# gpt-4o, gpt-4o-mini, gpt-4.1 and gpt-4.1-mini snapshots shut down on 2027-01-14 (Responses API)

- **Provider:** OpenAI
- **Endpoint:** `POST /v1/responses`
- **Effective:** 2027-01-14
- **Severity:** medium
- **Change:** version-sunset
- **Status:** verified

## What changed

OpenAI shuts down gpt-4o-2024-08-06, gpt-4o-2024-11-20, gpt-4o-mini-2024-07-18, gpt-4.1-2025-04-14 and gpt-4.1-mini-2025-04-14 on 2027-01-14, and fine-tunes of these models follow the same date. This advisory covers calls to the Responses API (POST /v1/responses) that send one of these models; openai-gpt-4o-gpt-4-1-snapshots-shutdown-2027-01-14 covers chat completions. The notice lists dated snapshots and does not say what happens to the undated gpt-4o or gpt-4o-mini aliases.

## What to do

Replace these model names with gpt-6-luna (OpenAI's recommended replacement) in request bodies and config, re-run fine-tunes on a supported base model, and compare output quality before 2027-01-14. The same model names are also used on the Responses API.

## Sources

- Provider notice (2026-10-14): https://developers.openai.com/api/docs/deprecations

## Machine-readable

- Advisory: https://github.com/SriVarshini09/shapi-advisories/blob/main/advisories/openai-gpt-4o-gpt-4-1-snapshots-shutdown-2027-01-14-responses.json
- OSV: https://shapi.dev/osv/openai-gpt-4o-gpt-4-1-snapshots-shutdown-2027-01-14-responses.json