GPT-5.4 Pro

Researchers released TaxCalcBench, an open-source benchmark evaluating AI models' ability to file taxes using realistic PDF inputs for federal and state returns. GPT-5.4 Pro achieved the highest stric…

Meta chief AI officer Alexandr Wang said the company's recently launched Muse Spark model is "not at the tier of the leading frontier models," calling it an "appetizer" while Meta trains stronger syst…