GPT-3.5 Turbo 16k
Pick up to 3 models · pricing, context and capabilities · simulate your product cost
Data updated on September 30, 2026· 217 models
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.
- Reasoning estimated
- Speed estimated
- Input
- Output
- Context
- 16 K tokens
- Max output
- 4 K
- Input, $ per 1M tokens
- $3.00
- Output, $ per 1M tokens
- $4.00
- Cache read, $ per 1M
- —
- Batch (input / output)
- —
- Tool calling
- Yes
- Released
- 08/28/2023
- Knowledge cutoff
- —
- API id
- openai/gpt-3.5-turbo-16k
Summary from the data
GPT-3.5 Turbo 16k is a OpenAI model available by API since 08/28/2023. It costs $3.00 per million input tokens and $4.00 per million output tokens, accepts 16 K tokens of context and generates up to 4 K tokens per response. Input: text; output: text. It has no reasoning mode. It supports tool calling. With 10,000 requests a month of 1,500 input and 400 output tokens it would cost about $61.00 a month.
Compare GPT-3.5 Turbo 16k with…
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Frequently asked questions
How much does GPT-3.5 Turbo 16k cost per million tokens?
GPT-3.5 Turbo 16k costs $3.00 per million input tokens and $4.00 per million output tokens (USD, list price). Cache read: not published. Batch tier: not published.
What context window does GPT-3.5 Turbo 16k have?
GPT-3.5 Turbo 16k accepts 16 K tokens of context per request and generates up to 4 K tokens per response.
Does GPT-3.5 Turbo 16k accept images, audio or files?
Input: text. Output: text.
Does GPT-3.5 Turbo 16k have a reasoning mode and tool calling?
It has no reasoning mode. It supports tool calling.
When was GPT-3.5 Turbo 16k released and what is its knowledge cutoff?
GPT-3.5 Turbo 16k has been available by API since 08/28/2023. Knowledge cutoff: not published.
What would an app built on GPT-3.5 Turbo 16k cost?
With 10,000 requests a month of 1,500 input and 400 output tokens, GPT-3.5 Turbo 16k would cost about $61.00 a month at list price, without cache or batch discounts.
What is the API id of GPT-3.5 Turbo 16k?
The id is openai/gpt-3.5-turbo-16k. It is the name passed in the model parameter of the API (or on OpenRouter).
Where do the prices come from and how often are they updated?
From the public catalogs of OpenRouter, models.dev and LiteLLM, which publish each provider's list prices. They sync once a day and the last update date is shown above the comparison.
What does price per million tokens mean?
It is what the provider charges per million tokens you send (input) or the model generates (output). A token is roughly 4 characters. Output almost always costs more than input.
Sources: OpenRouter, models.dev and LiteLLM. Prices in USD per million tokens, list price, no volume discounts. Prompt tokens are an estimate; each provider's tokenizer may differ.