DeepSeek vs ChatGPT: The Definitive 2026 Comparison
OpenAI’s GPT-5.6 reached general availability on July 9, 2026, and DeepSeek’s answer landed on July 31 as V4-Flash-0731. The two sit close enough on coding and reasoning that the argument has moved almost entirely to cost, and there the honest answer depends on which OpenAI tier you actually compare against. Measured against GPT-5.6 Sol at $5.00 / $30.00 per million tokens, DeepSeek V4 Flash at $0.14 / $0.28 is 36x cheaper on input and 107x on output. Measured against OpenAI’s cheapest tier, GPT-5.6 Luna at $0.20 / $1.20, the same DeepSeek model is 1.4x and 4.3x cheaper. Both numbers are real, and most comparisons print only the first one. This […]
