ReleasedApr 23, 2026 ·
GPT-5.5 is out
OpenAI shipped GPT-5.5.
OpenAIOpenAI released GPT-5.5 on Apr 23, 2026. The company announced it itself (OpenAI).
It follows GPT-5.4, 49 days earlier. Releases in the OpenAI GPT line usually land about 49 days apart.
GPT-5.6 replaced it on Jun 26, 2026.
“Introducing GPT-5.5”
Released
Apr 23, 2026
Line
OpenAI GPT
Previous
GPT-5.4 (Mar 5, 2026)
Confirmed by
The company's own announcement
Source: OpenAI