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Connect the DeepInfra engine for cheap DeepSeek model execution via API

Use open-source DeepSeek models in your code at a significantly lower price than OpenAI, simply by changing base_url

1.Go to the DeepInfra platform, sign up, and create an API key in the Dashboard section. Copy it.
DeepInfra is an inference cloud that provides an OpenAI-compatible API. If the service is unavailable in your region, use a VPN to register.
DeepInfra ↗
2.Open the terminal and install the OpenAI library for Python, if it is not already installed.
The command works on any OS with Python 3 installed.
Terminal ↗
Prompt
```
pip install openai
```
What this prompt doesInstalling the official openai library, which will be used to make requests to DeepInfra.
3.Create a file script.py and paste the code below. Replace [YOUR_DEEPINFRA_API_KEY] with your key from step 1, and [Your prompt here] with your AI prompt text. Run the script.
The code uses the DeepInfra base_url, so all OpenAI SDK features work without changes.
Python ↗
Prompt
```
import os
from openai import OpenAI

client = OpenAI(
  api_key='[YOUR_DEEPINFRA_API_KEY]',
  base_url='https://api.deepinfra.com/v1/openai',
)

response = client.chat.completions.create(
  model='deepseek-ai/DeepSeek-V4-Flash-0731',
  messages=[{'role': 'user', 'content': '[Your prompt here]'}],
)
print(response.choices[0].message.content)
```
What this prompt doesThe script sends a request to the DeepSeek V4.1 Flash model. Replace the placeholders [YOUR_DEEPINFRA_API_KEY] and [Your prompt here] with your values.

💰 What it costs to followprices as of 2026-10

APIDeepInfra APIPay only for tokens actually used (per token), with no minimum payments or idle fees. New users often get free credits for testing.

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