Grafana
Open observability — dashboards for metrics, logs, and traces.
AGPL-3.0 platform with 100+ data source integrations, multi-condition alerting, plugin marketplace, and Dashboard as Code. Self-host or Grafana Cloud.
Helicone
LLM observability and AI gateway — one-line integration for logging, cost tracking, prompt management, and rate limiting
Build reliable AI apps with comprehensive observability
Laminar
Agent observability and evaluation platform — signal alerts, trace debugging, and automated evals for LLM products
Open-source LLM observability platform — trace debugging, signal alerts, and automated evaluations for AI products. Alternative to LangSmith and Helicone.
OpenLIT
OpenTelemetry-native LLM observability — tracing, evaluation, prompt management, and cost tracking
Monitor, debug, and scale LLM applications with ease
Compare Datadog alternatives
Datadog is a proprietary, cloud-hosted observability platform for metrics, logs, and traces. It's comprehensive but pricing is usage-based across multiple dimensions (hosts, log volume, custom metrics), which can scale unpredictably as your infrastructure grows.
If you're monitoring general infrastructure, Grafana (paired with tools like Prometheus or Loki) is the closest Datadog replacement. If you're specifically monitoring LLM/AI workloads, Helicone, Laminar, and OpenLIT are a better fit — they trace and evaluate AI applications specifically, which general tools like Grafana don't cover out of the box.
FAQ
Is there a free, open-source alternative to Datadog?
Yes. Grafana, Helicone, Laminar, and OpenLIT are all open source and self-hostable at no software licensing cost.
What's the best open-source alternative to Datadog?
Grafana is the best fit for general infrastructure observability — dashboards, metrics, logs, and traces from multiple data sources.
Is there an open-source Datadog alternative for monitoring AI/LLM applications?
Yes. Helicone, Laminar, and OpenLIT are built specifically for tracing and evaluating LLM and AI agent applications.
What are the top open-source alternatives to Datadog?
Browse all open-source alternatives to Datadog above, or explore the full Analytics & Data category for more options.