OpenAI o3 will be retired from ChatGPT on August 26, 2026 following a 90-day sunset period. GPT-4.5 will be retired from ChatGPT on June 27, 2026 following a 30-day sunset period. These models are currently available to paid users only. Changes apply to ChatGPT only; no API changes.
Fetched May 30, 2026
Continuing to retire older models with limited usage in ChatGPT. OpenAI o3 will be retired from ChatGPT on August 26, 2026 following a 90-d…
OpenAI · ModelsGPT-5.5 Instant is now ChatGPT's default model, replacing GPT-5.3 Instant. Improves accuracy, clarity, conciseness, image understanding, ST…
OpenAI · ChatGPTGPT-4.1 is deprecated across all GitHub Copilot experiences (Copilot Chat, inline edits, ask and agent modes, code completions) effective J…
GitHub · GitHub ChangelogAll Gemini models and several others (GPT-5.2 Codex, GPT-5.4 nano) have been removed from Copilot Chat on the web to ensure reliable respon…
GitHub · GitHub Changelog