Respan
LLM tracing, evals, and gateway
The top alternatives to Sentrial in the Observability, Prompts & Evals space, compared on features, pricing, and what they're best at.
Updated March 27, 2026
Sentrial is a production monitoring platform purpose-built for AI agents — positioned as "Datadog for Agent Reliability." Part of YC W2026, it was founded by Neel Sharma (CEO, UC Berkeley CS, ex-Sense) and Anay Shukla (UC Berkeley CS, deployed DevOps agents at Accenture).
One platform for routing, observability, tracing, and evals across every LLM provider.
Respan lets you trace LLM and agent calls across any model or framework, A/B test prompts on production traffic, and route requests across 500+ models through one gateway.