OpenAI unveils GPT-5.5 Instant as new default ChatGPT model
OpenAI introduced a new foundation model, GPT-5.5 Instant, set to replace GPT-5.3 Instant as the default model in ChatGPT. The company on Tuesday said the upgrade reduces hallucinations in high-stakes areas such as law, medicine, and finance, while preserving the fast response times of the previous version. GPT-5.5 was originally released last month, with OpenAI […]







