---
title: "Get weights-sync operation"
method: GET
path: "/v1/rl/training-sessions/{session_id}/operations/weights-sync/{operation_id}"
tags: ["RL"]
---

# Get weights-sync operation

`GET /v1/rl/training-sessions/{session_id}/operations/weights-sync/{operation_id}`

## Request

- Base URL: `https://api.together.ai`
- URL: `https://api.together.ai/v1/rl/training-sessions/{session_id}/operations/weights-sync/{operation_id}`
- Auth: HTTP bearer

Retrieves the current status and result of a weights-sync operation.

## Path parameters

- `session_id` string, required: Training session ID
- `operation_id` string, required: Operation ID

## Response `200`

- RLWeightsSyncOperation: Async weights-sync operation
  - `id` string, required: Operation ID
  - `status` 'TRAINING_OPERATION_STATUS_UNSPECIFIED' | 'TRAINING_OPERATION_STATUS_PENDING' | 'TRAINING_OPERATION_STATUS_RUNNING' | 'TRAINING_OPERATION_STATUS_COMPLETED' | 'TRAINING_OPERATION_STATUS_FAILED', required
  - `output` RLWeightsSyncResult: Result of a weights-sync operation
    - `weights_version` union, required: Policy version now available for sampling, or queued to become available for deferred sync modes. Comparable to `policy_segments[].version` on sample results.
      - string
      - integer
  - `error` RLTrainingOperationError: Error details for a failed training operation
    - `code` 'TRAINING_OPERATION_ERROR_CODE_UNSPECIFIED' | 'TRAINING_OPERATION_ERROR_CODE_RESOURCE_EXHAUSTED' | 'TRAINING_OPERATION_ERROR_CODE_TIMEOUT' | 'TRAINING_OPERATION_ERROR_CODE_INTERNAL_ERROR' | 'TRAINING_OPERATION_ERROR_CODE_SESSION_NOT_ACTIVE' | 'TRAINING_OPERATION_ERROR_CODE_INVALID_INPUT' | 'TRAINING_OPERATION_ERROR_CODE_NON_FINITE_LOSS': Application error code for a failed training operation
    - `message` string: Human-readable error message

## Other responses

- `default`: An unexpected error response.

## Changes

- **2026-10-22** `bb5257b3173a`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/together/apis/together-apis/changes/v1/rl/training-sessions/:session_id/operations/weights-sync/:operation_id/get.md)

---

[API](https://skmtc.dev/together/apis/together-apis.md) - [All operations](https://skmtc.dev/together/apis/together-apis/llms.txt) - [OpenAPI document](https://skmtc.dev/together/apis/together-apis/revisions/93438ddac711?raw)