gpt-5.4-mini-2026-03-17

GPT-5.4-Mini is a lightweight model in OpenAI’s GPT-5.4 series, renowned for its exceptional energy efficiency ratio. While inheriting GPT-5.4’s powerful logical reasoning and instruction-following capabilities, it achieves faster inference speeds and extremely low per-unit operating costs through a streamlined architectural design. The Mini model is designed to provide developers with the optimal balance between high performance and cost-effectiveness, making it an ideal foundation for building high-frequency real-time applications, mobile AI features, and agents for large-scale production environments.

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Core Capabilities

Ultimate Reasoning Cost-Effectiveness: Delivers GPT-5.4-level intelligent experiences while significantly optimizing token consumption and inference latency, dramatically reducing long-term operational costs for enterprise-level applications.

Low-Latency Interaction Experience: With ultra-short prefill time (Time to First Token) and outstanding generation rates, it ensures a smooth and seamless experience in dialogue, retrieval-augmented generation (RAG), and real-time recommendation scenarios.

High-Performance Optimization for Agents: Specifically trained to enhance performance in short-sequence tasks, function calls, and tool usage, making it the preferred choice for lightweight agents and automated task execution.

Multi-Environment Deployment Flexibility: Thanks to its lightweight nature, it’s not only suitable for cloud-based API calls but also ideally integrated into resource-constrained environments—such as edge devices and on-premises clients—meeting diverse business deployment needs.