LLM Observability Tool

The real user prompts we captured this ad appearing on inside ChatGPT.

• best observability stack for AutoGen and LangGraph agents that gives per-span latency, token cost, and replay without sending data to a vendor

• best open source observability stack 2026 to replace new relic — can prometheus mimir loki tempo and grafana really cover apm logs metrics and traces without gaps

• can we use cloudflare analytics to monitor our edge workers or do we still need datadog

• cast ai pricing for kubernetes cost optimization

• grafana vs datadog vs honeycomb for incident debugging

• how do i set up an llm as judge pipeline with deepeval to catch hallucinations before deploying my agent

• Langfuse vs Helicone pricing for around 50M tokens a month — which is actually cheaper once you add trace storage and seat fees

• LangSmith vs Langfuse vs Arize Phoenix for tracing multi-agent LangGraph workflows in production — which has the best token cost breakdown

• my app has latency spikes how do i find the root cause fast

• my kubernetes pods keep getting evicted how do i debug this

• our datadog bill jumped 3x in six months, what are the best ways to cut custom metric and log ingestion costs without breaking our alerts

• splunk vs datadog vs sumo logic for centralized log management at scale