DeepSeek-V4-Pro is a flagship open-weight Mixture-of-Experts language model designed for high-performance reasoning, coding, and agent-based workflows at scale. It features approximately 1.6 trillion total parameters with around 49B activated during inference, enabling strong efficiency while maintaining frontier-level capability. The model supports an ultra-long context window of up to 1 million tokens, making it highly suitable for long-document reasoning, large codebases, and complex multi-step tasks. Architecturally, it introduces optimizations to reduce compute and memory costs while improving stability across long sequences. DeepSeek-V4-Pro is positioned as the high-end variant of the V4 family, outperforming most open-source models in areas such as agentic coding, STEM reasoning, and world knowledge, and approaching the performance of leading closed-source systems. It also supports advanced reasoning modes and tool-based workflows, enabling autonomous task execution.
Features
- 1.6T-parameter Mixture-of-Experts architecture
- 49B activated parameters for efficient inference
- 1M-token context window for ultra-long reasoning
- High performance in coding, STEM, and agent tasks
- Optimized architecture for lower compute and memory cost
- Advanced reasoning modes for deeper problem solving
- Strong compatibility with agent frameworks and tools
- Open-weight model for local deployment and customization