Llama 4 is Meta's most capable open-source model, with 405B parameters. It's competitive with closed-source frontier models while being fully open-weight, letting anyone run it on their own infrastructure. A game-changer for the open-source AI ecosystem.
See how Llama 4 stacks up against the competition. View all comparisons →
Most capable open model. Competitive with frontier closed-source models across the board.