---
title: "List chunk completion events on a TrainingSession."
method: GET
path: "/v1/accounts/{account_id}/trainingSessions/{training_session_id}/chunkOutputs"
tags: ["gateway.openapi_Gateway"]
---

# List chunk completion events on a TrainingSession.

`GET /v1/accounts/{account_id}/trainingSessions/{training_session_id}/chunkOutputs`

## Request

- Base URL: `https://api.fireworks.ai`
- URL: `https://api.fireworks.ai/v1/accounts/{account_id}/trainingSessions/{training_session_id}/chunkOutputs`
- Auth: HTTP bearer
- TypeScript: <https://skmtc.dev/fw-ai-external/apis/gateway-rest-api/docs/v1/accounts/:account_id/trainingSessions/:training_session_id/chunkOutputs/get.ts> (a function with typed inputs; its response is checked against the schema)

## Path parameters

- `account_id` string, required
- `training_session_id` string, required

## Query parameters

- `pageSize` integer
- `pageToken` string
- `filter` string
- `orderBy` string
- `readMask` string

## Response `200`

A successful response.

- GatewayListTrainingSessionChunkOutputsResponse
  - `chunks` GatewayTrainingSessionChunkOutput[]
    - `name` string
    - `step` integer
    - `endOfEpoch` boolean
    - `outputDatasetName` string
    - `checkpointPath` string: Server-signed URL (24h TTL) suitable for direct browser download. Empty string when signing is unavailable for the underlying object.
    - `epochStreamlogPath` string: Server-signed URL (24h TTL). Empty when signing is unavailable.
    - `distribution` GatewayDistributionSnapshot
      - `metrics` object: Keyed by metric name (e.g. "reward", "format_valid").
      - `correlation` GatewayCorrelationMatrix: CorrelationMatrix is a square matrix; rows[i].values[j] is the Pearson correlation between labels[i] and labels[j].
        - `labels` string[]
        - `rows` GatewayCorrelationRow[]
          - `values` number[]
    - `epochId` string
    - `createTime` string, date-time
    - `updateTime` string, date-time
  - `nextPageToken` string
  - `totalSize` integer

## Changes

- **2026-10-16** `3bf245180173`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/fw-ai-external/apis/gateway-rest-api/changes/v1/accounts/:account_id/trainingSessions/:training_session_id/chunkOutputs/get.md)

---

[API](https://skmtc.dev/fw-ai-external/apis/gateway-rest-api.md) - [All operations](https://skmtc.dev/fw-ai-external/apis/gateway-rest-api/llms.txt) - [OpenAPI document](https://skmtc.dev/fw-ai-external/apis/gateway-rest-api/revisions/3bf245180173?raw)