# GPT-3.5 Turbo Instruct API Pricing

As of October 10, 2026, GPT-3.5 Turbo Instruct costs $1.50 per 1M input tokens and $2.00 per 1M output tokens on OpenAI. It has an 8,192-token context window and returns up to 4,096 tokens per response.

- Page: https://models.litellm.ai/models/gpt-3.5-turbo-instruct
- Lab: OpenAI
- LiteLLM model name: `gpt-3.5-turbo-instruct`
- Context window: 8,192 tokens
- Max output: 4,096 tokens
- Deprecation date: September 28, 2026
- Prices updated: October 10, 2026

## Pricing by provider

Token prices in USD per 1M tokens.

| Provider | Model name | Input | Output | Cache read | Per image | Per second | Context |
|---|---|---|---|---|---|---|---|
| OpenAI | `gpt-3.5-turbo-instruct` | $1.50 | $2.00 | – | – | – | 8K |
| OpenAI (snapshot 0914) | `gpt-3.5-turbo-instruct-0914` | $1.50 | $2.00 | – | – | – | 8K |
| Azure Text (snapshot 0914) | `azure/gpt-3.5-turbo-instruct-0914` | $1.50 | $2.00 | – | – | – | 4K |
| Vercel AI Gateway | `vercel_ai_gateway/openai/gpt-3.5-turbo-instruct` | $1.50 | $2.00 | – | – | – | 8K |

## Cost examples

1,000 requests with 2,000 input and 500 output tokens each:

- OpenAI: $4.00
- Azure Text: $4.00
- Vercel AI Gateway: $4.00

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="gpt-3.5-turbo-instruct",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## FAQ

### How much does GPT-3.5 Turbo Instruct cost?

GPT-3.5 Turbo Instruct costs $1.50 per 1M input tokens and $2.00 per 1M output tokens on OpenAI.

### What is the context window of GPT-3.5 Turbo Instruct?

GPT-3.5 Turbo Instruct has an 8,192-token context window and returns up to 4,096 tokens per response.

### Which providers offer GPT-3.5 Turbo Instruct?

GPT-3.5 Turbo Instruct is available from 3 providers through LiteLLM: OpenAI, Azure Text and Vercel AI Gateway.

### How do I call GPT-3.5 Turbo Instruct with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="gpt-3.5-turbo-instruct", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/completions from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.

### Is GPT-3.5 Turbo Instruct being deprecated?

OpenAI deprecated gpt-3.5-turbo-instruct on September 28, 2026.

Source: LiteLLM model price file, https://github.com/BerriAI/litellm/blob/main/model_prices_and_context_window.json