Brandwave

How popular isLangfuse?

In September 2026, people searched for Langfuse by name about 110,000 times worldwide, a 48.6% increase from the previous year. These searches made up 53.5% of all global model monitoring platform searches, placing Langfuse first out of nine platforms. When we asked both ChatGPT and Google AI Overviews about model monitoring platforms, Langfuse appeared in two of the five answers and was the second most recommended of the nine.

Search and AI answers in September 2026

Langfuse is the most searched of 9 competitors and the second most recommended in AI answers.

  1. LangfuseShare of searches 53.5%Mentioned in 2 of 5 AI answersPlace in AI recommendations 2nd
  2. LangSmithShare of searches 36%Mentioned in 2 of 5 AI answersPlace in AI recommendations 3rd
  3. ArizeShare of searches 5.9%Mentioned in 5 of 5 AI answersPlace in AI recommendations 1st
  4. BraintrustShare of searches 1.4%Mentioned in 2 of 5 AI answersPlace in AI recommendations 6th
  5. EvidentlyShare of searches 1.2%Mentioned in 5 of 5 AI answersPlace in AI recommendations 4th

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Top model monitoring platforms in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, Langfuse was mentioned in two out of five: in two of the three ChatGPT answers, but not in either of the two Google AI Overviews. Langfuse is the second most recommended of the nine.

Most recommended by AI

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

  1. Arize1st
  2. Langfuse2nd
  3. LangSmith3rd
  4. Evidently4th
  5. Fiddler5th
  6. Braintrust6th
  7. Datadog LLM Observability7th
  8. WhyLabs8th
  9. NannyML–

Mentioned by AI

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

  • Arize5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Evidently5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Fiddler4 of 5Named in 2 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Langfuse2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • LangSmith2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Braintrust2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Datadog LLM Observability2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • WhyLabs2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • NannyML0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

See every answer about model monitoring platforms

5 answers

Not named in any answer:

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

Which model monitoring platforms compete with Langfuse?

Langfuse against model monitoring platforms worldwide, by month

Share of searches by month for Langfuse, LangSmith, Arize. The figures are in the table below the chart.

View monthly share of searches table
MonthLangfuseLangSmithArizeBraintrustEvidentlyFiddlerDatadog LLM ObservabilityWhyLabsNannyML
Oct 202543.5%43.5%5.8%0.94%2.1%1.7%1.4%0.76%0.35%
Nov 202544.2%44.2%4.8%0.95%2.1%1.7%1.1%0.6%0.29%
Dec 202543.8%43.8%5.9%1.1%2.1%1.4%1.1%0.59%0.23%
Jan 202648.4%39.6%5.3%1.6%1.6%1.9%1%0.53%0.21%
Feb 202648.2%39.4%5.3%1.3%1.9%1.9%1.3%0.53%0.26%
Mar 202648.8%40.1%4.4%0.84%2%2%1.3%0.44%0.21%
Apr 202649.1%40.4%4.4%1.1%2%1.6%0.85%0.39%0.21%
May 202649%40.3%5.4%1.1%1.3%1.3%1.1%0.45%0.17%
Jun 202649.6%40.8%4.5%1.1%1.3%1.1%1.1%0.4%0.18%
Jul 202649.7%40.9%4.5%1.1%1.3%1.3%0.59%0.45%0.18%
Aug 202652.7%35.5%7.1%1.4%1.2%1.2%0.48%0.35%0.15%
Sep 202653.5%36%5.9%1.4%1.2%1.2%0.43%0.23%0.16%

  1. 1.Langfuse

    53.5%

    Held 1st. 110K estimated branded searches, 0% vs prior month. Share +0.8 points.

  2. 2.LangSmith

    36%

    Held 2nd. 74K estimated branded searches, 0% vs prior month. Share +0.5 points.

  3. 3.Arize

    5.9%

    Held 3rd. 12.1K estimated branded searches, -18.2% vs prior month. Share -1.2 points.

  4. 4.Braintrust

    1.4%

    Held 4th. 2.9K estimated branded searches, 0% vs prior month. Share 0 points.

  5. 5.Evidently

    1.2%

    Held 5th. 2.4K estimated branded searches, 0% vs prior month. Share 0 points.

  6. 6.Fiddler

    1.2%

    Held 6th. 2.4K estimated branded searches, 0% vs prior month. Share 0 points.

  7. 7.Datadog LLM Observability

    0.43%

    Held 7th. 880 estimated branded searches, -12% vs prior month. Share -0.1 points.

  8. 8.WhyLabs

    0.23%

    Held 8th. 480 estimated branded searches, -33.3% vs prior month. Share -0.1 points.

  9. 9.NannyML

    0.16%

    Held 9th. 320 estimated branded searches, 0% vs prior month. Share 0 points.

Compare popularity between Langfuse and its closest rivals

Every comparison with Langfuse

21 comparisons

How has branded search demand for Langfuse changed worldwide over the last 12 months?

2 findings
  • Across the 12 months ending September 2026, estimated monthly branded searches for Langfuse worldwide rose from 74K to 110K.
  • Across the 12 months ending September 2026, Langfuse’s share of searches among model monitoring platforms worldwide increased from 43.5% to 53.5%.

How did search popularity change for model monitoring platforms worldwide in September 2026?

6 changes

  1. In September 2026, Langfuse gained share of searches among model monitoring platforms worldwide, from 52.7% to 53.5%.

  2. In September 2026, LangSmith gained share of searches among model monitoring platforms worldwide, from 35.5% to 36%.

  3. In September 2026, Arize lost share of searches among model monitoring platforms worldwide, from 7.1% to 5.9%.

  4. Datadog LLM Observability’s share of searches among model monitoring platforms worldwide has lost ground for 3 months in a row, from 1.1% to 0.43% in September 2026.

  5. Estimated monthly branded searches for Braintrust worldwide rose 81.3% over 12 measured months, from 1.6K to 2.9K in September 2026.

  6. Estimated monthly branded searches for WhyLabs worldwide fell 63.1% over 12 measured months, from 1.3K to 480 in September 2026.

How are Langfuse’s branded searches counted?

1 search term

Brandwave collects information about searches that people make online using Langfuse’s name. When viewed over time, estimated search volumes for this branded term can be used to understand whether interest in the brand is growing, holding steady, or fading.

  • langfuse

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How the Brand Demand Index is measured

Where does Langfuse compete?

Langfuse is ranked in five competitor sets. Each share is worked out among that set's brands, so it differs from set to set.
Competitor setRankShare of searchesRanking
Experiment tracking platforms2nd of 816.8%Show ranking
AI evaluation platforms1st of 739.8%Show ranking
LLM observability platforms1st of 842.3%Show ranking
Prompt management platforms1st of 750.8%Show ranking
Model monitoring platforms1st of 953.5%Shown above
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