---
title: "Creates a new version of the model resource"
method: POST
path: "/api/v1/models/{id}/versions"
tags: ["Models"]
---

# Creates a new version of the model resource

`POST /api/v1/models/{id}/versions`

## Path parameters

- `id` integer, required

## Headers

- `X-Fields` string, mask

## Request body

- ModelVersionLoad
  - `description` string — Description of the Model Version.
  - `artifact` integer, required — The artifact representing the Model Version.

## Response `200`

Success

- ModelVersionDump
  - `description` string — Description of the Model Version.
  - `model` ModelRef
    - `id` integer — ID for the Model resource.
    - `group` GroupRef
      - `id` integer — ID for the Group resource.
      - `name` string — Name of the Group resource.
      - `url` string — URL for accessing the full Group resource.
    - `url` string — URL for accessing the full Model resource.
    - `name` string, required — Name of the Model resource.
  - `artifact` ArtifactRefDump
    - `id` integer — ID for the Artifact resource.
    - `group` GroupRef
      - `id` integer — ID for the Group resource.
      - `name` string — Name of the Group resource.
      - `url` string — URL for accessing the full Group resource.
    - `url` string — URL for accessing the full Artifact Resource.
  - `versionNumber` integer — The version number of the Model.
  - `createdOn` string, date-time — Timestamp when the Model Version was created.

## Changes

- **2026-07-17** `a73101579c5c` — 2 info
  - added `#/components/schemas/ArtifactRef-dump` to the `artifact` response property `allOf` list for the response status `200`
  - removed `#/components/schemas/ArtifactRef` from the `artifact` response property `allOf` list for the response status `200`
- **2024-07-24** `9a36b9043379` — 2 info
  - added `#/components/schemas/ArtifactRef` to the `artifact` response property `allOf` list for the response status `200`
  - removed `#/components/schemas/ArtifactRef-dump` from the `artifact` response property `allOf` list for the response status `200`

[Change history](https://skmtc.dev/usnistgov/apis/dioptra-rest-api/changes/api/v1/models/:id/versions/post.md)

---

[API](https://skmtc.dev/usnistgov/apis/dioptra-rest-api.md) · [All operations](https://skmtc.dev/usnistgov/apis/dioptra-rest-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/usnistgov/dioptra-rest-api/revisions/a73101579c5c/schema)