DeepSeek says its R1 model did not learn by copying examples generated by other LLMs. Credit: David Talukdar/ZUMA via Alamy ...

DeepSeek-V3.1-Terminus comes just two months after the Chinese start-up launched V3.1, its most advanced model to date.

OpenAI astounded the tech industry for the second time this week by launching its newest flagship model, GPT-5, just days after releasing two new freely available models under an open source license.

The A.I. start-up said its new flagship technology was faster, more accurate and less likely to make stuff up. By Cade Metz Reporting from San Francisco ChatGPT is getting another upgrade. On Thursday ...