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GPT-5.5 Instant replaces GPT-5.3 as ChatGPT's default model with smarter, more concise answers, improved personalization from past chats and connected Gmail, and memory source controls. For ChatGPT users on all plans.
GPT‑5.5 Instant is GPT-5.5 Instant replaces GPT-5.3 as ChatGPT's default model with smarter, more concise answers, improved personalization from past chats and connected Gmail, and memory source controls. For ChatGPT users on all plans.
Yes, GPT‑5.5 Instant is free to use.
Some popular alternatives to GPT‑5.5 Instant include Den, SuperX, Siteline, Inspector. Compare their monthly traffic and features above.