GPT-3.5 Turbo Instruct
Pick up to 3 models · pricing, context and capabilities · simulate your product cost
Data updated on September 30, 2026· 217 models
This model is a variant of GPT-3.5 Turbo tuned for instructional prompts and omitting chat-related optimizations.
- Reasoning estimated
- Speed estimated
- Input
- Output
- Context
- 4 K tokens
- Max output
- 4 K
- Input, $ per 1M tokens
- $1.50
- Output, $ per 1M tokens
- $2.00
- Cache read, $ per 1M
- —
- Batch (input / output)
- —
- Tool calling
- No
- Released
- 09/21/2023
- Knowledge cutoff
- 2021-08
- API id
- openai/gpt-3.5-turbo-instruct
Summary from the data
GPT-3.5 Turbo Instruct is a OpenAI model available by API since 09/21/2023. It costs $1.50 per million input tokens and $2.00 per million output tokens, accepts 4 K tokens of context and generates up to 4 K tokens per response. Input: text; output: text. It has no reasoning mode. It does not support tool calling. With 10,000 requests a month of 1,500 input and 400 output tokens it would cost about $30.50 a month.
Compare GPT-3.5 Turbo Instruct with…
What would your product cost?
Estimate the monthly cost with your app's real volume. List prices, no cache or batch discounts.
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- 6Qwen3.5-Flash Qwen$2.02
Frequently asked questions
How much does GPT-3.5 Turbo Instruct cost per million tokens?
GPT-3.5 Turbo Instruct costs $1.50 per million input tokens and $2.00 per million output tokens (USD, list price). Cache read: not published. Batch tier: not published.
What context window does GPT-3.5 Turbo Instruct have?
GPT-3.5 Turbo Instruct accepts 4 K tokens of context per request and generates up to 4 K tokens per response.
Does GPT-3.5 Turbo Instruct accept images, audio or files?
Input: text. Output: text.
Does GPT-3.5 Turbo Instruct have a reasoning mode and tool calling?
It has no reasoning mode. It does not support tool calling.
When was GPT-3.5 Turbo Instruct released and what is its knowledge cutoff?
GPT-3.5 Turbo Instruct has been available by API since 09/21/2023. Knowledge cutoff: 2021-08.
What would an app built on GPT-3.5 Turbo Instruct cost?
With 10,000 requests a month of 1,500 input and 400 output tokens, GPT-3.5 Turbo Instruct would cost about $30.50 a month at list price, without cache or batch discounts.
What is the API id of GPT-3.5 Turbo Instruct?
The id is openai/gpt-3.5-turbo-instruct. 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.