--- title: "Langfuse vs Promptfoo: Which is searched more?" description: "Is Langfuse or Promptfoo more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the AI evaluation platforms set worldwide. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time." canonical: "https://gobrandwave.com/demand/global-en/compare/langfuse-vs-promptfoo" publisher: "Brandwave" --- # Langfuse vs Promptfoo: Which is searched more? Is Langfuse or Promptfoo more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the AI evaluation platforms set worldwide. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time. ## Key facts - **Compared**: Langfuse and Promptfoo - **Competitive set**: AI evaluation platforms - **Market**: Global - **Month measured**: Sep 2026 - **Langfuse Share of Search**: 39.8% - **Promptfoo Share of Search**: 8% ## Is Langfuse or Promptfoo more popular in search? - In September 2026, Langfuse had more branded searches than Promptfoo among AI evaluation platforms worldwide. Langfuse had about 110,000 branded searches, while Promptfoo had 22,200. Langfuse made up 39.8% of all AI evaluation platform searches we track, and Promptfoo accounted for 8%. - Langfuse was ahead of Promptfoo in every measured month of the 12 months ending September 2026. - Across the 12 months ending September 2026, Langfuse’s share of searches among AI evaluation platforms worldwide moved from 29.5% to 39.8%, and its estimated monthly branded searches moved from 74K to 110K. - Across the 12 months ending September 2026, Promptfoo’s share of searches among AI evaluation platforms worldwide moved from 4% to 8%, and its estimated monthly branded searches moved from 9.9K to 22.2K. ## Top AI evaluation platforms in ChatGPT and Google AI Overviews In three ChatGPT questions and two Google AI Overviews, Langfuse was mentioned in three out of five: in all three ChatGPT answers, but not in either of the two Google AI Overviews. Promptfoo was mentioned in two out of five: in one of the three ChatGPT answers and in one of the two Google AI Overviews. Langfuse was listed before Promptfoo in three out of four answers. Brands get a higher AI rank if they are mentioned earlier in the answers that list options. | Brand | AI rank | ChatGPT answers that named it | Google AI Overviews that named it | All answers that named it | | --- | --- | --- | --- | --- | | Braintrust | 1st | 3 of 3 | 1 of 2 | 4 of 5 | | LangSmith | 2nd | 3 of 3 | 0 of 2 | 3 of 5 | | Langfuse | 3rd | 3 of 3 | 0 of 2 | 3 of 5 | | Arize | 4th | 3 of 3 | 1 of 2 | 4 of 5 | | Weights & Biases | 5th | 2 of 3 | 0 of 2 | 2 of 5 | | Promptfoo | 6th | 1 of 3 | 1 of 2 | 2 of 5 | | Patronus AI | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | ## Every AI answer about AI evaluation platforms - Asked ChatGPT "Which AI evaluation platform should I use?": 1. LangSmith, 2. Braintrust, 3. Langfuse, 4. Arize - Asked ChatGPT "What are the best AI evaluation platforms?": 1. Braintrust, 2. LangSmith, 3. Langfuse, 4. Arize, 5. Weights & Biases, 6. Promptfoo - Asked ChatGPT "What's the best AI evaluation platform for llm teams?": 1. Braintrust, 2. Langfuse, 3. LangSmith, 4. Arize, 5. Weights & Biases - Searched Google, AI Overview "ai evaluation platforms": 1. Braintrust, 2. Arize, 3. Promptfoo - Searched Google, AI Overview "ai model evaluation": named none of the brands we track Not named in any answer: Patronus AI. Brands are listed in the order each answer named them. The answers were collected in the United States on October 20, 2026. ## How did search popularity change for AI evaluation platforms worldwide in September 2026? - Langfuse’s share of searches among AI evaluation platforms worldwide has gained ground for 3 months in a row, from 36.2% to 39.8% in September 2026. - Promptfoo’s share of searches among AI evaluation platforms worldwide has gained ground for 3 months in a row, from 7.3% to 8% in September 2026. ## Month by month | Month | Langfuse estimated searches | Langfuse Share of Search | Langfuse rank | Promptfoo estimated searches | Promptfoo Share of Search | Promptfoo rank | | --- | --- | --- | --- | --- | --- | --- | | Oct 2025 | 74K | 29.5% | 2 | 9.9K | 4% | 5 | | Nov 2025 | 74K | 29.5% | 2 | 12.1K | 4.8% | 4 | | Dec 2025 | 74K | 29.6% | 2 | 12.1K | 4.8% | 4 | | Jan 2026 | 90.5K | 33.5% | 1 | 14.8K | 5.5% | 4 | | Feb 2026 | 90.5K | 35% | 1 | 14.8K | 5.7% | 4 | | Mar 2026 | 110K | 29.9% | 1 | 74K | 20.1% | 4 | | Apr 2026 | 110K | 32.8% | 1 | 27.1K | 8.1% | 4 | | May 2026 | 110K | 34.8% | 1 | 22.2K | 7% | 4 | | Jun 2026 | 110K | 36.2% | 1 | 22.2K | 7.3% | 4 | | Jul 2026 | 110K | 37.7% | 1 | 22.2K | 7.6% | 4 | | Aug 2026 | 110K | 39.5% | 1 | 22.2K | 8% | 4 | | Sep 2026 | 110K | 39.8% | 1 | 22.2K | 8% | 4 | ## How each brand is measured Brandwave collects information about searches that people make online using Langfuse’s and Promptfoo’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. - **Langfuse**: Measured on the search term “langfuse”. - **Promptfoo**: Measured on the search term “promptfoo”. - [Langfuse profile](/demand/global-en/brands/langfuse) - [Promptfoo profile](/demand/global-en/brands/promptfoo) - [All AI evaluation platforms worldwide](/demand/global-en/categories/ai-evaluation-platforms): The set both shares are measured inside, 7 brands. ## Methodology - [How is the Brand Demand Index measured?](/demand/methodology): Where the figures come from, what they compare, and how they may be reused. ## Frequently asked questions ### Is Langfuse or Promptfoo more popular in search? In September 2026, Langfuse had more branded searches than Promptfoo among AI evaluation platforms worldwide. Langfuse had about 110,000 branded searches, while Promptfoo had 22,200. Langfuse made up 39.8% of all AI evaluation platform searches we track, and Promptfoo accounted for 8%. ## Cite this page Brandwave. "Langfuse vs Promptfoo: Which is searched more?". https://gobrandwave.com/demand/global-en/compare/langfuse-vs-promptfoo This page is also available as HTML at https://gobrandwave.com/demand/global-en/compare/langfuse-vs-promptfoo. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.