--- title: "LLM observability platforms: Which brands are most popular in search?" description: "Compare the platforms used to trace and evaluate language models. Share of Search among Langfuse, LangSmith, Weights & Biases, Helicone and Braintrust, the LLM observability platforms Brandwave compares worldwide, using the same methodology, market, and reporting period. 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/categories/llm-observability-platforms" publisher: "Brandwave" --- # LLM observability platforms: Which brands are most popular in search? Compare the platforms used to trace and evaluate language models. Share of Search among Langfuse, LangSmith, Weights & Biases, Helicone and Braintrust, the LLM observability platforms Brandwave compares worldwide, using the same methodology, market, and reporting period. 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 - **Competitive set**: LLM observability platforms - **Market**: Global - **Brands compared**: 5 - **Month measured**: Aug 2026 - **Highest Share of Search**: Langfuse, 45.3% ## Which brand is most popular in search among LLM observability platforms worldwide? - In August 2026, Langfuse was the most searched among LLM observability platforms worldwide, with an estimated 110K branded searches and 45.3% estimated Share of Search within this set. - LangSmith is in 2nd place, 14.8 percentage points behind at 30.5% Share of Search. - Across the 11 months ending August 2026, Langfuse’s estimated Share of Search among LLM observability platforms worldwide increased from 31.7% to 45.3%. - Across the 11 months ending August 2026, LangSmith’s estimated Share of Search among LLM observability platforms worldwide decreased from 31.7% to 30.5%. - Across the 11 months ending August 2026, Weights & Biases’ estimated Share of Search among LLM observability platforms worldwide decreased from 33.6% to 20.8%. - Across the 11 months ending August 2026, Braintrust’s estimated Share of Search among LLM observability platforms worldwide increased from 0.68% to 1.2%. - Across the 11 months ending August 2026, LangSmith’s estimated Share of Search among LLM observability platforms worldwide peaked at 34.7% in July 2026 and was lowest at 29.5% in January 2026. - Across the 11 months ending August 2026, Weights & Biases’ estimated Share of Search among LLM observability platforms worldwide peaked at 33.6% in October 2025 and was lowest at 20.2% in July 2026. - Across the 11 months ending August 2026, Helicone’s estimated Share of Search among LLM observability platforms worldwide peaked at 3.4% in March 2026 and was lowest at 2.1% in July 2026. - Across the 11 months ending August 2026, Langfuse rose from 2nd to 1st among LLM observability platforms worldwide. - Across the 11 months ending August 2026, LangSmith rose from 3rd to 2nd among LLM observability platforms worldwide. - Across the 11 months ending August 2026, Weights & Biases fell from 1st to 3rd among LLM observability platforms worldwide. - Across the 11 months ending August 2026, Helicone held steady: its estimated Share of Search among LLM observability platforms worldwide moved less than 0.5 percentage points. ## Compare search popularity between leading brands - [Langfuse vs LangSmith: compare search popularity](/demand/global-en/compare/langfuse-vs-langsmith): 45.3% against 30.5% Share of Search. - [Langfuse vs Weights & Biases: compare search popularity](/demand/global-en/compare/langfuse-vs-weights-biases): 45.3% against 20.8% Share of Search. - [Langfuse vs Helicone: compare search popularity](/demand/global-en/compare/helicone-vs-langfuse): 45.3% against 2.2% Share of Search. - [LangSmith vs Weights & Biases: compare search popularity](/demand/global-en/compare/langsmith-vs-weights-biases): 30.5% against 20.8% Share of Search. - [LangSmith vs Helicone: compare search popularity](/demand/global-en/compare/helicone-vs-langsmith): 30.5% against 2.2% Share of Search. - [Weights & Biases vs Helicone: compare search popularity](/demand/global-en/compare/helicone-vs-weights-biases): 20.8% against 2.2% Share of Search. ## How did search popularity change for LLM observability platforms worldwide in August 2026? - In August 2026, Langfuse gained estimated Share of Search among LLM observability platforms worldwide, from 42.2% to 45.3%. - In August 2026, Weights & Biases gained estimated Share of Search among LLM observability platforms worldwide, from 20.2% to 20.8%. - In August 2026, LangSmith lost estimated Share of Search among LLM observability platforms worldwide, from 34.7% to 30.5%. - Estimated monthly branded searches for Braintrust worldwide rose 81.3% over 11 measured months, from 1.6K to 2.9K in August 2026. ## Share of Search ranking | Rank | Brand | Share of Search | Estimated monthly branded searches | Change vs prior month | Owned by | | --- | --- | --- | --- | --- | --- | | 1 | Langfuse | 45.3% | 110K | 0.0% | Langfuse | | 2 | LangSmith | 30.5% | 74K | -18.2% | LangSmith | | 3 | Weights & Biases | 20.8% | 50.4K | -4.2% | Weights & Biases | | 4 | Helicone | 2.2% | 5.4K | 0.0% | Helicone | | 5 | Braintrust | 1.2% | 2.9K | +20.8% | Braintrust | ## Historical estimated branded-search demand | Month | Brand | Estimated monthly branded searches | Share of Search | Rank | | --- | --- | --- | --- | --- | | Oct 2025 | Weights & Biases | 78.6K | 33.6% | 1 | | Oct 2025 | Langfuse | 74K | 31.7% | 2 | | Oct 2025 | LangSmith | 74K | 31.7% | 3 | | Oct 2025 | Helicone | 5.4K | 2.3% | 4 | | Oct 2025 | Braintrust | 1.6K | 0.68% | 5 | | Nov 2025 | Weights & Biases | 78.6K | 33.6% | 1 | | Nov 2025 | Langfuse | 74K | 31.7% | 2 | | Nov 2025 | LangSmith | 74K | 31.7% | 3 | | Nov 2025 | Helicone | 5.4K | 2.3% | 4 | | Nov 2025 | Braintrust | 1.6K | 0.68% | 5 | | Dec 2025 | Weights & Biases | 75.3K | 32.5% | 1 | | Dec 2025 | Langfuse | 74K | 31.9% | 2 | | Dec 2025 | LangSmith | 74K | 31.9% | 3 | | Dec 2025 | Helicone | 6.6K | 2.8% | 4 | | Dec 2025 | Braintrust | 1.9K | 0.82% | 5 | | Jan 2026 | Langfuse | 90.5K | 36.1% | 1 | | Jan 2026 | Weights & Biases | 75.3K | 30% | 2 | | Jan 2026 | LangSmith | 74K | 29.5% | 3 | | Jan 2026 | Helicone | 8.1K | 3.2% | 4 | | Jan 2026 | Braintrust | 2.9K | 1.2% | 5 | | Feb 2026 | Langfuse | 90.5K | 37.8% | 1 | | Feb 2026 | LangSmith | 74K | 30.9% | 2 | | Feb 2026 | Weights & Biases | 64.3K | 26.9% | 3 | | Feb 2026 | Helicone | 8.1K | 3.4% | 4 | | Feb 2026 | Braintrust | 2.4K | 1% | 5 | | Mar 2026 | Langfuse | 110K | 37.8% | 1 | | Mar 2026 | LangSmith | 90.5K | 31.1% | 2 | | Mar 2026 | Weights & Biases | 78.6K | 27% | 3 | | Mar 2026 | Helicone | 9.9K | 3.4% | 4 | | Mar 2026 | Braintrust | 1.9K | 0.65% | 5 | | Apr 2026 | Langfuse | 110K | 36.1% | 1 | | Apr 2026 | Weights & Biases | 92.1K | 30.2% | 2 | | Apr 2026 | LangSmith | 90.5K | 29.7% | 3 | | Apr 2026 | Helicone | 9.9K | 3.2% | 4 | | Apr 2026 | Braintrust | 2.4K | 0.79% | 5 | | May 2026 | Langfuse | 110K | 38.4% | 1 | | May 2026 | LangSmith | 90.5K | 31.6% | 2 | | May 2026 | Weights & Biases | 75.3K | 26.3% | 3 | | May 2026 | Helicone | 8.1K | 2.8% | 4 | | May 2026 | Braintrust | 2.4K | 0.84% | 5 | | Jun 2026 | Langfuse | 110K | 40.2% | 1 | | Jun 2026 | LangSmith | 90.5K | 33.1% | 2 | | Jun 2026 | Weights & Biases | 64.3K | 23.5% | 3 | | Jun 2026 | Helicone | 6.6K | 2.4% | 4 | | Jun 2026 | Braintrust | 2.4K | 0.88% | 5 | | Jul 2026 | Langfuse | 110K | 42.2% | 1 | | Jul 2026 | LangSmith | 90.5K | 34.7% | 2 | | Jul 2026 | Weights & Biases | 52.6K | 20.2% | 3 | | Jul 2026 | Helicone | 5.4K | 2.1% | 4 | | Jul 2026 | Braintrust | 2.4K | 0.92% | 5 | | Aug 2026 | Langfuse | 110K | 45.3% | 1 | | Aug 2026 | LangSmith | 74K | 30.5% | 2 | | Aug 2026 | Weights & Biases | 50.4K | 20.8% | 3 | | Aug 2026 | Helicone | 5.4K | 2.2% | 4 | | Aug 2026 | Braintrust | 2.9K | 1.2% | 5 | | Sep 2026 | Braintrust | — | — | — | | Sep 2026 | Helicone | — | — | — | | Sep 2026 | Langfuse | — | — | — | | Sep 2026 | LangSmith | — | — | — | | Sep 2026 | Weights & Biases | — | — | — | ## What is being compared - **Braintrust**: Measured on the search term “braintrust ai”. - **Helicone**: Measured on the search term “helicone”. - **Langfuse**: Measured on the search term “langfuse”. - **LangSmith**: Measured on the search term “langsmith”. - **Weights & Biases**: Measured on the search terms “wandb” and “weights and biases”, summed into one figure. - [Braintrust](/demand/global-en/brands/braintrust) - [Helicone](/demand/global-en/brands/helicone) - [Langfuse](/demand/global-en/brands/langfuse) - [LangSmith](/demand/global-en/brands/langsmith) - [Weights & Biases](/demand/global-en/brands/weights-biases) ## Methodology - [How is branded search demand measured?](/demand/methodology): Where the figures come from, what they compare, and how they may be reused. ## Frequently asked questions ### Which brand is most popular in search among LLM observability platforms worldwide? In August 2026, Langfuse was the most searched among LLM observability platforms worldwide, with an estimated 110K branded searches and 45.3% estimated Share of Search within this set. These are worldwide searches for English-language branded terms. ## Cite this page Brandwave. "LLM observability platforms: Which brands are most popular in search?". https://gobrandwave.com/demand/global-en/categories/llm-observability-platforms This page is also available as HTML at https://gobrandwave.com/demand/global-en/categories/llm-observability-platforms. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.