Brandwave

Arize Phoenix vs Datadog LLM Observability:Which is more popular?

In September 2026, Arize Phoenix had more branded searches than Datadog LLM Observability among LLM observability platforms worldwide. Arize Phoenix had about 13,200 branded searches, while Datadog LLM Observability had 880. Arize Phoenix made up 5.1% of all LLM observability platform searches we track, and Datadog LLM Observability accounted for 0.34%. When we asked ChatGPT and Google AI Overviews about LLM observability platforms, both Arize Phoenix and Datadog LLM Observability appeared in all five answers. Arize Phoenix was mentioned before Datadog LLM Observability in four out of five answers.

Among LLM observability platforms worldwide in September 2026

Who do people search for more?

Arize Phoenix, about 15 searches for every 1 for Datadog LLM Observability

Arize Phoenix 13.2K searchesDatadog LLM Observability 880 searches

Who does AI mention more?

Both are mentioned in every answer we collected.

Arize Phoenix in 5 of 5Datadog LLM Observability in 5 of 5

Who does AI recommend more?

Arize Phoenix, named ahead of Datadog LLM Observability in 4 of 5 answers

Arize Phoenix first in 4Datadog LLM Observability first in 1

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Top LLM observability platforms in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, both Arize Phoenix and Datadog LLM Observability showed up in all five answers. Arize Phoenix was listed before Datadog LLM Observability in four of them.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. Langfuse1st
  2. LangSmith2nd
  3. Arize Phoenix3rd
  4. Braintrust4th
  5. Datadog LLM Observability5th
  6. Helicone6th
  7. Lunary7th
  8. Weights & Biases8th

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • Langfuse5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • LangSmith5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Arize Phoenix5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Datadog LLM Observability5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Braintrust3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Helicone2 of 5Named in 0 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Lunary2 of 5Named in 0 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Weights & Biases1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers

See every answer about LLM observability platforms

5 answers

Brands are shown in the order each answer named them. The survey took place in the United States on October 21, 2026.

Is Arize Phoenix or Datadog LLM Observability more popular in search?

This chart shows how often people search Google for Arize Phoenix and Datadog LLM Observability by name. Each line represents a brand's share of searches for all eight LLM observability platforms we track, month by month, from English-language searches worldwide.

Arize Phoenix and Datadog LLM Observability among LLM observability platforms worldwide, by month

Share of searches by month for Arize Phoenix, Datadog LLM Observability. The figures are in the table below the chart.

View monthly share of searches table
MonthLangfuseLangSmithWeights & BiasesArize PhoenixHeliconeLunaryBraintrustDatadog LLM Observability
Oct 202529.3%29.3%31.5%4.4%2.1%1.7%0.63%0.95%
Nov 202529.4%29.4%31.8%4.4%2.1%1.4%0.64%0.76%
Dec 202529.8%29.8%30.7%4%2.7%1.5%0.77%0.77%
Jan 202633.3%27.2%28%4.8%3%2%1.1%0.7%
Feb 202634.9%28.5%25.1%5.1%3.1%1.4%0.93%0.93%
Mar 202634.9%28.7%25.2%5.1%3.1%1.4%0.6%0.92%
Apr 202633.6%27.6%28.4%4.9%3%1.1%0.73%0.58%
May 202635.7%29.4%24.7%4.8%2.6%1.2%0.78%0.78%
Jun 202637.1%30.5%21.9%5.5%2.2%1.2%0.81%0.81%
Jul 202639.3%32.4%19.1%4.7%1.9%1.3%0.86%0.46%
Aug 202641.2%27.7%19.2%7%2%1.3%1.1%0.37%
Sep 202642.3%28.4%19.7%5.1%1.7%1.4%1.1%0.34%

How has the Arize Phoenix and Datadog LLM Observability comparison changed over the last 12 months?

3 findings

How did search popularity change for LLM observability platforms worldwide in September 2026?

2 changes

  1. In September 2026, Arize Phoenix lost share of searches among LLM observability platforms worldwide, from 7% to 5.1%.

  2. Estimated monthly branded searches for Datadog LLM Observability worldwide fell 63.3% over 12 measured months, from 2.4K to 880 in September 2026.

How are branded searches counted?

3 search terms

Brandwave collects information about searches that people make online using Arize Phoenix’s and Datadog LLM Observability’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.

Arize Phoenix

2 branded search terms

  • arize ai
  • arize phoenix

Datadog LLM Observability

1 branded search term

  • datadog llm observability

How the Brand Demand Index is measured

Other head-to-heads among LLM observability platforms

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