ReleaseOpenAIVerified
OpenAI releases GPT-5.5 and GPT-5.5 Pro
Listen GPT-5.5
OpenAI released GPT-5.5 and GPT-5.5 Pro on April 23, 2026, calling GPT-5.5 its "smartest and most intuitive to use model yet," with gains in agentic coding, knowledge work, math, and scientific research. The models reached the API on April 24.
GPT-5.5 rolled out to Plus, Pro, Business, and Enterprise tiers in ChatGPT; GPT-5.5 Pro went to Pro, Business, and Enterprise. OpenAI framed the launch as a step toward a unified "super app."
Corroborating sources
- TechCrunch — GPT-5.5
https://techcrunch.com/2026/04/23/openai-chatgpt-gpt-5-5-ai-model-superapp/
- Introducing GPT-5.5
https://openai.com/index/introducing-gpt-5-5/