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    • © 2025 OpenRouter, Inc

    OpenAI: GPT-3.5 Turbo 16k

    openai/gpt-3.5-turbo-16k

    Created Aug 28, 202316,385 context
    $3/M input tokens$4/M output tokens

    This model offers four times the context length of gpt-3.5-turbo, allowing it to support approximately 20 pages of text in a single request at a higher cost. Training data: up to Sep 2021.

    Recent activity on GPT-3.5 Turbo 16k

    Total usage per day on OpenRouter

    Prompt
    2.73M
    Completion
    413K

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