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Introducing GPT-5.4 mini and nano
March 17, 2026
GPT-5.4 mini and GPT-5.4 nano are new smaller, faster variants of GPT-5.4 optimized for coding, tool use, multimodal reasoning, and high-volume API and sub-agent workloads. They matter because they target lower-latency, higher-throughput deployments while preserving the core capabilities needed for agentic and multimodal applications.
GPT-5.4 mini and nano are smaller, faster versions of GPT-5.4 optimized for coding, tool use, multimodal reasoning, and high-volume API and sub-agent workloads.
Source: openai.com