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Fetch the complete documentation index at: https://langwatch.ai/docs/llms.txt

Use this file to discover all available pages before exploring further.

LangWatch supports tracing Azure OpenAI API calls using the same otelopenai middleware used for OpenAI. Configure the client to point to your Azure endpoint.

​
Installation

go get github.com/langwatch/langwatch/sdk-go github.com/openai/openai-go

​
Usage

Set LANGWATCH_API_KEY, AZURE_OPENAI_API_KEY, and AZURE_OPENAI_ENDPOINT environment variables before running.
package main

import (
	"context"
	"log"
	"os"

	langwatch "github.com/langwatch/langwatch/sdk-go"
	otelopenai "github.com/langwatch/langwatch/sdk-go/instrumentation/openai"
	"github.com/openai/openai-go"
	oaioption "github.com/openai/openai-go/option"
	"go.opentelemetry.io/otel"
	sdktrace "go.opentelemetry.io/otel/sdk/trace"
)

func main() {
	ctx := context.Background()

	// Set up LangWatch exporter
	exporter, err := langwatch.NewDefaultExporter(ctx)
	if err != nil {
		log.Fatalf("failed to create exporter: %v", err)
	}
	tp := sdktrace.NewTracerProvider(sdktrace.WithBatcher(exporter))
	otel.SetTracerProvider(tp)
	defer tp.Shutdown(ctx) // Critical: ensures traces are flushed

	// Create Azure OpenAI client
	client := openai.NewClient(
		oaioption.WithAPIKey(os.Getenv("AZURE_OPENAI_API_KEY")),
		oaioption.WithBaseURL(os.Getenv("AZURE_OPENAI_ENDPOINT")),
		oaioption.WithMiddleware(otelopenai.Middleware("my-app",
			otelopenai.WithCaptureInput(),
			otelopenai.WithCaptureOutput(),
			otelopenai.WithGenAISystem("azure"),
		)),
	)

	response, err := client.Chat.Completions.New(ctx, openai.ChatCompletionNewParams{
		Model: openai.ChatModelGPT5,
		Messages: []openai.ChatCompletionMessageParamUnion{
			openai.SystemMessage("You are a helpful assistant."),
			openai.UserMessage("Hello, Azure OpenAI!"),
		},
	})
	if err != nil {
		log.Fatalf("Chat completion failed: %v", err)
	}

	log.Printf("Response: %s", response.Choices[0].Message.Content)
}
Set AZURE_OPENAI_ENDPOINT to your Azure OpenAI resource endpoint URL (e.g., https://your-resource.openai.azure.com/openai/deployments/your-deployment).
The defer tp.Shutdown(ctx) call is essential. Without it, traces buffered in memory will be lost when your application exits.