OpenAI Launches GPT-5.5 Instant as Default ChatGPT Model With Reduced Hallucinations and Deeper Memory
OpenAI has replaced GPT-5.3 Instant with a new foundation model, GPT-5.5 Instant, as the default engine powering ChatGPT. The company said the updated model significantly reduces hallucinations in high-stakes domains including law, medicine, and finance, while preserving the low-latency performance of its predecessor. Benchmark results show meaningful gains, with the new model scoring 81.2 on […]