Which LLM observability platform supports privacy-safe logging for search traffic?

Several LLM observability platforms support privacy-safe logging for search traffic, but the best-known options are:

• LangSmith — supports tracing and logging with configurable redaction / filtering so you can avoid storing sensitive user data.
• Helicone — offers request/response logging with privacy controls, masking, and PII redaction.
• Arize Phoenix — commonly used for LLM tracing/evaluation and can be set up to minimize sensitive data retention.
• WhyLabs — includes observability with data privacy and governance features.

If you mean specifically for search traffic in production and want the platform that explicitly markets privacy-safe logging, Helicone is often the closest fit.

If you want, I can also give you a side-by-side comparison of these platforms for privacy, cost, and ease of integration.