Datadog LLM Observability Alternative · Purpose-built

# AgentLens vs Datadog
LLM visibility without the enterprise contract.

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.

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Quick Comparison

## Feature-by-feature

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.

When to choose what

## Honest recommendation

### Choose Datadog if…

- You already run Datadog APM across your whole stack
- You want one pane of glass for infra + LLM
- You have enterprise budget and OTel maturity
- You need 24/7 enterprise support contracts

### Choose AgentLens if…

- You're a focused AI team, not a large infra org
- You want LLM visibility without APM vendor lock-in
- You want predictable €299-€999/mo pricing
- You want to self-host on a single VPS
- You want quality + hallucination evals on day one

FAQ

## Common questions

Why would I use AgentLens instead of Datadog 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.

Can I run AgentLens alongside Datadog?

Yes. Many teams keep Datadog for infra/APM and use AgentLens specifically for LLM observability. The SDKs do not conflict.

Does AgentLens support OpenTelemetry?

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.

How does pricing compare?

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.

Can I export LLM data to Datadog?

Yes, via webhook/API. Teams often keep their Datadog dashboards for infra and use AgentLens as the specialized LLM layer.

### Get LLM visibility for less than €10/day

15-minute call. We'll map your current Datadog LLM setup to AgentLens.

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