Meta Releases Llama 4 Maverick with 400B Parameters
Meta has released Llama 4 Maverick, a 400B parameter open-weight model that matches GPT-5 on multiple benchmarks. The model is available under a permissive license for commercial use.
Meta has released Llama 4 Maverick, the flagship model in its fourth-generation Llama family, featuring 400 billion parameters and performance that rivals the best closed-source models. Maverick achieves 92.1% on MMLU and 91.8% on HumanEval, placing it within striking distance of GPT-5.2 on most evaluations.
The model uses a mixture-of-experts architecture that activates only 52B parameters per forward pass, making it significantly more efficient to serve than its total parameter count suggests. Meta reports that Maverick runs at 45 tokens per second on a single 8xH100 node, making it practical for production deployment.
Llama 4 Maverick introduces native multimodal capabilities, processing text, images, and audio in a single architecture. The vision capabilities are particularly strong, outperforming GPT-4V on document understanding tasks and matching Gemini 3 on visual reasoning benchmarks.
Meta is releasing Maverick under an updated Llama license that removes the previous user-count restriction, making it fully available for commercial use regardless of company size. The company is also releasing smaller variants at 70B and 8B parameters.
The release continues Meta's strategy of using open-source AI to commoditize the model layer and drive adoption of its broader AI ecosystem. CEO Mark Zuckerberg noted that Llama models now power over 100,000 commercial applications worldwide.
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