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Using Requesty with the OpenAI SDK is as simple as changing a single line of code. By pointing the base_url to the Requesty router, you can take advantage of all of Requesty’s features without changing the rest of your code. This simple change unlocks powerful features, such as: All of this is available while maintaining the familiar OpenAI SDK interface. With Requesty, you can access over 250+ models from various providers. To specify a model, you must include the provider prefix, like openai/gpt-4.1-mini or anthropic/claude-sonnet-4-20250514. You can find the full list of available models in the Model Library.

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Python

To use the OpenAI Python client with Requesty, simply set the base_url when initializing the client. 
import openai

# Safely load your API key from environment variables or a secret manager
requesty_api_key = "YOUR_REQUESTY_API_KEY"

client = openai.OpenAI(
    api_key=requesty_api_key,
    base_url="https://router.requesty.ai/v1",
)

# Now you can use the client as you normally would
# All requests will be routed through Requesty
response = client.chat.completions.create(
    model="openai/gpt-4o",
    messages=[{"role": "user", "content": "Hello, world!"}],
)

print(response.choices[0].message.content)

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Javascript

The same principle applies to the OpenAI Javascript client. Set the baseURL during initialization. 
import OpenAI from 'openai';

const client = new OpenAI({
  // Safely load your API key from environment variables
  apiKey: "YOUR_REQUESTY_API_KEY",
  baseURL: "https://router.requesty.ai/v1",
});

async function main() {
  // Now you can use the client as you normally would
  // All requests will be routed through Requesty
  const response = await client.chat.completions.create({
    model: "openai/gpt-4o",
    messages: [{ role: "user", content: "Hello, world!" }],
  });

  console.log(response.choices[0].message.content);
}

main();