OpenAI will shut down the original GPT-4o snapshot in its API on October 23, and the #keep4o campaign is asking to preserve it
The gpt-4o-2024-05-13 snapshot, the version of GPT-4o introduced in May 2024, will stop working in the OpenAI API on October 23, 2026, with GPT-5.6 Sol as the recommended replacement; meanwhile, users rallying under the #keep4o hashtag are asking the company to preserve or release those models.