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    • © 2025 OpenRouter, Inc

    OpenAI: ChatGPT-4o

    openai/chatgpt-4o-latest

    Created Aug 14, 2024128,000 context
    $5/M input tokens$15/M output tokens

    OpenAI ChatGPT 4o is continually updated by OpenAI to point to the current version of GPT-4o used by ChatGPT. It therefore differs slightly from the API version of GPT-4o in that it has additional RLHF. It is intended for research and evaluation.

    OpenAI notes that this model is not suited for production use-cases as it may be removed or redirected to another model in the future.

    Recent activity on ChatGPT-4o

    Total usage per day on OpenRouter

    Prompt
    126M
    Completion
    20.2M

    Prompt tokens measure input size. Reasoning tokens show internal thinking before a response. Completion tokens reflect total output length.