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Arcee Releases Trinity Large Thinking: 400B Open-Source Reasoning Model as Western Alternative to Chinese AI

Arcee, a 26-person U.S. startup, has released Trinity Large Thinking, a 400-billion parameter open-source reasoning model built on a $20 million budget. The company positions it as the most capable open-weight model from a non-Chinese company, offering Western businesses an alternative to Chinese models with genuine Apache 2.0 licensing. While not outperforming closed-source models from major labs, it provides independence from both Chinese government concerns and the policy changes of large AI companies.