The American startup is pitching investors on a $1 billion+ valuation to train a model over a trillion parameters, aiming to reclaim the open-weight lead from Chinese labs like Moonshot and DeepSeek.

Despite what its name suggests, OpenAI hadn’t released an “open” model—one that includes access to the weights, or the numerical parameters often described as the model’s brains—since GPT-2 in 2020.

(Bloomberg) -- Tech companies and academics have long wrestled with the risks and rewards of building open-source software. But the frenzy around generative artificial intelligence has lent new ...

Add Yahoo as a preferred source to see more of our stories on Google. China's open-source artificial intelligence models may have caught up or "even pulled ahead" of their US counterparts in ...

OpenAI just dropped two new open-weights models. Here's why that isn't the same as being fully open. Katelyn is a writer with CNET covering artificial intelligence, including chatbots, image and video ...

When DeepSeek released its DeepSeek reasoning model in early 2025, it tanked the US stock market. The Chinese startup showed a new way of training frontier AI that didn't rely on access to expensive, ...

OpenAI CEO Sam Altman said Monday that his company intends to release a “powerful new open-weight language model with reasoning” in the next few months. That would mark a major shift for a company ...

Forbes contributors publish independent expert analyses and insights. I am an MIT Senior Fellow & Lecturer, 5x-founder & VC investing in AI A big debate about open versus closed AI systems is shaping ...

Think you have what it takes to become a model, or know someone else who has this dream? Whether you have modeling experience or not — here's your chance to walk the runway. Ross has been producing ...

When OpenAI unveiled its first open-weight models in years this August, it wasn’t just tech companies that were paying attention. The release also excited US military and defense contractors, which ...