Jay Peters is a senior reporter covering technology, gaming, and more. He joined The Verge in 2019 after nearly two years at Techmeme. OpenAI’s newest default model for ChatGPT might not make stuff up as much. Hallucinations have been an ongoing problem for AI models, but OpenAI says its new GPT-5.5 Instant model has “significant improvements in factuality across the board.” The company claims that, based on “internal evaluations,” GPT-5.5 Instant produced “52.5% fewer hallucinated claims” than its Instant model for GPT-5.3 “on high-stakes prompts covering areas like medicine, law, and finance.” GPT-5.5 Instant also “reduced inaccurate claims by 37.3% on especially challenging conversations users had flagged for factual errors.” OpenAI also claims that GPT-5.5 Instant is “more capable across everyday tasks,” like analyzing image uploads and knowing when to turn to the web for an answer.…