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OpenAI

Is GPT-5.5 out? Yes, since April 23, 2026

Yes. GPT-5.5 was released on April 23, 2026.

A browser notification for each confirmed release in this family. No account or email.

Have you used it? GPT-5.5

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Lab
OpenAI
Family
GPT
Release date
Source
OpenAI · GPT-5.5

What changed

  • context 1.05M tokens · Context window of GPT-5.5. GPT-5.4 is the previous model of the same tier, but the gap is beyond what a percentage explains.
  • price +100 % · Prompt price compared with GPT-5.4, same tier in this family. Went from $2.50 / MTok to $5.00 / MTok. Lower is better.

About GPT-5.5

GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...

Next GPT model to watch

Questions

When was GPT-5.5 released?
GPT-5.5 was released on April 23, 2026.
Who makes GPT-5.5?
GPT-5.5 is made by OpenAI.
What comes after GPT-5.5?
GPT-5.5 Pro, released on April 24, 2026.