I Tested 6 LLM Monitoring Tools So You Do Not Have To

I tested 6 LLM monitoring tools over 2 weeks. Here is what I found. The Tools Tested DriftWatch (my own, so I am biased) Helicone Portkey Athina Braintrust Custom (built-in logging) What I Was Looking For Drift detection accuracy Cost tracking granularity Latency monitoring Ease of integration Alerting options Price Results DriftWatch Strengths: Purpose-built for drift detection, automated weekly checks, affordable. Weaknesses: Newer, smaller community. Price: From £9.90/mo Helicone Strengths: Great API tracking, open source, good visualizations. Weaknesses: No dedicated drift detection, more focused on generic API monitoring. Price: Free tier + $50/mo Pro Portkey Strengths: Comprehensive observability, good alerting, multi-model support. Weaknesses: Complex setup, expensive for small teams. Price: Free tier + $100/mo Pro Athina Strengths: Good for LLM evaluation, nice UI. Weaknesses: No drift detection specifically, evaluation-focused. Price: $50/mo+ Braintrust Strengths: Good for eva