Datadog LLM Observability is completely free with 8 features included. No paid tiers offered, making it perfect for budget-conscious users.
LLM Observability can work standalone but provides the most value when integrated with Datadog APM, Infrastructure Monitoring, or RUM. Many key features like infrastructure correlation require additional Datadog products.
Datadog bills based on the count of LLM spans ingested. Pricing is not publicly available and requires contact with Datadog sales. One documented case showed automatic activation at $120/day when LLM spans were detected.
Datadog supports major providers including OpenAI, Anthropic, AWS Bedrock, and Google Cloud AI. Popular frameworks like LangChain, LlamaIndex, and custom implementations can be instrumented through the SDK.
Datadog excels at infrastructure correlation and enterprise features but costs more than specialized tools like Langfuse, LangSmith, or Lunary. Choose Datadog if you need unified observability across AI and traditional infrastructure.
Yes, Datadog LLM Observability is designed for complex agentic workflows. It traces multi-step processes, tool usage, and intermediate decisions across distributed AI agent architectures.
It's completely free — no credit card required.
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Last verified March 2026