DeepSeek V4 Review: The Open-Source Giant Bridging the Frontier Gap

DeepSeek V4 has officially arrived, fundamentally shattering the pricing floor for frontier-class AI. Featuring a massive 1.6 Trillion parameter MoE architecture and a 1-million token context window, this open-source giant matches GPT-5.5 and Gemini 3.1 Pro at a fraction of the hardware cost.