deepseek-v4-pro vs gpt-5.4-2026-03-05

Flagship Mixture-of-Experts model with 1.6T total parameters and 49B activated per token. Trained on 32T+ tokens with hybrid attention for efficient 1M context processing.

GPT-5.4 is OpenAI's most capable and efficient frontier model for professional work, combining advanced reasoning, coding, and native computer-use capabilities into a single model. It supports up to 1 million tokens of context, enabling agents to plan, execute, and verify tasks across long horizons. It is also the most factual model OpenAI has released, with individual claims 33% less likely to be false compared to GPT-5.2.