The company is still working on the largest model within the Llama 4 lineup. According to Meta Chief Executive Mark Zuckerberg, it’s called Llama 4 Behemoth, and it will be the “highest performing base model in the world” once it’s released.

The release follows a flurry of activity in the open-source AI world, spurred in part by Chinese lab DeepSeek’s rapid ascent. Its models — notably R1 and V3 — have performed competitively against Llama 2, prompting Meta to accelerate Llama 4 development, reportedly launching internal “war rooms” to reverse-engineer DeepSeek’s efficiency gains.