Langfuse vs Weights & Biases:Which is more popular?
In September 2026, Langfuse had more branded searches than Weights & Biases among experiment tracking platforms worldwide. Langfuse had about 110,000 branded searches, while Weights & Biases had 51,300. Langfuse made up 16.8% of all experiment tracking platform searches we track, and Weights & Biases accounted for 7.8%. When we asked ChatGPT and Google AI Overviews about experiment tracking platforms, Weights & Biases appeared in all five answers and Langfuse in two. Weights & Biases was mentioned before Langfuse in every answer.
Who do people search for more?
Langfuse, about 2 searches for every 1 for Weights & Biases
Who does AI mention more?
Weights & Biases, mentioned in every answer we collected
Who does AI recommend more?
Weights & Biases, named ahead of Langfuse in every answer
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Top experiment tracking platforms in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, Weights & Biases appeared in all five answers. 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. Weights & Biases was listed before Langfuse in every answer.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
- Weights & Biases5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
MLflow5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
Comet5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
ClearML4 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
Neptune2 of 5Named in 0 of 3 ChatGPT answersNamed in 2 of 2 Google answers
DVC1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
See every answer about experiment tracking platforms
5 answers
Asked ChatGPT
“Which experiment tracking platform should I use?”
Asked ChatGPT
“What are the best experiment tracking platforms?”
Asked ChatGPT
“What's the best experiment tracking platform for machine learning teams?”
Searched Google, AI Overview
“experiment tracking software”
Searched Google, AI Overview
“ml experiment tracking”
Brands are shown in the order each answer named them. The survey took place in the United States on October 20, 2026.
Is Langfuse or Weights & Biases more popular in search?
This chart shows how often people search Google for Langfuse and Weights & Biases by name. Each line represents a brand's share of searches for all eight experiment tracking platforms we track, month by month, from English-language searches worldwide.
Share of searches by month for Langfuse, Weights & Biases. The figures are in the table below the chart.
View monthly share of searches table
| Month | DVC | Langfuse | LangSmith | Weights & Biases | MLflow | Neptune | Comet | ClearML |
|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 55.6% | 11.2% | 11.2% | 12% | 9.1% | 0.36% | 0.44% | 0.15% |
| Nov 2025 | 50.6% | 12.4% | 12.4% | 13.4% | 10.2% | 0.4% | 0.4% | 0.17% |
| Dec 2025 | 56% | 11.3% | 11.3% | 11.6% | 7.5% | 1.8% | 0.29% | 0.13% |
| Jan 2026 | 60.3% | 12.1% | 9.9% | 10.2% | 6.6% | 0.39% | 0.32% | 0.12% |
| Feb 2026 | 56.4% | 13.9% | 11.3% | 10% | 7.6% | 0.37% | 0.29% | 0.13% |
| Mar 2026 | 51.5% | 15.4% | 12.7% | 11.1% | 8.5% | 0.41% | 0.34% | 0.14% |
| Apr 2026 | 50.6% | 15.1% | 12.5% | 12.8% | 8.3% | 0.26% | 0.26% | 0.12% |
| May 2026 | 52.7% | 15.8% | 13% | 10.9% | 7.1% | 0.23% | 0.23% | 0.13% |
| Jun 2026 | 48.5% | 17.7% | 14.6% | 10.5% | 8% | 0.31% | 0.21% | 0.14% |
| Jul 2026 | 54.5% | 16.3% | 13.4% | 7.9% | 7.3% | 0.19% | 0.19% | 0.13% |
| Aug 2026 | 56.1% | 16.8% | 11.3% | 7.8% | 7.5% | 0.2% | 0.15% | 0.11% |
| Sep 2026 | 56.1% | 16.8% | 11.3% | 7.8% | 7.5% | 0.24% | 0.13% | 0.11% |
How has the Langfuse and Weights & Biases comparison changed over the last 12 months?
3 findings
- The lead changed hands once in the 12 months ending September 2026: Langfuse took it in January 2026.
- Across the 12 months ending September 2026, Langfuse’s share of searches among experiment tracking platforms worldwide moved from 11.2% to 16.8%, and its estimated monthly branded searches moved from 74K to 110K.
- Across the 12 months ending September 2026, Weights & Biases’ share of searches among experiment tracking platforms worldwide moved from 12% to 7.8%, and its estimated monthly branded searches moved from 79.6K to 51.3K.
How did search popularity change for experiment tracking platforms worldwide in September 2026?
2 changes
Estimated monthly branded searches for Langfuse worldwide rose 48.6% over 12 measured months, from 74K to 110K in September 2026.
Estimated monthly branded searches for Weights & Biases worldwide fell 35.6% over 12 measured months, from 79.6K to 51.3K in September 2026.
How are branded searches counted?
4 search terms
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
3 branded search terms
- wandb
- weights and biases
- weights biases
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