chat-rs: Rust를 위한 멀티 프로바이더 LLM 프레임워크

let client = OpenAIBuilder::new().with_model("gpt-4o-mini").build();
let mut chat = ChatBuilder::new().with_model(client).build();
let mut messages = messages::from_user(vec!["Hey there!"]);
let res = chat.complete(&mut messages).await?;
println!("{:?}", res.content);

#[tool]
/// Looks up the current weather for a given city.
async fn get_weather(city: String) -> String {
    format!("The weather in {} is sunny, 22°C", city)
}

let router = RouterBuilder::new()
    .add_provider(gemini)
    .add_provider(claude)
    .circuit_breaker(CircuitBreakerConfig {
        failure_threshold: 3,
        recovery_timeout: std::time::Duration::from_secs(30),
    })
    .build();