Use GPT 5.4 Mini and Nano on AI Gateway (opens in new tab)

# Use GPT 5\.4 Mini and Nano on AI Gateway **Published:** March 17, 2026 | **Authors:** Walter Korman, Jerilyn Zheng --- GPT-5.4 Mini and GPT-5.4 Nano from OpenAI are now available on Vercel AI Gateway. Both models deliver state-of-the-art performance for their size class in coding and computer use, and are built for sub-agent workflows where multiple smaller models coordinate on parts of a larger task. The models also support the verbosity and reasoning level parameters, giving you contr...