OpenAI āModel Not Foundā Error? GPT-5.5 Was Removed from ChatGPT on October 14: 5 Troubleshooting Steps and Alternatives
Early on October 15, many users ran into the same error when sending messages through the ChatGPT website, Codex, or their own scripts: OpenAI model not found. The full message usually read: āThe model gpt-5.5 does not exist or you do not have access to it.ā The obvious question was: Has GPT-5.5 been retired? The…
