LangSmith vs PromptLayer:Which is more popular by branded search?
In August 2026, LangSmith had more branded searches than PromptLayer among prompt management platforms worldwide. LangSmith was estimated to have 74K branded searches compared to PromptLayer’s 1.6K, and held a 71% Share of Search versus PromptLayer’s 1.5%. These are worldwide searches for English-language branded terms.
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Which is more popular in search, LangSmith or PromptLayer?
Compare the tools teams use to version and test prompts. 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, PromptLayer. The figures are in the table below the chart.
View monthly share of search table
| Month | LangSmith | Promptfoo | Helicone | PromptLayer | Humanloop |
|---|---|---|---|---|---|
| Oct 2025 | 76.2% | 10.2% | 5.6% | 5.6% | 2.5% |
| Nov 2025 | 74.9% | 12.2% | 5.5% | 5.5% | 1.9% |
| Dec 2025 | 74.7% | 12.2% | 6.7% | 4.4% | 1.9% |
| Jan 2026 | 71% | 14.2% | 7.8% | 5.2% | 1.8% |
| Feb 2026 | 71.9% | 14.4% | 7.9% | 4.3% | 1.6% |
| Mar 2026 | 50.1% | 41% | 5.5% | 2.4% | 1.1% |
| Apr 2026 | 68% | 20.4% | 7.4% | 2.7% | 1.4% |
| May 2026 | 72.5% | 17.8% | 6.5% | 1.9% | 1.3% |
| Jun 2026 | 73.7% | 18.1% | 5.4% | 1.5% | 1.3% |
| Jul 2026 | 74.6% | 18.3% | 4.5% | 1.6% | 1.1% |
| Aug 2026 | 71% | 21.3% | 5.2% | 1.5% | 0.96% |
| Sep 2026 | — | — | — | — | — |
How has the LangSmith and PromptLayer comparison changed over the last 12 months?
3 findings
- LangSmith was ahead of PromptLayer in every measured month of the 11 months ending August 2026.
- Across the 11 months ending August 2026, LangSmith’s estimated Share of Search among prompt management platforms worldwide moved from 76.2% to 71%, and its estimated monthly branded searches held steady at 74K.
- Across the 11 months ending August 2026, PromptLayer’s estimated Share of Search among prompt management platforms worldwide moved from 5.6% to 1.5%, and its estimated monthly branded searches moved from 5.4K to 1.6K.
How did search popularity change for prompt management platforms worldwide in August 2026?
2 changes
In August 2026, LangSmith lost estimated Share of Search among prompt management platforms worldwide, from 74.6% to 71%.
Estimated monthly branded searches for PromptLayer worldwide fell 70.4% over 11 measured months, from 5.4K to 1.6K in August 2026.
How each brand is measured
Brandwave collects information about searches that people make online using LangSmith’s and PromptLayer’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.
LangSmith
1 branded search term
- langsmith
PromptLayer
1 branded search term
- promptlayer
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.