---
title: "Get Chat Completion Event"
method: GET
path: "/v1/observability/chat-completion-events/{event_id}"
tags: ["beta.observability.chat_completion_events"]
---

# Get Chat Completion Event

`GET /v1/observability/chat-completion-events/{event_id}`

Get Chat Completion Event

## Path parameters

- `event_id` string, uuid, required

## Response `200`

Successful Response

- ChatCompletionEvent
  - `event_id` string, required
  - `correlation_id` string, required
  - `created_at` string, date-time, required
  - `extra_fields` object, required
  - `nb_input_tokens` integer, required
  - `nb_output_tokens` integer, required
  - `enabled_tools` object[], required
  - `request_messages` object[], required
  - `response_messages` object[], required
  - `nb_messages` integer, required
  - `chat_transcription_events` ChatTranscriptionEvent[], required
    - `audio_url` string, required
    - `model` string, required
    - `response_message` object, required

## Other responses

- `400` — Bad Request - Invalid request parameters or data
- `404` — Not Found - Resource does not exist
- `408` — Request Timeout - Operation timed out
- `409` — Conflict - Resource conflict
- `422` — Unprocessable Entity - Validation error

## Changes

- **2026-08-14** `61436a496404` — 5 warning
  - added the new `OPTIMIZATION_TRIAL_KEY_ALREADY_EXISTS` enum value to the `detail/error_code/anyOf[subschema #1: ObservabilityErrorCode]/` response property for the response status `400`
  - added the new `OPTIMIZATION_TRIAL_KEY_ALREADY_EXISTS` enum value to the `detail/error_code/anyOf[subschema #1: ObservabilityErrorCode]/` response property for the response status `404`
  - added the new `OPTIMIZATION_TRIAL_KEY_ALREADY_EXISTS` enum value to the `detail/error_code/anyOf[subschema #1: ObservabilityErrorCode]/` response property for the response status `408`
  - added the new `OPTIMIZATION_TRIAL_KEY_ALREADY_EXISTS` enum value to the `detail/error_code/anyOf[subschema #1: ObservabilityErrorCode]/` response property for the response status `409`
  - …1 more

[Change history](https://skmtc.dev/mistral/apis/mistral-ai-api/changes/v1/observability/chat-completion-events/:event_id/get.md)

---

[API](https://skmtc.dev/mistral/apis/mistral-ai-api.md) · [All operations](https://skmtc.dev/mistral/apis/mistral-ai-api/llms.txt) · [OpenAPI document](https://skmtc.dev/mistral/apis/mistral-ai-api/revisions/4cb0b5382d4f?raw)