Datadog LLM Observability comparisons

Freemium#2 of 26 in Llm Monitoring

Datadog LLM Observability is compared head-to-head with LangSmith, Langfuse and Arize AX and more: 7 head-to-heads in Llm Monitoring, each with the specs and prices we checked.

9.1/10★★★★★Editor score

Visit Datadog

Datadog LLM Observability9.1 Visit Datadog

Datadog LLM Observability head-to-head

• Datadog LLM Observability vs LangSmith
• Datadog LLM Observability vs Langfuse
• Datadog LLM Observability vs Arize AX
• Datadog LLM Observability vs W&B Weave
• Datadog LLM Observability vs Opik
• Datadog LLM Observability vs Arize Phoenix
• Datadog LLM Observability vs Helicone

Datadog LLM Observability vs each of them

#	Tool	Free plan	Paid from	LLM tracing	Evaluation support	Deployment options	Score
2	Datadog LLM Observability	Yes	$160/mo	Yes	Yes	Cloud	9.1
1	LangSmith	Yes	$39/seat/mo	Yes	Yes	Both	9.3
3	Langfuse	Yes	$29/mo	Yes	Yes	Both	8.9
4	Arize AX	Yes	$50/mo	Yes	Yes	Both	8.8
5	W&B Weave	Yes	$60/mo	Yes	Yes	Both	8.7
6	Opik	Yes	$19/mo	Yes	Yes	Both	8.6
7	Arize Phoenix	Yes	Free	Yes	Yes	Both	8.5
8	Helicone	Yes	$79/mo	Yes	Yes	Both	8.4

Compare Datadog LLM Observability with any LLM monitoring tool

These are the matchups our editors wrote up. The compare tool pairs Datadog LLM Observability with any other product in Llm Monitoring — and up to four at once — from the same checked specs.

Compare Datadog LLM Observability with any tool side by side →

Every llm monitoring head-to-head →

Our full Datadog LLM Observability verdict, pricing and fact sheet →

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Compared by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated 7 Oct 2026 · How we research and update