GPT-5.4 Nano
OpenAI🇺🇸 United States
The most lightweight and cost-efficient variant of the GPT-5.4 family. Optimized for speed-critical and high-volume tasks. Supports text and image inputs for classification, data extraction, and agent execution.
Context window400K tokens
Input / 1M tokens$0.2
Output / 1M tokens$1.25
Version History
gpt-5.4-nano-2026-03-17major
GPT-5.4 Nano launches as the smallest, fastest member of the GPT-5.4 family. 400K context, multimodal input, optimized for high-volume agentic tasks at $0.20/$1.25 per 1M tokens.
Benchmark Scores
Full leaderboard →85.2%
HumanEval
82.5%
MMLU
210.0 tokens_per_sec
Speed (tok/s)