🚀 Feature: Enable token usage collection by default for standalone instrumentation

Which component is this feature for?

All Packages

🔖 Feature description

Related to https://github.com/traceloop/openllmetry/pull/3142#issuecomment-3077362491

Enable enrich_token_usage=True by default so standalone packages like opentelemetry-instrumentation-openai can collect token usage in streaming requests without explicit configuration.

Current Behavior

Standalone: OpenAIInstrumentor().instrument() → No token usage collected (default enrich_token_usage=False)
Traceloop SDK: Traceloop.init() → Token usage collected (explicitly sets enrich_token_usage=True)

Requested Behavior

Standalone instrumentation should collect token usage by default, matching traceloop-sdk behavior.

Proposed Solution

Change default parameter in OpenAIInstrumentor.init() or control this param using environment variables.

enrich_token_usage: bool = True

🎤 Why is this feature needed ?

Better observability out-of-the-box

✌️ How do you aim to achieve this?

Consistent user experience across usage patterns

🔄️ Additional Information

No response

👀 Have you spent some time to check if this feature request has been raised before?

• I checked and didn't find similar issue

Are you willing to submit PR?

Yes I am willing to submit a PR!

Start at OpenAIInstrumentor.init() and compare standalone instrumentation with the Traceloop SDK behavior described in the issue. Update the default or environment-variable handling so enrich_token_usage is enabled for standalone use, then verify that streaming requests collect token usage without explicit configuration.