--- title: "DeepEval vs LangSmith: Which is searched more?" description: "Is DeepEval or LangSmith more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the AI testing tools 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/deepeval-vs-langsmith" publisher: "Brandwave" --- # DeepEval vs LangSmith: Which is searched more? Is DeepEval or LangSmith more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the AI testing tools 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**: DeepEval and LangSmith - **Competitive set**: AI testing tools - **Market**: Global - **Month measured**: Sep 2026 - **DeepEval Share of Search**: 10.8% - **LangSmith Share of Search**: 54% ## Is DeepEval or LangSmith more popular in search? - In September 2026, LangSmith had more branded searches than DeepEval among AI testing tools worldwide. LangSmith had about 74,000 branded searches, while DeepEval had 14,800. LangSmith made up 54% of all AI testing tool searches we track, and DeepEval accounted for 10.8%. - LangSmith was ahead of DeepEval in every measured month of the 12 months ending September 2026. - Across the 12 months ending September 2026, DeepEval’s share of searches among AI testing tools worldwide moved from 9.1% to 10.8%, and its estimated monthly branded searches moved from 12.1K to 14.8K. - Across the 12 months ending September 2026, LangSmith’s share of searches among AI testing tools worldwide moved from 55.9% to 54%, and its estimated monthly branded searches held steady at 74K. ## Top AI testing tools in ChatGPT and Google AI Overviews In three ChatGPT questions and two Google AI Overviews, DeepEval and LangSmith were each mentioned in two out of five: in two of the three ChatGPT answers, but not in either of the two Google AI Overviews. DeepEval was listed before LangSmith in every answer that named either. 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 | | --- | --- | --- | --- | --- | | DeepEval | 1st | 2 of 3 | 0 of 2 | 2 of 5 | | Promptfoo | 2nd | 2 of 3 | 0 of 2 | 2 of 5 | | Momentic | 3rd | 1 of 3 | 1 of 2 | 2 of 5 | | Mabl | 4th | 1 of 3 | 2 of 2 | 3 of 5 | | Testim | 5th | 1 of 3 | 1 of 2 | 2 of 5 | | Applitools | 6th | 0 of 3 | 1 of 2 | 1 of 5 | | LangSmith | 7th | 2 of 3 | 0 of 2 | 2 of 5 | | QA Wolf | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | ## Every AI answer about AI testing tools - Asked ChatGPT "Which AI testing tool should I use?": 1. DeepEval, 2. Promptfoo, 3. LangSmith - Asked ChatGPT "What are the best AI testing tools?": 1. DeepEval, 2. Promptfoo, 3. LangSmith - Asked ChatGPT "What's the best AI testing tool for automated software tests?": 1. Momentic, 2. Mabl, 3. Testim - Searched Google, AI Overview "ai testing tools": 1. Applitools, 2. Testim, 3. Mabl, 4. Momentic - Searched Google, AI Overview "best test automation tool": 1. Mabl Not named in any answer: QA Wolf. 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 testing tools worldwide in September 2026? - In September 2026, DeepEval lost share of searches among AI testing tools worldwide, from 13.2% to 10.8%. ## Month by month | Month | DeepEval estimated searches | DeepEval Share of Search | DeepEval rank | LangSmith estimated searches | LangSmith Share of Search | LangSmith rank | | --- | --- | --- | --- | --- | --- | --- | | Oct 2025 | 12.1K | 9.1% | 2 | 74K | 55.9% | 1 | | Nov 2025 | 12.1K | 8.9% | 2 | 74K | 54.5% | 1 | | Dec 2025 | 12.1K | 9.3% | 2 | 74K | 56.9% | 1 | | Jan 2026 | 14.8K | 10% | 3 | 74K | 49.8% | 1 | | Feb 2026 | 14.8K | 10.4% | 2 | 74K | 52.2% | 1 | | Mar 2026 | 14.8K | 6.7% | 3 | 90.5K | 40.7% | 1 | | Apr 2026 | 14.8K | 8.6% | 3 | 90.5K | 52.5% | 1 | | May 2026 | 14.8K | 9.4% | 3 | 90.5K | 57.5% | 1 | | Jun 2026 | 18.1K | 11.2% | 3 | 90.5K | 56.1% | 1 | | Jul 2026 | 18.1K | 11.6% | 3 | 90.5K | 57.9% | 1 | | Aug 2026 | 18.1K | 13.2% | 3 | 74K | 54% | 1 | | Sep 2026 | 14.8K | 10.8% | 3 | 74K | 54% | 1 | ## How each brand is measured Brandwave collects information about searches that people make online using DeepEval’s and LangSmith’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. - **DeepEval**: Measured on the search term “deepeval”. - **LangSmith**: Measured on the search term “langsmith”. - [DeepEval profile](/demand/global-en/brands/deepeval) - [LangSmith profile](/demand/global-en/brands/langsmith) - [All AI testing tools worldwide](/demand/global-en/categories/ai-testing-tools): The set both shares are measured inside, 8 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 DeepEval or LangSmith more popular in search? In September 2026, LangSmith had more branded searches than DeepEval among AI testing tools worldwide. LangSmith had about 74,000 branded searches, while DeepEval had 14,800. LangSmith made up 54% of all AI testing tool searches we track, and DeepEval accounted for 10.8%. ## Cite this page Brandwave. "DeepEval vs LangSmith: Which is searched more?". https://gobrandwave.com/demand/global-en/compare/deepeval-vs-langsmith This page is also available as HTML at https://gobrandwave.com/demand/global-en/compare/deepeval-vs-langsmith. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.