Meta has launched a new open-weight AI model which it claims can outperform similar products from leading Chinese developers. Meta's chief of AI Alexandr Wang wrote on X that Muse Spark Open "is the most capable US open-weight model to date". Unlike the so-called closed models such as Anthropic's Claude or OpenAI's ChatGPT, developers can download the parameters, or weights, of an open-weight model and then customize it. Interestingly, Chinese developers have emerged as dominant players in the open-weight market for AI models over the past couple of years.
Alibaba's Qwen, Moonshot AI's Kimi K3 and Z.ai's GLM models have been considered open-weight frontrunners globally, but Meta claims its new open model now competes on a similar level.
"Built for coding and agentic work," Muse Spark Open "excels at long-horizon tasks, complex software engineering, and multi-step reasoning," Meta said in a blogpost, adding that "strong safeguards" have been integrated into the new model.
Meta said that Muse Spark Open is also "optimized" to run on Apple's advanced M5 Ultra chips, signaling an unusual partnership between the two tech giants.
Meta boss Mark Zuckerberg wrote on X that the new model "runs great on new Mac Studios thanks to work" with Apple and its new CEO John Ternus.
The launch comes just days after Meta announced its newest closed model.
On Monday, the company unveiled two new "frontier" models called Wonder and Wonder Full, which the company claimed rival the most advanced versions of ChatGPT and Claude.
