ZDNETOpen-source  artificial intelligence (AI) has reached another milestone -- and the cost differences it represents could shake up the industry.On par with o1On Monday, Chinese AI lab DeepSeek announced the release of R1, the full version of its newest open-source reasoning model, which the company launched in preview in November. The company noted that R1 beats or is on par with OpenAI's o1 in several math, coding, and reasoning benchmarks.Also: $450 and 19 hours is all it takes to rival Ope...