March 5 2026
OpenAI ships GPT-5.4—three variants and a 1.05M token context
OpenAI released GPT-5.4 on March 5, 2026 in three variants: Standard, Thinking (reasoning-first) and Pro (maximum capability). The API supports a context window of up to 1.05 million tokens—the largest OpenAI has ever offered commercially.
Read more→