Last refreshed 2026-05-10. Next refresh: weekly.
Why use GPT-3.5 Turbo (Instruct) on OpenAI API?
OpenAI API offers GPT-3.5 Turbo (Instruct) with pay-as-you-go pricing at $1.50/1M input tokens. OpenAI is a leading AI research and deployment company dedicated to developing safe and beneficial artificial general intelligence (AGI) for humanity.
Compare GPT-3.5 Turbo (Instruct) across 4 providers to find the best fit for your use caseSetup recipe
Python + curlpip install openaiexport OPENAI_API_KEY=...import os
from openai import OpenAI
client = OpenAI() # reads OPENAI_API_KEY from env
response = client.chat.completions.create(gpt-3.5-turbo-instructRequest example
import os
from openai import OpenAI
client = OpenAI() # reads OPENAI_API_KEY from env
response = client.chat.completions.create(
model="gpt-3.5-turbo-instruct",
messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)Gotchas
- Use the model slug directly, e.g. "gpt-4o" or "gpt-4.1-mini".
- The examples expect OPENAI_API_KEY; rename it only if your application config maps the new variable.
Compare GPT-3.5 Turbo (Instruct) Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Azure OpenAI | $1.50 | $2.00 |
| OpenAI API | $1.50 | $2.00 |
| Salesforce Einstein Generative AI | — | — |
| OpenRouter | $1.50 | $2.00 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $1.50 |
| Output tokens | $2.00 |
Capabilities
About GPT-3.5 Turbo (Instruct)
GPT-3.5 Turbo Instruct by OpenAI is designed to excel in precise instruction following and task completion, focusing on accuracy and clarity over conversational abilities. It offers key enhancements like efficient instruction adherence, reduced hallucination, and lower toxicity compared to previous models. Compatible with legacy completion endpoints, it retains the speed and affordability of the standard GPT-3.5 Turbo model while using a 4K context window and training data up to September 2021. Not specifically built for chat, it still supports diverse tasks like question answering, text completion, and code generation, aiming to enhance AI usability with safer and more accurate interactions.
FAQ
What does GPT-3.5 Turbo (Instruct) cost on OpenAI API?
On OpenAI API, GPT-3.5 Turbo (Instruct) costs $1.5 per 1M input tokens and $2 per 1M output tokens.
What is the context window for GPT-3.5 Turbo (Instruct) on OpenAI API?
GPT-3.5 Turbo (Instruct) supports a 4,000 token context window on OpenAI API.
How does OpenAI API compare to other GPT-3.5 Turbo (Instruct) providers?
GPT-3.5 Turbo (Instruct) is available from 4 providers. The cheapest input pricing is $1.5/1M tokens from Azure OpenAI.
Who created GPT-3.5 Turbo (Instruct)?
GPT-3.5 Turbo (Instruct) was created by OpenAI as part of the GPT-3.5 model family.
Is GPT-3.5 Turbo (Instruct) open source?
GPT-3.5 Turbo (Instruct) is not open source; the seed data lists it as proprietary.