DeepSeek V4 Pro 0813 (GA): 1M Context + Mixture-of-Experts Explained
DeepSeek V4 Pro 0813 is an MoE (Mixture-of-Experts) model with a 1M-token context window, released Aug 12, 2026. This guide explains MoE, tokens, long-context tradeoffs, and how to call the model on OpenRouter with reasoning-enabled streaming.