DeepSeek has finally released its much-anticipated next-generation foundational artificial intelligence model, the open-source V4, which it said was competitive with leading US closed-source models from the likes of OpenAI and Google DeepMind.

The Hangzhou-based AI start-up released two versions of the model on Friday, with the V4-pro model boasting 1.6 trillion parameters, making it the company’s biggest-ever model by that metric, while the smaller V4-flash model has 284 billion parameters. A...