Langfuse vs Weights & Biases:Which is more popular by branded search?
In August 2026, Langfuse had more branded searches than Weights & Biases among LLM observability platforms worldwide. Langfuse was estimated to have 110K branded searches compared to Weights & Biases’ 50.4K, and held a 45.3% Share of Search versus Weights & Biases’ 20.8%. These are worldwide searches for English-language branded terms.
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Which is more popular in search, Langfuse or Weights & Biases?
Compare the platforms used to trace and evaluate language models. 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.
Share of Search by month for Langfuse, Weights & Biases. The figures are in the table below the chart.
View monthly share of search table
| Month | Langfuse | LangSmith | Weights & Biases | Helicone | Braintrust |
|---|---|---|---|---|---|
| Oct 2025 | 31.7% | 31.7% | 33.6% | 2.3% | 0.68% |
| Nov 2025 | 31.7% | 31.7% | 33.6% | 2.3% | 0.68% |
| Dec 2025 | 31.9% | 31.9% | 32.5% | 2.8% | 0.82% |
| Jan 2026 | 36.1% | 29.5% | 30% | 3.2% | 1.2% |
| Feb 2026 | 37.8% | 30.9% | 26.9% | 3.4% | 1% |
| Mar 2026 | 37.8% | 31.1% | 27% | 3.4% | 0.65% |
| Apr 2026 | 36.1% | 29.7% | 30.2% | 3.2% | 0.79% |
| May 2026 | 38.4% | 31.6% | 26.3% | 2.8% | 0.84% |
| Jun 2026 | 40.2% | 33.1% | 23.5% | 2.4% | 0.88% |
| Jul 2026 | 42.2% | 34.7% | 20.2% | 2.1% | 0.92% |
| Aug 2026 | 45.3% | 30.5% | 20.8% | 2.2% | 1.2% |
| Sep 2026 | — | — | — | — | — |
How has the Langfuse and Weights & Biases comparison changed over the last 12 months?
3 findings
- The lead changed hands once in the 11 months ending August 2026: Langfuse took it in January 2026.
- Across the 11 months ending August 2026, Langfuse’s estimated Share of Search among LLM observability platforms worldwide moved from 31.7% to 45.3%, and its estimated monthly branded searches moved from 74K to 110K.
- Across the 11 months ending August 2026, Weights & Biases’ estimated Share of Search among LLM observability platforms worldwide moved from 33.6% to 20.8%, and its estimated monthly branded searches moved from 78.6K to 50.4K.
How did search popularity change for LLM observability platforms worldwide in August 2026?
2 changes
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%.
How each brand is measured
Brandwave collects information about searches that people make online using Langfuse’s and Weights & Biases’ 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
1 branded search term
- langfuse
Weights & Biases
2 branded search terms
- wandb
- weights and biases
Put your own brand in this comparison
Brandwave tracks your branded demand next to the rival you actually watch, with your campaigns, spend and outcomes on the same timeline.