GPT-5.5: model archive
GPT-5.5 is a previous model version. This page remains for older publications, links, and version history; use GPT-5.6 Sol for new work.
GPT-5.5 is not available in Neiron. The closest alternative in Neiron is GPT-5.6 Sol.
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FAQ
Can I select GPT-5.5 in Neiron now?
No. Use the current GPT-5.6 Sol model for new work.
Why is the archive page preserved?
It keeps older links and publication context usable after the model family is updated.