink_Public:
      type: object
      properties:
        prompt_version_id:
          type: string
          format: uuid
        commit:
          type: string
        prompt_id:
          type: string
          format: uuid
        prompt_name:
          type: string
    ExperimentItemsBatch:
      required:
      - experiment_items
      type: object
      properties:
        experiment_items:
          maxItems: 1000
          minItems: 1
          uniqueItems: true
          type: array
          items:
            $ref: '#/components/schemas/ExperimentItem'
    Experiment_Public:
      required:
      - dataset_name
      type: object
      properties:
        id:
          type: string
          format: uuid
        dataset_name:
          minLength: 1
          type: string
          nullable: true
        dataset_id:
          type: string
          format: uuid
          readOnly: true
        project_id:
          type: string
          description: Project ID. Takes precedence over project_name when both are provided.
          format: uuid
        project_name:
          pattern: (?s)^\s*(\S.*\S|\S)\s*$
          type: string
          description: Project name. Creates project if it doesn't exist. Ignored when project_id is provided.
        name:
          type: string
        metadata:
          $ref: '#/components/schemas/JsonListString_Public'
        tags:
          maxItems: 50
          minItems: 0
          uniqueItems: true
          type: array
          items:
            maxLength: 100
            minLength: 0
            type: string
        type:
          type: string
          enum:
          - regular
          - trial
          - mini-batch
          - mutation
        evaluation_method:
          type: string
          enum:
          - dataset
          - evaluation_suite
        optimization_id:
          type: string
          format: uuid
        feedback_scores:
          type: array
          readOnly: true
          items:
            $ref: '#/components/schemas/FeedbackScoreAverage_Public'
        comments:
          type: array
          readOnly: true
          items:
            $ref: '#/components/schemas/Comment_Public'
        trace_count:
          type: integer
          format: int64
          readOnly: true
        dataset_item_count:
          type: integer
          format: int64
          readOnly: true
        created_at:
          type: string
          format: date-time
          readOnly: true
        duration:
          $ref: '#/components/schemas/PercentageValues_Public'
        total_estimated_cost:
          type: number
          readOnly: true
        total_estimated_cost_avg:
          type: number
          readOnly: true
        usage:
          type: object
          additionalProperties:
            type: number
            format: double
            readOnly: true
          readOnly: true
        last_updated_at:
          type: string
          format: date-time
          readOnly: true
        created_by:
          type: string
          readOnly: true
        last_updated_by:
          type: string
          readOnly: true
        status:
          type: string
          enum:
          - running
          - completed
          - cancelled
        experiment_scores:
          type: array
          items:
            $ref: '#/components/schemas/ExperimentScore_Public'
        prompt_version:
          $ref: '#/components/schemas/PromptVersionLink_Public'
        prompt_versions:
          type: array
          items:
            $ref: '#/components/schemas/PromptVersionLink_Public'
        dataset_version_id:
          type: string
          description: ID of the dataset version this experiment is linked to. If not provided at creation, experiment will be automatically linked to the latest version.
          format: uuid
        dataset_version_summary:
          $ref: '#/components/schemas/DatasetVersionSummary_Public'
        pass_rate:
          type: number
          description: Pass rate for test suite experiments (0.0-1.0). Null for regular experiments.
          readOnly: true
        passed_count:
          type: integer
          description: Number of items that passed for test suite experiments. Null for regular experiments.
          format: int64
          readOnly: true
        total_count:
          type: integer
          description: Total number of items for test suite experiments. Null for regular experiments.
          format: int64
          readOnly: true
        assertion_scores:
          type: array
          description: Per-assertion average pass rates for test suite experiments. Null for regular experiments.
          readOnly: true
          items:
            $ref: '#/components/schemas/AssertionScoreAverage_Public'
    JsonListString_Write:
      type: object
      anyOf:
      - type: object
      - type: array
        items:
          type: object
      - type: string
    ExperimentScore:
      required:
      - name
      - value
      type: object
      properties:
        name:
          minLength: 1
          type: string
        value:
          type: number
    ExperimentItemStreamRequest:
      required:
      - experiment_name
      type: object
      properties:
        experiment_name:
          minLength: 1
          type: string
        limit:
          maximum: 2000
          minimum: 1
          type: integer
          format: int32
        last_retrieved_i

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# Full source: https://raw.githubusercontent.com/api-evangelist/opik/refs/heads/main/openapi/opik-experiments-api-openapi.yml