Last refreshed 2026-05-10. Next refresh: weekly.
Why use GPT-3.5 Turbo on OpenAI API?
OpenAI API offers GPT-3.5 Turbo with pay-as-you-go pricing at $0.50/1M 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 across 5 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-turboRequest 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",
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 Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Azure OpenAI | $0.50 | $1.50 |
| OpenAI API | $0.50 | $1.50 |
| Salesforce Einstein Generative AI | — | — |
| OpenRouter | $0.50 | $1.50 |
| Replicate API | $0.50 | $1.50 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.50 |
| Output tokens | $1.50 |
Capabilities
About GPT-3.5 Turbo
GPT-3.5 Turbo is an advanced language model developed by OpenAI, showcasing significant advancements over GPT-3 and GPT-3.5. As the engine behind the popular ChatGPT application, it excels in tasks like text generation, translation, question answering, summarization, and code generation. This model employs Reinforcement Learning from Human Feedback (RLHF) to enhance accuracy and produce policy-optimized responses. Despite its prowess, it has a knowledge cutoff of September 2021 and can demonstrate biases from its training data. Occasionally, it may generate incorrect or nonsensical content, known as "hallucination," and is sensitive to input phrasing variations. Additionally, the free version may experience slowdowns due to high demand. Nevertheless, GPT-3.5 Turbo remains a powerful tool with versatile applications across numerous fields.
FAQ
What does GPT-3.5 Turbo cost on OpenAI API?
On OpenAI API, GPT-3.5 Turbo costs $0.5 per 1M input tokens and $1.5 per 1M output tokens.
What is the context window for GPT-3.5 Turbo on OpenAI API?
GPT-3.5 Turbo supports a 16,000 token context window on OpenAI API.
How does OpenAI API compare to other GPT-3.5 Turbo providers?
GPT-3.5 Turbo is available from 5 providers. The cheapest input pricing is $0.5/1M tokens from Azure OpenAI.
Who created GPT-3.5 Turbo?
GPT-3.5 Turbo was created by OpenAI as part of the GPT-3.5 model family.
Is GPT-3.5 Turbo open source?
GPT-3.5 Turbo is not open source; the seed data lists it as proprietary.