OpenAI Launches GPT-5.5 With 60% Fewer Hallucinations — and Doubled API Prices
In Brief: OpenAI released GPT-5.5 on April 23, delivering major benchmark gains and a 60% hallucination reduction over its predecessor — while doubling API prices across the board.
OpenAI shipped GPT-5.5 on Thursday, rolling it out immediately to ChatGPT Plus, Pro, Business, and Enterprise subscribers and making it available