DeepSeek V4 Pro vs GPT-5.6 Sol: How a 34x Cheaper Chinese Model Matched OpenAI and What It Means for the Industry

DeepSeek V4 Pro scores 80.6% on SWE-bench, verified at $0.87 per million output tokens, versus GPT-5.6 Sol’s $30 and 91.9% Terminal-Bench score.