LangChain vs Vectara:Which is more popular by branded search?
In August 2026, LangChain had more branded searches than Vectara among rag platforms worldwide. LangChain was estimated to have 246K branded searches compared to Vectara’s 1.9K, and held an 88.8% Share of Search versus Vectara’s 0.69%. These are worldwide searches for English-language branded terms.
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Which is more popular in search, LangChain or Vectara?
Compare the rag platforms engineering teams rely on. 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 LangChain, Vectara. The figures are in the table below the chart.
View monthly share of search table
| Month | LangChain | LlamaIndex | Vectara | Ragie | LlamaCloud | Haystack |
|---|---|---|---|---|---|---|
| Oct 2025 | 85.9% | 11.6% | 1% | 0.68% | 0.83% | 0% |
| Nov 2025 | 88.2% | 9.7% | 0.85% | 0.56% | 0.7% | <0.01% |
| Dec 2025 | 88.4% | 9.7% | 0.85% | 0.47% | 0.56% | <0.01% |
| Jan 2026 | 86.4% | 11.6% | 0.83% | 0.46% | 0.69% | <0.01% |
| Feb 2026 | 88.5% | 9.7% | 0.85% | 0.38% | 0.56% | <0.01% |
| Mar 2026 | 86.8% | 11.7% | 0.68% | 0.38% | 0.45% | <0.01% |
| Apr 2026 | 86.7% | 11.7% | 0.83% | 0.37% | 0.46% | <0.01% |
| May 2026 | 86.7% | 11.7% | 0.84% | 0.37% | 0.37% | <0.01% |
| Jun 2026 | 88.7% | 9.8% | 0.71% | 0.47% | 0.38% | <0.01% |
| Jul 2026 | 86.6% | 11.7% | 0.67% | 0.56% | 0.46% | <0.01% |
| Aug 2026 | 88.8% | 9.8% | 0.69% | 0.36% | 0.32% | <0.01% |
| Sep 2026 | — | — | — | — | — | — |
How has the LangChain and Vectara comparison changed over the last 12 months?
3 findings
- LangChain was ahead of Vectara in every measured month of the 11 months ending August 2026.
- Across the 11 months ending August 2026, LangChain’s estimated Share of Search among rag platforms worldwide moved from 85.9% to 88.8%, and its estimated monthly branded searches moved from 301K to 246K.
- Across the 11 months ending August 2026, Vectara’s estimated Share of Search among rag platforms worldwide moved from 1% to 0.69%, and its estimated monthly branded searches moved from 3.6K to 1.9K.
How did search popularity change for rag platforms worldwide in August 2026?
2 changes
In August 2026, LangChain gained estimated Share of Search among rag platforms worldwide, from 86.6% to 88.8%.
Estimated monthly branded searches for Vectara worldwide fell 47.2% over 11 measured months, from 3.6K to 1.9K in August 2026.
How each brand is measured
Brandwave collects information about searches that people make online using LangChain’s and Vectara’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.
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