{
  "$schema": "https://modeldeprecations.dev/api/v1/schema.json",
  "provider": "openai",
  "model": "o3",
  "name": "o3",
  "aliases": [
    "o3-2025-04-16"
  ],
  "description": "The reasoning model that made chain-of-thought a product feature rather than a prompting trick, and the last o-series flagship before the line was folded into GPT-5. It outlived o1 by more than a year and is still widely referenced in evaluation code and papers.",
  "released_on": "2025-04-16",
  "deprecated_on": "2026-06-11",
  "shutdown_on": "2026-12-11",
  "status": "deprecated",
  "replacements": [
    {
      "provider": "openai",
      "model": "gpt-5.6-sol",
      "recommended": true,
      "note": "Both are reasoning models, so max_completion_tokens and reasoning_effort carry over. Reasoning tokens are billed as output on both, which is the line item to compare.",
      "external": false
    }
  ],
  "sources": [
    {
      "url": "https://developers.openai.com/api/docs/deprecations",
      "title": "OpenAI API deprecations",
      "accessed": "2026-07-30"
    }
  ],
  "last_verified": "2026-07-30",
  "computed_status": "deprecated",
  "asOf": "2026-07-30"
}