OpenAI

AISDK includes first-class support for the OpenAI.

Installation

Enable the OpenAI provider feature:

cargo add aisdk --features openai

This installs AISDK with the OpenAI provider enabled.

Once you have enabled the OpenAI provider, you can use all aisdk features with it.

Quick Start

Create an OpenAI provider instance with default settings:

use aisdk::providers::openai::OpenAI;

let openai = OpenAI::new("gpt-5");

This initializes the provider with:

Model: "gpt-5"
API key from environment (if set with OPENAI_API_KEY)
OpenAI’s default base URL

Basic Text Generation

use aisdk::{
    core::LanguageModelRequest,
    providers::openai::OpenAI,
};

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {

    // Initialize provider with default settings.
    let openai = OpenAI::new("gpt-5");

    let response = LanguageModelRequest::builder()
        .model(openai)
        .prompt("Write a short poem about Rust.")
        .build()
        .generate_text()
        .await?
        .text()?;

    println!("Model output: {}", response);
    Ok(())
}

Provider Settings

You can customize provider configuration using OpenAI::builder()

API Key

let openai = OpenAI::builder()
    .api_key("your-api-key")
    .build()?;

If not specified, AISDK uses the OPENAI_API_KEY environment variable.

Base URL

Useful when routing through a proxy, gateway, or self-hosted compatible endpoint.

let openai = OpenAI::builder()
    .base_url("https://api.openai.com/v1")
    .build()?;

Provider Name

For logging, analytics, and observability.

let openai = OpenAI::builder()
    .provider_name("OpenAI")
    .build()?;

Model Name

Set a default model for all requests using this provider instance:

let openai = OpenAI::builder()
    .model_name("gpt-4o")
    .build()?;

Full Custom Configuration Example

let openai = OpenAI::builder()
    .api_key("your-api-key")
    .base_url("https://api.openai.com/v1")
    .provider_name("OpenAI")
    .model_name("gpt-4o")
    .build()?;

OpenAI

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