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OpenAI has introduced two new artificial intelligence models, GPT-5.4 mini and GPT-5.4 nano, expanding its lineup of lightweight AI systems. The company describes them as its “most capable small models yet,” designed to deliver strong performance while prioritizing speed, efficiency, and lower operating costs.
The new models bring several capabilities of the larger GPT-5.4 system into a more compact format. They are aimed at real-time applications such as coding assistants, automated workflows, and tools that process images quickly.
The GPT-5.4 mini system has more advanced capabilities compared to the other option. According to OpenAI, the new system has enhanced performance compared to the previous GPT-5 mini system, including improvements in all areas such as coding, reasoning, multi-modal understanding, and tools. It has the capacity to run at over double its regular speed in certain circumstances, in addition to all the capabilities for performance as seen in the GPT-5.4 system under certain circumstances.
This technology has the advantage of attracting developers whose AI applications require quick response, as it has enhanced capabilities as well as efficient operation. The GPT-5.4 mini system has the capacity for entering text and image content, as well as executing functions, viewing the web, and accessing documents, in addition to managing computer control and workflow depending on the user’s capabilities. It has a 400,000 token context window, which enables it to support extended dialogue as well as intricate operations.
Also Read: OpenAI Launches GPT-5.3 Instant for ChatGPT: Check Features, Accuracy Boost, and Availability
OpenAI has made GPT-5.4 mini available across multiple platforms. Developers can use it through the API, while programmers can access it via Codex tools, including the app, command-line interface, IDE extensions, and web interface.
In ChatGPT, the model is available to Free and Go users through the “Thinking” option in the plus menu. When GPT-5.4 Thinking model usage limits reach their maximum point, other users will see it as a backup solution.
The GPT-5.4 nano model represents the most compact and affordable solution among all models in the GPT-5.4 system. OpenAI recommends it for simpler, high-volume tasks such as classification, data extraction, ranking, and coding sub-agents that support larger workflows.
The API currently serves as the only method to access GPT-5.4 nano. Its lower pricing structure is expected to help businesses deploy AI at scale while keeping operational costs under control.
