Model
GPT-5.4 nano
OpenAI's cheapest GPT-5.4-class model for high-volume automation and simple agent tasks.
Closed sourcereasoningGPT-5.4generally availableReleased 2026-03-05400K context128K max outputKnowledge cutoff 2025-08-31OpenAIOfficial page
Model metadata
Modalities: text, imageInput: $0.20/MTokOutput: $1.25/MTokAPI ID: gpt-5.4-nano