{
  "schema_version": "1.7.0",
  "id": "x_SHAPI-openai-legacy-gpt-o-series-shutdown-2026-10-23-responses",
  "modified": "2026-10-31T01:30:12Z",
  "published": "2026-04-22T00:00:00Z",
  "summary": "gpt-3.5-turbo, gpt-4, gpt-4-turbo, o1, o3-mini and o4-mini shut down on 2026-10-23 (Responses API)",
  "details": "On 2026-10-23 OpenAI shuts down gpt-3.5-turbo (0125), gpt-4 (0613), gpt-4-1106-preview, gpt-4-turbo, gpt-4.1-nano, gpt-4o-2024-05-13, o1, o1-pro, o3-mini and o4-mini, plus fine-tunes of gpt-3.5-turbo, gpt-4, gpt-4.1-nano and o4-mini. This advisory covers calls to the Responses API (POST /v1/responses) that send one of these model names (or their aliases); they fail from then on. openai-legacy-gpt-o-series-shutdown-2026-10-23 covers chat completions.\n\nSearch request bodies and config for these model names and switch them: gpt-3.5-turbo and o4-mini to gpt-5.6-terra; gpt-4, gpt-4-1106-preview, gpt-4-turbo, gpt-4o-2024-05-13, o1 and o3-mini to gpt-5.6-sol; o1-pro to gpt-5.6-sol with reasoning.mode: pro; gpt-4.1-nano to gpt-5.6-luna. Re-run fine-tunes on the new base models. The same model names also stop working on the Responses and legacy Completions endpoints.",
  "affected": [
    {
      "ecosystem_specific": {
        "provider": "openai",
        "endpoint": {
          "method": "POST",
          "path": "/v1/responses"
        },
        "change_class": "version-sunset",
        "trigger": {
          "body": [
            {
              "field": "model",
              "values": [
                "gpt-3.5-turbo",
                "gpt-3.5-turbo-0125",
                "gpt-4",
                "gpt-4-0613",
                "gpt-4-1106-preview",
                "gpt-4-turbo",
                "gpt-4.1-nano",
                "gpt-4o-2024-05-13",
                "o1",
                "o1-pro",
                "o3-mini",
                "o4-mini"
              ]
            }
          ]
        },
        "effective_date": "2026-10-23"
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://developers.openai.com/api/docs/deprecations"
    }
  ],
  "database_specific": {
    "severity": "medium",
    "status": "verified",
    "url": "https://shapi.dev/osv/openai-legacy-gpt-o-series-shutdown-2026-10-23-responses.json"
  }
}