GPT 4o: Definition and Examples

GPT-4o is a large language model developed by OpenAI and unveiled in May 2024. The suffix 'o' stands for 'omni', reflecting its ability to simultaneously process multiple modalities: text, image, and audio. Unlike previous versions that relied on separate modules for each input type, GPT-4o integrates all these modalities into a single neural network, significantly improving the fluidity and speed of interactions.

In terms of performance, GPT-4o achieves a level comparable to GPT-4 Turbo in text understanding and generation, while being significantly faster and cheaper via the API. It particularly excels in image understanding (graphs, screenshots, scanned documents) and in processing non-English languages, making it more accessible to an international audience.

One of the major advances of GPT-4o lies in its voice capabilities. The model can understand tone, emotions, and context of a spoken conversation, then respond with a natural and expressive voice, all with latency reduced to a few hundred milliseconds. This fluidity brings human-machine interaction closer to natural human conversation.

GPT-4o is available to free ChatGPT users (with usage limits), to Plus and Team subscribers without restrictions, and via the OpenAI API. It forms the basis of many conversational AI applications, document analysis, and voice assistants deployed in production.