GPT-5.5 Instant Mini in ChatGPTJul 6, 2026
GPT-5.5 Instant Mini replaces GPT-5.3 as rate-limit fallback
GPT-5.5 Instant Mini is now the fallback model for users hitting GPT-5.5 Instant or Auto rate limits, replacing GPT-5.3 Instant Mini. The m…
OpenAI · ChatGPT