LangSmith vs Weights & Biases:Which is more popular by branded search?
In August 2026, LangSmith had more branded searches than Weights & Biases among LLM observability platforms worldwide. LangSmith was estimated to have 74K branded searches compared to Weights & Biases’ 50.4K, and held a 30.5% 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, LangSmith 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 LangSmith, 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 LangSmith and Weights & Biases comparison changed over the last 12 months?
3 findings
- The lead changed hands 3 times in the 11 months ending August 2026: LangSmith took it in February 2026, Weights & Biases took it in April 2026, LangSmith took it in May 2026.
- Across the 11 months ending August 2026, LangSmith’s estimated Share of Search among LLM observability platforms worldwide moved from 31.7% to 30.5%, and its estimated monthly branded searches held steady at 74K.
- 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, 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%.
How each brand is measured
Brandwave collects information about searches that people make online using LangSmith’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.
LangSmith
1 branded search term
- langsmith
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.