Arcee Releases Trinity: 400B-Parameter Open-Source Reasoning Model Under Apache 2.0; OpenAI/Anthropic/Google Unite Against Chinese Model Copying

Arcee, a 26-person US startup, released Trinity, a 400-billion-parameter open-source reasoning model under Apache 2.0, drawing attention from developers frustrated by restrictive licensing on Meta's LLaMA models and positioning it as a genuinely open enterprise alternative. Separately, OpenAI, Anthropic, and Google are collaborating through the Frontier Model Forum to detect and combat adversarial distillation attempts by Chinese actors attempting to copy their models — a signal of coordinated defensive action among top US AI labs against IP theft.