> ## Documentation Index
> Fetch the complete documentation index at: https://arize-ax.mintlify.dev/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# OpenTelemetry Tracing

> Instrument LLM applications with OpenTelemetry-based tracing. Capture calls to LLMs, retrievers, agents, and tools automatically.

Instrument your LLM applications with OpenTelemetry-based tracing. Capture every call to LLMs, retrievers, agents, and tools automatically.

## Quick Start

```python theme={null}
from arize.otel import register
from openinference.instrumentation.openai import OpenAIInstrumentor

# Setup OpenTelemetry
tracer_provider = register(
    space_id="your-space-id",
    api_key="your-api-key",
    project_name="my-llm-app",
)

# Instrument your LLM library
OpenAIInstrumentor().instrument(tracer_provider=tracer_provider)

# Your LLM calls are now automatically traced
```

**Supported frameworks:** OpenAI, LangChain, LlamaIndex, Anthropic, Bedrock, and more through OpenInference instrumentors.

**Learn more:** [Tracing Documentation](https://arize.com/docs/ax/observe/tracing)