OpenAI says GPT-4o matches ChatGPT-4 Turbo performance when it comes to text in English and code, with significant improvement in text in non-English languages. It's also much faster than GPT-4 and better at vision and audio understanding compared to existing models.

Ways to access ChatGPT-4o in the API According to OpenAI GPT-4o will be available in ChatGPT and the API as a text and vision model initially. Specifically, GPT-4o will be available in ChatGPT Free, Plus, and Team and in the Chat Completions API, Assistants API, and Batch API.

To try and access GPT-4o, simply log into your ChatGPT account via a web browser. In the top left-hand corner, check the drop-down menu for the GPT-4o option, labeled as OpenAI's "newest and most advanced model." By signing up you agree to our Terms of Use and Privacy Policy.

The power and speed of GPT-4o comes from being a single model handling multiple modalities. Previous GPT-4 versions used multiple single purpose models (voice to text, text to voice, text to image) and created a fragmented experience of switching between models for different tasks.