OpenAI introduces GPT-5.4 mini and nano, smaller and faster versions of GPT-5.4 optimized for coding, tool use, multimodal reasoning, and high-volume API and sub-agent workloads.
New model
OpenAI introduces GPT-5.4 mini and nano, smaller and faster versions of GPT-5.4 optimized for coding, tool use, multimodal reasoning, and high-volume API and sub-agent workloads.
gpt-5.4-mini-high · 1,447 (1,443–1,451) · 63,449 votes
GPT-5.4 Mini · 1,447 · $1.69 per 1M tokens
GPT-5.4 Mini · 1,447 · $1.69 per 1M tokens
LMArena, CC BY 4.0, 15 October 2026 · prices OpenRouter, list price blended 3:1, read 20 October 2026 · Artificial Analysis, read 20 October 2026