AI Models
GPT-5.5 Tops Benchmarks but Hallucinates Often, Costs 20% More
OpenAI's GPT-5.5 leads the Artificial Analysis Intelligence Index with 60 points, surpassing Claude Opus 4.7 and Gemini 3.1 Pro Preview. Its API pricing shows a net 20 percent increase over GPT-5.4 due to doubled rates offset by 40 percent fewer tokens. The model achieves top accuracy on fact benchmarks yet hallucinates at an 86 percent rate.
Apr 243 minNeura News