Datadog LLM Observability is part of a full-stack APM platform — powerful, but priced and scoped for enterprise. AgentLens is built for the LLM stack specifically: 2-line setup, flat pricing, self-hostable on a single VPS.
| Capability | AgentLens | Datadog LLM Obs. |
|---|---|---|
| Purpose-built for LLM stack | ✓ | Module of full APM |
| Setup time | ~5 min (2 lines) | APM agent + OTel config |
| Self-hostable | ✓ MIT | ✗ SaaS only |
| Automatic quality scoring | ✓ zero config | Manual eval setup |
| Hallucination detection built-in | ✓ | Custom monitors required |
| Agent waterfall debugger | ✓ | ✓ |
| Infrastructure monitoring | ✗ not our focus | ✓ full APM |
| OpenTelemetry native | SDK today, OTel on roadmap | ✓ |
| EU data residency / GDPR DPA | ✓ Team plan+ | ✓ Enterprise |
| Pricing model | €299 / mo flat | Usage-based, enterprise APM |
Based on public Datadog documentation as of April 2026. Verify at datadoghq.com/product/llm-observability.
Datadog is a full-stack APM platform. Its LLM module is powerful but expensive, complex to set up, and priced around an enterprise APM contract. AgentLens is purpose-built for LLM teams, self-hostable, flat €299/mo.
Yes. Many teams keep Datadog for infra/APM and use AgentLens specifically for LLM observability. The SDKs do not conflict.
AgentLens currently uses its own SDK with 2-line setup. OTel export is on the roadmap. If OTel-native today is a hard requirement, Datadog is stronger.
Datadog LLM Observability is priced within their APM/enterprise model — typically thousands per month. AgentLens Starter is €299/mo flat for 1M calls, or free self-hosted.
Yes, via webhook/API. Teams often keep their Datadog dashboards for infra and use AgentLens as the specialized LLM layer.
15-minute call. We'll map your current Datadog LLM setup to AgentLens.