DeepSeek Coder V2vsDeepSeek V3

DeepSeek Coder V2, developed by DeepSeek, is a specialized code model with 236 billion total parameters (21 billion active) and a 128K token context window. The model uses a Mixture-of-Experts architecture optimized for software development, excelling at code generation, debugging, code review, and technical documentation across multiple programming languages. It supports 338 programming languages and achieves competitive scores on HumanEval and MBPP coding benchmarks. As an open-source model, it can be deployed on-premise for organizations with strict code security requirements. Priced at $0.14 per million input tokens and $0.28 per million output tokens through the API, or free to self-host, DeepSeek Coder V2 offers professional-grade code assistance at substantially lower cost than proprietary alternatives. Its MoE architecture enables efficient inference despite the large total parameter count.

DeepSeek V3, developed by DeepSeek, is a Mixture-of-Experts model with 671 billion total parameters (37 billion active) and a 128K token context window. The model uses multi-head latent attention and auxiliary-loss-free load balancing for efficient expert routing. Reportedly trained for approximately $5.6 million, DeepSeek V3 challenged industry assumptions about the compute costs required for frontier AI. It performs competitively with GPT-4o and Claude 3.5 Sonnet across general reasoning, coding, and multilingual benchmarks. Priced at $0.27 per million input tokens and $1.10 per million output tokens, it offers strong capability at accessible pricing. As a fully open-source model, it can be self-hosted and fine-tuned. DeepSeek V3 ranks #5 on the Chatbot Arena leaderboard, reflecting its status as one of the most capable open models available.