> ## 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.

# AutoGen

> Trace AutoGen multi-agent conversations with OpenInference and send spans to Arize AX for LLM observability.

[AutoGen](https://microsoft.github.io/autogen/) is Microsoft's framework for building multi-agent LLM applications — agents that converse with each other to solve tasks. Arize AX captures every AutoGen run — assistant turns, user-proxy auto-replies, and the underlying LLM calls — via the [`openinference-instrumentation-autogen`](https://github.com/Arize-ai/openinference/tree/main/python/instrumentation/openinference-instrumentation-autogen) package, paired with [`openinference-instrumentation-openai`](https://github.com/Arize-ai/openinference/tree/main/python/instrumentation/openinference-instrumentation-openai) for full visibility into each LLM call.

<CardGroup>
  <Card horizontal icon="https://storage.googleapis.com/arize-phoenix-assets/assets/images/phoenix-docs-images/gc.ico" href="https://colab.research.google.com/github/Arize-ai/phoenix/blob/main/tutorials/tracing/autogen_tutorial.ipynb" title="AutoGen Tracing Tutorial (Google Colab)" />
</CardGroup>

<Note>
  This guide covers the original AutoGen API (`autogen.AssistantAgent` / `UserProxyAgent` / `initiate_chat`). For the newer AgentChat API (`autogen-agentchat` package), see the [AutoGen AgentChat tracing guide](/ax/integrations/python-agent-frameworks/autogen/autogen-agentchat-tracing).
</Note>

## Prerequisites

* Python 3.10+
* An Arize AX account ([sign up](https://arize.com/sign-up/))
* An `OPENAI_API_KEY` from the [OpenAI Platform](https://platform.openai.com/api-keys)

## Launch Arize AX

1. Sign in to your [Arize AX account](https://app.arize.com/).
2. From **Space Settings**, copy your **Space ID** and **API Key**. You will set them as `ARIZE_SPACE_ID` and `ARIZE_API_KEY` below.

## Install

```bash theme={null}
pip install arize-otel \
  openinference-instrumentation-autogen \
  openinference-instrumentation-openai \
  autogen openai
```

## Configure credentials

```bash theme={null}
export ARIZE_SPACE_ID="<your-space-id>"
export ARIZE_API_KEY="<your-api-key>"
export ARIZE_PROJECT_NAME="autogen-tracing-example"
export OPENAI_API_KEY="<your-openai-api-key>"
```

## Setup tracing

```python theme={null}
# instrumentation.py
import os

from arize.otel import register
from openinference.instrumentation.autogen import AutogenInstrumentor
from openinference.instrumentation.openai import OpenAIInstrumentor

tracer_provider = register(
    space_id=os.environ["ARIZE_SPACE_ID"],
    api_key=os.environ["ARIZE_API_KEY"],
    project_name=os.environ["ARIZE_PROJECT_NAME"],
    set_global_tracer_provider=True,
)

OpenAIInstrumentor().instrument(tracer_provider=tracer_provider)
AutogenInstrumentor().instrument()
print("Arize AX tracing initialized for AutoGen.")
```

## Run AutoGen

```python theme={null}
# example.py

# Importing instrumentation first ensures tracing is set up
# before `autogen` is imported.
from instrumentation import tracer_provider

import autogen

# OpenAI client reads OPENAI_API_KEY from the environment.
config_list = [{"model": "gpt-5"}]

assistant = autogen.AssistantAgent(
    name="assistant",
    llm_config={"config_list": config_list},
)

user = autogen.UserProxyAgent(
    name="user",
    human_input_mode="NEVER",
    max_consecutive_auto_reply=1,
    code_execution_config=False,
    is_termination_msg=lambda m: "TERMINATE" in m.get("content", "").upper(),
)

result = user.initiate_chat(
    assistant,
    message=(
        "Why is the ocean salty? Answer in two sentences, "
        "then write TERMINATE on a new line."
    ),
)
print(result.summary)
```

### Expected output

```text wrap theme={null}
Arize AX tracing initialized for AutoGen.
The ocean is salty because rivers continuously dissolve mineral salts from rocks and soil and carry them to the sea, where they accumulate over millions of years. Water leaves the ocean through evaporation but the salts remain, steadily concentrating until reaching today's roughly 3.5% salinity.
```

## Verify in Arize AX

1. Open your Arize AX space and select project **`autogen-tracing-example`**.
2. You should see a new trace within \~30 seconds containing an `Autogen` parent span wrapping OpenAI `ChatCompletion` LLM child spans with the prompt, response, and token usage attached.
3. If no traces appear, see [Troubleshooting](#troubleshooting).

## Troubleshooting

* **No traces in Arize AX.** Confirm `ARIZE_SPACE_ID` and `ARIZE_API_KEY` are set in the same shell that runs `example.py`. Enable OpenTelemetry debug logs with `export OTEL_LOG_LEVEL=debug` and re-run.
* **AutoGen spans missing but OpenAI spans present.** `AutogenInstrumentor().instrument(...)` must run before any `autogen` import. Make sure `instrumentation.py` is the first import in your entry point.
* **`401` from OpenAI.** Verify `OPENAI_API_KEY` is set and has access to `gpt-5`. Swap for a model your key can call.
* **Conversation never terminates.** AutoGen's `UserProxyAgent` keeps replying until `max_consecutive_auto_reply` is reached or `is_termination_msg` returns `True`. Tighten the termination check or lower the cap.

## Resources

<CardGroup>
  <Card icon="book-open" href="https://microsoft.github.io/autogen/0.2/" title="AutoGen 0.2 Documentation" horizontal />

  <Card icon="terminal" href="https://github.com/Arize-ai/openinference/tree/main/python/instrumentation/openinference-instrumentation-autogen" title="OpenInference AutoGen Instrumentor" horizontal />

  <Card icon="code" href="/ax/integrations/python-agent-frameworks/autogen/autogen-agentchat-tracing" title="AutoGen AgentChat Tracing (newer API)" horizontal />
</CardGroup>