Installation

git clone https://github.com/alibaba/loongsuite-python.git
cd loongsuite-python
pip install ./instrumentation-loongsuite/loongsuite-instrumentation-litellm

Configuration

The instrumentation can be enabled/disabled using environment variables:

• ENABLE_LITELLM_INSTRUMENTOR: Enable/disable instrumentation (default: true)

• OTEL_SEMCONV_STABILITY_OPT_IN: Set to gen_ai_latest_experimental to enable GenAI semantic conventions

• OTEL_INSTRUMENTATION_GENAI_CAPTURE_MESSAGE_CONTENT: Set to NO_CONTENT, SPAN_ONLY, EVENT_ONLY, or SPAN_AND_EVENT

Usage

from opentelemetry.instrumentation.litellm import LiteLLMInstrumentor
import litellm

# Instrument LiteLLM
LiteLLMInstrumentor().instrument()

# Use LiteLLM as normal
response = litellm.completion(
    model="gpt-3.5-turbo",
    messages=[{"role": "user", "content": "Hello!"}]
)

Local OTLP smoke

The examples/litellm_genai_smoke.py script sends real LiteLLM traffic for:

• non-streaming completion

• streaming completion

• concurrent async completion calls

Set LITELLM_SMOKE_MODE to non_streaming, streaming, concurrent, or all (default) to run a subset.

Example with a local otel-gui OTLP endpoint:

export DASHSCOPE_API_KEY=...
export OTEL_EXPORTER_OTLP_ENDPOINT=http://127.0.0.1:4318
export OTEL_EXPORTER_OTLP_PROTOCOL=http/protobuf
export OTEL_SEMCONV_STABILITY_OPT_IN=gen_ai_latest_experimental
export OTEL_INSTRUMENTATION_GENAI_CAPTURE_MESSAGE_CONTENT=SPAN_ONLY
export OTEL_SERVICE_NAME=loongsuite-litellm-smoke

loongsuite-instrument python \
    instrumentation-loongsuite/loongsuite-instrumentation-litellm/examples/litellm_genai_smoke.py

Features

This instrumentation automatically captures:

• LLM completion calls (sync and async)

• Streaming completions

• Embedding calls

• Retry mechanisms

• Tool/function calls

• Provider inference from known OpenAI-compatible base URLs, custom providers, and model names

• Streaming time-to-first-token, including reasoning/thinking deltas

• Multi-choice streaming outputs and tool-call delta accumulation

• Request and response metadata

• Token usage

• Model information

The instrumentation follows OpenTelemetry semantic conventions for GenAI operations.

References

• OpenTelemetry LiteLLM Instrumentation

• OpenTelemetry Project

• LiteLLM Documentation